./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.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_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:10:06,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:10:06,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:10:06,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:10:06,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:10:06,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:10:06,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:10:06,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:10:06,503 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:10:06,503 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:10:06,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:10:06,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:10:06,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:10:06,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:10:06,506 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:10:06,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:10:06,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:10:06,507 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:10:06,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:10:06,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:10:06,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:10:06,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:10:06,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:10:06,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:10:06,510 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:10:06,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:10:06,511 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:10:06,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:10:06,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:10:06,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:10:06,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:10:06,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:06,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:10:06,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:10:06,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:10:06,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:10:06,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:10:06,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:10:06,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:10:06,516 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:10:06,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:10:06,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:10:06,517 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_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2023-11-29 04:10:06,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:10:06,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:10:06,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:10:06,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:10:06,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:10:06,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2023-11-29 04:10:09,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:10:09,744 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:10:09,745 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2023-11-29 04:10:09,762 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/data/f35205b87/cc92743f659e4deb8c42f76eb99f75ef/FLAGf0f450271 [2023-11-29 04:10:09,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/data/f35205b87/cc92743f659e4deb8c42f76eb99f75ef [2023-11-29 04:10:09,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:10:09,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:10:09,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:09,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:10:09,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:10:09,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:09" (1/1) ... [2023-11-29 04:10:09,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b629345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:09, skipping insertion in model container [2023-11-29 04:10:09,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:09" (1/1) ... [2023-11-29 04:10:09,838 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:10:09,976 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_dfed109c-8778-4ab0-adcb-9fceddbc72f4/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2023-11-29 04:10:10,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:10,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:10:10,190 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_dfed109c-8778-4ab0-adcb-9fceddbc72f4/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2023-11-29 04:10:10,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:10,265 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:10:10,265 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:10:10,271 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:10:10,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10 WrapperNode [2023-11-29 04:10:10,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:10,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:10,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:10:10,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:10:10,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,326 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 169 [2023-11-29 04:10:10,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:10,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:10:10,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:10:10,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:10:10,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,361 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 04:10:10,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:10:10,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:10:10,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:10:10,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:10:10,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (1/1) ... [2023-11-29 04:10:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:10,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:10,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:10:10,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:10:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:10:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:10:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:10:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:10:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:10:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:10:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:10:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 04:10:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 04:10:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 04:10:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 04:10:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:10:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:10:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:10:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:10:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:10:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:10:10,450 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:10:10,629 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:10:10,631 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:10:10,944 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:10:11,149 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:10:11,149 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:10:11,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:11 BoogieIcfgContainer [2023-11-29 04:10:11,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:10:11,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:10:11,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:10:11,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:10:11,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:10:09" (1/3) ... [2023-11-29 04:10:11,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bc645e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:11, skipping insertion in model container [2023-11-29 04:10:11,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:10" (2/3) ... [2023-11-29 04:10:11,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bc645e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:11, skipping insertion in model container [2023-11-29 04:10:11,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:11" (3/3) ... [2023-11-29 04:10:11,159 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-11-29 04:10:11,168 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:10:11,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:10:11,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:10:11,180 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:10:11,231 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:10:11,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 72 flow [2023-11-29 04:10:11,293 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-11-29 04:10:11,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:10:11,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 04:10:11,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 32 transitions, 72 flow [2023-11-29 04:10:11,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 30 transitions, 66 flow [2023-11-29 04:10:11,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:10:11,317 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;@513a0543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:10:11,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 04:10:11,324 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:10:11,324 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 04:10:11,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:10:11,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:11,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:11,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:11,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -135624375, now seen corresponding path program 1 times [2023-11-29 04:10:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325419604] [2023-11-29 04:10:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325419604] [2023-11-29 04:10:11,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325419604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:11,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:11,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:10:11,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292833240] [2023-11-29 04:10:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:11,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:11,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2023-11-29 04:10:11,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:11,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2023-11-29 04:10:11,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:11,945 INFO L124 PetriNetUnfolderBase]: 176/352 cut-off events. [2023-11-29 04:10:11,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:10:11,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 352 events. 176/352 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1780 event pairs, 16 based on Foata normal form. 18/360 useless extension candidates. Maximal degree in co-relation 663. Up to 266 conditions per place. [2023-11-29 04:10:11,953 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 21 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2023-11-29 04:10:11,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 128 flow [2023-11-29 04:10:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-29 04:10:11,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2023-11-29 04:10:11,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-29 04:10:11,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-29 04:10:11,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:11,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-29 04:10:11,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,975 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 66 flow. Second operand 3 states and 67 transitions. [2023-11-29 04:10:11,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 128 flow [2023-11-29 04:10:11,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:11,979 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 62 flow [2023-11-29 04:10:11,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-29 04:10:11,984 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-29 04:10:11,984 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 62 flow [2023-11-29 04:10:11,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:11,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:10:11,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1363320125, now seen corresponding path program 1 times [2023-11-29 04:10:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985883673] [2023-11-29 04:10:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:12,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:12,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985883673] [2023-11-29 04:10:12,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985883673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:12,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640304584] [2023-11-29 04:10:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:12,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:12,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 04:10:12,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:12,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 04:10:12,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:12,571 INFO L124 PetriNetUnfolderBase]: 232/462 cut-off events. [2023-11-29 04:10:12,572 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-29 04:10:12,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 462 events. 232/462 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2558 event pairs, 54 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 898. Up to 204 conditions per place. [2023-11-29 04:10:12,576 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 20 selfloop transitions, 2 changer transitions 29/60 dead transitions. [2023-11-29 04:10:12,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 234 flow [2023-11-29 04:10:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:10:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:10:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2023-11-29 04:10:12,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55078125 [2023-11-29 04:10:12,579 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 141 transitions. [2023-11-29 04:10:12,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 141 transitions. [2023-11-29 04:10:12,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:12,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 141 transitions. [2023-11-29 04:10:12,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,584 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,584 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 62 flow. Second operand 8 states and 141 transitions. [2023-11-29 04:10:12,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 234 flow [2023-11-29 04:10:12,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:12,587 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 72 flow [2023-11-29 04:10:12,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=72, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2023-11-29 04:10:12,588 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-11-29 04:10:12,588 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 72 flow [2023-11-29 04:10:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:12,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:12,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:10:12,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:12,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash -670296365, now seen corresponding path program 1 times [2023-11-29 04:10:12,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:12,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910996520] [2023-11-29 04:10:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:12,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:12,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910996520] [2023-11-29 04:10:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910996520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:12,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:12,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:12,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066145601] [2023-11-29 04:10:12,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:12,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:12,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 04:10:12,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:12,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 04:10:12,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:13,140 INFO L124 PetriNetUnfolderBase]: 156/329 cut-off events. [2023-11-29 04:10:13,140 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-29 04:10:13,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 329 events. 156/329 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1675 event pairs, 62 based on Foata normal form. 12/334 useless extension candidates. Maximal degree in co-relation 713. Up to 151 conditions per place. [2023-11-29 04:10:13,144 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 2 changer transitions 17/48 dead transitions. [2023-11-29 04:10:13,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 204 flow [2023-11-29 04:10:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:10:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2023-11-29 04:10:13,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2023-11-29 04:10:13,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 118 transitions. [2023-11-29 04:10:13,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 118 transitions. [2023-11-29 04:10:13,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:13,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 118 transitions. [2023-11-29 04:10:13,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,151 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 72 flow. Second operand 7 states and 118 transitions. [2023-11-29 04:10:13,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 204 flow [2023-11-29 04:10:13,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 184 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 04:10:13,155 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 76 flow [2023-11-29 04:10:13,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-11-29 04:10:13,157 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-29 04:10:13,157 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 76 flow [2023-11-29 04:10:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:13,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:13,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:10:13,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:13,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash -989793264, now seen corresponding path program 1 times [2023-11-29 04:10:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072780541] [2023-11-29 04:10:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072780541] [2023-11-29 04:10:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072780541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:10:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389359304] [2023-11-29 04:10:14,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:14,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:10:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:10:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:10:14,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:14,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 76 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:14,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:14,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:15,097 INFO L124 PetriNetUnfolderBase]: 212/431 cut-off events. [2023-11-29 04:10:15,098 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-29 04:10:15,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 431 events. 212/431 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2006 event pairs, 76 based on Foata normal form. 12/441 useless extension candidates. Maximal degree in co-relation 964. Up to 298 conditions per place. [2023-11-29 04:10:15,102 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 32 selfloop transitions, 12 changer transitions 17/69 dead transitions. [2023-11-29 04:10:15,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 304 flow [2023-11-29 04:10:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:10:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2023-11-29 04:10:15,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509375 [2023-11-29 04:10:15,105 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 163 transitions. [2023-11-29 04:10:15,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 163 transitions. [2023-11-29 04:10:15,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:15,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 163 transitions. [2023-11-29 04:10:15,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,108 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,108 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 76 flow. Second operand 10 states and 163 transitions. [2023-11-29 04:10:15,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 304 flow [2023-11-29 04:10:15,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 275 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-29 04:10:15,113 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 150 flow [2023-11-29 04:10:15,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-11-29 04:10:15,114 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-29 04:10:15,114 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 150 flow [2023-11-29 04:10:15,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:15,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:10:15,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:15,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1790450166, now seen corresponding path program 2 times [2023-11-29 04:10:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019413231] [2023-11-29 04:10:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:15,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019413231] [2023-11-29 04:10:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019413231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:15,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:15,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:10:15,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576089263] [2023-11-29 04:10:15,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:15,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:10:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:15,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:10:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:10:15,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:15,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 150 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:15,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:16,141 INFO L124 PetriNetUnfolderBase]: 206/415 cut-off events. [2023-11-29 04:10:16,142 INFO L125 PetriNetUnfolderBase]: For 341/344 co-relation queries the response was YES. [2023-11-29 04:10:16,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 415 events. 206/415 cut-off events. For 341/344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1955 event pairs, 72 based on Foata normal form. 14/427 useless extension candidates. Maximal degree in co-relation 1194. Up to 300 conditions per place. [2023-11-29 04:10:16,146 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 35 selfloop transitions, 19 changer transitions 12/74 dead transitions. [2023-11-29 04:10:16,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 432 flow [2023-11-29 04:10:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:10:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:10:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2023-11-29 04:10:16,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51953125 [2023-11-29 04:10:16,148 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 133 transitions. [2023-11-29 04:10:16,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 133 transitions. [2023-11-29 04:10:16,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:16,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 133 transitions. [2023-11-29 04:10:16,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:16,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:16,151 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:16,151 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 150 flow. Second operand 8 states and 133 transitions. [2023-11-29 04:10:16,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 432 flow [2023-11-29 04:10:16,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 426 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:16,156 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 310 flow [2023-11-29 04:10:16,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-29 04:10:16,158 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-11-29 04:10:16,158 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 310 flow [2023-11-29 04:10:16,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:16,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:16,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:10:16,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:16,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash 429082748, now seen corresponding path program 1 times [2023-11-29 04:10:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:16,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69889857] [2023-11-29 04:10:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:16,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69889857] [2023-11-29 04:10:17,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69889857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:10:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157288446] [2023-11-29 04:10:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:17,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:10:17,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:10:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:10:17,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2023-11-29 04:10:17,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 310 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:17,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:17,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2023-11-29 04:10:17,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:17,534 INFO L124 PetriNetUnfolderBase]: 330/605 cut-off events. [2023-11-29 04:10:17,534 INFO L125 PetriNetUnfolderBase]: For 780/786 co-relation queries the response was YES. [2023-11-29 04:10:17,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 605 events. 330/605 cut-off events. For 780/786 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2651 event pairs, 141 based on Foata normal form. 19/622 useless extension candidates. Maximal degree in co-relation 1920. Up to 466 conditions per place. [2023-11-29 04:10:17,540 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 48 selfloop transitions, 10 changer transitions 19/83 dead transitions. [2023-11-29 04:10:17,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 572 flow [2023-11-29 04:10:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:10:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:10:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2023-11-29 04:10:17,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2023-11-29 04:10:17,542 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 121 transitions. [2023-11-29 04:10:17,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 121 transitions. [2023-11-29 04:10:17,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:17,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 121 transitions. [2023-11-29 04:10:17,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:17,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:17,545 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 32.0) internal successors, (288), 9 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:17,545 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 310 flow. Second operand 8 states and 121 transitions. [2023-11-29 04:10:17,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 572 flow [2023-11-29 04:10:17,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 540 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-29 04:10:17,552 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 333 flow [2023-11-29 04:10:17,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-11-29 04:10:17,553 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-11-29 04:10:17,554 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 333 flow [2023-11-29 04:10:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:17,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:17,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:10:17,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:17,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash -294416320, now seen corresponding path program 2 times [2023-11-29 04:10:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:17,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747791434] [2023-11-29 04:10:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747791434] [2023-11-29 04:10:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747791434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:18,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:18,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:10:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063547098] [2023-11-29 04:10:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:10:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:10:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:10:18,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2023-11-29 04:10:18,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 333 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:18,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:18,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2023-11-29 04:10:18,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:18,702 INFO L124 PetriNetUnfolderBase]: 477/868 cut-off events. [2023-11-29 04:10:18,703 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2023-11-29 04:10:18,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2841 conditions, 868 events. 477/868 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4227 event pairs, 81 based on Foata normal form. 27/890 useless extension candidates. Maximal degree in co-relation 2812. Up to 422 conditions per place. [2023-11-29 04:10:18,709 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 52 selfloop transitions, 30 changer transitions 29/117 dead transitions. [2023-11-29 04:10:18,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 117 transitions, 795 flow [2023-11-29 04:10:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:10:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:10:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2023-11-29 04:10:18,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2023-11-29 04:10:18,711 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 186 transitions. [2023-11-29 04:10:18,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 186 transitions. [2023-11-29 04:10:18,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:18,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 186 transitions. [2023-11-29 04:10:18,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:18,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:18,714 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:18,714 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 333 flow. Second operand 12 states and 186 transitions. [2023-11-29 04:10:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 117 transitions, 795 flow [2023-11-29 04:10:18,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 117 transitions, 767 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 04:10:18,722 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 516 flow [2023-11-29 04:10:18,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=516, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-11-29 04:10:18,723 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2023-11-29 04:10:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 516 flow [2023-11-29 04:10:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:18,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:18,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:10:18,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:18,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash 81504617, now seen corresponding path program 1 times [2023-11-29 04:10:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546521110] [2023-11-29 04:10:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:18,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:18,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546521110] [2023-11-29 04:10:18,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546521110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:18,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:18,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040912979] [2023-11-29 04:10:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:10:18,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:10:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:10:18,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:18,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 516 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:18,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:18,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:18,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:19,012 INFO L124 PetriNetUnfolderBase]: 279/559 cut-off events. [2023-11-29 04:10:19,012 INFO L125 PetriNetUnfolderBase]: For 1500/1507 co-relation queries the response was YES. [2023-11-29 04:10:19,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 559 events. 279/559 cut-off events. For 1500/1507 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2572 event pairs, 65 based on Foata normal form. 49/602 useless extension candidates. Maximal degree in co-relation 2069. Up to 238 conditions per place. [2023-11-29 04:10:19,017 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 54 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-11-29 04:10:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 604 flow [2023-11-29 04:10:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:10:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2023-11-29 04:10:19,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2023-11-29 04:10:19,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 81 transitions. [2023-11-29 04:10:19,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 81 transitions. [2023-11-29 04:10:19,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:19,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 81 transitions. [2023-11-29 04:10:19,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:19,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:19,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:19,020 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 516 flow. Second operand 4 states and 81 transitions. [2023-11-29 04:10:19,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 604 flow [2023-11-29 04:10:19,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 507 flow, removed 35 selfloop flow, removed 15 redundant places. [2023-11-29 04:10:19,028 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 310 flow [2023-11-29 04:10:19,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-29 04:10:19,029 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-11-29 04:10:19,029 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 310 flow [2023-11-29 04:10:19,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:19,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:19,029 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] [2023-11-29 04:10:19,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:10:19,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:19,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash 104632768, now seen corresponding path program 1 times [2023-11-29 04:10:19,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400960500] [2023-11-29 04:10:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:20,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:20,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400960500] [2023-11-29 04:10:20,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400960500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:20,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:20,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:10:20,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208363403] [2023-11-29 04:10:20,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:20,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:10:20,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:10:20,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:10:20,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:20,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:20,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:20,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:20,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:21,471 INFO L124 PetriNetUnfolderBase]: 389/864 cut-off events. [2023-11-29 04:10:21,471 INFO L125 PetriNetUnfolderBase]: For 1565/1583 co-relation queries the response was YES. [2023-11-29 04:10:21,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 864 events. 389/864 cut-off events. For 1565/1583 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5166 event pairs, 130 based on Foata normal form. 15/836 useless extension candidates. Maximal degree in co-relation 2932. Up to 253 conditions per place. [2023-11-29 04:10:21,481 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 25 changer transitions 9/111 dead transitions. [2023-11-29 04:10:21,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 819 flow [2023-11-29 04:10:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:10:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:10:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 230 transitions. [2023-11-29 04:10:21,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2023-11-29 04:10:21,484 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 230 transitions. [2023-11-29 04:10:21,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 230 transitions. [2023-11-29 04:10:21,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:21,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 230 transitions. [2023-11-29 04:10:21,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 32.0) internal successors, (480), 15 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,487 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 32.0) internal successors, (480), 15 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,488 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 310 flow. Second operand 14 states and 230 transitions. [2023-11-29 04:10:21,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 819 flow [2023-11-29 04:10:21,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 815 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 04:10:21,495 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 479 flow [2023-11-29 04:10:21,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=479, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2023-11-29 04:10:21,496 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-11-29 04:10:21,496 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 479 flow [2023-11-29 04:10:21,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:21,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:21,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:10:21,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:21,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash -801372792, now seen corresponding path program 2 times [2023-11-29 04:10:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:21,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95407106] [2023-11-29 04:10:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:21,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:21,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95407106] [2023-11-29 04:10:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95407106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:21,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:21,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898356646] [2023-11-29 04:10:21,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:21,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:21,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:21,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:21,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:21,914 INFO L124 PetriNetUnfolderBase]: 354/741 cut-off events. [2023-11-29 04:10:21,914 INFO L125 PetriNetUnfolderBase]: For 2052/2056 co-relation queries the response was YES. [2023-11-29 04:10:21,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2815 conditions, 741 events. 354/741 cut-off events. For 2052/2056 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3858 event pairs, 88 based on Foata normal form. 55/783 useless extension candidates. Maximal degree in co-relation 2781. Up to 332 conditions per place. [2023-11-29 04:10:21,921 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 6 changer transitions 14/72 dead transitions. [2023-11-29 04:10:21,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 643 flow [2023-11-29 04:10:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:10:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:10:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2023-11-29 04:10:21,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2023-11-29 04:10:21,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2023-11-29 04:10:21,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2023-11-29 04:10:21,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:21,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2023-11-29 04:10:21,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,924 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,925 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 479 flow. Second operand 5 states and 88 transitions. [2023-11-29 04:10:21,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 643 flow [2023-11-29 04:10:21,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 506 flow, removed 45 selfloop flow, removed 13 redundant places. [2023-11-29 04:10:21,934 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 271 flow [2023-11-29 04:10:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-11-29 04:10:21,937 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-11-29 04:10:21,937 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 271 flow [2023-11-29 04:10:21,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:21,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:21,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:21,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:10:21,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:21,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash 443593389, now seen corresponding path program 1 times [2023-11-29 04:10:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:21,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117920950] [2023-11-29 04:10:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117920950] [2023-11-29 04:10:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117920950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:22,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:10:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356546245] [2023-11-29 04:10:22,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:22,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:10:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:10:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:10:22,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2023-11-29 04:10:22,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:22,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:22,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2023-11-29 04:10:22,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:22,931 INFO L124 PetriNetUnfolderBase]: 199/435 cut-off events. [2023-11-29 04:10:22,931 INFO L125 PetriNetUnfolderBase]: For 550/550 co-relation queries the response was YES. [2023-11-29 04:10:22,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 435 events. 199/435 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1925 event pairs, 52 based on Foata normal form. 8/430 useless extension candidates. Maximal degree in co-relation 1316. Up to 184 conditions per place. [2023-11-29 04:10:22,935 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 26 selfloop transitions, 4 changer transitions 38/76 dead transitions. [2023-11-29 04:10:22,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 533 flow [2023-11-29 04:10:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:10:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:10:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2023-11-29 04:10:22,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2023-11-29 04:10:22,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 93 transitions. [2023-11-29 04:10:22,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 93 transitions. [2023-11-29 04:10:22,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:22,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 93 transitions. [2023-11-29 04:10:22,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:22,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:22,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:22,938 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 271 flow. Second operand 6 states and 93 transitions. [2023-11-29 04:10:22,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 533 flow [2023-11-29 04:10:22,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 423 flow, removed 16 selfloop flow, removed 17 redundant places. [2023-11-29 04:10:22,943 INFO L231 Difference]: Finished difference. Result has 60 places, 32 transitions, 125 flow [2023-11-29 04:10:22,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=32} [2023-11-29 04:10:22,943 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-11-29 04:10:22,944 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 32 transitions, 125 flow [2023-11-29 04:10:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:22,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:22,944 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] [2023-11-29 04:10:22,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:10:22,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:22,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1407229013, now seen corresponding path program 2 times [2023-11-29 04:10:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433757922] [2023-11-29 04:10:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:24,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433757922] [2023-11-29 04:10:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433757922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:24,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:24,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:10:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795629087] [2023-11-29 04:10:24,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:24,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:10:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:10:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:10:24,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:24,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 32 transitions, 125 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:24,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:24,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:24,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:24,315 INFO L124 PetriNetUnfolderBase]: 82/204 cut-off events. [2023-11-29 04:10:24,316 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-29 04:10:24,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 204 events. 82/204 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 691 event pairs, 17 based on Foata normal form. 4/202 useless extension candidates. Maximal degree in co-relation 486. Up to 80 conditions per place. [2023-11-29 04:10:24,317 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 19 selfloop transitions, 7 changer transitions 15/51 dead transitions. [2023-11-29 04:10:24,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 259 flow [2023-11-29 04:10:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:10:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2023-11-29 04:10:24,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-11-29 04:10:24,318 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 142 transitions. [2023-11-29 04:10:24,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 142 transitions. [2023-11-29 04:10:24,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:24,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 142 transitions. [2023-11-29 04:10:24,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:24,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:24,321 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:24,321 INFO L175 Difference]: Start difference. First operand has 60 places, 32 transitions, 125 flow. Second operand 10 states and 142 transitions. [2023-11-29 04:10:24,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 259 flow [2023-11-29 04:10:24,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 219 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-11-29 04:10:24,323 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 117 flow [2023-11-29 04:10:24,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=117, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2023-11-29 04:10:24,323 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-29 04:10:24,324 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 117 flow [2023-11-29 04:10:24,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:24,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:24,324 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] [2023-11-29 04:10:24,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:10:24,325 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:10:24,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1013056129, now seen corresponding path program 3 times [2023-11-29 04:10:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:24,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006359638] [2023-11-29 04:10:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:25,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:25,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006359638] [2023-11-29 04:10:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006359638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:25,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:25,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:10:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720157490] [2023-11-29 04:10:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:10:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:10:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:10:25,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 04:10:25,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 117 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:25,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:25,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 04:10:25,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:25,799 INFO L124 PetriNetUnfolderBase]: 48/120 cut-off events. [2023-11-29 04:10:25,800 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 04:10:25,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 120 events. 48/120 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 308 event pairs, 7 based on Foata normal form. 4/120 useless extension candidates. Maximal degree in co-relation 303. Up to 35 conditions per place. [2023-11-29 04:10:25,800 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-11-29 04:10:25,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 203 flow [2023-11-29 04:10:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:10:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2023-11-29 04:10:25,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2023-11-29 04:10:25,802 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 133 transitions. [2023-11-29 04:10:25,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 133 transitions. [2023-11-29 04:10:25,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:25,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 133 transitions. [2023-11-29 04:10:25,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:25,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:25,804 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:25,804 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 117 flow. Second operand 10 states and 133 transitions. [2023-11-29 04:10:25,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 203 flow [2023-11-29 04:10:25,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 183 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-29 04:10:25,806 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-11-29 04:10:25,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-11-29 04:10:25,807 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-11-29 04:10:25,807 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-11-29 04:10:25,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:25,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-29 04:10:25,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 04:10:25,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-29 04:10:25,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-29 04:10:25,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 04:10:25,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:10:25,811 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 04:10:25,815 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:10:25,815 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:10:25,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:10:25 BasicIcfg [2023-11-29 04:10:25,821 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:10:25,821 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:10:25,821 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:10:25,821 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:10:25,822 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:11" (3/4) ... [2023-11-29 04:10:25,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:10:25,826 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 04:10:25,826 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 04:10:25,832 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 76 nodes and edges [2023-11-29 04:10:25,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-29 04:10:25,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 04:10:25,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:10:25,919 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:10:25,920 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:10:25,920 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:10:25,921 INFO L158 Benchmark]: Toolchain (without parser) took 16142.54ms. Allocated memory was 132.1MB in the beginning and 411.0MB in the end (delta: 278.9MB). Free memory was 90.7MB in the beginning and 219.6MB in the end (delta: -128.9MB). Peak memory consumption was 150.8MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,921 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:10:25,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.44ms. Allocated memory is still 132.1MB. Free memory was 90.4MB in the beginning and 65.1MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.72ms. Allocated memory is still 132.1MB. Free memory was 65.1MB in the beginning and 61.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,923 INFO L158 Benchmark]: Boogie Preprocessor took 54.26ms. Allocated memory is still 132.1MB. Free memory was 61.8MB in the beginning and 57.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,923 INFO L158 Benchmark]: RCFGBuilder took 767.40ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 57.6MB in the beginning and 78.1MB in the end (delta: -20.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,923 INFO L158 Benchmark]: TraceAbstraction took 14667.94ms. Allocated memory was 161.5MB in the beginning and 411.0MB in the end (delta: 249.6MB). Free memory was 77.6MB in the beginning and 223.8MB in the end (delta: -146.2MB). Peak memory consumption was 103.4MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,924 INFO L158 Benchmark]: Witness Printer took 99.42ms. Allocated memory is still 411.0MB. Free memory was 223.8MB in the beginning and 219.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:10:25,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.44ms. Allocated memory is still 132.1MB. Free memory was 90.4MB in the beginning and 65.1MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.72ms. Allocated memory is still 132.1MB. Free memory was 65.1MB in the beginning and 61.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.26ms. Allocated memory is still 132.1MB. Free memory was 61.8MB in the beginning and 57.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 767.40ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 57.6MB in the beginning and 78.1MB in the end (delta: -20.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14667.94ms. Allocated memory was 161.5MB in the beginning and 411.0MB in the end (delta: 249.6MB). Free memory was 77.6MB in the beginning and 223.8MB in the end (delta: -146.2MB). Peak memory consumption was 103.4MB. Max. memory is 16.1GB. * Witness Printer took 99.42ms. Allocated memory is still 411.0MB. Free memory was 223.8MB in the beginning and 219.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 491 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 466 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 251 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1840 IncrementalHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 49 mSDtfsCounter, 1840 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=516occurred in iteration=7, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 2556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:10:25,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfed109c-8778-4ab0-adcb-9fceddbc72f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE