./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix027_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix027_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu --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 ca8042a994ed433e8dc5deebabd166a79d030a0388291f832432b8dc85340f9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:39,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:39,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:41:39,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:39,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:39,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:39,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:39,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:39,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:39,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:39,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:39,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:39,840 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:39,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:39,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:39,842 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:39,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:39,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:39,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:39,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:39,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:39,847 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:39,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:39,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:39,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:39,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:39,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:39,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:39,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:39,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:39,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:39,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:39,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:39,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:39,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:39,855 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:39,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:39,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:39,857 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:39,857 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_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8042a994ed433e8dc5deebabd166a79d030a0388291f832432b8dc85340f9d [2023-11-19 07:41:40,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:40,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:40,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:40,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:40,289 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:40,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix027_tso.i [2023-11-19 07:41:44,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:44,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:44,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/sv-benchmarks/c/pthread-wmm/mix027_tso.i [2023-11-19 07:41:44,558 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/data/aa45c1155/1c34e19913094059ad6a1ee65a73b090/FLAGeae269855 [2023-11-19 07:41:44,578 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/data/aa45c1155/1c34e19913094059ad6a1ee65a73b090 [2023-11-19 07:41:44,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:44,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:44,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:44,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:44,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:44,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a59be5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44, skipping insertion in model container [2023-11-19 07:41:44,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:44,902 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_f0614da0-658e-4342-a88a-65ee91f68cf6/sv-benchmarks/c/pthread-wmm/mix027_tso.i[944,957] [2023-11-19 07:41:45,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:45,343 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:45,362 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_f0614da0-658e-4342-a88a-65ee91f68cf6/sv-benchmarks/c/pthread-wmm/mix027_tso.i[944,957] [2023-11-19 07:41:45,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:45,541 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:45,541 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:45,551 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:45,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45 WrapperNode [2023-11-19 07:41:45,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:45,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:45,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:45,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:45,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,671 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 160 [2023-11-19 07:41:45,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:45,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:45,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:45,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:45,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:45,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:45,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:45,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:45,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:45,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:45,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:45,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614da0-658e-4342-a88a-65ee91f68cf6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:41:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:41:45,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:41:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:41:45,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:41:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:41:45,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:41:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:41:45,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:41:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:41:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:45,893 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:41:46,107 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:46,110 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:46,606 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:46,921 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:46,924 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:46,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:46 BoogieIcfgContainer [2023-11-19 07:41:46,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:46,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:46,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:46,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:46,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:44" (1/3) ... [2023-11-19 07:41:46,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bb2e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:46, skipping insertion in model container [2023-11-19 07:41:46,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45" (2/3) ... [2023-11-19 07:41:46,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bb2e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:46, skipping insertion in model container [2023-11-19 07:41:46,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:46" (3/3) ... [2023-11-19 07:41:46,941 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2023-11-19 07:41:46,952 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:41:46,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:46,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:41:46,964 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:41:47,082 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:41:47,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 134 transitions, 284 flow [2023-11-19 07:41:47,235 INFO L124 PetriNetUnfolderBase]: 3/130 cut-off events. [2023-11-19 07:41:47,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:47,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 3/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:41:47,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 134 transitions, 284 flow [2023-11-19 07:41:47,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 130 transitions, 272 flow [2023-11-19 07:41:47,261 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:41:47,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 130 transitions, 272 flow [2023-11-19 07:41:47,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 130 transitions, 272 flow [2023-11-19 07:41:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 130 transitions, 272 flow [2023-11-19 07:41:47,354 INFO L124 PetriNetUnfolderBase]: 3/130 cut-off events. [2023-11-19 07:41:47,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:47,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 3/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:41:47,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 3532 [2023-11-19 07:41:55,089 INFO L134 LiptonReduction]: Checked pairs total: 9487 [2023-11-19 07:41:55,089 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-19 07:41:55,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:55,135 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;@4fbc19c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:55,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:41:55,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:41:55,148 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 07:41:55,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:55,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:55,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:41:55,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:55,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash 540380110, now seen corresponding path program 1 times [2023-11-19 07:41:55,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:55,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170216595] [2023-11-19 07:41:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:55,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:55,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:55,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170216595] [2023-11-19 07:41:55,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170216595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:55,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699427192] [2023-11-19 07:41:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:55,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:55,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:55,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 247 [2023-11-19 07:41:55,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:55,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:55,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 247 [2023-11-19 07:41:55,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:57,322 INFO L124 PetriNetUnfolderBase]: 3927/5514 cut-off events. [2023-11-19 07:41:57,322 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-19 07:41:57,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11066 conditions, 5514 events. 3927/5514 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 27661 event pairs, 1469 based on Foata normal form. 0/5213 useless extension candidates. Maximal degree in co-relation 11054. Up to 4291 conditions per place. [2023-11-19 07:41:57,371 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 37 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2023-11-19 07:41:57,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 192 flow [2023-11-19 07:41:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-19 07:41:57,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303643724696356 [2023-11-19 07:41:57,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-19 07:41:57,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-19 07:41:57,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:57,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-19 07:41:57,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,412 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 393 transitions. [2023-11-19 07:41:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 192 flow [2023-11-19 07:41:57,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:41:57,419 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-19 07:41:57,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-11-19 07:41:57,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:41:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-19 07:41:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:57,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:57,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:57,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:57,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1871258671, now seen corresponding path program 1 times [2023-11-19 07:41:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:57,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136104971] [2023-11-19 07:41:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:57,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136104971] [2023-11-19 07:41:57,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136104971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:57,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:57,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149430053] [2023-11-19 07:41:57,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:57,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:57,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:57,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 247 [2023-11-19 07:41:57,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:57,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:57,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 247 [2023-11-19 07:41:57,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:59,191 INFO L124 PetriNetUnfolderBase]: 3895/5832 cut-off events. [2023-11-19 07:41:59,191 INFO L125 PetriNetUnfolderBase]: For 357/357 co-relation queries the response was YES. [2023-11-19 07:41:59,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11742 conditions, 5832 events. 3895/5832 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 32185 event pairs, 967 based on Foata normal form. 32/5780 useless extension candidates. Maximal degree in co-relation 11732. Up to 4801 conditions per place. [2023-11-19 07:41:59,300 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 34 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-19 07:41:59,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 172 flow [2023-11-19 07:41:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:59,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-11-19 07:41:59,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168690958164642 [2023-11-19 07:41:59,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-11-19 07:41:59,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-11-19 07:41:59,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:59,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-11-19 07:41:59,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:59,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:59,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:59,322 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 383 transitions. [2023-11-19 07:41:59,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 172 flow [2023-11-19 07:41:59,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:59,327 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 83 flow [2023-11-19 07:41:59,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-11-19 07:41:59,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:41:59,337 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 83 flow [2023-11-19 07:41:59,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:59,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:59,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:59,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:59,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:41:59,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:59,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2120525152, now seen corresponding path program 1 times [2023-11-19 07:41:59,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:59,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836379810] [2023-11-19 07:41:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:59,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836379810] [2023-11-19 07:41:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836379810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:59,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:59,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:59,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971110790] [2023-11-19 07:41:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:59,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:59,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:59,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 247 [2023-11-19 07:41:59,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:59,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:59,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 247 [2023-11-19 07:41:59,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:00,940 INFO L124 PetriNetUnfolderBase]: 4095/5925 cut-off events. [2023-11-19 07:42:00,940 INFO L125 PetriNetUnfolderBase]: For 460/476 co-relation queries the response was YES. [2023-11-19 07:42:00,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12380 conditions, 5925 events. 4095/5925 cut-off events. For 460/476 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 30914 event pairs, 1535 based on Foata normal form. 128/6029 useless extension candidates. Maximal degree in co-relation 12369. Up to 3617 conditions per place. [2023-11-19 07:42:01,018 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 34 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-19 07:42:01,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 177 flow [2023-11-19 07:42:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-11-19 07:42:01,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182186234817814 [2023-11-19 07:42:01,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-11-19 07:42:01,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-11-19 07:42:01,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:01,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-11-19 07:42:01,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,032 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 83 flow. Second operand 3 states and 384 transitions. [2023-11-19 07:42:01,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 177 flow [2023-11-19 07:42:01,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:01,036 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 88 flow [2023-11-19 07:42:01,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-11-19 07:42:01,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-19 07:42:01,043 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 88 flow [2023-11-19 07:42:01,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:01,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:42:01,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:01,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1314223468, now seen corresponding path program 1 times [2023-11-19 07:42:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:01,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666831365] [2023-11-19 07:42:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666831365] [2023-11-19 07:42:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666831365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:01,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:01,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179979651] [2023-11-19 07:42:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:01,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:01,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 247 [2023-11-19 07:42:01,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:01,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:01,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 247 [2023-11-19 07:42:01,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:03,025 INFO L124 PetriNetUnfolderBase]: 4311/6082 cut-off events. [2023-11-19 07:42:03,025 INFO L125 PetriNetUnfolderBase]: For 949/971 co-relation queries the response was YES. [2023-11-19 07:42:03,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13173 conditions, 6082 events. 4311/6082 cut-off events. For 949/971 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30877 event pairs, 2293 based on Foata normal form. 20/6057 useless extension candidates. Maximal degree in co-relation 13160. Up to 5704 conditions per place. [2023-11-19 07:42:03,083 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 44 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2023-11-19 07:42:03,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 274 flow [2023-11-19 07:42:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:42:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2023-11-19 07:42:03,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232793522267206 [2023-11-19 07:42:03,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2023-11-19 07:42:03,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2023-11-19 07:42:03,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:03,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2023-11-19 07:42:03,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:03,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:03,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:03,096 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 88 flow. Second operand 4 states and 517 transitions. [2023-11-19 07:42:03,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 274 flow [2023-11-19 07:42:03,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:42:03,100 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 146 flow [2023-11-19 07:42:03,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-19 07:42:03,101 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-11-19 07:42:03,102 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 146 flow [2023-11-19 07:42:03,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:03,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:03,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:42:03,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:03,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2089491301, now seen corresponding path program 1 times [2023-11-19 07:42:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:03,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874521741] [2023-11-19 07:42:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:03,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874521741] [2023-11-19 07:42:03,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874521741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:03,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:03,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035832056] [2023-11-19 07:42:03,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:03,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:03,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:03,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 247 [2023-11-19 07:42:03,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:03,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:03,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 247 [2023-11-19 07:42:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:04,912 INFO L124 PetriNetUnfolderBase]: 4341/6132 cut-off events. [2023-11-19 07:42:04,913 INFO L125 PetriNetUnfolderBase]: For 2893/3434 co-relation queries the response was YES. [2023-11-19 07:42:04,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15543 conditions, 6132 events. 4341/6132 cut-off events. For 2893/3434 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 31106 event pairs, 2135 based on Foata normal form. 101/6202 useless extension candidates. Maximal degree in co-relation 15529. Up to 5741 conditions per place. [2023-11-19 07:42:04,966 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 53 selfloop transitions, 19 changer transitions 0/77 dead transitions. [2023-11-19 07:42:04,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 412 flow [2023-11-19 07:42:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:42:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-11-19 07:42:04,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109311740890689 [2023-11-19 07:42:04,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-11-19 07:42:04,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-11-19 07:42:04,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:04,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-11-19 07:42:04,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:04,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:04,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:04,979 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 146 flow. Second operand 5 states and 631 transitions. [2023-11-19 07:42:04,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 412 flow [2023-11-19 07:42:04,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:42:04,996 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 272 flow [2023-11-19 07:42:04,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-11-19 07:42:04,999 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-11-19 07:42:04,999 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 272 flow [2023-11-19 07:42:05,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:05,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:05,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:05,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:42:05,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:05,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2086158181, now seen corresponding path program 2 times [2023-11-19 07:42:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283863744] [2023-11-19 07:42:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283863744] [2023-11-19 07:42:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283863744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:05,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546945071] [2023-11-19 07:42:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:05,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:05,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:05,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 247 [2023-11-19 07:42:05,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:05,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:05,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 247 [2023-11-19 07:42:05,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:07,315 INFO L124 PetriNetUnfolderBase]: 4840/6884 cut-off events. [2023-11-19 07:42:07,315 INFO L125 PetriNetUnfolderBase]: For 7606/9023 co-relation queries the response was YES. [2023-11-19 07:42:07,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 6884 events. 4840/6884 cut-off events. For 7606/9023 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35445 event pairs, 1641 based on Foata normal form. 201/7055 useless extension candidates. Maximal degree in co-relation 19695. Up to 5485 conditions per place. [2023-11-19 07:42:07,391 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 66 selfloop transitions, 20 changer transitions 0/91 dead transitions. [2023-11-19 07:42:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 578 flow [2023-11-19 07:42:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:42:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 522 transitions. [2023-11-19 07:42:07,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52834008097166 [2023-11-19 07:42:07,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 522 transitions. [2023-11-19 07:42:07,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 522 transitions. [2023-11-19 07:42:07,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:07,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 522 transitions. [2023-11-19 07:42:07,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:07,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:07,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:07,402 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 272 flow. Second operand 4 states and 522 transitions. [2023-11-19 07:42:07,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 578 flow [2023-11-19 07:42:07,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 564 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:07,415 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 374 flow [2023-11-19 07:42:07,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2023-11-19 07:42:07,416 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-11-19 07:42:07,416 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 374 flow [2023-11-19 07:42:07,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:07,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:07,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:42:07,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:07,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1339156655, now seen corresponding path program 1 times [2023-11-19 07:42:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883131738] [2023-11-19 07:42:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883131738] [2023-11-19 07:42:08,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883131738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:08,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:08,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:42:08,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147545224] [2023-11-19 07:42:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:42:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:42:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:42:08,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 247 [2023-11-19 07:42:08,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:08,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:08,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 247 [2023-11-19 07:42:08,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:09,327 INFO L124 PetriNetUnfolderBase]: 4711/6753 cut-off events. [2023-11-19 07:42:09,328 INFO L125 PetriNetUnfolderBase]: For 12889/14343 co-relation queries the response was YES. [2023-11-19 07:42:09,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22736 conditions, 6753 events. 4711/6753 cut-off events. For 12889/14343 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 35579 event pairs, 1086 based on Foata normal form. 192/6927 useless extension candidates. Maximal degree in co-relation 22715. Up to 5356 conditions per place. [2023-11-19 07:42:09,401 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 78 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-11-19 07:42:09,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 689 flow [2023-11-19 07:42:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:42:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2023-11-19 07:42:09,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222672064777328 [2023-11-19 07:42:09,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2023-11-19 07:42:09,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2023-11-19 07:42:09,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:09,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2023-11-19 07:42:09,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:09,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:09,409 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:09,410 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 374 flow. Second operand 4 states and 516 transitions. [2023-11-19 07:42:09,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 689 flow [2023-11-19 07:42:09,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 94 transitions, 675 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:09,433 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 390 flow [2023-11-19 07:42:09,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2023-11-19 07:42:09,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-11-19 07:42:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 390 flow [2023-11-19 07:42:09,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:09,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:09,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:42:09,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:09,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1339179936, now seen corresponding path program 1 times [2023-11-19 07:42:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:09,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245047292] [2023-11-19 07:42:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:09,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:09,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245047292] [2023-11-19 07:42:09,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245047292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:09,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:09,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:42:09,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273386374] [2023-11-19 07:42:09,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:09,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:42:09,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:42:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:42:09,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 247 [2023-11-19 07:42:09,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:09,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:09,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 247 [2023-11-19 07:42:09,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:11,214 INFO L124 PetriNetUnfolderBase]: 5173/7552 cut-off events. [2023-11-19 07:42:11,214 INFO L125 PetriNetUnfolderBase]: For 15215/16598 co-relation queries the response was YES. [2023-11-19 07:42:11,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25510 conditions, 7552 events. 5173/7552 cut-off events. For 15215/16598 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 41792 event pairs, 1080 based on Foata normal form. 230/7750 useless extension candidates. Maximal degree in co-relation 25487. Up to 4752 conditions per place. [2023-11-19 07:42:11,303 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 77 selfloop transitions, 28 changer transitions 0/110 dead transitions. [2023-11-19 07:42:11,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 110 transitions, 793 flow [2023-11-19 07:42:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:42:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-11-19 07:42:11,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174089068825911 [2023-11-19 07:42:11,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-11-19 07:42:11,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-11-19 07:42:11,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:11,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-11-19 07:42:11,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:11,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:11,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:11,315 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 390 flow. Second operand 5 states and 639 transitions. [2023-11-19 07:42:11,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 110 transitions, 793 flow [2023-11-19 07:42:11,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 110 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:42:11,338 INFO L231 Difference]: Finished difference. Result has 60 places, 67 transitions, 509 flow [2023-11-19 07:42:11,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=509, PETRI_PLACES=60, PETRI_TRANSITIONS=67} [2023-11-19 07:42:11,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-11-19 07:42:11,340 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 67 transitions, 509 flow [2023-11-19 07:42:11,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:11,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:11,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:11,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:42:11,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:11,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:11,342 INFO L85 PathProgramCache]: Analyzing trace with hash -356354768, now seen corresponding path program 1 times [2023-11-19 07:42:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:11,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302671169] [2023-11-19 07:42:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:11,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:11,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302671169] [2023-11-19 07:42:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302671169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:11,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:11,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471371551] [2023-11-19 07:42:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:11,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:11,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 247 [2023-11-19 07:42:11,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:11,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:11,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 247 [2023-11-19 07:42:11,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:13,054 INFO L124 PetriNetUnfolderBase]: 4390/6500 cut-off events. [2023-11-19 07:42:13,055 INFO L125 PetriNetUnfolderBase]: For 23621/23972 co-relation queries the response was YES. [2023-11-19 07:42:13,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24646 conditions, 6500 events. 4390/6500 cut-off events. For 23621/23972 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 37149 event pairs, 652 based on Foata normal form. 595/6965 useless extension candidates. Maximal degree in co-relation 24622. Up to 3934 conditions per place. [2023-11-19 07:42:13,146 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 123 selfloop transitions, 10 changer transitions 14/157 dead transitions. [2023-11-19 07:42:13,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 157 transitions, 1446 flow [2023-11-19 07:42:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:42:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-11-19 07:42:13,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044534412955466 [2023-11-19 07:42:13,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-11-19 07:42:13,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-11-19 07:42:13,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:13,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-11-19 07:42:13,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:13,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:13,160 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:13,160 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 509 flow. Second operand 5 states and 623 transitions. [2023-11-19 07:42:13,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 157 transitions, 1446 flow [2023-11-19 07:42:13,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 157 transitions, 1363 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-19 07:42:13,193 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 463 flow [2023-11-19 07:42:13,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-11-19 07:42:13,194 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2023-11-19 07:42:13,194 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 463 flow [2023-11-19 07:42:13,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:13,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:13,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:13,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:42:13,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:13,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1770405173, now seen corresponding path program 1 times [2023-11-19 07:42:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:13,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992561297] [2023-11-19 07:42:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:13,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992561297] [2023-11-19 07:42:13,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992561297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:13,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:42:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972013249] [2023-11-19 07:42:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:13,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:13,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 247 [2023-11-19 07:42:13,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:13,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:13,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 247 [2023-11-19 07:42:13,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:14,419 INFO L124 PetriNetUnfolderBase]: 3581/5475 cut-off events. [2023-11-19 07:42:14,419 INFO L125 PetriNetUnfolderBase]: For 21047/21340 co-relation queries the response was YES. [2023-11-19 07:42:14,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22967 conditions, 5475 events. 3581/5475 cut-off events. For 21047/21340 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31776 event pairs, 335 based on Foata normal form. 418/5775 useless extension candidates. Maximal degree in co-relation 22940. Up to 1820 conditions per place. [2023-11-19 07:42:14,466 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 155 selfloop transitions, 19 changer transitions 21/205 dead transitions. [2023-11-19 07:42:14,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 205 transitions, 1866 flow [2023-11-19 07:42:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:42:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:42:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 874 transitions. [2023-11-19 07:42:14,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2023-11-19 07:42:14,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 874 transitions. [2023-11-19 07:42:14,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 874 transitions. [2023-11-19 07:42:14,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:14,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 874 transitions. [2023-11-19 07:42:14,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.85714285714286) internal successors, (874), 7 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:14,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:14,481 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:14,481 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 463 flow. Second operand 7 states and 874 transitions. [2023-11-19 07:42:14,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 205 transitions, 1866 flow [2023-11-19 07:42:14,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 205 transitions, 1861 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:14,514 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 582 flow [2023-11-19 07:42:14,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-11-19 07:42:14,515 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-11-19 07:42:14,515 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 582 flow [2023-11-19 07:42:14,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:14,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:14,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:14,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:42:14,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1730634845, now seen corresponding path program 1 times [2023-11-19 07:42:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:14,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079431857] [2023-11-19 07:42:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:14,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079431857] [2023-11-19 07:42:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079431857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:42:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721703584] [2023-11-19 07:42:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:42:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:42:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:42:14,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 247 [2023-11-19 07:42:14,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 113.83333333333333) internal successors, (683), 6 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:14,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:14,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 247 [2023-11-19 07:42:14,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:15,704 INFO L124 PetriNetUnfolderBase]: 3295/5065 cut-off events. [2023-11-19 07:42:15,705 INFO L125 PetriNetUnfolderBase]: For 22830/23318 co-relation queries the response was YES. [2023-11-19 07:42:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23234 conditions, 5065 events. 3295/5065 cut-off events. For 22830/23318 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 29523 event pairs, 291 based on Foata normal form. 221/5182 useless extension candidates. Maximal degree in co-relation 23203. Up to 1677 conditions per place. [2023-11-19 07:42:15,759 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 174 selfloop transitions, 28 changer transitions 22/234 dead transitions. [2023-11-19 07:42:15,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 234 transitions, 2223 flow [2023-11-19 07:42:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:42:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:42:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1123 transitions. [2023-11-19 07:42:15,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051731893837157 [2023-11-19 07:42:15,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1123 transitions. [2023-11-19 07:42:15,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1123 transitions. [2023-11-19 07:42:15,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:15,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1123 transitions. [2023-11-19 07:42:15,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.77777777777777) internal successors, (1123), 9 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:15,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:15,777 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:15,777 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 582 flow. Second operand 9 states and 1123 transitions. [2023-11-19 07:42:15,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 234 transitions, 2223 flow [2023-11-19 07:42:15,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 234 transitions, 2150 flow, removed 31 selfloop flow, removed 2 redundant places. [2023-11-19 07:42:15,999 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 705 flow [2023-11-19 07:42:15,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=705, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2023-11-19 07:42:16,000 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2023-11-19 07:42:16,000 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 705 flow [2023-11-19 07:42:16,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.83333333333333) internal successors, (683), 6 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:16,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:16,002 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] [2023-11-19 07:42:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:42:16,002 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:16,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1151831210, now seen corresponding path program 1 times [2023-11-19 07:42:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729809520] [2023-11-19 07:42:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:16,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729809520] [2023-11-19 07:42:16,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729809520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:16,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882524213] [2023-11-19 07:42:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:16,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:16,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 247 [2023-11-19 07:42:16,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 705 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:16,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:16,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 247 [2023-11-19 07:42:16,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:17,866 INFO L124 PetriNetUnfolderBase]: 5761/8912 cut-off events. [2023-11-19 07:42:17,866 INFO L125 PetriNetUnfolderBase]: For 41858/41975 co-relation queries the response was YES. [2023-11-19 07:42:17,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42156 conditions, 8912 events. 5761/8912 cut-off events. For 41858/41975 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 56551 event pairs, 968 based on Foata normal form. 95/8952 useless extension candidates. Maximal degree in co-relation 42121. Up to 4758 conditions per place. [2023-11-19 07:42:17,964 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 169 selfloop transitions, 2 changer transitions 14/194 dead transitions. [2023-11-19 07:42:17,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 194 transitions, 2070 flow [2023-11-19 07:42:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:42:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2023-11-19 07:42:17,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182186234817814 [2023-11-19 07:42:17,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2023-11-19 07:42:17,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2023-11-19 07:42:17,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:17,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2023-11-19 07:42:17,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:17,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:17,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:17,976 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 705 flow. Second operand 4 states and 512 transitions. [2023-11-19 07:42:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 194 transitions, 2070 flow [2023-11-19 07:42:18,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 194 transitions, 1817 flow, removed 87 selfloop flow, removed 4 redundant places. [2023-11-19 07:42:18,417 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 617 flow [2023-11-19 07:42:18,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-11-19 07:42:18,418 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2023-11-19 07:42:18,418 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 617 flow [2023-11-19 07:42:18,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:18,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:18,419 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] [2023-11-19 07:42:18,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:42:18,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:18,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1964076920, now seen corresponding path program 2 times [2023-11-19 07:42:18,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:18,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279262113] [2023-11-19 07:42:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:18,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279262113] [2023-11-19 07:42:18,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279262113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:18,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:18,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:18,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519566282] [2023-11-19 07:42:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:18,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:18,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 247 [2023-11-19 07:42:18,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:18,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:18,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 247 [2023-11-19 07:42:18,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:20,260 INFO L124 PetriNetUnfolderBase]: 4726/7319 cut-off events. [2023-11-19 07:42:20,260 INFO L125 PetriNetUnfolderBase]: For 30811/31320 co-relation queries the response was YES. [2023-11-19 07:42:20,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32887 conditions, 7319 events. 4726/7319 cut-off events. For 30811/31320 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 46503 event pairs, 323 based on Foata normal form. 180/7359 useless extension candidates. Maximal degree in co-relation 32850. Up to 2644 conditions per place. [2023-11-19 07:42:20,324 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 161 selfloop transitions, 32 changer transitions 32/235 dead transitions. [2023-11-19 07:42:20,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 235 transitions, 2189 flow [2023-11-19 07:42:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1345 transitions. [2023-11-19 07:42:20,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950312845049687 [2023-11-19 07:42:20,331 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1345 transitions. [2023-11-19 07:42:20,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1345 transitions. [2023-11-19 07:42:20,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:20,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1345 transitions. [2023-11-19 07:42:20,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.27272727272727) internal successors, (1345), 11 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:20,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 247.0) internal successors, (2964), 12 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:20,346 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 247.0) internal successors, (2964), 12 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:20,346 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 617 flow. Second operand 11 states and 1345 transitions. [2023-11-19 07:42:20,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 235 transitions, 2189 flow [2023-11-19 07:42:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 235 transitions, 2150 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:42:20,693 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 683 flow [2023-11-19 07:42:20,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=683, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2023-11-19 07:42:20,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2023-11-19 07:42:20,695 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 683 flow [2023-11-19 07:42:20,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:20,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:20,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:42:20,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:20,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash 687291254, now seen corresponding path program 1 times [2023-11-19 07:42:20,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336785904] [2023-11-19 07:42:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:21,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:21,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336785904] [2023-11-19 07:42:21,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336785904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:21,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:21,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:42:21,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934899377] [2023-11-19 07:42:21,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:21,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:21,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:21,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:21,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 247 [2023-11-19 07:42:21,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 683 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:21,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:21,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 247 [2023-11-19 07:42:21,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:23,553 INFO L124 PetriNetUnfolderBase]: 10105/14802 cut-off events. [2023-11-19 07:42:23,553 INFO L125 PetriNetUnfolderBase]: For 56759/56967 co-relation queries the response was YES. [2023-11-19 07:42:23,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65944 conditions, 14802 events. 10105/14802 cut-off events. For 56759/56967 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 89441 event pairs, 905 based on Foata normal form. 148/14851 useless extension candidates. Maximal degree in co-relation 65914. Up to 7047 conditions per place. [2023-11-19 07:42:23,656 INFO L140 encePairwiseOnDemand]: 234/247 looper letters, 128 selfloop transitions, 29 changer transitions 95/256 dead transitions. [2023-11-19 07:42:23,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 256 transitions, 2569 flow [2023-11-19 07:42:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:42:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2023-11-19 07:42:23,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47705802968960864 [2023-11-19 07:42:23,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2023-11-19 07:42:23,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2023-11-19 07:42:23,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:23,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2023-11-19 07:42:23,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:23,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:23,672 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:23,672 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 683 flow. Second operand 6 states and 707 transitions. [2023-11-19 07:42:23,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 256 transitions, 2569 flow [2023-11-19 07:42:24,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 256 transitions, 2262 flow, removed 53 selfloop flow, removed 11 redundant places. [2023-11-19 07:42:24,166 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 855 flow [2023-11-19 07:42:24,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=855, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2023-11-19 07:42:24,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 45 predicate places. [2023-11-19 07:42:24,167 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 855 flow [2023-11-19 07:42:24,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:24,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:24,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:24,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:42:24,168 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:42:24,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash -830272964, now seen corresponding path program 2 times [2023-11-19 07:42:24,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856228783] [2023-11-19 07:42:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856228783] [2023-11-19 07:42:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856228783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:24,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:24,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126125804] [2023-11-19 07:42:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:24,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:24,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 247 [2023-11-19 07:42:24,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 855 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:24,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:24,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 247 [2023-11-19 07:42:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand