./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i --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_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:27:08,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:27:08,505 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:27:08,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:27:08,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:27:08,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:27:08,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:27:08,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:27:08,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:27:08,561 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:27:08,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:27:08,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:27:08,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:27:08,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:27:08,565 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:27:08,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:27:08,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:27:08,566 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:27:08,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:27:08,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:27:08,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:27:08,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:27:08,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:27:08,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:27:08,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:27:08,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:27:08,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:27:08,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:27:08,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:27:08,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:27:08,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:27:08,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:08,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:27:08,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:27:08,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:27:08,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:27:08,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:27:08,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:27:08,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:27:08,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:27:08,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:27:08,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:27:08,577 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_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf [2023-11-24 21:27:08,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:27:08,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:27:08,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:27:08,887 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:27:08,887 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:27:08,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2023-11-24 21:27:11,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:27:12,341 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:27:12,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2023-11-24 21:27:12,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/data/f53dc652a/0a04fcd74cf44d47a9383329e0979454/FLAG8e9c3c226 [2023-11-24 21:27:12,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/data/f53dc652a/0a04fcd74cf44d47a9383329e0979454 [2023-11-24 21:27:12,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:27:12,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:27:12,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:12,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:27:12,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:27:12,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:12" (1/1) ... [2023-11-24 21:27:12,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5ff9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:12, skipping insertion in model container [2023-11-24 21:27:12,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:12" (1/1) ... [2023-11-24 21:27:12,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:12,644 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_8370f32a-e87b-41ca-9293-1638df228328/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i[995,1008] [2023-11-24 21:27:12,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:13,002 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:27:13,017 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_8370f32a-e87b-41ca-9293-1638df228328/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i[995,1008] [2023-11-24 21:27:13,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:13,195 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:27:13,195 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:27:13,203 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:27:13,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13 WrapperNode [2023-11-24 21:27:13,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:13,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:13,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:27:13,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:27:13,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,310 INFO L138 Inliner]: procedures = 177, calls = 87, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 187 [2023-11-24 21:27:13,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:13,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:27:13,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:27:13,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:27:13,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,344 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,381 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 1, 24, 1, 1, 1]. 80 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1, 0, 0, 0]. The 13 writes are split as follows [0, 1, 9, 1, 1, 1]. [2023-11-24 21:27:13,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:27:13,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:27:13,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:27:13,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:27:13,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (1/1) ... [2023-11-24 21:27:13,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:27:13,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:27:13,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8370f32a-e87b-41ca-9293-1638df228328/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:27:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:27:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:27:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:27:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:27:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:27:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 21:27:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:27:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:27:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:27:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:27:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:27:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 21:27:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:27:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:27:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:27:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:27:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:27:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:27:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:27:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:27:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:27:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:27:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 21:27:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 21:27:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:27:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:27:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:27:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:27:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:27:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:27:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:27:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:27:13,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:27:13,515 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:27:13,748 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:27:13,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:27:14,296 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:27:14,829 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:27:14,830 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:27:14,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:14 BoogieIcfgContainer [2023-11-24 21:27:14,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:27:14,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:27:14,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:27:14,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:27:14,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:27:12" (1/3) ... [2023-11-24 21:27:14,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce33249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:14, skipping insertion in model container [2023-11-24 21:27:14,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:13" (2/3) ... [2023-11-24 21:27:14,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce33249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:14, skipping insertion in model container [2023-11-24 21:27:14,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:14" (3/3) ... [2023-11-24 21:27:14,843 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.oepc.i [2023-11-24 21:27:14,854 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:27:14,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:27:14,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:27:14,866 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:27:14,960 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:27:15,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2023-11-24 21:27:15,053 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2023-11-24 21:27:15,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:27:15,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-24 21:27:15,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2023-11-24 21:27:15,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2023-11-24 21:27:15,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:27:15,090 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;@1fb9d306, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:27:15,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 21:27:15,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:27:15,119 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-24 21:27:15,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:27:15,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:15,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:15,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:15,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1549303885, now seen corresponding path program 1 times [2023-11-24 21:27:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070854030] [2023-11-24 21:27:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070854030] [2023-11-24 21:27:16,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070854030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:16,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:16,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:27:16,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019092098] [2023-11-24 21:27:16,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:16,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:27:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:27:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:27:16,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2023-11-24 21:27:16,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:16,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:16,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2023-11-24 21:27:16,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:17,990 INFO L124 PetriNetUnfolderBase]: 2645/4042 cut-off events. [2023-11-24 21:27:17,990 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-24 21:27:18,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7860 conditions, 4042 events. 2645/4042 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 27539 event pairs, 409 based on Foata normal form. 120/4144 useless extension candidates. Maximal degree in co-relation 7848. Up to 2617 conditions per place. [2023-11-24 21:27:18,035 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 33 selfloop transitions, 2 changer transitions 35/84 dead transitions. [2023-11-24 21:27:18,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 323 flow [2023-11-24 21:27:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:27:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:27:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2023-11-24 21:27:18,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-24 21:27:18,053 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 198 transitions. [2023-11-24 21:27:18,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 198 transitions. [2023-11-24 21:27:18,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:18,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 198 transitions. [2023-11-24 21:27:18,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:18,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:18,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:18,074 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 198 transitions. [2023-11-24 21:27:18,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 323 flow [2023-11-24 21:27:18,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 318 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:27:18,087 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2023-11-24 21:27:18,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2023-11-24 21:27:18,093 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-24 21:27:18,094 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2023-11-24 21:27:18,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:18,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:18,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:18,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:27:18,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:18,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash -355384914, now seen corresponding path program 1 times [2023-11-24 21:27:18,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:18,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814624842] [2023-11-24 21:27:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:18,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814624842] [2023-11-24 21:27:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814624842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:18,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:18,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:27:18,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785691232] [2023-11-24 21:27:18,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:27:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:18,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:27:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:27:18,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:18,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:18,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:18,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:18,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:21,997 INFO L124 PetriNetUnfolderBase]: 8047/13245 cut-off events. [2023-11-24 21:27:21,998 INFO L125 PetriNetUnfolderBase]: For 2240/2240 co-relation queries the response was YES. [2023-11-24 21:27:22,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27144 conditions, 13245 events. 8047/13245 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 104177 event pairs, 1135 based on Foata normal form. 352/13491 useless extension candidates. Maximal degree in co-relation 27129. Up to 4225 conditions per place. [2023-11-24 21:27:22,130 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 58 selfloop transitions, 6 changer transitions 66/142 dead transitions. [2023-11-24 21:27:22,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 142 transitions, 608 flow [2023-11-24 21:27:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:27:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:27:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2023-11-24 21:27:22,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511111111111111 [2023-11-24 21:27:22,144 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 293 transitions. [2023-11-24 21:27:22,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 293 transitions. [2023-11-24 21:27:22,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:22,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 293 transitions. [2023-11-24 21:27:22,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 29.3) internal successors, (293), 10 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:22,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 45.0) internal successors, (495), 11 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:22,152 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 45.0) internal successors, (495), 11 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:22,154 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 10 states and 293 transitions. [2023-11-24 21:27:22,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 142 transitions, 608 flow [2023-11-24 21:27:22,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 142 transitions, 572 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-24 21:27:22,436 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 133 flow [2023-11-24 21:27:22,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=133, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2023-11-24 21:27:22,437 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-11-24 21:27:22,437 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 133 flow [2023-11-24 21:27:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:22,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:22,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:22,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:27:22,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:22,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1459294639, now seen corresponding path program 1 times [2023-11-24 21:27:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:22,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789550021] [2023-11-24 21:27:22,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:22,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789550021] [2023-11-24 21:27:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789550021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:27:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899207436] [2023-11-24 21:27:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:27:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:27:22,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:27:22,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:22,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:22,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:22,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:22,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:26,182 INFO L124 PetriNetUnfolderBase]: 9223/15175 cut-off events. [2023-11-24 21:27:26,182 INFO L125 PetriNetUnfolderBase]: For 5960/5965 co-relation queries the response was YES. [2023-11-24 21:27:26,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33374 conditions, 15175 events. 9223/15175 cut-off events. For 5960/5965 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 123023 event pairs, 1463 based on Foata normal form. 196/15143 useless extension candidates. Maximal degree in co-relation 33355. Up to 6657 conditions per place. [2023-11-24 21:27:26,321 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 49 selfloop transitions, 5 changer transitions 30/96 dead transitions. [2023-11-24 21:27:26,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 446 flow [2023-11-24 21:27:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:27:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:27:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2023-11-24 21:27:26,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:27:26,324 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 180 transitions. [2023-11-24 21:27:26,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 180 transitions. [2023-11-24 21:27:26,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:26,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 180 transitions. [2023-11-24 21:27:26,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:26,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:26,328 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:26,328 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 133 flow. Second operand 6 states and 180 transitions. [2023-11-24 21:27:26,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 446 flow [2023-11-24 21:27:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 96 transitions, 428 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-24 21:27:26,444 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 151 flow [2023-11-24 21:27:26,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2023-11-24 21:27:26,445 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-11-24 21:27:26,445 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 151 flow [2023-11-24 21:27:26,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:26,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:26,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:27:26,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2045143245, now seen corresponding path program 2 times [2023-11-24 21:27:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917842328] [2023-11-24 21:27:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917842328] [2023-11-24 21:27:27,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917842328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:27,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:27,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:27:27,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200719053] [2023-11-24 21:27:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:27:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:27:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:27:27,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-24 21:27:27,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:27,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:27,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-24 21:27:27,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:29,986 INFO L124 PetriNetUnfolderBase]: 5599/8895 cut-off events. [2023-11-24 21:27:29,987 INFO L125 PetriNetUnfolderBase]: For 3531/3587 co-relation queries the response was YES. [2023-11-24 21:27:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19378 conditions, 8895 events. 5599/8895 cut-off events. For 3531/3587 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 64250 event pairs, 1467 based on Foata normal form. 217/9027 useless extension candidates. Maximal degree in co-relation 19359. Up to 6357 conditions per place. [2023-11-24 21:27:30,056 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 45 selfloop transitions, 8 changer transitions 46/113 dead transitions. [2023-11-24 21:27:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 549 flow [2023-11-24 21:27:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:27:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:27:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2023-11-24 21:27:30,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2023-11-24 21:27:30,059 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 267 transitions. [2023-11-24 21:27:30,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 267 transitions. [2023-11-24 21:27:30,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:30,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 267 transitions. [2023-11-24 21:27:30,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 45.0) internal successors, (495), 11 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,064 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 45.0) internal successors, (495), 11 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,064 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 151 flow. Second operand 10 states and 267 transitions. [2023-11-24 21:27:30,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 549 flow [2023-11-24 21:27:30,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 526 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-24 21:27:30,104 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 223 flow [2023-11-24 21:27:30,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-11-24 21:27:30,107 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2023-11-24 21:27:30,109 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 223 flow [2023-11-24 21:27:30,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:30,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:30,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:27:30,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:30,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1828101902, now seen corresponding path program 1 times [2023-11-24 21:27:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476375343] [2023-11-24 21:27:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476375343] [2023-11-24 21:27:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476375343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:27:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329212664] [2023-11-24 21:27:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:30,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:27:30,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:27:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:27:30,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-24 21:27:30,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:30,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-24 21:27:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:33,245 INFO L124 PetriNetUnfolderBase]: 5707/9137 cut-off events. [2023-11-24 21:27:33,246 INFO L125 PetriNetUnfolderBase]: For 11351/11399 co-relation queries the response was YES. [2023-11-24 21:27:33,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23206 conditions, 9137 events. 5707/9137 cut-off events. For 11351/11399 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 67237 event pairs, 1841 based on Foata normal form. 189/9238 useless extension candidates. Maximal degree in co-relation 23181. Up to 3520 conditions per place. [2023-11-24 21:27:33,321 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 53 selfloop transitions, 15 changer transitions 52/134 dead transitions. [2023-11-24 21:27:33,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 752 flow [2023-11-24 21:27:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:27:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:27:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2023-11-24 21:27:33,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080808080808081 [2023-11-24 21:27:33,324 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 301 transitions. [2023-11-24 21:27:33,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 301 transitions. [2023-11-24 21:27:33,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:33,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 301 transitions. [2023-11-24 21:27:33,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.363636363636363) internal successors, (301), 11 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:33,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:33,328 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:33,328 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 223 flow. Second operand 11 states and 301 transitions. [2023-11-24 21:27:33,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 752 flow [2023-11-24 21:27:33,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 134 transitions, 716 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-24 21:27:33,377 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 326 flow [2023-11-24 21:27:33,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=326, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2023-11-24 21:27:33,378 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2023-11-24 21:27:33,379 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 326 flow [2023-11-24 21:27:33,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:33,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:33,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:33,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:27:33,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:33,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:33,380 INFO L85 PathProgramCache]: Analyzing trace with hash -182545458, now seen corresponding path program 2 times [2023-11-24 21:27:33,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:33,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359261545] [2023-11-24 21:27:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:33,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:34,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:34,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359261545] [2023-11-24 21:27:34,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359261545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:27:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320213108] [2023-11-24 21:27:34,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:27:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:27:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:27:34,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-24 21:27:34,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:34,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:34,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-24 21:27:34,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:37,454 INFO L124 PetriNetUnfolderBase]: 7028/11184 cut-off events. [2023-11-24 21:27:37,455 INFO L125 PetriNetUnfolderBase]: For 30602/30650 co-relation queries the response was YES. [2023-11-24 21:27:37,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37558 conditions, 11184 events. 7028/11184 cut-off events. For 30602/30650 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 84622 event pairs, 1475 based on Foata normal form. 237/11327 useless extension candidates. Maximal degree in co-relation 37527. Up to 3008 conditions per place. [2023-11-24 21:27:37,544 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 69 selfloop transitions, 20 changer transitions 52/155 dead transitions. [2023-11-24 21:27:37,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 155 transitions, 1136 flow [2023-11-24 21:27:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:27:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:27:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 334 transitions. [2023-11-24 21:27:37,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6185185185185185 [2023-11-24 21:27:37,547 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 334 transitions. [2023-11-24 21:27:37,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 334 transitions. [2023-11-24 21:27:37,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:37,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 334 transitions. [2023-11-24 21:27:37,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:37,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 45.0) internal successors, (585), 13 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:37,551 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 45.0) internal successors, (585), 13 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:37,551 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 326 flow. Second operand 12 states and 334 transitions. [2023-11-24 21:27:37,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 155 transitions, 1136 flow [2023-11-24 21:27:37,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 155 transitions, 1053 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-11-24 21:27:37,674 INFO L231 Difference]: Finished difference. Result has 87 places, 63 transitions, 437 flow [2023-11-24 21:27:37,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=437, PETRI_PLACES=87, PETRI_TRANSITIONS=63} [2023-11-24 21:27:37,677 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2023-11-24 21:27:37,678 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 63 transitions, 437 flow [2023-11-24 21:27:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:37,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:37,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:37,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:27:37,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:37,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1433573328, now seen corresponding path program 1 times [2023-11-24 21:27:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333551393] [2023-11-24 21:27:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333551393] [2023-11-24 21:27:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333551393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:38,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:38,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:27:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497426546] [2023-11-24 21:27:38,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:38,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:27:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:27:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:27:38,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2023-11-24 21:27:38,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 63 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:38,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:38,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2023-11-24 21:27:38,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:40,272 INFO L124 PetriNetUnfolderBase]: 5647/9371 cut-off events. [2023-11-24 21:27:40,272 INFO L125 PetriNetUnfolderBase]: For 31538/31624 co-relation queries the response was YES. [2023-11-24 21:27:40,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33077 conditions, 9371 events. 5647/9371 cut-off events. For 31538/31624 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 72696 event pairs, 1933 based on Foata normal form. 176/9400 useless extension candidates. Maximal degree in co-relation 33043. Up to 6113 conditions per place. [2023-11-24 21:27:40,349 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 55 selfloop transitions, 3 changer transitions 50/133 dead transitions. [2023-11-24 21:27:40,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 1104 flow [2023-11-24 21:27:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:27:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:27:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2023-11-24 21:27:40,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2023-11-24 21:27:40,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 205 transitions. [2023-11-24 21:27:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 205 transitions. [2023-11-24 21:27:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:40,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 205 transitions. [2023-11-24 21:27:40,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:40,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:40,354 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:40,354 INFO L175 Difference]: Start difference. First operand has 87 places, 63 transitions, 437 flow. Second operand 7 states and 205 transitions. [2023-11-24 21:27:40,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 1104 flow [2023-11-24 21:27:40,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 133 transitions, 1058 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-11-24 21:27:40,541 INFO L231 Difference]: Finished difference. Result has 84 places, 62 transitions, 416 flow [2023-11-24 21:27:40,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2023-11-24 21:27:40,543 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 33 predicate places. [2023-11-24 21:27:40,543 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 416 flow [2023-11-24 21:27:40,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:40,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:40,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:40,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:27:40,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:40,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1179439611, now seen corresponding path program 1 times [2023-11-24 21:27:40,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:40,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265538642] [2023-11-24 21:27:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:40,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265538642] [2023-11-24 21:27:40,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265538642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:40,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:40,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:27:40,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023904270] [2023-11-24 21:27:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:27:40,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:27:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:27:40,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:40,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 416 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:40,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:40,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:40,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:43,026 INFO L124 PetriNetUnfolderBase]: 7390/12072 cut-off events. [2023-11-24 21:27:43,026 INFO L125 PetriNetUnfolderBase]: For 28553/28562 co-relation queries the response was YES. [2023-11-24 21:27:43,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40156 conditions, 12072 events. 7390/12072 cut-off events. For 28553/28562 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 96052 event pairs, 2768 based on Foata normal form. 111/12123 useless extension candidates. Maximal degree in co-relation 40123. Up to 5044 conditions per place. [2023-11-24 21:27:43,130 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 56 selfloop transitions, 6 changer transitions 62/136 dead transitions. [2023-11-24 21:27:43,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 136 transitions, 1088 flow [2023-11-24 21:27:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:27:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:27:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2023-11-24 21:27:43,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2023-11-24 21:27:43,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 205 transitions. [2023-11-24 21:27:43,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 205 transitions. [2023-11-24 21:27:43,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:43,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 205 transitions. [2023-11-24 21:27:43,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:43,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:43,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:43,136 INFO L175 Difference]: Start difference. First operand has 84 places, 62 transitions, 416 flow. Second operand 7 states and 205 transitions. [2023-11-24 21:27:43,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 136 transitions, 1088 flow [2023-11-24 21:27:43,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 1062 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-24 21:27:43,314 INFO L231 Difference]: Finished difference. Result has 83 places, 56 transitions, 359 flow [2023-11-24 21:27:43,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=83, PETRI_TRANSITIONS=56} [2023-11-24 21:27:43,318 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 32 predicate places. [2023-11-24 21:27:43,318 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 56 transitions, 359 flow [2023-11-24 21:27:43,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:43,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:43,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:43,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:27:43,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:43,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 49931665, now seen corresponding path program 1 times [2023-11-24 21:27:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:43,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182382297] [2023-11-24 21:27:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:43,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:43,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:43,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182382297] [2023-11-24 21:27:43,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182382297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:43,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:43,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:27:43,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452197832] [2023-11-24 21:27:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:43,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:43,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:43,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:43,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 56 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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) [2023-11-24 21:27:43,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:43,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:43,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:47,041 INFO L124 PetriNetUnfolderBase]: 17160/25206 cut-off events. [2023-11-24 21:27:47,042 INFO L125 PetriNetUnfolderBase]: For 45734/45982 co-relation queries the response was YES. [2023-11-24 21:27:47,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74955 conditions, 25206 events. 17160/25206 cut-off events. For 45734/45982 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 173192 event pairs, 3076 based on Foata normal form. 1015/26112 useless extension candidates. Maximal degree in co-relation 74924. Up to 14080 conditions per place. [2023-11-24 21:27:47,222 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 77 selfloop transitions, 6 changer transitions 6/106 dead transitions. [2023-11-24 21:27:47,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 831 flow [2023-11-24 21:27:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2023-11-24 21:27:47,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2023-11-24 21:27:47,224 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 123 transitions. [2023-11-24 21:27:47,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 123 transitions. [2023-11-24 21:27:47,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:47,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 123 transitions. [2023-11-24 21:27:47,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,226 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,226 INFO L175 Difference]: Start difference. First operand has 83 places, 56 transitions, 359 flow. Second operand 4 states and 123 transitions. [2023-11-24 21:27:47,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 831 flow [2023-11-24 21:27:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 799 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-24 21:27:47,379 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 373 flow [2023-11-24 21:27:47,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=373, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-11-24 21:27:47,380 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2023-11-24 21:27:47,380 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 373 flow [2023-11-24 21:27:47,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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) [2023-11-24 21:27:47,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:47,381 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] [2023-11-24 21:27:47,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:27:47,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:47,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1976763696, now seen corresponding path program 1 times [2023-11-24 21:27:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897138160] [2023-11-24 21:27:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:47,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:47,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:47,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897138160] [2023-11-24 21:27:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897138160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:47,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:47,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:27:47,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209552800] [2023-11-24 21:27:47,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:47,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:27:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:27:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:27:47,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:47,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:47,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:47,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:51,084 INFO L124 PetriNetUnfolderBase]: 15279/22639 cut-off events. [2023-11-24 21:27:51,084 INFO L125 PetriNetUnfolderBase]: For 40473/40783 co-relation queries the response was YES. [2023-11-24 21:27:51,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72944 conditions, 22639 events. 15279/22639 cut-off events. For 40473/40783 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 154716 event pairs, 1367 based on Foata normal form. 987/23525 useless extension candidates. Maximal degree in co-relation 72916. Up to 9465 conditions per place. [2023-11-24 21:27:51,239 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 90 selfloop transitions, 10 changer transitions 14/131 dead transitions. [2023-11-24 21:27:51,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 131 transitions, 1032 flow [2023-11-24 21:27:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:27:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:27:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2023-11-24 21:27:51,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7022222222222222 [2023-11-24 21:27:51,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 158 transitions. [2023-11-24 21:27:51,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 158 transitions. [2023-11-24 21:27:51,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:51,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 158 transitions. [2023-11-24 21:27:51,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:51,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:51,244 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:51,245 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 373 flow. Second operand 5 states and 158 transitions. [2023-11-24 21:27:51,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 131 transitions, 1032 flow [2023-11-24 21:27:51,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:51,294 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 430 flow [2023-11-24 21:27:51,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-11-24 21:27:51,295 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2023-11-24 21:27:51,295 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 430 flow [2023-11-24 21:27:51,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:51,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:51,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:51,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:27:51,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:51,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1509296081, now seen corresponding path program 1 times [2023-11-24 21:27:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:51,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204664851] [2023-11-24 21:27:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:51,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204664851] [2023-11-24 21:27:51,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204664851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:51,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:51,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:27:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782899545] [2023-11-24 21:27:51,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:51,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:27:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:51,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:27:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:27:51,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:51,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:51,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:51,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:54,743 INFO L124 PetriNetUnfolderBase]: 12207/18083 cut-off events. [2023-11-24 21:27:54,743 INFO L125 PetriNetUnfolderBase]: For 44573/44959 co-relation queries the response was YES. [2023-11-24 21:27:54,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64646 conditions, 18083 events. 12207/18083 cut-off events. For 44573/44959 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 120029 event pairs, 677 based on Foata normal form. 763/18753 useless extension candidates. Maximal degree in co-relation 64615. Up to 5760 conditions per place. [2023-11-24 21:27:54,857 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 96 selfloop transitions, 14 changer transitions 16/143 dead transitions. [2023-11-24 21:27:54,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 143 transitions, 1155 flow [2023-11-24 21:27:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:27:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:27:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2023-11-24 21:27:54,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074074074074074 [2023-11-24 21:27:54,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2023-11-24 21:27:54,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2023-11-24 21:27:54,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:54,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2023-11-24 21:27:54,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,862 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 430 flow. Second operand 6 states and 191 transitions. [2023-11-24 21:27:54,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 143 transitions, 1155 flow [2023-11-24 21:27:54,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 143 transitions, 1139 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:54,903 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 474 flow [2023-11-24 21:27:54,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2023-11-24 21:27:54,904 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2023-11-24 21:27:54,904 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 474 flow [2023-11-24 21:27:54,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:54,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:54,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:27:54,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-24 21:27:54,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1670319646, now seen corresponding path program 1 times [2023-11-24 21:27:54,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:54,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273107024] [2023-11-24 21:27:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:54,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:55,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273107024] [2023-11-24 21:27:55,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273107024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:55,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:55,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:27:55,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117104214] [2023-11-24 21:27:55,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:55,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:27:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:27:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:27:55,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-24 21:27:55,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 474 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:55,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:55,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-24 21:27:55,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:57,637 INFO L124 PetriNetUnfolderBase]: 9899/14694 cut-off events. [2023-11-24 21:27:57,637 INFO L125 PetriNetUnfolderBase]: For 51334/51651 co-relation queries the response was YES. [2023-11-24 21:27:57,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57567 conditions, 14694 events. 9899/14694 cut-off events. For 51334/51651 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 97235 event pairs, 706 based on Foata normal form. 374/14973 useless extension candidates. Maximal degree in co-relation 57534. Up to 5300 conditions per place. [2023-11-24 21:27:57,725 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 70 selfloop transitions, 18 changer transitions 30/130 dead transitions. [2023-11-24 21:27:57,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 1040 flow [2023-11-24 21:27:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:27:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:27:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2023-11-24 21:27:57,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2023-11-24 21:27:57,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 204 transitions. [2023-11-24 21:27:57,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 204 transitions. [2023-11-24 21:27:57,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:57,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 204 transitions. [2023-11-24 21:27:57,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,730 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 474 flow. Second operand 7 states and 204 transitions. [2023-11-24 21:27:57,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 1040 flow [2023-11-24 21:27:57,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 130 transitions, 943 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-11-24 21:27:57,854 INFO L231 Difference]: Finished difference. Result has 86 places, 53 transitions, 351 flow [2023-11-24 21:27:57,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=86, PETRI_TRANSITIONS=53} [2023-11-24 21:27:57,855 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2023-11-24 21:27:57,855 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 53 transitions, 351 flow [2023-11-24 21:27:57,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:57,856 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] [2023-11-24 21:27:57,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:27:57,856 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 2 more)] === [2023-11-24 21:27:57,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:57,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1381482354, now seen corresponding path program 1 times [2023-11-24 21:27:57,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:57,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897203362] [2023-11-24 21:27:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:57,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:27:57,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:27:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:27:58,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:27:58,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:27:58,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-24 21:27:58,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-24 21:27:58,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-24 21:27:58,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-24 21:27:58,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-24 21:27:58,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:27:58,134 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:58,140 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:27:58,141 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:27:58,226 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre25 could not be translated [2023-11-24 21:27:58,234 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre27 could not be translated [2023-11-24 21:27:58,237 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre29 could not be translated [2023-11-24 21:27:58,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre31 could not be translated [2023-11-24 21:27:58,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:27:58 BasicIcfg [2023-11-24 21:27:58,276 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:27:58,277 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:27:58,277 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:27:58,277 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:27:58,278 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:14" (3/4) ... [2023-11-24 21:27:58,279 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 21:27:58,330 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre25 could not be translated [2023-11-24 21:27:58,332 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre27 could not be translated [2023-11-24 21:27:58,334 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre29 could not be translated [2023-11-24 21:27:58,336 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre31 could not be translated