./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:45:26,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:45:26,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:45:26,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:45:26,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:45:26,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:45:26,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:45:26,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:45:26,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:45:26,809 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:45:26,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:45:26,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:45:26,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:45:26,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:45:26,812 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:45:26,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:45:26,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:45:26,814 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:45:26,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:45:26,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:45:26,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:45:26,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:45:26,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:45:26,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:45:26,818 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:45:26,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:45:26,819 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:45:26,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:45:26,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:45:26,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:45:26,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:45:26,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:45:26,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:45:26,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:45:26,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:45:26,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:45:26,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:45:26,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:45:26,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:45:26,830 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:45:26,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:45:26,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:45:26,831 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_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2023-11-29 05:45:27,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:45:27,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:45:27,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:45:27,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:45:27,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:45:27,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-29 05:45:29,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:45:30,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:45:30,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-29 05:45:30,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/data/b84bd133f/8f6d0f1955dc4f75acdd05b6c9eba7d0/FLAG8abac3dee [2023-11-29 05:45:30,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/data/b84bd133f/8f6d0f1955dc4f75acdd05b6c9eba7d0 [2023-11-29 05:45:30,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:45:30,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:45:30,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:45:30,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:45:30,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:45:30,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5e5a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30, skipping insertion in model container [2023-11-29 05:45:30,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,138 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:45:30,321 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_64b08b46-d293-42d9-b89a-3288afed88d6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-29 05:45:30,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:45:30,342 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:45:30,371 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_64b08b46-d293-42d9-b89a-3288afed88d6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-29 05:45:30,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:45:30,384 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:45:30,384 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:45:30,392 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:45:30,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30 WrapperNode [2023-11-29 05:45:30,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:45:30,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:45:30,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:45:30,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:45:30,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,438 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 270 [2023-11-29 05:45:30,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:45:30,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:45:30,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:45:30,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:45:30,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,473 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 2, 7, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 2, 1]. [2023-11-29 05:45:30,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:45:30,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:45:30,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:45:30,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:45:30,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (1/1) ... [2023-11-29 05:45:30,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:45:30,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:30,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:45:30,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:45:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:45:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:45:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:45:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:45:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:45:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:45:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:45:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:45:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:45:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:45:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:45:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:45:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:45:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:45:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:45:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:45:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:45:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 05:45:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 05:45:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:45:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:45:30,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:45:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:45:30,572 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:45:30,679 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:45:30,681 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:45:31,024 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:45:31,367 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:45:31,368 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 05:45:31,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:45:31 BoogieIcfgContainer [2023-11-29 05:45:31,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:45:31,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:45:31,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:45:31,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:45:31,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:45:30" (1/3) ... [2023-11-29 05:45:31,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2903b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:45:31, skipping insertion in model container [2023-11-29 05:45:31,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:45:30" (2/3) ... [2023-11-29 05:45:31,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2903b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:45:31, skipping insertion in model container [2023-11-29 05:45:31,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:45:31" (3/3) ... [2023-11-29 05:45:31,376 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-11-29 05:45:31,383 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:45:31,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:45:31,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:45:31,392 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:45:31,433 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:45:31,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 113 flow [2023-11-29 05:45:31,489 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2023-11-29 05:45:31,489 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:45:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 7/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-29 05:45:31,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 113 flow [2023-11-29 05:45:31,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 42 transitions, 102 flow [2023-11-29 05:45:31,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:45:31,512 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;@91bac75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:45:31,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 05:45:31,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:45:31,527 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2023-11-29 05:45:31,527 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:45:31,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:31,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:31,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:31,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1512367794, now seen corresponding path program 1 times [2023-11-29 05:45:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291731373] [2023-11-29 05:45:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291731373] [2023-11-29 05:45:31,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291731373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:31,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:31,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:45:31,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151120199] [2023-11-29 05:45:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:31,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:45:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:45:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:45:31,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:45:31,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:31,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:31,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:45:31,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:32,088 INFO L124 PetriNetUnfolderBase]: 1141/1823 cut-off events. [2023-11-29 05:45:32,089 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-29 05:45:32,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 1823 events. 1141/1823 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8692 event pairs, 945 based on Foata normal form. 168/1850 useless extension candidates. Maximal degree in co-relation 3078. Up to 1541 conditions per place. [2023-11-29 05:45:32,107 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 32 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-11-29 05:45:32,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 162 flow [2023-11-29 05:45:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:45:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 05:45:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2023-11-29 05:45:32,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2023-11-29 05:45:32,118 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 56 transitions. [2023-11-29 05:45:32,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 56 transitions. [2023-11-29 05:45:32,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:32,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 56 transitions. [2023-11-29 05:45:32,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:32,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:32,125 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:32,126 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 102 flow. Second operand 2 states and 56 transitions. [2023-11-29 05:45:32,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 162 flow [2023-11-29 05:45:32,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:45:32,133 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 86 flow [2023-11-29 05:45:32,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-11-29 05:45:32,138 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-29 05:45:32,139 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 86 flow [2023-11-29 05:45:32,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:32,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:32,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:32,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:45:32,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:32,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 483062152, now seen corresponding path program 1 times [2023-11-29 05:45:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601705585] [2023-11-29 05:45:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:32,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:32,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601705585] [2023-11-29 05:45:32,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601705585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:32,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:32,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:45:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057227830] [2023-11-29 05:45:32,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:32,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:45:32,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:32,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:45:32,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:45:32,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:45:32,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 86 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) [2023-11-29 05:45:32,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:32,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:45:32,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:32,553 INFO L124 PetriNetUnfolderBase]: 1033/1727 cut-off events. [2023-11-29 05:45:32,553 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-29 05:45:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3231 conditions, 1727 events. 1033/1727 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8498 event pairs, 319 based on Foata normal form. 42/1664 useless extension candidates. Maximal degree in co-relation 3228. Up to 1109 conditions per place. [2023-11-29 05:45:32,564 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-29 05:45:32,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 208 flow [2023-11-29 05:45:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:45:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:45:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-29 05:45:32,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-29 05:45:32,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-29 05:45:32,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-29 05:45:32,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:32,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-29 05:45:32,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:32,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 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) [2023-11-29 05:45:32,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 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) [2023-11-29 05:45:32,570 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 86 flow. Second operand 3 states and 80 transitions. [2023-11-29 05:45:32,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 208 flow [2023-11-29 05:45:32,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:45:32,572 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 98 flow [2023-11-29 05:45:32,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-29 05:45:32,573 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-29 05:45:32,573 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 98 flow [2023-11-29 05:45:32,574 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) [2023-11-29 05:45:32,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:32,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:32,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:45:32,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:32,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1343573562, now seen corresponding path program 2 times [2023-11-29 05:45:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:32,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764413661] [2023-11-29 05:45:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764413661] [2023-11-29 05:45:32,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764413661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:32,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:45:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823968993] [2023-11-29 05:45:32,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:32,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:45:32,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:32,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:45:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:45:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:45:32,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:32,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:32,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:45:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:33,072 INFO L124 PetriNetUnfolderBase]: 1082/1826 cut-off events. [2023-11-29 05:45:33,073 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-29 05:45:33,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1826 events. 1082/1826 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9006 event pairs, 872 based on Foata normal form. 42/1763 useless extension candidates. Maximal degree in co-relation 3653. Up to 1453 conditions per place. [2023-11-29 05:45:33,088 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 32 selfloop transitions, 2 changer transitions 15/57 dead transitions. [2023-11-29 05:45:33,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 231 flow [2023-11-29 05:45:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:45:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2023-11-29 05:45:33,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608695652173913 [2023-11-29 05:45:33,091 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2023-11-29 05:45:33,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2023-11-29 05:45:33,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:33,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2023-11-29 05:45:33,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 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) [2023-11-29 05:45:33,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,094 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 98 flow. Second operand 5 states and 106 transitions. [2023-11-29 05:45:33,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 231 flow [2023-11-29 05:45:33,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:45:33,097 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 118 flow [2023-11-29 05:45:33,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-29 05:45:33,098 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-29 05:45:33,098 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 118 flow [2023-11-29 05:45:33,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:33,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:33,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:45:33,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:33,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2073841455, now seen corresponding path program 1 times [2023-11-29 05:45:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:33,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958043637] [2023-11-29 05:45:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:33,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:45:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958043637] [2023-11-29 05:45:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958043637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:45:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513876622] [2023-11-29 05:45:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:33,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:45:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:45:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:45:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:45:33,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:33,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:45:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:33,519 INFO L124 PetriNetUnfolderBase]: 1240/2099 cut-off events. [2023-11-29 05:45:33,519 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2023-11-29 05:45:33,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2099 events. 1240/2099 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10841 event pairs, 1012 based on Foata normal form. 40/2029 useless extension candidates. Maximal degree in co-relation 4495. Up to 1454 conditions per place. [2023-11-29 05:45:33,531 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 33 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2023-11-29 05:45:33,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 276 flow [2023-11-29 05:45:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:45:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:45:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2023-11-29 05:45:33,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2023-11-29 05:45:33,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 96 transitions. [2023-11-29 05:45:33,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 96 transitions. [2023-11-29 05:45:33,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:33,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 96 transitions. [2023-11-29 05:45:33,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2023-11-29 05:45:33,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,536 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,536 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 118 flow. Second operand 4 states and 96 transitions. [2023-11-29 05:45:33,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 276 flow [2023-11-29 05:45:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 264 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 05:45:33,539 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 124 flow [2023-11-29 05:45:33,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-29 05:45:33,540 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-29 05:45:33,540 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 124 flow [2023-11-29 05:45:33,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:33,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:33,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:45:33,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:33,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -503728581, now seen corresponding path program 1 times [2023-11-29 05:45:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508278315] [2023-11-29 05:45:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:34,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508278315] [2023-11-29 05:45:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508278315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:34,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:34,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941331291] [2023-11-29 05:45:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:34,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:34,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:34,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:34,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:34,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:35,545 INFO L124 PetriNetUnfolderBase]: 1699/2863 cut-off events. [2023-11-29 05:45:35,545 INFO L125 PetriNetUnfolderBase]: For 780/784 co-relation queries the response was YES. [2023-11-29 05:45:35,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 2863 events. 1699/2863 cut-off events. For 780/784 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16077 event pairs, 108 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 6246. Up to 1730 conditions per place. [2023-11-29 05:45:35,562 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 27 changer transitions 4/150 dead transitions. [2023-11-29 05:45:35,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 150 transitions, 711 flow [2023-11-29 05:45:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:45:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:45:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 261 transitions. [2023-11-29 05:45:35,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2023-11-29 05:45:35,565 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 261 transitions. [2023-11-29 05:45:35,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 261 transitions. [2023-11-29 05:45:35,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:35,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 261 transitions. [2023-11-29 05:45:35,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.75) internal successors, (261), 12 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,570 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,570 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 124 flow. Second operand 12 states and 261 transitions. [2023-11-29 05:45:35,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 150 transitions, 711 flow [2023-11-29 05:45:35,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 150 transitions, 693 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 05:45:35,574 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 270 flow [2023-11-29 05:45:35,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=270, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-11-29 05:45:35,576 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-29 05:45:35,576 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 270 flow [2023-11-29 05:45:35,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:35,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:35,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:45:35,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:35,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1606494193, now seen corresponding path program 2 times [2023-11-29 05:45:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432295965] [2023-11-29 05:45:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:35,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432295965] [2023-11-29 05:45:35,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432295965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:35,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:35,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:45:35,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007108513] [2023-11-29 05:45:35,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:35,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:45:35,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:35,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:45:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:45:35,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:45:35,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:35,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:45:35,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:35,913 INFO L124 PetriNetUnfolderBase]: 1307/2260 cut-off events. [2023-11-29 05:45:35,913 INFO L125 PetriNetUnfolderBase]: For 1331/1335 co-relation queries the response was YES. [2023-11-29 05:45:35,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5958 conditions, 2260 events. 1307/2260 cut-off events. For 1331/1335 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11803 event pairs, 419 based on Foata normal form. 18/2214 useless extension candidates. Maximal degree in co-relation 5944. Up to 1846 conditions per place. [2023-11-29 05:45:35,930 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 63 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-29 05:45:35,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 421 flow [2023-11-29 05:45:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:45:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:45:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-29 05:45:35,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2023-11-29 05:45:35,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-29 05:45:35,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-29 05:45:35,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:35,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-29 05:45:35,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 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) [2023-11-29 05:45:35,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 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) [2023-11-29 05:45:35,933 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 270 flow. Second operand 3 states and 76 transitions. [2023-11-29 05:45:35,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 421 flow [2023-11-29 05:45:35,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:45:35,938 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 273 flow [2023-11-29 05:45:35,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-11-29 05:45:35,940 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-29 05:45:35,940 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 273 flow [2023-11-29 05:45:35,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:35,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:35,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:35,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:45:35,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:35,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1077678769, now seen corresponding path program 3 times [2023-11-29 05:45:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:35,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062683857] [2023-11-29 05:45:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:35,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:36,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:36,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062683857] [2023-11-29 05:45:36,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062683857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:36,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:36,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763418066] [2023-11-29 05:45:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:36,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:36,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:36,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:36,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 273 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:36,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:36,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:36,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:37,559 INFO L124 PetriNetUnfolderBase]: 1564/2687 cut-off events. [2023-11-29 05:45:37,559 INFO L125 PetriNetUnfolderBase]: For 2156/2156 co-relation queries the response was YES. [2023-11-29 05:45:37,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 2687 events. 1564/2687 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14784 event pairs, 387 based on Foata normal form. 1/2607 useless extension candidates. Maximal degree in co-relation 7454. Up to 1928 conditions per place. [2023-11-29 05:45:37,578 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 98 selfloop transitions, 28 changer transitions 4/137 dead transitions. [2023-11-29 05:45:37,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 798 flow [2023-11-29 05:45:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-29 05:45:37,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2023-11-29 05:45:37,580 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-29 05:45:37,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-29 05:45:37,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:37,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-29 05:45:37,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:37,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:37,583 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:37,584 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 273 flow. Second operand 11 states and 223 transitions. [2023-11-29 05:45:37,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 798 flow [2023-11-29 05:45:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 767 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-29 05:45:37,590 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 420 flow [2023-11-29 05:45:37,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=420, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2023-11-29 05:45:37,591 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2023-11-29 05:45:37,591 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 420 flow [2023-11-29 05:45:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:37,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:37,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:45:37,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:37,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash 447732539, now seen corresponding path program 4 times [2023-11-29 05:45:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:37,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474174164] [2023-11-29 05:45:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:38,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:38,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474174164] [2023-11-29 05:45:38,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474174164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:38,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:38,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:38,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098023537] [2023-11-29 05:45:38,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:38,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:38,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:38,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:38,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 420 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:38,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:38,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:38,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:39,452 INFO L124 PetriNetUnfolderBase]: 1717/2985 cut-off events. [2023-11-29 05:45:39,452 INFO L125 PetriNetUnfolderBase]: For 2989/2989 co-relation queries the response was YES. [2023-11-29 05:45:39,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 2985 events. 1717/2985 cut-off events. For 2989/2989 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16831 event pairs, 573 based on Foata normal form. 1/2902 useless extension candidates. Maximal degree in co-relation 8451. Up to 2066 conditions per place. [2023-11-29 05:45:39,477 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 111 selfloop transitions, 34 changer transitions 4/156 dead transitions. [2023-11-29 05:45:39,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 156 transitions, 1018 flow [2023-11-29 05:45:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-29 05:45:39,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2023-11-29 05:45:39,481 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-29 05:45:39,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-29 05:45:39,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:39,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-29 05:45:39,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:39,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:39,485 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:39,485 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 420 flow. Second operand 11 states and 232 transitions. [2023-11-29 05:45:39,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 156 transitions, 1018 flow [2023-11-29 05:45:39,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 987 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 05:45:39,496 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 615 flow [2023-11-29 05:45:39,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=615, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2023-11-29 05:45:39,498 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2023-11-29 05:45:39,498 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 615 flow [2023-11-29 05:45:39,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:39,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:39,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:45:39,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:39,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:39,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1490659131, now seen corresponding path program 5 times [2023-11-29 05:45:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:39,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269386378] [2023-11-29 05:45:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269386378] [2023-11-29 05:45:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269386378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:40,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606434062] [2023-11-29 05:45:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:40,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:40,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:40,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 615 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:40,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:40,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:40,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:41,395 INFO L124 PetriNetUnfolderBase]: 1953/3461 cut-off events. [2023-11-29 05:45:41,395 INFO L125 PetriNetUnfolderBase]: For 6403/6419 co-relation queries the response was YES. [2023-11-29 05:45:41,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 3461 events. 1953/3461 cut-off events. For 6403/6419 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21024 event pairs, 373 based on Foata normal form. 5/3358 useless extension candidates. Maximal degree in co-relation 10767. Up to 2100 conditions per place. [2023-11-29 05:45:41,424 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 45 changer transitions 4/184 dead transitions. [2023-11-29 05:45:41,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 184 transitions, 1310 flow [2023-11-29 05:45:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:45:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:45:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 260 transitions. [2023-11-29 05:45:41,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2023-11-29 05:45:41,427 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 260 transitions. [2023-11-29 05:45:41,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 260 transitions. [2023-11-29 05:45:41,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:41,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 260 transitions. [2023-11-29 05:45:41,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:41,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:41,430 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:41,430 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 615 flow. Second operand 12 states and 260 transitions. [2023-11-29 05:45:41,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 184 transitions, 1310 flow [2023-11-29 05:45:41,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 184 transitions, 1280 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-29 05:45:41,446 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 772 flow [2023-11-29 05:45:41,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2023-11-29 05:45:41,447 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2023-11-29 05:45:41,448 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 772 flow [2023-11-29 05:45:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:41,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:41,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:45:41,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:41,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1790488061, now seen corresponding path program 6 times [2023-11-29 05:45:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179327736] [2023-11-29 05:45:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179327736] [2023-11-29 05:45:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179327736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307796461] [2023-11-29 05:45:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:42,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:42,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:42,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:42,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:42,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:43,210 INFO L124 PetriNetUnfolderBase]: 2102/3768 cut-off events. [2023-11-29 05:45:43,210 INFO L125 PetriNetUnfolderBase]: For 9626/9642 co-relation queries the response was YES. [2023-11-29 05:45:43,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12483 conditions, 3768 events. 2102/3768 cut-off events. For 9626/9642 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23607 event pairs, 513 based on Foata normal form. 5/3654 useless extension candidates. Maximal degree in co-relation 12453. Up to 2569 conditions per place. [2023-11-29 05:45:43,242 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 133 selfloop transitions, 41 changer transitions 4/185 dead transitions. [2023-11-29 05:45:43,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 185 transitions, 1467 flow [2023-11-29 05:45:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:45:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:45:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2023-11-29 05:45:43,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2023-11-29 05:45:43,245 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 254 transitions. [2023-11-29 05:45:43,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 254 transitions. [2023-11-29 05:45:43,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:43,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 254 transitions. [2023-11-29 05:45:43,247 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) [2023-11-29 05:45:43,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:43,249 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:43,249 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 772 flow. Second operand 12 states and 254 transitions. [2023-11-29 05:45:43,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 185 transitions, 1467 flow [2023-11-29 05:45:43,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 185 transitions, 1376 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-29 05:45:43,278 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 850 flow [2023-11-29 05:45:43,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=850, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2023-11-29 05:45:43,280 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2023-11-29 05:45:43,280 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 850 flow [2023-11-29 05:45:43,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:43,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:43,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:43,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:45:43,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:43,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1014326441, now seen corresponding path program 7 times [2023-11-29 05:45:43,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:43,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163579924] [2023-11-29 05:45:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:44,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163579924] [2023-11-29 05:45:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163579924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:44,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:44,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842147049] [2023-11-29 05:45:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:44,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:44,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:44,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:44,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:44,866 INFO L124 PetriNetUnfolderBase]: 2102/3766 cut-off events. [2023-11-29 05:45:44,866 INFO L125 PetriNetUnfolderBase]: For 11908/11940 co-relation queries the response was YES. [2023-11-29 05:45:44,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12848 conditions, 3766 events. 2102/3766 cut-off events. For 11908/11940 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23567 event pairs, 533 based on Foata normal form. 21/3664 useless extension candidates. Maximal degree in co-relation 12814. Up to 2688 conditions per place. [2023-11-29 05:45:44,884 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 40 changer transitions 4/179 dead transitions. [2023-11-29 05:45:44,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 1484 flow [2023-11-29 05:45:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:45:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:45:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2023-11-29 05:45:44,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2023-11-29 05:45:44,886 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 244 transitions. [2023-11-29 05:45:44,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 244 transitions. [2023-11-29 05:45:44,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:44,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 244 transitions. [2023-11-29 05:45:44,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,889 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,889 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 850 flow. Second operand 12 states and 244 transitions. [2023-11-29 05:45:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 1484 flow [2023-11-29 05:45:44,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 179 transitions, 1375 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-11-29 05:45:44,906 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 872 flow [2023-11-29 05:45:44,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=872, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2023-11-29 05:45:44,906 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2023-11-29 05:45:44,906 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 872 flow [2023-11-29 05:45:44,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:44,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:45:44,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:44,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1148452041, now seen corresponding path program 8 times [2023-11-29 05:45:44,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956524999] [2023-11-29 05:45:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956524999] [2023-11-29 05:45:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956524999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:45,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646952165] [2023-11-29 05:45:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:45,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:45,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:45,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 872 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:45,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:45,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:45,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:46,545 INFO L124 PetriNetUnfolderBase]: 2288/4093 cut-off events. [2023-11-29 05:45:46,545 INFO L125 PetriNetUnfolderBase]: For 12908/12940 co-relation queries the response was YES. [2023-11-29 05:45:46,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 4093 events. 2288/4093 cut-off events. For 12908/12940 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 26101 event pairs, 785 based on Foata normal form. 9/3969 useless extension candidates. Maximal degree in co-relation 13926. Up to 3033 conditions per place. [2023-11-29 05:45:46,567 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 135 selfloop transitions, 36 changer transitions 4/182 dead transitions. [2023-11-29 05:45:46,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 1579 flow [2023-11-29 05:45:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2023-11-29 05:45:46,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44861660079051385 [2023-11-29 05:45:46,569 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 227 transitions. [2023-11-29 05:45:46,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 227 transitions. [2023-11-29 05:45:46,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:46,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 227 transitions. [2023-11-29 05:45:46,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:46,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:46,572 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:46,573 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 872 flow. Second operand 11 states and 227 transitions. [2023-11-29 05:45:46,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 1579 flow [2023-11-29 05:45:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 182 transitions, 1485 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-29 05:45:46,595 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 997 flow [2023-11-29 05:45:46,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2023-11-29 05:45:46,597 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2023-11-29 05:45:46,597 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 997 flow [2023-11-29 05:45:46,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:46,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:46,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:45:46,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:46,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1878574463, now seen corresponding path program 9 times [2023-11-29 05:45:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:46,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726279159] [2023-11-29 05:45:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726279159] [2023-11-29 05:45:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726279159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:47,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:47,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490649126] [2023-11-29 05:45:47,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:47,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:47,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:47,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:47,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:47,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:47,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:47,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:48,172 INFO L124 PetriNetUnfolderBase]: 2462/4428 cut-off events. [2023-11-29 05:45:48,173 INFO L125 PetriNetUnfolderBase]: For 22255/22295 co-relation queries the response was YES. [2023-11-29 05:45:48,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16146 conditions, 4428 events. 2462/4428 cut-off events. For 22255/22295 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29101 event pairs, 887 based on Foata normal form. 11/4300 useless extension candidates. Maximal degree in co-relation 16105. Up to 3310 conditions per place. [2023-11-29 05:45:48,202 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 147 selfloop transitions, 36 changer transitions 4/194 dead transitions. [2023-11-29 05:45:48,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 194 transitions, 1762 flow [2023-11-29 05:45:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2023-11-29 05:45:48,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-29 05:45:48,205 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 230 transitions. [2023-11-29 05:45:48,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 230 transitions. [2023-11-29 05:45:48,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:48,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 230 transitions. [2023-11-29 05:45:48,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:48,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:48,208 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:48,208 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 997 flow. Second operand 11 states and 230 transitions. [2023-11-29 05:45:48,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 194 transitions, 1762 flow [2023-11-29 05:45:48,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 1648 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-11-29 05:45:48,245 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 1091 flow [2023-11-29 05:45:48,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1091, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2023-11-29 05:45:48,246 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2023-11-29 05:45:48,246 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 1091 flow [2023-11-29 05:45:48,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:48,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:48,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:48,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:45:48,247 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:48,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:48,248 INFO L85 PathProgramCache]: Analyzing trace with hash 934765565, now seen corresponding path program 10 times [2023-11-29 05:45:48,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267605899] [2023-11-29 05:45:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:48,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:48,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267605899] [2023-11-29 05:45:48,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267605899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:48,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:48,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122813100] [2023-11-29 05:45:48,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:49,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:49,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 1091 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:49,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:49,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:49,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:49,839 INFO L124 PetriNetUnfolderBase]: 2672/4780 cut-off events. [2023-11-29 05:45:49,840 INFO L125 PetriNetUnfolderBase]: For 29442/29506 co-relation queries the response was YES. [2023-11-29 05:45:49,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18182 conditions, 4780 events. 2672/4780 cut-off events. For 29442/29506 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31790 event pairs, 977 based on Foata normal form. 9/4635 useless extension candidates. Maximal degree in co-relation 18137. Up to 3593 conditions per place. [2023-11-29 05:45:49,867 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 153 selfloop transitions, 37 changer transitions 4/201 dead transitions. [2023-11-29 05:45:49,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 201 transitions, 1899 flow [2023-11-29 05:45:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2023-11-29 05:45:49,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2023-11-29 05:45:49,869 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 231 transitions. [2023-11-29 05:45:49,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 231 transitions. [2023-11-29 05:45:49,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:49,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 231 transitions. [2023-11-29 05:45:49,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:49,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:49,871 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:49,871 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 1091 flow. Second operand 11 states and 231 transitions. [2023-11-29 05:45:49,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 201 transitions, 1899 flow [2023-11-29 05:45:49,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 201 transitions, 1773 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-29 05:45:49,928 INFO L231 Difference]: Finished difference. Result has 139 places, 139 transitions, 1187 flow [2023-11-29 05:45:49,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1187, PETRI_PLACES=139, PETRI_TRANSITIONS=139} [2023-11-29 05:45:49,929 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2023-11-29 05:45:49,929 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 139 transitions, 1187 flow [2023-11-29 05:45:49,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:49,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:49,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:49,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:45:49,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:49,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:49,930 INFO L85 PathProgramCache]: Analyzing trace with hash 646716533, now seen corresponding path program 11 times [2023-11-29 05:45:49,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:49,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086040040] [2023-11-29 05:45:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086040040] [2023-11-29 05:45:50,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086040040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:50,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:50,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:50,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023127906] [2023-11-29 05:45:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:50,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:50,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:50,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 139 transitions, 1187 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:50,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:50,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:50,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:51,454 INFO L124 PetriNetUnfolderBase]: 2746/4907 cut-off events. [2023-11-29 05:45:51,454 INFO L125 PetriNetUnfolderBase]: For 35529/35633 co-relation queries the response was YES. [2023-11-29 05:45:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19020 conditions, 4907 events. 2746/4907 cut-off events. For 35529/35633 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32814 event pairs, 1113 based on Foata normal form. 23/4778 useless extension candidates. Maximal degree in co-relation 18971. Up to 3889 conditions per place. [2023-11-29 05:45:51,481 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 36 changer transitions 5/193 dead transitions. [2023-11-29 05:45:51,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 1847 flow [2023-11-29 05:45:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2023-11-29 05:45:51,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2023-11-29 05:45:51,484 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 216 transitions. [2023-11-29 05:45:51,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 216 transitions. [2023-11-29 05:45:51,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:51,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 216 transitions. [2023-11-29 05:45:51,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.636363636363637) internal successors, (216), 11 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:51,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:51,486 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:51,487 INFO L175 Difference]: Start difference. First operand has 139 places, 139 transitions, 1187 flow. Second operand 11 states and 216 transitions. [2023-11-29 05:45:51,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 1847 flow [2023-11-29 05:45:51,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 193 transitions, 1715 flow, removed 47 selfloop flow, removed 6 redundant places. [2023-11-29 05:45:51,537 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 1222 flow [2023-11-29 05:45:51,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1222, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2023-11-29 05:45:51,538 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2023-11-29 05:45:51,538 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 1222 flow [2023-11-29 05:45:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:51,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:51,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:51,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:45:51,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:51,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash -994736065, now seen corresponding path program 12 times [2023-11-29 05:45:51,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:51,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088146785] [2023-11-29 05:45:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:51,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088146785] [2023-11-29 05:45:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088146785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:52,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:52,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:52,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619664144] [2023-11-29 05:45:52,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:52,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:52,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:52,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 145 transitions, 1222 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:52,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:52,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:52,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:53,428 INFO L124 PetriNetUnfolderBase]: 2936/5215 cut-off events. [2023-11-29 05:45:53,428 INFO L125 PetriNetUnfolderBase]: For 36767/36847 co-relation queries the response was YES. [2023-11-29 05:45:53,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20181 conditions, 5215 events. 2936/5215 cut-off events. For 36767/36847 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35366 event pairs, 1155 based on Foata normal form. 29/5096 useless extension candidates. Maximal degree in co-relation 20128. Up to 3919 conditions per place. [2023-11-29 05:45:53,455 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 158 selfloop transitions, 42 changer transitions 4/211 dead transitions. [2023-11-29 05:45:53,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 2064 flow [2023-11-29 05:45:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-29 05:45:53,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525691699604743 [2023-11-29 05:45:53,456 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-29 05:45:53,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-29 05:45:53,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:53,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-29 05:45:53,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:53,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:53,458 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:53,459 INFO L175 Difference]: Start difference. First operand has 146 places, 145 transitions, 1222 flow. Second operand 11 states and 229 transitions. [2023-11-29 05:45:53,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 2064 flow [2023-11-29 05:45:53,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1956 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-11-29 05:45:53,510 INFO L231 Difference]: Finished difference. Result has 153 places, 152 transitions, 1379 flow [2023-11-29 05:45:53,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1379, PETRI_PLACES=153, PETRI_TRANSITIONS=152} [2023-11-29 05:45:53,510 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2023-11-29 05:45:53,510 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 152 transitions, 1379 flow [2023-11-29 05:45:53,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:53,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:53,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:53,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:45:53,511 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:53,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1876532691, now seen corresponding path program 13 times [2023-11-29 05:45:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148787177] [2023-11-29 05:45:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:53,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:53,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148787177] [2023-11-29 05:45:53,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148787177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:53,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:53,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:53,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706242386] [2023-11-29 05:45:53,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:53,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:53,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:53,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:53,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:53,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:53,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 152 transitions, 1379 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:53,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:53,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:53,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:54,979 INFO L124 PetriNetUnfolderBase]: 2936/5219 cut-off events. [2023-11-29 05:45:54,979 INFO L125 PetriNetUnfolderBase]: For 43167/43231 co-relation queries the response was YES. [2023-11-29 05:45:55,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20910 conditions, 5219 events. 2936/5219 cut-off events. For 43167/43231 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35239 event pairs, 1197 based on Foata normal form. 19/5084 useless extension candidates. Maximal degree in co-relation 20853. Up to 4132 conditions per place. [2023-11-29 05:45:55,089 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 161 selfloop transitions, 37 changer transitions 5/210 dead transitions. [2023-11-29 05:45:55,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 2100 flow [2023-11-29 05:45:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-29 05:45:55,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2023-11-29 05:45:55,091 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-29 05:45:55,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-29 05:45:55,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:55,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-29 05:45:55,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,094 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,094 INFO L175 Difference]: Start difference. First operand has 153 places, 152 transitions, 1379 flow. Second operand 11 states and 223 transitions. [2023-11-29 05:45:55,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 2100 flow [2023-11-29 05:45:55,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 210 transitions, 1942 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-11-29 05:45:55,185 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 1348 flow [2023-11-29 05:45:55,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2023-11-29 05:45:55,186 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2023-11-29 05:45:55,186 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1348 flow [2023-11-29 05:45:55,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:55,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:45:55,187 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:55,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -935166021, now seen corresponding path program 14 times [2023-11-29 05:45:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393960455] [2023-11-29 05:45:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:55,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393960455] [2023-11-29 05:45:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393960455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:55,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:55,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:55,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383937540] [2023-11-29 05:45:55,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:55,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:55,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:55,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:55,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 1348 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:55,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:55,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:56,997 INFO L124 PetriNetUnfolderBase]: 2936/5211 cut-off events. [2023-11-29 05:45:56,998 INFO L125 PetriNetUnfolderBase]: For 38404/38490 co-relation queries the response was YES. [2023-11-29 05:45:57,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20280 conditions, 5211 events. 2936/5211 cut-off events. For 38404/38490 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35270 event pairs, 1205 based on Foata normal form. 35/5100 useless extension candidates. Maximal degree in co-relation 20220. Up to 4128 conditions per place. [2023-11-29 05:45:57,031 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 159 selfloop transitions, 41 changer transitions 5/212 dead transitions. [2023-11-29 05:45:57,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 212 transitions, 2041 flow [2023-11-29 05:45:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2023-11-29 05:45:57,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2023-11-29 05:45:57,033 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 222 transitions. [2023-11-29 05:45:57,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 222 transitions. [2023-11-29 05:45:57,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:57,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 222 transitions. [2023-11-29 05:45:57,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:57,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:57,035 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:57,035 INFO L175 Difference]: Start difference. First operand has 159 places, 156 transitions, 1348 flow. Second operand 11 states and 222 transitions. [2023-11-29 05:45:57,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 212 transitions, 2041 flow [2023-11-29 05:45:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 212 transitions, 1935 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-29 05:45:57,105 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 1388 flow [2023-11-29 05:45:57,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1388, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2023-11-29 05:45:57,106 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2023-11-29 05:45:57,106 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 1388 flow [2023-11-29 05:45:57,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:57,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:57,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:45:57,106 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:57,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash 391042775, now seen corresponding path program 15 times [2023-11-29 05:45:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392345173] [2023-11-29 05:45:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:57,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:57,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392345173] [2023-11-29 05:45:57,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392345173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:57,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:57,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:57,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844423439] [2023-11-29 05:45:57,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:57,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:57,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:57,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:57,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 1388 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:57,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:57,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:57,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:45:58,703 INFO L124 PetriNetUnfolderBase]: 2988/5302 cut-off events. [2023-11-29 05:45:58,703 INFO L125 PetriNetUnfolderBase]: For 38702/38788 co-relation queries the response was YES. [2023-11-29 05:45:58,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 5302 events. 2988/5302 cut-off events. For 38702/38788 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36098 event pairs, 1269 based on Foata normal form. 35/5181 useless extension candidates. Maximal degree in co-relation 20461. Up to 4280 conditions per place. [2023-11-29 05:45:58,741 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 165 selfloop transitions, 37 changer transitions 4/213 dead transitions. [2023-11-29 05:45:58,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 213 transitions, 2064 flow [2023-11-29 05:45:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:45:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:45:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2023-11-29 05:45:58,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2023-11-29 05:45:58,743 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 218 transitions. [2023-11-29 05:45:58,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 218 transitions. [2023-11-29 05:45:58,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:45:58,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 218 transitions. [2023-11-29 05:45:58,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 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) [2023-11-29 05:45:58,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:58,744 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:58,744 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 1388 flow. Second operand 11 states and 218 transitions. [2023-11-29 05:45:58,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 213 transitions, 2064 flow [2023-11-29 05:45:58,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 213 transitions, 1940 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-11-29 05:45:58,868 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1390 flow [2023-11-29 05:45:58,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2023-11-29 05:45:58,869 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 122 predicate places. [2023-11-29 05:45:58,869 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1390 flow [2023-11-29 05:45:58,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:58,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:45:58,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:45:58,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:45:58,869 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:45:58,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 503210621, now seen corresponding path program 16 times [2023-11-29 05:45:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266651013] [2023-11-29 05:45:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:45:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:59,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266651013] [2023-11-29 05:45:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266651013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:45:59,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:45:59,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:45:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795178872] [2023-11-29 05:45:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:45:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:59,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:45:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:59,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:45:59,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1390 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:59,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:45:59,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:45:59,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:00,478 INFO L124 PetriNetUnfolderBase]: 2988/5324 cut-off events. [2023-11-29 05:46:00,478 INFO L125 PetriNetUnfolderBase]: For 38110/38196 co-relation queries the response was YES. [2023-11-29 05:46:00,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20427 conditions, 5324 events. 2988/5324 cut-off events. For 38110/38196 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36364 event pairs, 1281 based on Foata normal form. 27/5191 useless extension candidates. Maximal degree in co-relation 20363. Up to 4298 conditions per place. [2023-11-29 05:46:00,512 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 166 selfloop transitions, 35 changer transitions 4/212 dead transitions. [2023-11-29 05:46:00,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 212 transitions, 2034 flow [2023-11-29 05:46:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2023-11-29 05:46:00,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42292490118577075 [2023-11-29 05:46:00,513 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 214 transitions. [2023-11-29 05:46:00,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 214 transitions. [2023-11-29 05:46:00,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:00,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 214 transitions. [2023-11-29 05:46:00,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.454545454545453) internal successors, (214), 11 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:00,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:00,514 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:00,514 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1390 flow. Second operand 11 states and 214 transitions. [2023-11-29 05:46:00,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 212 transitions, 2034 flow [2023-11-29 05:46:00,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 212 transitions, 1926 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:00,588 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1378 flow [2023-11-29 05:46:00,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2023-11-29 05:46:00,589 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2023-11-29 05:46:00,589 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1378 flow [2023-11-29 05:46:00,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:00,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:00,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:00,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:46:00,589 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:00,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash 29402885, now seen corresponding path program 17 times [2023-11-29 05:46:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318349822] [2023-11-29 05:46:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318349822] [2023-11-29 05:46:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318349822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535296575] [2023-11-29 05:46:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:01,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:01,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:01,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:01,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:01,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:02,737 INFO L124 PetriNetUnfolderBase]: 3296/5894 cut-off events. [2023-11-29 05:46:02,737 INFO L125 PetriNetUnfolderBase]: For 49841/49903 co-relation queries the response was YES. [2023-11-29 05:46:02,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23592 conditions, 5894 events. 3296/5894 cut-off events. For 49841/49903 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41580 event pairs, 1307 based on Foata normal form. 13/5733 useless extension candidates. Maximal degree in co-relation 23526. Up to 4356 conditions per place. [2023-11-29 05:46:02,789 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 198 selfloop transitions, 44 changer transitions 4/253 dead transitions. [2023-11-29 05:46:02,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 253 transitions, 2487 flow [2023-11-29 05:46:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:46:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:46:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 257 transitions. [2023-11-29 05:46:02,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46557971014492755 [2023-11-29 05:46:02,790 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 257 transitions. [2023-11-29 05:46:02,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 257 transitions. [2023-11-29 05:46:02,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:02,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 257 transitions. [2023-11-29 05:46:02,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.416666666666668) internal successors, (257), 12 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:02,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:02,793 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:02,793 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1378 flow. Second operand 12 states and 257 transitions. [2023-11-29 05:46:02,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 253 transitions, 2487 flow [2023-11-29 05:46:02,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 253 transitions, 2419 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:02,880 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 1647 flow [2023-11-29 05:46:02,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1647, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2023-11-29 05:46:02,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 133 predicate places. [2023-11-29 05:46:02,881 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 1647 flow [2023-11-29 05:46:02,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:02,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:02,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:46:02,882 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:02,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1577367699, now seen corresponding path program 18 times [2023-11-29 05:46:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:02,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925245486] [2023-11-29 05:46:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:03,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925245486] [2023-11-29 05:46:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925245486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:03,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:03,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66559943] [2023-11-29 05:46:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:03,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:03,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 1647 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:03,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:03,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:03,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:04,777 INFO L124 PetriNetUnfolderBase]: 3538/6340 cut-off events. [2023-11-29 05:46:04,777 INFO L125 PetriNetUnfolderBase]: For 69065/69199 co-relation queries the response was YES. [2023-11-29 05:46:04,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27003 conditions, 6340 events. 3538/6340 cut-off events. For 69065/69199 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 45564 event pairs, 1353 based on Foata normal form. 43/6202 useless extension candidates. Maximal degree in co-relation 26933. Up to 4613 conditions per place. [2023-11-29 05:46:04,830 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 192 selfloop transitions, 54 changer transitions 4/257 dead transitions. [2023-11-29 05:46:04,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 257 transitions, 2812 flow [2023-11-29 05:46:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:46:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:46:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 252 transitions. [2023-11-29 05:46:04,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2023-11-29 05:46:04,831 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 252 transitions. [2023-11-29 05:46:04,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 252 transitions. [2023-11-29 05:46:04,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:04,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 252 transitions. [2023-11-29 05:46:04,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.0) internal successors, (252), 12 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:04,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:04,833 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:04,833 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 1647 flow. Second operand 12 states and 252 transitions. [2023-11-29 05:46:04,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 257 transitions, 2812 flow [2023-11-29 05:46:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 257 transitions, 2586 flow, removed 96 selfloop flow, removed 5 redundant places. [2023-11-29 05:46:04,927 INFO L231 Difference]: Finished difference. Result has 188 places, 188 transitions, 1822 flow [2023-11-29 05:46:04,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1822, PETRI_PLACES=188, PETRI_TRANSITIONS=188} [2023-11-29 05:46:04,928 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 143 predicate places. [2023-11-29 05:46:04,928 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 188 transitions, 1822 flow [2023-11-29 05:46:04,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:04,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:04,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:04,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:46:04,928 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:04,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1771772917, now seen corresponding path program 19 times [2023-11-29 05:46:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894547973] [2023-11-29 05:46:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:04,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894547973] [2023-11-29 05:46:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894547973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:05,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560884847] [2023-11-29 05:46:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:05,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:05,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:05,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:05,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 188 transitions, 1822 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:05,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:05,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:05,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:06,858 INFO L124 PetriNetUnfolderBase]: 3676/6594 cut-off events. [2023-11-29 05:46:06,858 INFO L125 PetriNetUnfolderBase]: For 82884/82980 co-relation queries the response was YES. [2023-11-29 05:46:06,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28852 conditions, 6594 events. 3676/6594 cut-off events. For 82884/82980 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 47924 event pairs, 1479 based on Foata normal form. 19/6426 useless extension candidates. Maximal degree in co-relation 28777. Up to 4945 conditions per place. [2023-11-29 05:46:06,910 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 203 selfloop transitions, 49 changer transitions 4/263 dead transitions. [2023-11-29 05:46:06,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 263 transitions, 2884 flow [2023-11-29 05:46:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:46:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:46:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 251 transitions. [2023-11-29 05:46:06,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45471014492753625 [2023-11-29 05:46:06,912 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 251 transitions. [2023-11-29 05:46:06,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 251 transitions. [2023-11-29 05:46:06,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:06,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 251 transitions. [2023-11-29 05:46:06,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:06,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:06,913 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:06,913 INFO L175 Difference]: Start difference. First operand has 188 places, 188 transitions, 1822 flow. Second operand 12 states and 251 transitions. [2023-11-29 05:46:06,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 263 transitions, 2884 flow [2023-11-29 05:46:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 263 transitions, 2677 flow, removed 79 selfloop flow, removed 7 redundant places. [2023-11-29 05:46:07,048 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 1879 flow [2023-11-29 05:46:07,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1879, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2023-11-29 05:46:07,048 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 150 predicate places. [2023-11-29 05:46:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 1879 flow [2023-11-29 05:46:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:07,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:07,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:07,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:46:07,049 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:07,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -245836767, now seen corresponding path program 20 times [2023-11-29 05:46:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:07,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246430456] [2023-11-29 05:46:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246430456] [2023-11-29 05:46:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246430456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:07,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:07,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520442095] [2023-11-29 05:46:07,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:07,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:07,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:07,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 1879 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:07,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:07,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:07,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:08,914 INFO L124 PetriNetUnfolderBase]: 3676/6608 cut-off events. [2023-11-29 05:46:08,914 INFO L125 PetriNetUnfolderBase]: For 81392/81474 co-relation queries the response was YES. [2023-11-29 05:46:08,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28667 conditions, 6608 events. 3676/6608 cut-off events. For 81392/81474 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47952 event pairs, 1547 based on Foata normal form. 35/6454 useless extension candidates. Maximal degree in co-relation 28589. Up to 5100 conditions per place. [2023-11-29 05:46:08,959 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 196 selfloop transitions, 51 changer transitions 5/259 dead transitions. [2023-11-29 05:46:08,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 259 transitions, 2807 flow [2023-11-29 05:46:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:46:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:46:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2023-11-29 05:46:08,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2023-11-29 05:46:08,961 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 244 transitions. [2023-11-29 05:46:08,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 244 transitions. [2023-11-29 05:46:08,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:08,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 244 transitions. [2023-11-29 05:46:08,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:08,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:08,962 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:08,962 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 1879 flow. Second operand 12 states and 244 transitions. [2023-11-29 05:46:08,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 259 transitions, 2807 flow [2023-11-29 05:46:09,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 259 transitions, 2654 flow, removed 51 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:09,130 INFO L231 Difference]: Finished difference. Result has 200 places, 198 transitions, 1906 flow [2023-11-29 05:46:09,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1906, PETRI_PLACES=200, PETRI_TRANSITIONS=198} [2023-11-29 05:46:09,131 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 155 predicate places. [2023-11-29 05:46:09,131 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 198 transitions, 1906 flow [2023-11-29 05:46:09,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:09,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:09,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:09,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:46:09,132 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:09,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1045278081, now seen corresponding path program 21 times [2023-11-29 05:46:09,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:09,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483000549] [2023-11-29 05:46:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:09,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:09,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483000549] [2023-11-29 05:46:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483000549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:09,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:09,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:09,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215137912] [2023-11-29 05:46:09,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:09,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:09,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:09,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 198 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:09,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:09,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:09,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:11,113 INFO L124 PetriNetUnfolderBase]: 3850/6919 cut-off events. [2023-11-29 05:46:11,113 INFO L125 PetriNetUnfolderBase]: For 88965/89147 co-relation queries the response was YES. [2023-11-29 05:46:11,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30436 conditions, 6919 events. 3850/6919 cut-off events. For 88965/89147 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 50744 event pairs, 1807 based on Foata normal form. 43/6753 useless extension candidates. Maximal degree in co-relation 30356. Up to 5562 conditions per place. [2023-11-29 05:46:11,159 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 219 selfloop transitions, 36 changer transitions 4/266 dead transitions. [2023-11-29 05:46:11,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 266 transitions, 3121 flow [2023-11-29 05:46:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2023-11-29 05:46:11,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-29 05:46:11,160 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 230 transitions. [2023-11-29 05:46:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 230 transitions. [2023-11-29 05:46:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 230 transitions. [2023-11-29 05:46:11,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:11,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:11,162 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:11,162 INFO L175 Difference]: Start difference. First operand has 200 places, 198 transitions, 1906 flow. Second operand 11 states and 230 transitions. [2023-11-29 05:46:11,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 266 transitions, 3121 flow [2023-11-29 05:46:11,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 266 transitions, 2967 flow, removed 30 selfloop flow, removed 9 redundant places. [2023-11-29 05:46:11,300 INFO L231 Difference]: Finished difference. Result has 205 places, 207 transitions, 2129 flow [2023-11-29 05:46:11,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2129, PETRI_PLACES=205, PETRI_TRANSITIONS=207} [2023-11-29 05:46:11,300 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 160 predicate places. [2023-11-29 05:46:11,300 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 207 transitions, 2129 flow [2023-11-29 05:46:11,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:11,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:11,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:11,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:46:11,301 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:11,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash 41488413, now seen corresponding path program 22 times [2023-11-29 05:46:11,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:11,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144891459] [2023-11-29 05:46:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:11,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:11,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:11,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144891459] [2023-11-29 05:46:11,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144891459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:11,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:11,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238559696] [2023-11-29 05:46:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:11,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:11,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:11,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 207 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:11,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:11,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:11,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:13,352 INFO L124 PetriNetUnfolderBase]: 4096/7339 cut-off events. [2023-11-29 05:46:13,352 INFO L125 PetriNetUnfolderBase]: For 127838/128140 co-relation queries the response was YES. [2023-11-29 05:46:13,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34302 conditions, 7339 events. 4096/7339 cut-off events. For 127838/128140 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 54396 event pairs, 1889 based on Foata normal form. 43/7157 useless extension candidates. Maximal degree in co-relation 34218. Up to 5881 conditions per place. [2023-11-29 05:46:13,402 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 231 selfloop transitions, 37 changer transitions 4/279 dead transitions. [2023-11-29 05:46:13,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 279 transitions, 3404 flow [2023-11-29 05:46:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2023-11-29 05:46:13,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624505928853755 [2023-11-29 05:46:13,403 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 234 transitions. [2023-11-29 05:46:13,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 234 transitions. [2023-11-29 05:46:13,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:13,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 234 transitions. [2023-11-29 05:46:13,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:13,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:13,406 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:13,406 INFO L175 Difference]: Start difference. First operand has 205 places, 207 transitions, 2129 flow. Second operand 11 states and 234 transitions. [2023-11-29 05:46:13,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 279 transitions, 3404 flow [2023-11-29 05:46:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 279 transitions, 3114 flow, removed 128 selfloop flow, removed 5 redundant places. [2023-11-29 05:46:13,604 INFO L231 Difference]: Finished difference. Result has 214 places, 217 transitions, 2228 flow [2023-11-29 05:46:13,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2228, PETRI_PLACES=214, PETRI_TRANSITIONS=217} [2023-11-29 05:46:13,605 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 169 predicate places. [2023-11-29 05:46:13,605 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 217 transitions, 2228 flow [2023-11-29 05:46:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:13,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:13,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:13,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:46:13,605 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:13,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2017761769, now seen corresponding path program 23 times [2023-11-29 05:46:13,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:13,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381609860] [2023-11-29 05:46:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:14,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381609860] [2023-11-29 05:46:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381609860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:14,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:14,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648998584] [2023-11-29 05:46:14,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:14,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:14,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:14,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:14,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 217 transitions, 2228 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:14,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:14,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:14,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:15,623 INFO L124 PetriNetUnfolderBase]: 4170/7472 cut-off events. [2023-11-29 05:46:15,623 INFO L125 PetriNetUnfolderBase]: For 120593/120951 co-relation queries the response was YES. [2023-11-29 05:46:15,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34135 conditions, 7472 events. 4170/7472 cut-off events. For 120593/120951 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 55657 event pairs, 2017 based on Foata normal form. 57/7300 useless extension candidates. Maximal degree in co-relation 34046. Up to 6177 conditions per place. [2023-11-29 05:46:15,687 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 223 selfloop transitions, 36 changer transitions 5/271 dead transitions. [2023-11-29 05:46:15,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 271 transitions, 3192 flow [2023-11-29 05:46:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2023-11-29 05:46:15,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43280632411067194 [2023-11-29 05:46:15,689 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 219 transitions. [2023-11-29 05:46:15,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 219 transitions. [2023-11-29 05:46:15,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:15,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 219 transitions. [2023-11-29 05:46:15,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.90909090909091) internal successors, (219), 11 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:15,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:15,691 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:15,691 INFO L175 Difference]: Start difference. First operand has 214 places, 217 transitions, 2228 flow. Second operand 11 states and 219 transitions. [2023-11-29 05:46:15,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 271 transitions, 3192 flow [2023-11-29 05:46:15,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 271 transitions, 2982 flow, removed 88 selfloop flow, removed 5 redundant places. [2023-11-29 05:46:15,946 INFO L231 Difference]: Finished difference. Result has 222 places, 223 transitions, 2229 flow [2023-11-29 05:46:15,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2229, PETRI_PLACES=222, PETRI_TRANSITIONS=223} [2023-11-29 05:46:15,947 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 177 predicate places. [2023-11-29 05:46:15,947 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 223 transitions, 2229 flow [2023-11-29 05:46:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:15,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:15,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:15,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:46:15,948 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:15,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash 19691695, now seen corresponding path program 24 times [2023-11-29 05:46:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124395076] [2023-11-29 05:46:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:16,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:16,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124395076] [2023-11-29 05:46:16,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124395076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:16,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:16,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:16,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270886877] [2023-11-29 05:46:16,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:16,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:16,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:16,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:16,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:16,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:16,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 223 transitions, 2229 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:16,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:16,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:18,331 INFO L124 PetriNetUnfolderBase]: 4354/7781 cut-off events. [2023-11-29 05:46:18,331 INFO L125 PetriNetUnfolderBase]: For 117680/117904 co-relation queries the response was YES. [2023-11-29 05:46:18,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35227 conditions, 7781 events. 4354/7781 cut-off events. For 117680/117904 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 58362 event pairs, 2023 based on Foata normal form. 63/7612 useless extension candidates. Maximal degree in co-relation 35134. Up to 6207 conditions per place. [2023-11-29 05:46:18,438 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 236 selfloop transitions, 42 changer transitions 4/289 dead transitions. [2023-11-29 05:46:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 289 transitions, 3457 flow [2023-11-29 05:46:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-29 05:46:18,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2023-11-29 05:46:18,439 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-29 05:46:18,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-29 05:46:18,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:18,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-29 05:46:18,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:18,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:18,441 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:18,441 INFO L175 Difference]: Start difference. First operand has 222 places, 223 transitions, 2229 flow. Second operand 11 states and 232 transitions. [2023-11-29 05:46:18,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 289 transitions, 3457 flow [2023-11-29 05:46:18,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 289 transitions, 3295 flow, removed 61 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:18,752 INFO L231 Difference]: Finished difference. Result has 229 places, 230 transitions, 2422 flow [2023-11-29 05:46:18,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2422, PETRI_PLACES=229, PETRI_TRANSITIONS=230} [2023-11-29 05:46:18,753 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 184 predicate places. [2023-11-29 05:46:18,753 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 230 transitions, 2422 flow [2023-11-29 05:46:18,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:18,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:18,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:18,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:46:18,754 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:18,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1275132067, now seen corresponding path program 25 times [2023-11-29 05:46:18,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930893376] [2023-11-29 05:46:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:18,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:19,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:19,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930893376] [2023-11-29 05:46:19,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930893376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:19,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:19,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:19,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187920649] [2023-11-29 05:46:19,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:19,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:19,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:19,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:19,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 230 transitions, 2422 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:19,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:19,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:19,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:21,023 INFO L124 PetriNetUnfolderBase]: 4506/8091 cut-off events. [2023-11-29 05:46:21,023 INFO L125 PetriNetUnfolderBase]: For 153354/153589 co-relation queries the response was YES. [2023-11-29 05:46:21,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38425 conditions, 8091 events. 4506/8091 cut-off events. For 153354/153589 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 61641 event pairs, 2151 based on Foata normal form. 53/7892 useless extension candidates. Maximal degree in co-relation 38328. Up to 6597 conditions per place. [2023-11-29 05:46:21,116 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 254 selfloop transitions, 35 changer transitions 4/300 dead transitions. [2023-11-29 05:46:21,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 300 transitions, 3654 flow [2023-11-29 05:46:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2023-11-29 05:46:21,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624505928853755 [2023-11-29 05:46:21,117 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 234 transitions. [2023-11-29 05:46:21,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 234 transitions. [2023-11-29 05:46:21,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:21,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 234 transitions. [2023-11-29 05:46:21,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:21,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:21,119 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:21,119 INFO L175 Difference]: Start difference. First operand has 229 places, 230 transitions, 2422 flow. Second operand 11 states and 234 transitions. [2023-11-29 05:46:21,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 300 transitions, 3654 flow [2023-11-29 05:46:21,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 300 transitions, 3410 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:21,416 INFO L231 Difference]: Finished difference. Result has 236 places, 236 transitions, 2439 flow [2023-11-29 05:46:21,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2439, PETRI_PLACES=236, PETRI_TRANSITIONS=236} [2023-11-29 05:46:21,417 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 191 predicate places. [2023-11-29 05:46:21,417 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 236 transitions, 2439 flow [2023-11-29 05:46:21,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:21,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:21,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:21,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:46:21,417 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:21,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash -286708895, now seen corresponding path program 26 times [2023-11-29 05:46:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:21,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836191735] [2023-11-29 05:46:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:21,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:22,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:22,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836191735] [2023-11-29 05:46:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836191735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882208581] [2023-11-29 05:46:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:22,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:22,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:22,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 236 transitions, 2439 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:22,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:22,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:22,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:23,808 INFO L124 PetriNetUnfolderBase]: 4594/8222 cut-off events. [2023-11-29 05:46:23,809 INFO L125 PetriNetUnfolderBase]: For 155312/155548 co-relation queries the response was YES. [2023-11-29 05:46:23,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38588 conditions, 8222 events. 4594/8222 cut-off events. For 155312/155548 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 62629 event pairs, 2201 based on Foata normal form. 61/8033 useless extension candidates. Maximal degree in co-relation 38487. Up to 6720 conditions per place. [2023-11-29 05:46:23,901 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 252 selfloop transitions, 37 changer transitions 5/301 dead transitions. [2023-11-29 05:46:23,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 301 transitions, 3613 flow [2023-11-29 05:46:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-29 05:46:23,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2023-11-29 05:46:23,903 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-29 05:46:23,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-29 05:46:23,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:23,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-29 05:46:23,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:23,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:23,904 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:23,904 INFO L175 Difference]: Start difference. First operand has 236 places, 236 transitions, 2439 flow. Second operand 11 states and 232 transitions. [2023-11-29 05:46:23,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 301 transitions, 3613 flow [2023-11-29 05:46:24,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 301 transitions, 3430 flow, removed 73 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:24,176 INFO L231 Difference]: Finished difference. Result has 242 places, 240 transitions, 2506 flow [2023-11-29 05:46:24,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2506, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2023-11-29 05:46:24,177 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2023-11-29 05:46:24,177 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 2506 flow [2023-11-29 05:46:24,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:24,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:24,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:46:24,178 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:24,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1574100251, now seen corresponding path program 27 times [2023-11-29 05:46:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188791527] [2023-11-29 05:46:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188791527] [2023-11-29 05:46:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188791527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:24,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:24,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:24,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480960230] [2023-11-29 05:46:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:24,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:24,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:24,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:24,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:24,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:24,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:26,620 INFO L124 PetriNetUnfolderBase]: 4732/8496 cut-off events. [2023-11-29 05:46:26,620 INFO L125 PetriNetUnfolderBase]: For 174104/174324 co-relation queries the response was YES. [2023-11-29 05:46:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40487 conditions, 8496 events. 4732/8496 cut-off events. For 174104/174324 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 65438 event pairs, 2331 based on Foata normal form. 51/8286 useless extension candidates. Maximal degree in co-relation 40383. Up to 6970 conditions per place. [2023-11-29 05:46:26,709 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 261 selfloop transitions, 36 changer transitions 4/308 dead transitions. [2023-11-29 05:46:26,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 308 transitions, 3789 flow [2023-11-29 05:46:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:26,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2023-11-29 05:46:26,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2023-11-29 05:46:26,710 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2023-11-29 05:46:26,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2023-11-29 05:46:26,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:26,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2023-11-29 05:46:26,711 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) [2023-11-29 05:46:26,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:26,712 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:26,712 INFO L175 Difference]: Start difference. First operand has 242 places, 240 transitions, 2506 flow. Second operand 11 states and 233 transitions. [2023-11-29 05:46:26,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 308 transitions, 3789 flow [2023-11-29 05:46:26,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 308 transitions, 3594 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-11-29 05:46:26,938 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 2590 flow [2023-11-29 05:46:26,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2590, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2023-11-29 05:46:26,938 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 203 predicate places. [2023-11-29 05:46:26,938 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 2590 flow [2023-11-29 05:46:26,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:26,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:26,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 05:46:26,939 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:26,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1321888425, now seen corresponding path program 28 times [2023-11-29 05:46:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:26,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858489554] [2023-11-29 05:46:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:26,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:27,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858489554] [2023-11-29 05:46:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858489554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:27,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:27,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:27,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693027669] [2023-11-29 05:46:27,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:27,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:27,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:27,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:27,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:27,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:27,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 2590 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:27,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:27,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:29,188 INFO L124 PetriNetUnfolderBase]: 4732/8503 cut-off events. [2023-11-29 05:46:29,188 INFO L125 PetriNetUnfolderBase]: For 172959/173181 co-relation queries the response was YES. [2023-11-29 05:46:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40138 conditions, 8503 events. 4732/8503 cut-off events. For 172959/173181 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 65503 event pairs, 2313 based on Foata normal form. 57/8299 useless extension candidates. Maximal degree in co-relation 40030. Up to 7047 conditions per place. [2023-11-29 05:46:29,275 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 255 selfloop transitions, 37 changer transitions 5/304 dead transitions. [2023-11-29 05:46:29,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 304 transitions, 3677 flow [2023-11-29 05:46:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2023-11-29 05:46:29,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44664031620553357 [2023-11-29 05:46:29,276 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 226 transitions. [2023-11-29 05:46:29,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 226 transitions. [2023-11-29 05:46:29,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:29,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 226 transitions. [2023-11-29 05:46:29,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.545454545454547) internal successors, (226), 11 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:29,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:29,278 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:29,278 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 2590 flow. Second operand 11 states and 226 transitions. [2023-11-29 05:46:29,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 304 transitions, 3677 flow [2023-11-29 05:46:29,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 304 transitions, 3477 flow, removed 81 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:29,538 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 2539 flow [2023-11-29 05:46:29,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2539, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2023-11-29 05:46:29,539 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 209 predicate places. [2023-11-29 05:46:29,539 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 2539 flow [2023-11-29 05:46:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:29,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:29,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:46:29,540 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:29,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:29,540 INFO L85 PathProgramCache]: Analyzing trace with hash 695322973, now seen corresponding path program 29 times [2023-11-29 05:46:29,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:29,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280937179] [2023-11-29 05:46:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:29,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:29,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:29,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280937179] [2023-11-29 05:46:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280937179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:29,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730882498] [2023-11-29 05:46:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:29,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:29,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:29,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:29,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:29,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:31,809 INFO L124 PetriNetUnfolderBase]: 4732/8500 cut-off events. [2023-11-29 05:46:31,809 INFO L125 PetriNetUnfolderBase]: For 161455/161699 co-relation queries the response was YES. [2023-11-29 05:46:31,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39344 conditions, 8500 events. 4732/8500 cut-off events. For 161455/161699 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 65477 event pairs, 2345 based on Foata normal form. 73/8313 useless extension candidates. Maximal degree in co-relation 39233. Up to 7043 conditions per place. [2023-11-29 05:46:31,885 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 253 selfloop transitions, 41 changer transitions 5/306 dead transitions. [2023-11-29 05:46:31,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 306 transitions, 3574 flow [2023-11-29 05:46:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:31,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2023-11-29 05:46:31,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44466403162055335 [2023-11-29 05:46:31,887 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 225 transitions. [2023-11-29 05:46:31,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 225 transitions. [2023-11-29 05:46:31,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:31,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 225 transitions. [2023-11-29 05:46:31,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.454545454545453) internal successors, (225), 11 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:31,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:31,888 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:31,888 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 2539 flow. Second operand 11 states and 225 transitions. [2023-11-29 05:46:31,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 306 transitions, 3574 flow [2023-11-29 05:46:32,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 306 transitions, 3438 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:32,181 INFO L231 Difference]: Finished difference. Result has 258 places, 254 transitions, 2571 flow [2023-11-29 05:46:32,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2571, PETRI_PLACES=258, PETRI_TRANSITIONS=254} [2023-11-29 05:46:32,182 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 213 predicate places. [2023-11-29 05:46:32,182 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 254 transitions, 2571 flow [2023-11-29 05:46:32,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:32,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:32,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:32,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 05:46:32,182 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:32,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1130860193, now seen corresponding path program 30 times [2023-11-29 05:46:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:32,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895535709] [2023-11-29 05:46:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:32,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895535709] [2023-11-29 05:46:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895535709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:32,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:32,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710173920] [2023-11-29 05:46:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:32,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:32,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:32,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:32,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 254 transitions, 2571 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:32,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:32,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:32,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:34,615 INFO L124 PetriNetUnfolderBase]: 4784/8591 cut-off events. [2023-11-29 05:46:34,615 INFO L125 PetriNetUnfolderBase]: For 160587/160831 co-relation queries the response was YES. [2023-11-29 05:46:34,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39467 conditions, 8591 events. 4784/8591 cut-off events. For 160587/160831 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 66389 event pairs, 2413 based on Foata normal form. 73/8394 useless extension candidates. Maximal degree in co-relation 39354. Up to 7195 conditions per place. [2023-11-29 05:46:34,692 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 259 selfloop transitions, 37 changer transitions 4/307 dead transitions. [2023-11-29 05:46:34,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 3589 flow [2023-11-29 05:46:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2023-11-29 05:46:34,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367588932806324 [2023-11-29 05:46:34,693 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 221 transitions. [2023-11-29 05:46:34,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 221 transitions. [2023-11-29 05:46:34,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:34,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 221 transitions. [2023-11-29 05:46:34,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:34,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:34,695 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:34,695 INFO L175 Difference]: Start difference. First operand has 258 places, 254 transitions, 2571 flow. Second operand 11 states and 221 transitions. [2023-11-29 05:46:34,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 3589 flow [2023-11-29 05:46:34,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 307 transitions, 3435 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:34,993 INFO L231 Difference]: Finished difference. Result has 262 places, 257 transitions, 2565 flow [2023-11-29 05:46:34,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=262, PETRI_TRANSITIONS=257} [2023-11-29 05:46:34,994 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2023-11-29 05:46:34,994 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 257 transitions, 2565 flow [2023-11-29 05:46:34,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:34,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:34,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 05:46:34,995 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:34,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1063020123, now seen corresponding path program 31 times [2023-11-29 05:46:34,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:34,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105174016] [2023-11-29 05:46:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:34,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105174016] [2023-11-29 05:46:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105174016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:35,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:35,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335158415] [2023-11-29 05:46:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:35,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:35,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:35,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 257 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:35,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:35,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:35,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:37,411 INFO L124 PetriNetUnfolderBase]: 4784/8613 cut-off events. [2023-11-29 05:46:37,412 INFO L125 PetriNetUnfolderBase]: For 158281/158525 co-relation queries the response was YES. [2023-11-29 05:46:37,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39238 conditions, 8613 events. 4784/8613 cut-off events. For 158281/158525 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 66833 event pairs, 2425 based on Foata normal form. 65/8404 useless extension candidates. Maximal degree in co-relation 39123. Up to 7213 conditions per place. [2023-11-29 05:46:37,503 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 260 selfloop transitions, 35 changer transitions 4/306 dead transitions. [2023-11-29 05:46:37,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 306 transitions, 3529 flow [2023-11-29 05:46:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2023-11-29 05:46:37,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288537549407115 [2023-11-29 05:46:37,505 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 217 transitions. [2023-11-29 05:46:37,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 217 transitions. [2023-11-29 05:46:37,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:37,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 217 transitions. [2023-11-29 05:46:37,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:37,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:37,508 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:37,508 INFO L175 Difference]: Start difference. First operand has 262 places, 257 transitions, 2565 flow. Second operand 11 states and 217 transitions. [2023-11-29 05:46:37,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 306 transitions, 3529 flow [2023-11-29 05:46:37,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 306 transitions, 3389 flow, removed 34 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:37,911 INFO L231 Difference]: Finished difference. Result has 266 places, 259 transitions, 2521 flow [2023-11-29 05:46:37,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2521, PETRI_PLACES=266, PETRI_TRANSITIONS=259} [2023-11-29 05:46:37,912 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 221 predicate places. [2023-11-29 05:46:37,912 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 259 transitions, 2521 flow [2023-11-29 05:46:37,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:37,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:37,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 05:46:37,912 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:37,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash 566845467, now seen corresponding path program 32 times [2023-11-29 05:46:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:37,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955903630] [2023-11-29 05:46:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:37,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:38,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955903630] [2023-11-29 05:46:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955903630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:38,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472390308] [2023-11-29 05:46:38,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:38,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:38,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 259 transitions, 2521 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:38,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:38,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:38,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:40,608 INFO L124 PetriNetUnfolderBase]: 4962/8931 cut-off events. [2023-11-29 05:46:40,608 INFO L125 PetriNetUnfolderBase]: For 179249/179521 co-relation queries the response was YES. [2023-11-29 05:46:40,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41723 conditions, 8931 events. 4962/8931 cut-off events. For 179249/179521 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 69687 event pairs, 2455 based on Foata normal form. 57/8707 useless extension candidates. Maximal degree in co-relation 41606. Up to 7363 conditions per place. [2023-11-29 05:46:40,705 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 278 selfloop transitions, 35 changer transitions 4/324 dead transitions. [2023-11-29 05:46:40,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 324 transitions, 4014 flow [2023-11-29 05:46:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-29 05:46:40,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525691699604743 [2023-11-29 05:46:40,706 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-29 05:46:40,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-29 05:46:40,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:40,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-29 05:46:40,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:40,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:40,708 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:40,708 INFO L175 Difference]: Start difference. First operand has 266 places, 259 transitions, 2521 flow. Second operand 11 states and 229 transitions. [2023-11-29 05:46:40,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 324 transitions, 4014 flow [2023-11-29 05:46:41,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 324 transitions, 3946 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-11-29 05:46:41,154 INFO L231 Difference]: Finished difference. Result has 272 places, 268 transitions, 2932 flow [2023-11-29 05:46:41,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2932, PETRI_PLACES=272, PETRI_TRANSITIONS=268} [2023-11-29 05:46:41,155 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 227 predicate places. [2023-11-29 05:46:41,155 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 268 transitions, 2932 flow [2023-11-29 05:46:41,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:41,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:41,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:41,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 05:46:41,155 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:41,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1352601923, now seen corresponding path program 33 times [2023-11-29 05:46:41,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:41,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164506309] [2023-11-29 05:46:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:41,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:41,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:41,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164506309] [2023-11-29 05:46:41,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164506309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:41,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:41,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:41,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332603914] [2023-11-29 05:46:41,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:41,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:41,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:41,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:41,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 268 transitions, 2932 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:41,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:41,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:41,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:43,683 INFO L124 PetriNetUnfolderBase]: 5168/9283 cut-off events. [2023-11-29 05:46:43,683 INFO L125 PetriNetUnfolderBase]: For 248708/249142 co-relation queries the response was YES. [2023-11-29 05:46:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46428 conditions, 9283 events. 5168/9283 cut-off events. For 248708/249142 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 73023 event pairs, 2529 based on Foata normal form. 57/9048 useless extension candidates. Maximal degree in co-relation 46307. Up to 7626 conditions per place. [2023-11-29 05:46:43,790 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 289 selfloop transitions, 36 changer transitions 4/336 dead transitions. [2023-11-29 05:46:43,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 336 transitions, 4453 flow [2023-11-29 05:46:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2023-11-29 05:46:43,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2023-11-29 05:46:43,791 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2023-11-29 05:46:43,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2023-11-29 05:46:43,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:43,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2023-11-29 05:46:43,792 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) [2023-11-29 05:46:43,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:43,793 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:43,793 INFO L175 Difference]: Start difference. First operand has 272 places, 268 transitions, 2932 flow. Second operand 11 states and 233 transitions. [2023-11-29 05:46:43,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 336 transitions, 4453 flow [2023-11-29 05:46:44,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 336 transitions, 4123 flow, removed 149 selfloop flow, removed 5 redundant places. [2023-11-29 05:46:44,253 INFO L231 Difference]: Finished difference. Result has 281 places, 277 transitions, 3043 flow [2023-11-29 05:46:44,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3043, PETRI_PLACES=281, PETRI_TRANSITIONS=277} [2023-11-29 05:46:44,253 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 236 predicate places. [2023-11-29 05:46:44,253 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 277 transitions, 3043 flow [2023-11-29 05:46:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:44,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:44,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 05:46:44,254 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:44,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1648298235, now seen corresponding path program 34 times [2023-11-29 05:46:44,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:44,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317515247] [2023-11-29 05:46:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317515247] [2023-11-29 05:46:44,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317515247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:44,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875914857] [2023-11-29 05:46:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:44,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:44,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 277 transitions, 3043 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:44,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:44,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:44,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:46,742 INFO L124 PetriNetUnfolderBase]: 5242/9416 cut-off events. [2023-11-29 05:46:46,742 INFO L125 PetriNetUnfolderBase]: For 264334/264918 co-relation queries the response was YES. [2023-11-29 05:46:46,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46629 conditions, 9416 events. 5242/9416 cut-off events. For 264334/264918 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 74225 event pairs, 2657 based on Foata normal form. 71/9191 useless extension candidates. Maximal degree in co-relation 46503. Up to 7922 conditions per place. [2023-11-29 05:46:46,853 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 281 selfloop transitions, 35 changer transitions 5/328 dead transitions. [2023-11-29 05:46:46,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 328 transitions, 4177 flow [2023-11-29 05:46:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2023-11-29 05:46:46,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2023-11-29 05:46:46,855 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 218 transitions. [2023-11-29 05:46:46,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 218 transitions. [2023-11-29 05:46:46,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:46,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 218 transitions. [2023-11-29 05:46:46,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 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) [2023-11-29 05:46:46,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:46,857 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:46,857 INFO L175 Difference]: Start difference. First operand has 281 places, 277 transitions, 3043 flow. Second operand 11 states and 218 transitions. [2023-11-29 05:46:46,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 328 transitions, 4177 flow [2023-11-29 05:46:47,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 328 transitions, 3879 flow, removed 133 selfloop flow, removed 5 redundant places. [2023-11-29 05:46:47,477 INFO L231 Difference]: Finished difference. Result has 289 places, 283 transitions, 3000 flow [2023-11-29 05:46:47,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3000, PETRI_PLACES=289, PETRI_TRANSITIONS=283} [2023-11-29 05:46:47,478 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 244 predicate places. [2023-11-29 05:46:47,478 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 283 transitions, 3000 flow [2023-11-29 05:46:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 05:46:47,478 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:47,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1221571507, now seen corresponding path program 35 times [2023-11-29 05:46:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065472068] [2023-11-29 05:46:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:47,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065472068] [2023-11-29 05:46:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065472068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:47,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:47,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916887850] [2023-11-29 05:46:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:48,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:48,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 283 transitions, 3000 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:48,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:48,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:48,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:50,082 INFO L124 PetriNetUnfolderBase]: 5432/9724 cut-off events. [2023-11-29 05:46:50,082 INFO L125 PetriNetUnfolderBase]: For 262961/263257 co-relation queries the response was YES. [2023-11-29 05:46:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47631 conditions, 9724 events. 5432/9724 cut-off events. For 262961/263257 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 77010 event pairs, 2705 based on Foata normal form. 77/9503 useless extension candidates. Maximal degree in co-relation 47501. Up to 7952 conditions per place. [2023-11-29 05:46:50,195 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 294 selfloop transitions, 41 changer transitions 4/346 dead transitions. [2023-11-29 05:46:50,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 346 transitions, 4490 flow [2023-11-29 05:46:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2023-11-29 05:46:50,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2023-11-29 05:46:50,197 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 231 transitions. [2023-11-29 05:46:50,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 231 transitions. [2023-11-29 05:46:50,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:50,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 231 transitions. [2023-11-29 05:46:50,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:50,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:50,199 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:50,199 INFO L175 Difference]: Start difference. First operand has 289 places, 283 transitions, 3000 flow. Second operand 11 states and 231 transitions. [2023-11-29 05:46:50,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 346 transitions, 4490 flow [2023-11-29 05:46:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 346 transitions, 4272 flow, removed 90 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:51,007 INFO L231 Difference]: Finished difference. Result has 296 places, 290 transitions, 3231 flow [2023-11-29 05:46:51,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=296, PETRI_TRANSITIONS=290} [2023-11-29 05:46:51,007 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 251 predicate places. [2023-11-29 05:46:51,008 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 290 transitions, 3231 flow [2023-11-29 05:46:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:51,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:51,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:51,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 05:46:51,008 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:51,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1482609983, now seen corresponding path program 36 times [2023-11-29 05:46:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661507854] [2023-11-29 05:46:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:51,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:51,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661507854] [2023-11-29 05:46:51,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661507854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:51,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:51,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:51,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854379088] [2023-11-29 05:46:51,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:51,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:51,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:51,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:51,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:51,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 290 transitions, 3231 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:51,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:51,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:51,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:53,817 INFO L124 PetriNetUnfolderBase]: 5522/9901 cut-off events. [2023-11-29 05:46:53,817 INFO L125 PetriNetUnfolderBase]: For 306091/306393 co-relation queries the response was YES. [2023-11-29 05:46:53,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50044 conditions, 9901 events. 5522/9901 cut-off events. For 306091/306393 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 78934 event pairs, 2791 based on Foata normal form. 65/9665 useless extension candidates. Maximal degree in co-relation 49910. Up to 8232 conditions per place. [2023-11-29 05:46:53,961 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 311 selfloop transitions, 34 changer transitions 4/356 dead transitions. [2023-11-29 05:46:53,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 356 transitions, 4676 flow [2023-11-29 05:46:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2023-11-29 05:46:53,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2023-11-29 05:46:53,963 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2023-11-29 05:46:53,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2023-11-29 05:46:53,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:53,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2023-11-29 05:46:53,964 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) [2023-11-29 05:46:53,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:53,965 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:53,965 INFO L175 Difference]: Start difference. First operand has 296 places, 290 transitions, 3231 flow. Second operand 11 states and 233 transitions. [2023-11-29 05:46:53,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 356 transitions, 4676 flow [2023-11-29 05:46:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 356 transitions, 4350 flow, removed 144 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:54,661 INFO L231 Difference]: Finished difference. Result has 303 places, 295 transitions, 3217 flow [2023-11-29 05:46:54,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3217, PETRI_PLACES=303, PETRI_TRANSITIONS=295} [2023-11-29 05:46:54,661 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 258 predicate places. [2023-11-29 05:46:54,661 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 295 transitions, 3217 flow [2023-11-29 05:46:54,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:54,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:54,662 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, 1, 1, 1, 1] [2023-11-29 05:46:54,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 05:46:54,662 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:54,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1003751935, now seen corresponding path program 37 times [2023-11-29 05:46:54,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:54,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789279406] [2023-11-29 05:46:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:55,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789279406] [2023-11-29 05:46:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789279406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:55,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:55,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058147139] [2023-11-29 05:46:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:55,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:55,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 295 transitions, 3217 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:55,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:55,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:55,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:46:57,525 INFO L124 PetriNetUnfolderBase]: 5522/9881 cut-off events. [2023-11-29 05:46:57,525 INFO L125 PetriNetUnfolderBase]: For 292457/292751 co-relation queries the response was YES. [2023-11-29 05:46:57,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48607 conditions, 9881 events. 5522/9881 cut-off events. For 292457/292751 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 78536 event pairs, 2829 based on Foata normal form. 71/9651 useless extension candidates. Maximal degree in co-relation 48469. Up to 8342 conditions per place. [2023-11-29 05:46:57,665 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 305 selfloop transitions, 33 changer transitions 4/349 dead transitions. [2023-11-29 05:46:57,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 349 transitions, 4404 flow [2023-11-29 05:46:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:46:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:46:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2023-11-29 05:46:57,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2023-11-29 05:46:57,667 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 222 transitions. [2023-11-29 05:46:57,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 222 transitions. [2023-11-29 05:46:57,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:46:57,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 222 transitions. [2023-11-29 05:46:57,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:57,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:57,668 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:57,668 INFO L175 Difference]: Start difference. First operand has 303 places, 295 transitions, 3217 flow. Second operand 11 states and 222 transitions. [2023-11-29 05:46:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 349 transitions, 4404 flow [2023-11-29 05:46:58,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 349 transitions, 4159 flow, removed 105 selfloop flow, removed 6 redundant places. [2023-11-29 05:46:58,477 INFO L231 Difference]: Finished difference. Result has 309 places, 298 transitions, 3123 flow [2023-11-29 05:46:58,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3123, PETRI_PLACES=309, PETRI_TRANSITIONS=298} [2023-11-29 05:46:58,477 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2023-11-29 05:46:58,478 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 298 transitions, 3123 flow [2023-11-29 05:46:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:58,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:46:58,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 05:46:58,478 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:46:58,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash 38023297, now seen corresponding path program 38 times [2023-11-29 05:46:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331973359] [2023-11-29 05:46:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:46:58,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331973359] [2023-11-29 05:46:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331973359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:46:58,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:46:58,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:46:58,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947546828] [2023-11-29 05:46:58,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:58,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:46:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:46:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:59,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:46:59,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 298 transitions, 3123 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:59,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:46:59,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:46:59,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:01,351 INFO L124 PetriNetUnfolderBase]: 5612/10068 cut-off events. [2023-11-29 05:47:01,351 INFO L125 PetriNetUnfolderBase]: For 290360/290638 co-relation queries the response was YES. [2023-11-29 05:47:01,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49250 conditions, 10068 events. 5612/10068 cut-off events. For 290360/290638 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 80459 event pairs, 2907 based on Foata normal form. 61/9827 useless extension candidates. Maximal degree in co-relation 49109. Up to 8377 conditions per place. [2023-11-29 05:47:01,521 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 316 selfloop transitions, 35 changer transitions 4/362 dead transitions. [2023-11-29 05:47:01,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 362 transitions, 4593 flow [2023-11-29 05:47:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:47:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:47:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-29 05:47:01,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2023-11-29 05:47:01,522 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-29 05:47:01,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-29 05:47:01,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:01,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-29 05:47:01,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:01,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:01,524 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:01,525 INFO L175 Difference]: Start difference. First operand has 309 places, 298 transitions, 3123 flow. Second operand 11 states and 232 transitions. [2023-11-29 05:47:01,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 362 transitions, 4593 flow [2023-11-29 05:47:02,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 362 transitions, 4467 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-11-29 05:47:02,100 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 3319 flow [2023-11-29 05:47:02,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3319, PETRI_PLACES=314, PETRI_TRANSITIONS=303} [2023-11-29 05:47:02,101 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 269 predicate places. [2023-11-29 05:47:02,101 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 3319 flow [2023-11-29 05:47:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:02,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:02,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:02,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 05:47:02,101 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:02,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash 209654739, now seen corresponding path program 39 times [2023-11-29 05:47:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:02,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437518602] [2023-11-29 05:47:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:02,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:47:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437518602] [2023-11-29 05:47:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437518602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:02,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:47:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:47:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889266882] [2023-11-29 05:47:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:47:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:47:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:02,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:47:02,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 303 transitions, 3319 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:02,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:02,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:47:02,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:04,828 INFO L124 PetriNetUnfolderBase]: 5612/10074 cut-off events. [2023-11-29 05:47:04,828 INFO L125 PetriNetUnfolderBase]: For 304198/304476 co-relation queries the response was YES. [2023-11-29 05:47:04,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49671 conditions, 10074 events. 5612/10074 cut-off events. For 304198/304476 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 80457 event pairs, 2917 based on Foata normal form. 67/9838 useless extension candidates. Maximal degree in co-relation 49527. Up to 8454 conditions per place. [2023-11-29 05:47:04,974 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 310 selfloop transitions, 36 changer transitions 5/358 dead transitions. [2023-11-29 05:47:04,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 358 transitions, 4546 flow [2023-11-29 05:47:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:47:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:47:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2023-11-29 05:47:04,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44466403162055335 [2023-11-29 05:47:04,975 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 225 transitions. [2023-11-29 05:47:04,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 225 transitions. [2023-11-29 05:47:04,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:04,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 225 transitions. [2023-11-29 05:47:04,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.454545454545453) internal successors, (225), 11 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:04,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:04,977 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:04,977 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 3319 flow. Second operand 11 states and 225 transitions. [2023-11-29 05:47:04,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 358 transitions, 4546 flow [2023-11-29 05:47:05,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 358 transitions, 4286 flow, removed 112 selfloop flow, removed 6 redundant places. [2023-11-29 05:47:05,570 INFO L231 Difference]: Finished difference. Result has 320 places, 307 transitions, 3226 flow [2023-11-29 05:47:05,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3226, PETRI_PLACES=320, PETRI_TRANSITIONS=307} [2023-11-29 05:47:05,571 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2023-11-29 05:47:05,571 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 307 transitions, 3226 flow [2023-11-29 05:47:05,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:05,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:05,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:05,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 05:47:05,572 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:05,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash -110403009, now seen corresponding path program 40 times [2023-11-29 05:47:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299769654] [2023-11-29 05:47:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:47:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299769654] [2023-11-29 05:47:06,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299769654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:06,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:47:06,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:47:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604440999] [2023-11-29 05:47:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:06,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:47:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:47:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:06,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:47:06,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 307 transitions, 3226 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:06,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:06,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:47:06,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:08,478 INFO L124 PetriNetUnfolderBase]: 5664/10165 cut-off events. [2023-11-29 05:47:08,478 INFO L125 PetriNetUnfolderBase]: For 289310/289612 co-relation queries the response was YES. [2023-11-29 05:47:08,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48709 conditions, 10165 events. 5664/10165 cut-off events. For 289310/289612 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 81455 event pairs, 2981 based on Foata normal form. 83/9937 useless extension candidates. Maximal degree in co-relation 48562. Up to 8603 conditions per place. [2023-11-29 05:47:08,623 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 310 selfloop transitions, 36 changer transitions 4/357 dead transitions. [2023-11-29 05:47:08,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 357 transitions, 4356 flow [2023-11-29 05:47:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:47:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:47:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2023-11-29 05:47:08,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2023-11-29 05:47:08,625 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 220 transitions. [2023-11-29 05:47:08,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 220 transitions. [2023-11-29 05:47:08,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:08,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 220 transitions. [2023-11-29 05:47:08,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.0) internal successors, (220), 11 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:08,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:08,626 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:08,626 INFO L175 Difference]: Start difference. First operand has 320 places, 307 transitions, 3226 flow. Second operand 11 states and 220 transitions. [2023-11-29 05:47:08,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 357 transitions, 4356 flow [2023-11-29 05:47:09,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 357 transitions, 4190 flow, removed 49 selfloop flow, removed 8 redundant places. [2023-11-29 05:47:09,239 INFO L231 Difference]: Finished difference. Result has 324 places, 310 transitions, 3224 flow [2023-11-29 05:47:09,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3224, PETRI_PLACES=324, PETRI_TRANSITIONS=310} [2023-11-29 05:47:09,240 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 279 predicate places. [2023-11-29 05:47:09,240 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 310 transitions, 3224 flow [2023-11-29 05:47:09,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:09,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:09,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:09,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-29 05:47:09,240 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:09,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2095630971, now seen corresponding path program 41 times [2023-11-29 05:47:09,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:09,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284065281] [2023-11-29 05:47:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:09,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:47:09,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:09,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284065281] [2023-11-29 05:47:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284065281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:09,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:47:09,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:47:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507781912] [2023-11-29 05:47:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:09,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:47:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:47:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:09,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:47:09,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 310 transitions, 3224 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:09,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:09,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:47:09,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:12,129 INFO L124 PetriNetUnfolderBase]: 5664/10193 cut-off events. [2023-11-29 05:47:12,129 INFO L125 PetriNetUnfolderBase]: For 284893/285195 co-relation queries the response was YES. [2023-11-29 05:47:12,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48402 conditions, 10193 events. 5664/10193 cut-off events. For 284893/285195 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 81934 event pairs, 2949 based on Foata normal form. 83/9967 useless extension candidates. Maximal degree in co-relation 48253. Up to 8547 conditions per place. [2023-11-29 05:47:12,284 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 311 selfloop transitions, 40 changer transitions 5/363 dead transitions. [2023-11-29 05:47:12,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 363 transitions, 4389 flow [2023-11-29 05:47:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:47:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:47:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2023-11-29 05:47:12,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426877470355731 [2023-11-29 05:47:12,285 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 224 transitions. [2023-11-29 05:47:12,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 224 transitions. [2023-11-29 05:47:12,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:12,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 224 transitions. [2023-11-29 05:47:12,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:12,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:12,287 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:12,287 INFO L175 Difference]: Start difference. First operand has 324 places, 310 transitions, 3224 flow. Second operand 11 states and 224 transitions. [2023-11-29 05:47:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 363 transitions, 4389 flow [2023-11-29 05:47:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 363 transitions, 4223 flow, removed 49 selfloop flow, removed 8 redundant places. [2023-11-29 05:47:12,893 INFO L231 Difference]: Finished difference. Result has 328 places, 314 transitions, 3246 flow [2023-11-29 05:47:12,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3246, PETRI_PLACES=328, PETRI_TRANSITIONS=314} [2023-11-29 05:47:12,893 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2023-11-29 05:47:12,894 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 314 transitions, 3246 flow [2023-11-29 05:47:12,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:12,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:12,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:12,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-29 05:47:12,894 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:12,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1260579091, now seen corresponding path program 42 times [2023-11-29 05:47:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255211658] [2023-11-29 05:47:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:47:13,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:13,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255211658] [2023-11-29 05:47:13,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255211658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:13,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:47:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:47:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067413819] [2023-11-29 05:47:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:13,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:47:13,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:47:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:13,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-29 05:47:13,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 314 transitions, 3246 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:13,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:13,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-29 05:47:13,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:15,794 INFO L124 PetriNetUnfolderBase]: 5664/10185 cut-off events. [2023-11-29 05:47:15,795 INFO L125 PetriNetUnfolderBase]: For 283607/283909 co-relation queries the response was YES. [2023-11-29 05:47:15,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48321 conditions, 10185 events. 5664/10185 cut-off events. For 283607/283909 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 81865 event pairs, 2993 based on Foata normal form. 75/9945 useless extension candidates. Maximal degree in co-relation 48170. Up to 8620 conditions per place. [2023-11-29 05:47:15,942 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 315 selfloop transitions, 34 changer transitions 4/360 dead transitions. [2023-11-29 05:47:15,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 360 transitions, 4310 flow [2023-11-29 05:47:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:47:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:47:15,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2023-11-29 05:47:15,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2023-11-29 05:47:15,943 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 216 transitions. [2023-11-29 05:47:15,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 216 transitions. [2023-11-29 05:47:15,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:15,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 216 transitions. [2023-11-29 05:47:15,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.636363636363637) internal successors, (216), 11 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:15,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:15,945 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:15,945 INFO L175 Difference]: Start difference. First operand has 328 places, 314 transitions, 3246 flow. Second operand 11 states and 216 transitions. [2023-11-29 05:47:15,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 360 transitions, 4310 flow [2023-11-29 05:47:16,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 360 transitions, 4124 flow, removed 55 selfloop flow, removed 8 redundant places. [2023-11-29 05:47:16,604 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 3152 flow [2023-11-29 05:47:16,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3152, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2023-11-29 05:47:16,604 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 287 predicate places. [2023-11-29 05:47:16,604 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 3152 flow [2023-11-29 05:47:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:16,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:16,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-29 05:47:16,605 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:16,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2019364475, now seen corresponding path program 1 times [2023-11-29 05:47:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171750780] [2023-11-29 05:47:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171750780] [2023-11-29 05:47:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171750780] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936194872] [2023-11-29 05:47:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:16,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:16,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:16,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:16,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:47:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:16,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:47:16,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:16,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936194872] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:47:17,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:47:17,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 05:47:17,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865092974] [2023-11-29 05:47:17,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:47:17,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:47:17,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:47:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:17,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:47:17,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 316 transitions, 3152 flow. Second operand has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:17,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:17,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:47:17,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:20,872 INFO L124 PetriNetUnfolderBase]: 9506/18012 cut-off events. [2023-11-29 05:47:20,872 INFO L125 PetriNetUnfolderBase]: For 601742/602752 co-relation queries the response was YES. [2023-11-29 05:47:21,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87046 conditions, 18012 events. 9506/18012 cut-off events. For 601742/602752 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 168201 event pairs, 5954 based on Foata normal form. 553/17900 useless extension candidates. Maximal degree in co-relation 86893. Up to 7693 conditions per place. [2023-11-29 05:47:21,246 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 526 selfloop transitions, 6 changer transitions 12/590 dead transitions. [2023-11-29 05:47:21,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 590 transitions, 7067 flow [2023-11-29 05:47:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:47:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:47:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2023-11-29 05:47:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468944099378882 [2023-11-29 05:47:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 151 transitions. [2023-11-29 05:47:21,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 151 transitions. [2023-11-29 05:47:21,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:21,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 151 transitions. [2023-11-29 05:47:21,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 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) [2023-11-29 05:47:21,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:21,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:21,248 INFO L175 Difference]: Start difference. First operand has 332 places, 316 transitions, 3152 flow. Second operand 7 states and 151 transitions. [2023-11-29 05:47:21,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 590 transitions, 7067 flow [2023-11-29 05:47:22,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 590 transitions, 6935 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-29 05:47:22,589 INFO L231 Difference]: Finished difference. Result has 334 places, 320 transitions, 3141 flow [2023-11-29 05:47:22,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3141, PETRI_PLACES=334, PETRI_TRANSITIONS=320} [2023-11-29 05:47:22,590 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 289 predicate places. [2023-11-29 05:47:22,590 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 320 transitions, 3141 flow [2023-11-29 05:47:22,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:22,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:22,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:22,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:22,791 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:22,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 327802794, now seen corresponding path program 2 times [2023-11-29 05:47:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374549124] [2023-11-29 05:47:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:23,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374549124] [2023-11-29 05:47:23,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374549124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:23,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076316763] [2023-11-29 05:47:23,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:47:23,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:23,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:23,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:23,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:47:23,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:47:23,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:47:23,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:23,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:47:23,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:23,805 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 05:47:23,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-29 05:47:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:47:23,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076316763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:47:23,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:47:23,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 14 [2023-11-29 05:47:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687031163] [2023-11-29 05:47:23,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:47:23,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:47:23,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:47:23,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:47:23,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2023-11-29 05:47:23,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 320 transitions, 3141 flow. Second operand has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 15 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:23,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:23,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2023-11-29 05:47:23,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:30,739 INFO L124 PetriNetUnfolderBase]: 14058/25333 cut-off events. [2023-11-29 05:47:30,740 INFO L125 PetriNetUnfolderBase]: For 877019/878113 co-relation queries the response was YES. [2023-11-29 05:47:31,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122906 conditions, 25333 events. 14058/25333 cut-off events. For 877019/878113 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 230310 event pairs, 5977 based on Foata normal form. 529/24623 useless extension candidates. Maximal degree in co-relation 122749. Up to 16752 conditions per place. [2023-11-29 05:47:31,189 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 449 selfloop transitions, 25 changer transitions 0/518 dead transitions. [2023-11-29 05:47:31,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 518 transitions, 6144 flow [2023-11-29 05:47:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:47:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:47:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 304 transitions. [2023-11-29 05:47:31,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887468030690537 [2023-11-29 05:47:31,190 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 304 transitions. [2023-11-29 05:47:31,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 304 transitions. [2023-11-29 05:47:31,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:31,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 304 transitions. [2023-11-29 05:47:31,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:31,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:31,192 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:31,192 INFO L175 Difference]: Start difference. First operand has 334 places, 320 transitions, 3141 flow. Second operand 17 states and 304 transitions. [2023-11-29 05:47:31,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 518 transitions, 6144 flow [2023-11-29 05:47:32,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 518 transitions, 6109 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-29 05:47:32,681 INFO L231 Difference]: Finished difference. Result has 353 places, 335 transitions, 3288 flow [2023-11-29 05:47:32,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3288, PETRI_PLACES=353, PETRI_TRANSITIONS=335} [2023-11-29 05:47:32,682 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2023-11-29 05:47:32,682 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 335 transitions, 3288 flow [2023-11-29 05:47:32,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 15 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:32,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:32,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:32,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:47:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 05:47:32,883 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:32,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1640920437, now seen corresponding path program 1 times [2023-11-29 05:47:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005615279] [2023-11-29 05:47:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:33,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005615279] [2023-11-29 05:47:33,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005615279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111287766] [2023-11-29 05:47:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:33,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:33,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:33,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:47:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:33,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:47:33,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:47:33,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111287766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 05:47:33,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813180464] [2023-11-29 05:47:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:33,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:47:33,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:47:33,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 335 transitions, 3288 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:33,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:33,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:47:33,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:39,004 INFO L124 PetriNetUnfolderBase]: 11220/21443 cut-off events. [2023-11-29 05:47:39,004 INFO L125 PetriNetUnfolderBase]: For 924071/927221 co-relation queries the response was YES. [2023-11-29 05:47:39,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114096 conditions, 21443 events. 11220/21443 cut-off events. For 924071/927221 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 203009 event pairs, 4051 based on Foata normal form. 2080/23377 useless extension candidates. Maximal degree in co-relation 113935. Up to 9632 conditions per place. [2023-11-29 05:47:39,374 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 439 selfloop transitions, 34 changer transitions 0/520 dead transitions. [2023-11-29 05:47:39,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 520 transitions, 6332 flow [2023-11-29 05:47:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:47:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-29 05:47:39,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2023-11-29 05:47:39,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-29 05:47:39,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-29 05:47:39,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:39,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-29 05:47:39,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:39,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:39,376 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:39,376 INFO L175 Difference]: Start difference. First operand has 353 places, 335 transitions, 3288 flow. Second operand 4 states and 120 transitions. [2023-11-29 05:47:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 520 transitions, 6332 flow [2023-11-29 05:47:42,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 520 transitions, 6295 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-29 05:47:42,192 INFO L231 Difference]: Finished difference. Result has 354 places, 346 transitions, 3622 flow [2023-11-29 05:47:42,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3622, PETRI_PLACES=354, PETRI_TRANSITIONS=346} [2023-11-29 05:47:42,193 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 309 predicate places. [2023-11-29 05:47:42,193 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 346 transitions, 3622 flow [2023-11-29 05:47:42,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:42,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:42,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:42,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:47:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 05:47:42,393 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:42,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 87722292, now seen corresponding path program 1 times [2023-11-29 05:47:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253856942] [2023-11-29 05:47:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253856942] [2023-11-29 05:47:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253856942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628414195] [2023-11-29 05:47:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:42,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:42,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:42,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:47:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:47:42,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:47:42,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628414195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:42,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:42,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 05:47:42,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039800344] [2023-11-29 05:47:42,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:42,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:47:42,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:47:42,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 346 transitions, 3622 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:42,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:42,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:47:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:47,814 INFO L124 PetriNetUnfolderBase]: 9450/18846 cut-off events. [2023-11-29 05:47:47,814 INFO L125 PetriNetUnfolderBase]: For 979826/984458 co-relation queries the response was YES. [2023-11-29 05:47:48,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118822 conditions, 18846 events. 9450/18846 cut-off events. For 979826/984458 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 173879 event pairs, 4491 based on Foata normal form. 1788/20572 useless extension candidates. Maximal degree in co-relation 118658. Up to 8168 conditions per place. [2023-11-29 05:47:48,284 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 113 selfloop transitions, 12 changer transitions 141/275 dead transitions. [2023-11-29 05:47:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 275 transitions, 3945 flow [2023-11-29 05:47:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:47:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2023-11-29 05:47:48,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2023-11-29 05:47:48,285 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 126 transitions. [2023-11-29 05:47:48,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 126 transitions. [2023-11-29 05:47:48,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:48,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 126 transitions. [2023-11-29 05:47:48,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:48,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:48,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:48,286 INFO L175 Difference]: Start difference. First operand has 354 places, 346 transitions, 3622 flow. Second operand 4 states and 126 transitions. [2023-11-29 05:47:48,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 275 transitions, 3945 flow [2023-11-29 05:47:51,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 275 transitions, 3692 flow, removed 39 selfloop flow, removed 16 redundant places. [2023-11-29 05:47:51,337 INFO L231 Difference]: Finished difference. Result has 343 places, 78 transitions, 1014 flow [2023-11-29 05:47:51,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1014, PETRI_PLACES=343, PETRI_TRANSITIONS=78} [2023-11-29 05:47:51,338 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2023-11-29 05:47:51,338 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 78 transitions, 1014 flow [2023-11-29 05:47:51,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:51,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:51,338 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:51,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:47:51,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 05:47:51,539 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:51,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash -766706449, now seen corresponding path program 1 times [2023-11-29 05:47:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:51,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731451172] [2023-11-29 05:47:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:51,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:47:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731451172] [2023-11-29 05:47:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731451172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791678709] [2023-11-29 05:47:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:51,684 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:51,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:47:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:47:51,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:47:51,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:47:52,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791678709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:47:52,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:47:52,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-29 05:47:52,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312487353] [2023-11-29 05:47:52,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:47:52,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:47:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:47:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:52,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-29 05:47:52,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 78 transitions, 1014 flow. Second operand has 12 states, 12 states have (on average 15.916666666666666) internal successors, (191), 12 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) [2023-11-29 05:47:52,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:47:52,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-29 05:47:52,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:47:56,052 INFO L124 PetriNetUnfolderBase]: 9258/17021 cut-off events. [2023-11-29 05:47:56,052 INFO L125 PetriNetUnfolderBase]: For 1046637/1050149 co-relation queries the response was YES. [2023-11-29 05:47:56,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129892 conditions, 17021 events. 9258/17021 cut-off events. For 1046637/1050149 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 133813 event pairs, 5936 based on Foata normal form. 246/17165 useless extension candidates. Maximal degree in co-relation 129741. Up to 9496 conditions per place. [2023-11-29 05:47:56,446 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 65 selfloop transitions, 5 changer transitions 67/146 dead transitions. [2023-11-29 05:47:56,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 146 transitions, 2125 flow [2023-11-29 05:47:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:47:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:47:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2023-11-29 05:47:56,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2023-11-29 05:47:56,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 136 transitions. [2023-11-29 05:47:56,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 136 transitions. [2023-11-29 05:47:56,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:47:56,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 136 transitions. [2023-11-29 05:47:56,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:56,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:56,448 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:56,448 INFO L175 Difference]: Start difference. First operand has 343 places, 78 transitions, 1014 flow. Second operand 6 states and 136 transitions. [2023-11-29 05:47:56,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 146 transitions, 2125 flow [2023-11-29 05:47:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 146 transitions, 1150 flow, removed 279 selfloop flow, removed 113 redundant places. [2023-11-29 05:47:57,992 INFO L231 Difference]: Finished difference. Result has 108 places, 79 transitions, 489 flow [2023-11-29 05:47:57,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=108, PETRI_TRANSITIONS=79} [2023-11-29 05:47:57,992 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2023-11-29 05:47:57,992 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 79 transitions, 489 flow [2023-11-29 05:47:57,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.916666666666666) internal successors, (191), 12 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) [2023-11-29 05:47:57,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:47:57,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:57,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:47:58,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:58,193 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:47:58,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash -292526123, now seen corresponding path program 2 times [2023-11-29 05:47:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:58,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743000073] [2023-11-29 05:47:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:58,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:47:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743000073] [2023-11-29 05:47:58,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743000073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685523646] [2023-11-29 05:47:58,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:47:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:58,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:58,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:58,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:47:59,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:47:59,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:47:59,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:47:59,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:59,790 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-29 05:47:59,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2023-11-29 05:47:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:47:59,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:00,341 INFO L349 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2023-11-29 05:48:00,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2023-11-29 05:48:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:48:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685523646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:00,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:48:00,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2023-11-29 05:48:00,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781891197] [2023-11-29 05:48:00,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:00,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 05:48:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 05:48:00,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:48:00,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-29 05:48:00,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 79 transitions, 489 flow. Second operand has 31 states, 31 states have (on average 10.35483870967742) internal successors, (321), 31 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:00,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:00,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-29 05:48:00,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:10,061 INFO L124 PetriNetUnfolderBase]: 43131/66478 cut-off events. [2023-11-29 05:48:10,061 INFO L125 PetriNetUnfolderBase]: For 117030/117030 co-relation queries the response was YES. [2023-11-29 05:48:10,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206688 conditions, 66478 events. 43131/66478 cut-off events. For 117030/117030 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 486494 event pairs, 1014 based on Foata normal form. 1296/64896 useless extension candidates. Maximal degree in co-relation 206645. Up to 10501 conditions per place. [2023-11-29 05:48:10,554 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 416 selfloop transitions, 79 changer transitions 27/526 dead transitions. [2023-11-29 05:48:10,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 526 transitions, 3974 flow [2023-11-29 05:48:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 05:48:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 05:48:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 519 transitions. [2023-11-29 05:48:10,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45130434782608697 [2023-11-29 05:48:10,556 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 519 transitions. [2023-11-29 05:48:10,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 519 transitions. [2023-11-29 05:48:10,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:10,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 519 transitions. [2023-11-29 05:48:10,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.76) internal successors, (519), 25 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:10,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 46.0) internal successors, (1196), 26 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:10,558 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 46.0) internal successors, (1196), 26 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:10,559 INFO L175 Difference]: Start difference. First operand has 108 places, 79 transitions, 489 flow. Second operand 25 states and 519 transitions. [2023-11-29 05:48:10,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 526 transitions, 3974 flow [2023-11-29 05:48:10,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 526 transitions, 3941 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-29 05:48:10,663 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 1330 flow [2023-11-29 05:48:10,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1330, PETRI_PLACES=138, PETRI_TRANSITIONS=146} [2023-11-29 05:48:10,663 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2023-11-29 05:48:10,663 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 1330 flow [2023-11-29 05:48:10,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.35483870967742) internal successors, (321), 31 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:10,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:10,664 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:10,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:48:10,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:10,864 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:48:10,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2060084909, now seen corresponding path program 3 times [2023-11-29 05:48:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:10,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815288277] [2023-11-29 05:48:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815288277] [2023-11-29 05:48:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815288277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:48:12,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056997555] [2023-11-29 05:48:12,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:48:12,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:12,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:12,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:48:12,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:48:13,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:48:13,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:48:13,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 05:48:13,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:48:13,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:14,081 INFO L349 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2023-11-29 05:48:14,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2023-11-29 05:48:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:48:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056997555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:14,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:48:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 34 [2023-11-29 05:48:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202717140] [2023-11-29 05:48:14,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:14,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 05:48:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 05:48:14,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:48:14,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-29 05:48:14,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 146 transitions, 1330 flow. Second operand has 35 states, 35 states have (on average 10.114285714285714) internal successors, (354), 35 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:14,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:14,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-29 05:48:14,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:20,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:48:24,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:48:39,814 INFO L124 PetriNetUnfolderBase]: 60642/93638 cut-off events. [2023-11-29 05:48:39,814 INFO L125 PetriNetUnfolderBase]: For 392270/392270 co-relation queries the response was YES. [2023-11-29 05:48:40,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363875 conditions, 93638 events. 60642/93638 cut-off events. For 392270/392270 co-relation queries the response was YES. Maximal size of possible extension queue 2384. Compared 730515 event pairs, 21016 based on Foata normal form. 1290/94924 useless extension candidates. Maximal degree in co-relation 363822. Up to 46183 conditions per place. [2023-11-29 05:48:40,655 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 447 selfloop transitions, 116 changer transitions 0/567 dead transitions. [2023-11-29 05:48:40,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 567 transitions, 5504 flow [2023-11-29 05:48:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:48:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 05:48:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 577 transitions. [2023-11-29 05:48:40,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3801054018445323 [2023-11-29 05:48:40,657 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 577 transitions. [2023-11-29 05:48:40,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 577 transitions. [2023-11-29 05:48:40,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:40,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 577 transitions. [2023-11-29 05:48:40,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 17.484848484848484) internal successors, (577), 33 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:40,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 46.0) internal successors, (1564), 34 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:40,660 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 46.0) internal successors, (1564), 34 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:40,661 INFO L175 Difference]: Start difference. First operand has 138 places, 146 transitions, 1330 flow. Second operand 33 states and 577 transitions. [2023-11-29 05:48:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 567 transitions, 5504 flow [2023-11-29 05:48:42,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 567 transitions, 5279 flow, removed 86 selfloop flow, removed 6 redundant places. [2023-11-29 05:48:42,294 INFO L231 Difference]: Finished difference. Result has 181 places, 230 transitions, 2627 flow [2023-11-29 05:48:42,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2627, PETRI_PLACES=181, PETRI_TRANSITIONS=230} [2023-11-29 05:48:42,294 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 136 predicate places. [2023-11-29 05:48:42,294 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 230 transitions, 2627 flow [2023-11-29 05:48:42,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.114285714285714) internal successors, (354), 35 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:42,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:42,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:42,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:48:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:42,495 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:48:42,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1847290412, now seen corresponding path program 4 times [2023-11-29 05:48:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394648771] [2023-11-29 05:48:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 05:48:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394648771] [2023-11-29 05:48:43,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394648771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:48:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179823275] [2023-11-29 05:48:43,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:48:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:43,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:48:43,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:48:43,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:48:43,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:48:43,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 05:48:43,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 05:48:43,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:44,103 INFO L349 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2023-11-29 05:48:44,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2023-11-29 05:48:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:48:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179823275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:44,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:48:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 23 [2023-11-29 05:48:44,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940823648] [2023-11-29 05:48:44,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 05:48:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 05:48:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:48:44,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-29 05:48:44,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 230 transitions, 2627 flow. Second operand has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:44,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:44,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-29 05:48:44,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:16,786 INFO L124 PetriNetUnfolderBase]: 106997/166125 cut-off events. [2023-11-29 05:49:16,786 INFO L125 PetriNetUnfolderBase]: For 1063539/1063539 co-relation queries the response was YES. [2023-11-29 05:49:18,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709280 conditions, 166125 events. 106997/166125 cut-off events. For 1063539/1063539 co-relation queries the response was YES. Maximal size of possible extension queue 4804. Compared 1410245 event pairs, 16494 based on Foata normal form. 2060/168181 useless extension candidates. Maximal degree in co-relation 709212. Up to 27521 conditions per place. [2023-11-29 05:49:18,899 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 996 selfloop transitions, 347 changer transitions 0/1347 dead transitions. [2023-11-29 05:49:18,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 1347 transitions, 15485 flow [2023-11-29 05:49:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 05:49:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-29 05:49:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1141 transitions. [2023-11-29 05:49:18,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420412675018423 [2023-11-29 05:49:18,902 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1141 transitions. [2023-11-29 05:49:18,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1141 transitions. [2023-11-29 05:49:18,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:18,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1141 transitions. [2023-11-29 05:49:18,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 19.338983050847457) internal successors, (1141), 59 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:18,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 46.0) internal successors, (2760), 60 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:18,908 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 46.0) internal successors, (2760), 60 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:18,908 INFO L175 Difference]: Start difference. First operand has 181 places, 230 transitions, 2627 flow. Second operand 59 states and 1141 transitions. [2023-11-29 05:49:18,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 1347 transitions, 15485 flow [2023-11-29 05:49:34,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1347 transitions, 14456 flow, removed 403 selfloop flow, removed 13 redundant places. [2023-11-29 05:49:34,661 INFO L231 Difference]: Finished difference. Result has 245 places, 470 transitions, 6447 flow [2023-11-29 05:49:34,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=6447, PETRI_PLACES=245, PETRI_TRANSITIONS=470} [2023-11-29 05:49:34,662 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 200 predicate places. [2023-11-29 05:49:34,662 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 470 transitions, 6447 flow [2023-11-29 05:49:34,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:34,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:34,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:34,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:49:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-11-29 05:49:34,863 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:49:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1094830417, now seen corresponding path program 1 times [2023-11-29 05:49:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:49:34,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885294651] [2023-11-29 05:49:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:49:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:49:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:49:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885294651] [2023-11-29 05:49:38,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885294651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:49:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881671154] [2023-11-29 05:49:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:38,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:49:38,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:49:38,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:49:38,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b08b46-d293-42d9-b89a-3288afed88d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:49:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:38,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 05:49:38,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:40,388 INFO L349 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-11-29 05:49:40,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 13 [2023-11-29 05:49:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:49:41,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:50:12,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:50:12,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 118 treesize of output 293 [2023-11-29 05:50:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:50:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881671154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:50:14,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:50:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 21] total 68 [2023-11-29 05:50:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250084379] [2023-11-29 05:50:14,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:50:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-29 05:50:14,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:50:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-29 05:50:14,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4419, Unknown=7, NotChecked=0, Total=4692 [2023-11-29 05:50:19,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:19,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 46 [2023-11-29 05:50:19,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 470 transitions, 6447 flow. Second operand has 69 states, 69 states have (on average 7.898550724637682) internal successors, (545), 69 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:19,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:19,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 46 [2023-11-29 05:50:19,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:33,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:37,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:41,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:45,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:49,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:53,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:50:57,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:15,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:19,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:23,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:27,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:32,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:36,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:40,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:44,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:48,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:52,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:51:58,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:52:02,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:52:06,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:52:10,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:52:14,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:52:18,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:23,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:27,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:31,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:35,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:39,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:43,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:48,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:52:53,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:52:57,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:53:01,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:53:05,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:53:31,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:53:35,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:53:39,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:53:41,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:53:45,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:53:52,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:53:56,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:00,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:04,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:08,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:12,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:16,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:16,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:55:20,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:55:24,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:29,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:33,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:37,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:41,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:45,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:55:49,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:13,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:18,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:22,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:26,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:30,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:34,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:38,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:42,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:46,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:50,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:54,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:56:58,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:02,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:06,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:10,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:14,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:18,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:22,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:26,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:30,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:34,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:38,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:42,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:46,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:50,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:54,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:57:58,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:02,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:06,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:10,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:14,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:19,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:23,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:27,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:58:31,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 05:58:36,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:40,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:44,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:47,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:51,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:55,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:58:59,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:59:03,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]