./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/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_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/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_c0048d59-906d-417f-9e22-81c59d63d00f/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 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:55,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:55,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:55,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:55,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:55,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:55,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:55,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:55,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:55,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:55,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:55,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:55,549 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:55,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:55,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:55,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:55,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:55,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:55,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:55,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:55,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:55,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:55,555 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:55,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:55,556 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:55,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:55,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:55,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:55,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:55,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:55,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:55,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:55,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:55,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:55,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:55,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:55,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:55,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:55,564 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:55,564 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_c0048d59-906d-417f-9e22-81c59d63d00f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa [2023-11-19 08:00:55,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:55,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:55,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:55,922 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:55,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:55,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 08:00:59,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:59,506 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:59,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 08:00:59,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/data/fda05c0be/3ec0bae3397f4e558bff2fe4a6aa887a/FLAG9e83ee1df [2023-11-19 08:00:59,551 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/data/fda05c0be/3ec0bae3397f4e558bff2fe4a6aa887a [2023-11-19 08:00:59,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:59,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:59,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:59,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:59,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:59,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:59" (1/1) ... [2023-11-19 08:00:59,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640f3c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:59, skipping insertion in model container [2023-11-19 08:00:59,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:59" (1/1) ... [2023-11-19 08:00:59,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:59,882 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_c0048d59-906d-417f-9e22-81c59d63d00f/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 08:01:00,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:00,248 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:00,264 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_c0048d59-906d-417f-9e22-81c59d63d00f/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 08:01:00,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:00,370 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:00,371 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:00,379 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:00,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00 WrapperNode [2023-11-19 08:01:00,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:00,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:00,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:00,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:00,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,481 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-19 08:01:00,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:00,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:00,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:00,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:00,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:00,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:00,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:00,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:00,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (1/1) ... [2023-11-19 08:01:00,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0048d59-906d-417f-9e22-81c59d63d00f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:01:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:01:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:01:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:01:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:01:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:01:00,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:01:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 08:01:00,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 08:01:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:01:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:00,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:00,658 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 08:01:00,805 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:00,807 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:01,196 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:01,447 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:01,448 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:01:01,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:01 BoogieIcfgContainer [2023-11-19 08:01:01,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:01,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:01,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:01,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:01,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:59" (1/3) ... [2023-11-19 08:01:01,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40838841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:01, skipping insertion in model container [2023-11-19 08:01:01,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:00" (2/3) ... [2023-11-19 08:01:01,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40838841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:01, skipping insertion in model container [2023-11-19 08:01:01,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:01" (3/3) ... [2023-11-19 08:01:01,467 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 08:01:01,476 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:01,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:01,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:01:01,488 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:01,590 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:01:01,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 136 transitions, 288 flow [2023-11-19 08:01:01,745 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-11-19 08:01:01,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:01,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 3/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 08:01:01,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 136 transitions, 288 flow [2023-11-19 08:01:01,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 132 transitions, 276 flow [2023-11-19 08:01:01,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:01,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 132 transitions, 276 flow [2023-11-19 08:01:01,786 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 132 transitions, 276 flow [2023-11-19 08:01:01,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 132 transitions, 276 flow [2023-11-19 08:01:01,858 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-11-19 08:01:01,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:01,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 3/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 08:01:01,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 3692 [2023-11-19 08:01:06,791 INFO L134 LiptonReduction]: Checked pairs total: 9279 [2023-11-19 08:01:06,792 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-19 08:01:06,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:06,817 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;@7b7949ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:06,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 08:01:06,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:06,820 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 08:01:06,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:06,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:01:06,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:06,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash 568235, now seen corresponding path program 1 times [2023-11-19 08:01:06,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:06,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400891970] [2023-11-19 08:01:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:07,444 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 08:01:07,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400891970] [2023-11-19 08:01:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400891970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:07,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:07,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:01:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943886161] [2023-11-19 08:01:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:07,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 252 [2023-11-19 08:01:07,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 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 08:01:07,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:07,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 252 [2023-11-19 08:01:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:09,108 INFO L124 PetriNetUnfolderBase]: 4903/7152 cut-off events. [2023-11-19 08:01:09,108 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-19 08:01:09,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14000 conditions, 7152 events. 4903/7152 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42990 event pairs, 895 based on Foata normal form. 0/6802 useless extension candidates. Maximal degree in co-relation 13988. Up to 5335 conditions per place. [2023-11-19 08:01:09,172 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 41 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2023-11-19 08:01:09,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 211 flow [2023-11-19 08:01:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-11-19 08:01:09,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-19 08:01:09,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-11-19 08:01:09,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-11-19 08:01:09,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:09,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-11-19 08:01:09,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 08:01:09,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 08:01:09,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 08:01:09,209 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 405 transitions. [2023-11-19 08:01:09,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 211 flow [2023-11-19 08:01:09,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:01:09,216 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 70 flow [2023-11-19 08:01:09,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=68, 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=70, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-19 08:01:09,222 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-19 08:01:09,222 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 70 flow [2023-11-19 08:01:09,223 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 08:01:09,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:09,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:09,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:09,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:09,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1599434594, now seen corresponding path program 1 times [2023-11-19 08:01:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:09,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587609435] [2023-11-19 08:01:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:09,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:09,589 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 08:01:09,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:09,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587609435] [2023-11-19 08:01:09,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587609435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:09,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:09,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:01:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926871400] [2023-11-19 08:01:09,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:09,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 252 [2023-11-19 08:01:09,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 08:01:09,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 252 [2023-11-19 08:01:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:13,611 INFO L124 PetriNetUnfolderBase]: 19829/26882 cut-off events. [2023-11-19 08:01:13,611 INFO L125 PetriNetUnfolderBase]: For 1227/1227 co-relation queries the response was YES. [2023-11-19 08:01:13,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55580 conditions, 26882 events. 19829/26882 cut-off events. For 1227/1227 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 145146 event pairs, 6979 based on Foata normal form. 760/27642 useless extension candidates. Maximal degree in co-relation 55570. Up to 16304 conditions per place. [2023-11-19 08:01:13,770 INFO L140 encePairwiseOnDemand]: 242/252 looper letters, 44 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2023-11-19 08:01:13,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 230 flow [2023-11-19 08:01:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-11-19 08:01:13,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2023-11-19 08:01:13,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-11-19 08:01:13,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-11-19 08:01:13,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:13,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-11-19 08:01:13,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 08:01:13,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 08:01:13,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 08:01:13,780 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 3 states and 375 transitions. [2023-11-19 08:01:13,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 230 flow [2023-11-19 08:01:13,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:13,784 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 136 flow [2023-11-19 08:01:13,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-19 08:01:13,786 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-11-19 08:01:13,786 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 136 flow [2023-11-19 08:01:13,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 08:01:13,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:13,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:13,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:13,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1957137276, now seen corresponding path program 1 times [2023-11-19 08:01:13,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:13,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636897124] [2023-11-19 08:01:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:13,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:14,000 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 08:01:14,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636897124] [2023-11-19 08:01:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636897124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:14,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:14,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662888187] [2023-11-19 08:01:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:14,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:14,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 252 [2023-11-19 08:01:14,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 08:01:14,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:14,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 252 [2023-11-19 08:01:14,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:17,002 INFO L124 PetriNetUnfolderBase]: 18363/24910 cut-off events. [2023-11-19 08:01:17,002 INFO L125 PetriNetUnfolderBase]: For 11011/11011 co-relation queries the response was YES. [2023-11-19 08:01:17,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63528 conditions, 24910 events. 18363/24910 cut-off events. For 11011/11011 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 132822 event pairs, 3733 based on Foata normal form. 260/25170 useless extension candidates. Maximal degree in co-relation 63516. Up to 11521 conditions per place. [2023-11-19 08:01:17,178 INFO L140 encePairwiseOnDemand]: 243/252 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-11-19 08:01:17,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 388 flow [2023-11-19 08:01:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-11-19 08:01:17,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-11-19 08:01:17,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-11-19 08:01:17,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-11-19 08:01:17,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:17,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-11-19 08:01:17,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:17,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:17,202 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:17,202 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 136 flow. Second operand 4 states and 495 transitions. [2023-11-19 08:01:17,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 388 flow [2023-11-19 08:01:17,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:17,353 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 186 flow [2023-11-19 08:01:17,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-19 08:01:17,354 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-19 08:01:17,355 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 186 flow [2023-11-19 08:01:17,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 08:01:17,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:17,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:17,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:01:17,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:17,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 594617939, now seen corresponding path program 1 times [2023-11-19 08:01:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:17,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391864499] [2023-11-19 08:01:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391864499] [2023-11-19 08:01:17,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391864499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:17,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:17,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381816504] [2023-11-19 08:01:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 252 [2023-11-19 08:01:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 08:01:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 252 [2023-11-19 08:01:17,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:20,411 INFO L124 PetriNetUnfolderBase]: 17311/23490 cut-off events. [2023-11-19 08:01:20,412 INFO L125 PetriNetUnfolderBase]: For 19677/19677 co-relation queries the response was YES. [2023-11-19 08:01:20,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63517 conditions, 23490 events. 17311/23490 cut-off events. For 19677/19677 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 119770 event pairs, 4643 based on Foata normal form. 200/23690 useless extension candidates. Maximal degree in co-relation 63502. Up to 10031 conditions per place. [2023-11-19 08:01:20,566 INFO L140 encePairwiseOnDemand]: 242/252 looper letters, 62 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2023-11-19 08:01:20,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 470 flow [2023-11-19 08:01:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2023-11-19 08:01:20,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4871031746031746 [2023-11-19 08:01:20,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 491 transitions. [2023-11-19 08:01:20,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 491 transitions. [2023-11-19 08:01:20,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:20,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 491 transitions. [2023-11-19 08:01:20,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 08:01:20,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:20,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:20,582 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 186 flow. Second operand 4 states and 491 transitions. [2023-11-19 08:01:20,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 470 flow [2023-11-19 08:01:20,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:20,628 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 324 flow [2023-11-19 08:01:20,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-11-19 08:01:20,631 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-11-19 08:01:20,631 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 324 flow [2023-11-19 08:01:20,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 08:01:20,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:20,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:20,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:01:20,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:20,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1898111772, now seen corresponding path program 1 times [2023-11-19 08:01:20,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:20,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969871741] [2023-11-19 08:01:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:20,896 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 08:01:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:20,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969871741] [2023-11-19 08:01:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969871741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:20,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:20,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:20,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98931036] [2023-11-19 08:01:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:20,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:20,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:20,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 252 [2023-11-19 08:01:20,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 08:01:20,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:20,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 252 [2023-11-19 08:01:20,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:23,781 INFO L124 PetriNetUnfolderBase]: 17095/23194 cut-off events. [2023-11-19 08:01:23,781 INFO L125 PetriNetUnfolderBase]: For 36652/36652 co-relation queries the response was YES. [2023-11-19 08:01:23,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70335 conditions, 23194 events. 17095/23194 cut-off events. For 36652/36652 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 122044 event pairs, 2944 based on Foata normal form. 32/23226 useless extension candidates. Maximal degree in co-relation 70316. Up to 13129 conditions per place. [2023-11-19 08:01:23,905 INFO L140 encePairwiseOnDemand]: 242/252 looper letters, 65 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2023-11-19 08:01:23,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 683 flow [2023-11-19 08:01:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-11-19 08:01:23,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990079365079365 [2023-11-19 08:01:23,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-11-19 08:01:23,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-11-19 08:01:23,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:23,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-11-19 08:01:23,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 08:01:23,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:23,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:23,917 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 324 flow. Second operand 4 states and 503 transitions. [2023-11-19 08:01:23,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 683 flow [2023-11-19 08:01:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:23,963 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 496 flow [2023-11-19 08:01:23,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=496, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-19 08:01:23,964 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-11-19 08:01:23,964 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 496 flow [2023-11-19 08:01:23,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 08:01:23,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:23,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:23,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:01:23,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:23,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1933642492, now seen corresponding path program 1 times [2023-11-19 08:01:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:23,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686478443] [2023-11-19 08:01:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:24,124 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 08:01:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:24,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686478443] [2023-11-19 08:01:24,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686478443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:24,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:24,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:24,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683108380] [2023-11-19 08:01:24,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:24,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:24,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 08:01:24,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 08:01:24,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:24,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 08:01:24,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:25,922 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([405] L786-->L793: Formula: (let ((.cse1 (not (= 0 (mod v_~a$r_buff1_thd2~0_16 256)))) (.cse5 (not (= (mod v_~a$r_buff0_thd2~0_18 256) 0))) (.cse0 (not (= (mod v_~a$w_buff0_used~0_111 256) 0)))) (let ((.cse3 (and .cse5 .cse0)) (.cse2 (and (not (= (mod v_~a$w_buff0_used~0_112 256) 0)) .cse5)) (.cse4 (and .cse1 (not (= (mod v_~a$w_buff1_used~0_103 256) 0))))) (and (= v_~a$r_buff1_thd2~0_15 (ite (or (and (not (= (mod v_~a$r_buff0_thd2~0_17 256) 0)) .cse0) (and (not (= (mod v_~a$w_buff1_used~0_102 256) 0)) .cse1)) 0 v_~a$r_buff1_thd2~0_16)) (= (ite .cse2 0 v_~a$w_buff0_used~0_112) v_~a$w_buff0_used~0_111) (= (ite (or .cse3 .cse4) 0 v_~a$w_buff1_used~0_103) v_~a$w_buff1_used~0_102) (= v_~a$r_buff0_thd2~0_17 (ite .cse3 0 v_~a$r_buff0_thd2~0_18)) (= v_~a~0_50 (ite .cse2 v_~a$w_buff0~0_34 (ite .cse4 v_~a$w_buff1~0_31 v_~a~0_51)))))) InVars {~a~0=v_~a~0_51, ~a$w_buff1~0=v_~a$w_buff1~0_31, ~a$w_buff0~0=v_~a$w_buff0~0_34, ~a$r_buff1_thd2~0=v_~a$r_buff1_thd2~0_16, ~a$r_buff0_thd2~0=v_~a$r_buff0_thd2~0_18, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_112, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_103} OutVars{~a~0=v_~a~0_50, ~a$w_buff1~0=v_~a$w_buff1~0_31, ~a$w_buff0~0=v_~a$w_buff0~0_34, ~a$r_buff1_thd2~0=v_~a$r_buff1_thd2~0_15, ~a$r_buff0_thd2~0=v_~a$r_buff0_thd2~0_17, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_111, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_102} AuxVars[] AssignedVars[~a~0, ~a$r_buff1_thd2~0, ~a$r_buff0_thd2~0, ~a$w_buff0_used~0, ~a$w_buff1_used~0][102], [75#L809true, 114#L793true, 83#L826true, Black: 161#(<= ~__unbuffered_p2_EAX~0 0), 162#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 32#L880true, Black: 159#true, 107#P0EXITtrue, Black: 170#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), P3Thread1of1ForFork2InUse, Black: 167#true, P1Thread1of1ForFork3InUse, P0Thread1of1ForFork1InUse, P2Thread1of1ForFork0InUse, 185#(= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0), Black: 177#(= ~x~0 0), Black: 153#true, 178#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0)))]) [2023-11-19 08:01:25,922 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2023-11-19 08:01:25,922 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-19 08:01:25,923 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-19 08:01:25,923 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-19 08:01:27,025 INFO L124 PetriNetUnfolderBase]: 10430/15591 cut-off events. [2023-11-19 08:01:27,025 INFO L125 PetriNetUnfolderBase]: For 26843/27873 co-relation queries the response was YES. [2023-11-19 08:01:27,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45391 conditions, 15591 events. 10430/15591 cut-off events. For 26843/27873 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 100667 event pairs, 1644 based on Foata normal form. 1673/16798 useless extension candidates. Maximal degree in co-relation 45369. Up to 9066 conditions per place. [2023-11-19 08:01:27,141 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 100 selfloop transitions, 10 changer transitions 0/135 dead transitions. [2023-11-19 08:01:27,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 135 transitions, 1178 flow [2023-11-19 08:01:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:01:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:01:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-19 08:01:27,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2023-11-19 08:01:27,146 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-19 08:01:27,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-19 08:01:27,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:27,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-19 08:01:27,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 08:01:27,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 08:01:27,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 08:01:27,153 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 496 flow. Second operand 5 states and 637 transitions. [2023-11-19 08:01:27,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 135 transitions, 1178 flow [2023-11-19 08:01:27,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 135 transitions, 1178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:27,186 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 571 flow [2023-11-19 08:01:27,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=571, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2023-11-19 08:01:27,187 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2023-11-19 08:01:27,187 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 571 flow [2023-11-19 08:01:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 08:01:27,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:27,188 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 08:01:27,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:01:27,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:27,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1773961219, now seen corresponding path program 1 times [2023-11-19 08:01:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:27,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159595446] [2023-11-19 08:01:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:27,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159595446] [2023-11-19 08:01:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159595446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:27,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510022126] [2023-11-19 08:01:27,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:27,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:27,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:27,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 252 [2023-11-19 08:01:27,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 571 flow. Second operand has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 08:01:27,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:27,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 252 [2023-11-19 08:01:27,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:30,401 INFO L124 PetriNetUnfolderBase]: 15587/23356 cut-off events. [2023-11-19 08:01:30,401 INFO L125 PetriNetUnfolderBase]: For 62666/64462 co-relation queries the response was YES. [2023-11-19 08:01:30,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87901 conditions, 23356 events. 15587/23356 cut-off events. For 62666/64462 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 158181 event pairs, 2782 based on Foata normal form. 773/23695 useless extension candidates. Maximal degree in co-relation 87874. Up to 11440 conditions per place. [2023-11-19 08:01:30,537 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 80 selfloop transitions, 3 changer transitions 16/121 dead transitions. [2023-11-19 08:01:30,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 1084 flow [2023-11-19 08:01:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-11-19 08:01:30,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109126984126984 [2023-11-19 08:01:30,540 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-11-19 08:01:30,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-11-19 08:01:30,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:30,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-11-19 08:01:30,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 08:01:30,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:30,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:30,547 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 571 flow. Second operand 4 states and 515 transitions. [2023-11-19 08:01:30,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 1084 flow [2023-11-19 08:01:30,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 1072 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:30,746 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 581 flow [2023-11-19 08:01:30,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=581, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-11-19 08:01:30,748 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2023-11-19 08:01:30,748 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 581 flow [2023-11-19 08:01:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 08:01:30,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:30,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:30,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:01:30,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:30,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1895513621, now seen corresponding path program 1 times [2023-11-19 08:01:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:30,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375754654] [2023-11-19 08:01:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:30,958 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 08:01:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:30,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375754654] [2023-11-19 08:01:30,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375754654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:30,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:30,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798071245] [2023-11-19 08:01:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:30,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:30,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:30,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 252 [2023-11-19 08:01:30,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 581 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 08:01:30,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:30,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 252 [2023-11-19 08:01:30,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:36,845 INFO L124 PetriNetUnfolderBase]: 28827/41222 cut-off events. [2023-11-19 08:01:36,845 INFO L125 PetriNetUnfolderBase]: For 141866/141866 co-relation queries the response was YES. [2023-11-19 08:01:36,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163678 conditions, 41222 events. 28827/41222 cut-off events. For 141866/141866 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 265667 event pairs, 7725 based on Foata normal form. 168/41390 useless extension candidates. Maximal degree in co-relation 163649. Up to 18525 conditions per place. [2023-11-19 08:01:37,047 INFO L140 encePairwiseOnDemand]: 242/252 looper letters, 89 selfloop transitions, 30 changer transitions 19/138 dead transitions. [2023-11-19 08:01:37,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 138 transitions, 1285 flow [2023-11-19 08:01:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 505 transitions. [2023-11-19 08:01:37,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009920634920635 [2023-11-19 08:01:37,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 505 transitions. [2023-11-19 08:01:37,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 505 transitions. [2023-11-19 08:01:37,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:37,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 505 transitions. [2023-11-19 08:01:37,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 08:01:37,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:37,059 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:01:37,059 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 581 flow. Second operand 4 states and 505 transitions. [2023-11-19 08:01:37,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 138 transitions, 1285 flow [2023-11-19 08:01:37,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 1282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:37,699 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 812 flow [2023-11-19 08:01:37,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2023-11-19 08:01:37,700 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-11-19 08:01:37,701 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 812 flow [2023-11-19 08:01:37,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 08:01:37,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:37,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:37,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:01:37,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:37,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash 525058417, now seen corresponding path program 1 times [2023-11-19 08:01:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:37,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3453735] [2023-11-19 08:01:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:38,091 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 08:01:38,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:38,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3453735] [2023-11-19 08:01:38,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3453735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:38,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:38,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:38,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207904791] [2023-11-19 08:01:38,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:38,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:38,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:38,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 08:01:38,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 812 flow. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 08:01:38,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:38,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 08:01:38,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:41,094 INFO L124 PetriNetUnfolderBase]: 11125/17583 cut-off events. [2023-11-19 08:01:41,094 INFO L125 PetriNetUnfolderBase]: For 49121/50412 co-relation queries the response was YES. [2023-11-19 08:01:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63768 conditions, 17583 events. 11125/17583 cut-off events. For 49121/50412 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 126704 event pairs, 1464 based on Foata normal form. 2110/19370 useless extension candidates. Maximal degree in co-relation 63735. Up to 6689 conditions per place. [2023-11-19 08:01:41,194 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 130 selfloop transitions, 14 changer transitions 8/182 dead transitions. [2023-11-19 08:01:41,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 182 transitions, 2100 flow [2023-11-19 08:01:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2023-11-19 08:01:41,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072751322751323 [2023-11-19 08:01:41,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2023-11-19 08:01:41,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2023-11-19 08:01:41,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:41,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2023-11-19 08:01:41,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 08:01:41,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 08:01:41,212 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 08:01:41,212 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 812 flow. Second operand 6 states and 767 transitions. [2023-11-19 08:01:41,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 182 transitions, 2100 flow [2023-11-19 08:01:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 182 transitions, 2084 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:41,522 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 924 flow [2023-11-19 08:01:41,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=924, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2023-11-19 08:01:41,523 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-11-19 08:01:41,523 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 924 flow [2023-11-19 08:01:41,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 08:01:41,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:41,524 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] [2023-11-19 08:01:41,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:01:41,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:41,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1110850020, now seen corresponding path program 1 times [2023-11-19 08:01:41,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47548805] [2023-11-19 08:01:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:41,787 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 08:01:41,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47548805] [2023-11-19 08:01:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47548805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:41,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:41,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:41,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777246542] [2023-11-19 08:01:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:41,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:41,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:41,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 08:01:41,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 924 flow. Second operand has 6 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 08:01:41,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:41,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 08:01:41,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:44,525 INFO L124 PetriNetUnfolderBase]: 10034/15915 cut-off events. [2023-11-19 08:01:44,526 INFO L125 PetriNetUnfolderBase]: For 52565/53624 co-relation queries the response was YES. [2023-11-19 08:01:44,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67736 conditions, 15915 events. 10034/15915 cut-off events. For 52565/53624 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 114290 event pairs, 1178 based on Foata normal form. 1039/16645 useless extension candidates. Maximal degree in co-relation 67699. Up to 6290 conditions per place. [2023-11-19 08:01:44,620 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 144 selfloop transitions, 23 changer transitions 24/221 dead transitions. [2023-11-19 08:01:44,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 221 transitions, 2564 flow [2023-11-19 08:01:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:01:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1022 transitions. [2023-11-19 08:01:44,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2023-11-19 08:01:44,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1022 transitions. [2023-11-19 08:01:44,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1022 transitions. [2023-11-19 08:01:44,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:44,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1022 transitions. [2023-11-19 08:01:44,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.75) internal successors, (1022), 8 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 08:01:44,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 252.0) internal successors, (2268), 9 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states 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 08:01:44,638 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 252.0) internal successors, (2268), 9 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states 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 08:01:44,638 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 924 flow. Second operand 8 states and 1022 transitions. [2023-11-19 08:01:44,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 221 transitions, 2564 flow [2023-11-19 08:01:48,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 221 transitions, 2520 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:48,208 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 1048 flow [2023-11-19 08:01:48,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2023-11-19 08:01:48,209 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2023-11-19 08:01:48,210 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 1048 flow [2023-11-19 08:01:48,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 08:01:48,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:48,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:48,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:01:48,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:01:48,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1800515599, now seen corresponding path program 1 times [2023-11-19 08:01:48,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057319412] [2023-11-19 08:01:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:48,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:48,630 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 08:01:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057319412] [2023-11-19 08:01:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057319412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:48,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:48,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:48,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986736123] [2023-11-19 08:01:48,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:48,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:48,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:48,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 08:01:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 1048 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 08:01:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 08:01:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand