./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_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_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/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_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/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_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/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 0e4c58396f2f1321fc04aa282f0d0da6b992b027ee8ad0492bbdba2f990191a3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:20,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:20,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:20,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:20,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:20,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:20,476 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:20,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:20,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:20,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:20,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:20,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:20,485 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:20,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:20,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:20,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:20,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:20,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:20,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:20,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:20,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:20,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:20,491 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:20,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:20,492 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:20,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:20,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:20,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:20,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:20,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:20,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:20,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:20,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:20,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:20,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:20,509 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:20,509 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:20,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:20,510 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:20,510 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_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e4c58396f2f1321fc04aa282f0d0da6b992b027ee8ad0492bbdba2f990191a3 [2023-11-19 08:05:20,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:20,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:20,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:20,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:20,881 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:20,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 08:05:24,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:24,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:24,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/sv-benchmarks/c/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 08:05:24,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/data/ae3f2672d/03b95fe509004a4f8a56076ceafe71ab/FLAG59285e78f [2023-11-19 08:05:24,562 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/data/ae3f2672d/03b95fe509004a4f8a56076ceafe71ab [2023-11-19 08:05:24,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:24,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:24,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:24,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:24,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:24,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70eca17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24, skipping insertion in model container [2023-11-19 08:05:24,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,646 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:24,821 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_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/sv-benchmarks/c/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-11-19 08:05:25,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:25,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:25,216 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_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/sv-benchmarks/c/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-11-19 08:05:25,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:25,367 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:25,367 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:25,375 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:25,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25 WrapperNode [2023-11-19 08:05:25,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:25,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:25,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:25,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:25,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,477 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-19 08:05:25,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:25,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:25,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:25,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:25,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:25,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:25,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:25,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:25,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:25,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:25,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:25,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebbc6ab7-5ee0-450a-976e-d7a89e5ab5e5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:05:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:05:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:05:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:05:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:05:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:05:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:05:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:05:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:25,666 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 08:05:25,810 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:25,812 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:26,250 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:26,508 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:26,508 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:05:26,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:26 BoogieIcfgContainer [2023-11-19 08:05:26,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:26,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:26,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:26,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:26,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:24" (1/3) ... [2023-11-19 08:05:26,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa805d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:26, skipping insertion in model container [2023-11-19 08:05:26,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (2/3) ... [2023-11-19 08:05:26,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa805d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:26, skipping insertion in model container [2023-11-19 08:05:26,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:26" (3/3) ... [2023-11-19 08:05:26,531 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 08:05:26,539 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:05:26,552 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:26,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:05:26,552 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:05:26,632 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:05:26,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 234 flow [2023-11-19 08:05:26,764 INFO L124 PetriNetUnfolderBase]: 3/108 cut-off events. [2023-11-19 08:05:26,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:26,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 108 events. 3/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-11-19 08:05:26,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 111 transitions, 234 flow [2023-11-19 08:05:26,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 108 transitions, 225 flow [2023-11-19 08:05:26,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:26,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 108 transitions, 225 flow [2023-11-19 08:05:26,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 108 transitions, 225 flow [2023-11-19 08:05:26,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 108 transitions, 225 flow [2023-11-19 08:05:26,851 INFO L124 PetriNetUnfolderBase]: 3/108 cut-off events. [2023-11-19 08:05:26,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:26,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 108 events. 3/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-11-19 08:05:26,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 2218 [2023-11-19 08:05:31,295 INFO L134 LiptonReduction]: Checked pairs total: 5418 [2023-11-19 08:05:31,295 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-11-19 08:05:31,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:31,329 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;@7da42c31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:31,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 08:05:31,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:31,334 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 08:05:31,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:31,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:31,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:05:31,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:31,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash 549943, now seen corresponding path program 1 times [2023-11-19 08:05:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999434848] [2023-11-19 08:05:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,848 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 08:05:31,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:31,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999434848] [2023-11-19 08:05:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999434848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:31,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:31,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:05:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926633772] [2023-11-19 08:05:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:31,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:31,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 208 [2023-11-19 08:05:31,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 08:05:31,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:31,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 208 [2023-11-19 08:05:31,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:32,465 INFO L124 PetriNetUnfolderBase]: 1263/2016 cut-off events. [2023-11-19 08:05:32,465 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 08:05:32,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 2016 events. 1263/2016 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10911 event pairs, 204 based on Foata normal form. 80/1935 useless extension candidates. Maximal degree in co-relation 3916. Up to 1510 conditions per place. [2023-11-19 08:05:32,489 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 33 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-11-19 08:05:32,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 175 flow [2023-11-19 08:05:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-11-19 08:05:32,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2023-11-19 08:05:32,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-11-19 08:05:32,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-11-19 08:05:32,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:32,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-11-19 08:05:32,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 08:05:32,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 08:05:32,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 08:05:32,527 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 324 transitions. [2023-11-19 08:05:32,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 175 flow [2023-11-19 08:05:32,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:32,533 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 54 flow [2023-11-19 08:05:32,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-11-19 08:05:32,539 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-11-19 08:05:32,539 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 54 flow [2023-11-19 08:05:32,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 08:05:32,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:32,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:32,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:32,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2060620429, now seen corresponding path program 1 times [2023-11-19 08:05:32,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80329498] [2023-11-19 08:05:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:32,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:33,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:33,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80329498] [2023-11-19 08:05:33,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80329498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:33,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:33,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787845689] [2023-11-19 08:05:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:33,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 208 [2023-11-19 08:05:33,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 08:05:33,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:33,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 208 [2023-11-19 08:05:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:34,736 INFO L124 PetriNetUnfolderBase]: 1407/2122 cut-off events. [2023-11-19 08:05:34,737 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-19 08:05:34,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2122 events. 1407/2122 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9812 event pairs, 264 based on Foata normal form. 116/2232 useless extension candidates. Maximal degree in co-relation 4404. Up to 1397 conditions per place. [2023-11-19 08:05:34,757 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 31 selfloop transitions, 9 changer transitions 27/68 dead transitions. [2023-11-19 08:05:34,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 68 transitions, 286 flow [2023-11-19 08:05:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 658 transitions. [2023-11-19 08:05:34,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-11-19 08:05:34,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 658 transitions. [2023-11-19 08:05:34,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 658 transitions. [2023-11-19 08:05:34,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:34,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 658 transitions. [2023-11-19 08:05:34,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 08:05:34,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:34,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:34,787 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 54 flow. Second operand 7 states and 658 transitions. [2023-11-19 08:05:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 68 transitions, 286 flow [2023-11-19 08:05:34,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:34,791 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 136 flow [2023-11-19 08:05:34,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-19 08:05:34,793 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-19 08:05:34,800 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 136 flow [2023-11-19 08:05:34,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 08:05:34,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:34,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:34,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:34,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:34,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -545270869, now seen corresponding path program 1 times [2023-11-19 08:05:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:34,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060849730] [2023-11-19 08:05:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:35,241 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 08:05:35,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060849730] [2023-11-19 08:05:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060849730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:35,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:35,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:35,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024510181] [2023-11-19 08:05:35,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:35,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:35,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:35,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 208 [2023-11-19 08:05:35,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 08:05:35,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:35,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 208 [2023-11-19 08:05:35,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:35,736 INFO L124 PetriNetUnfolderBase]: 1133/1726 cut-off events. [2023-11-19 08:05:35,736 INFO L125 PetriNetUnfolderBase]: For 1769/1809 co-relation queries the response was YES. [2023-11-19 08:05:35,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5628 conditions, 1726 events. 1133/1726 cut-off events. For 1769/1809 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7962 event pairs, 312 based on Foata normal form. 120/1821 useless extension candidates. Maximal degree in co-relation 5612. Up to 1040 conditions per place. [2023-11-19 08:05:35,754 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 35 selfloop transitions, 3 changer transitions 24/65 dead transitions. [2023-11-19 08:05:35,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 430 flow [2023-11-19 08:05:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2023-11-19 08:05:35,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2023-11-19 08:05:35,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2023-11-19 08:05:35,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2023-11-19 08:05:35,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:35,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2023-11-19 08:05:35,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 08:05:35,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 08:05:35,764 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 08:05:35,764 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 136 flow. Second operand 5 states and 506 transitions. [2023-11-19 08:05:35,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 430 flow [2023-11-19 08:05:35,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 424 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:35,785 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 145 flow [2023-11-19 08:05:35,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-19 08:05:35,786 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-11-19 08:05:35,790 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 145 flow [2023-11-19 08:05:35,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 08:05:35,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:35,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:35,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:35,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:35,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash 278215966, now seen corresponding path program 1 times [2023-11-19 08:05:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:35,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433056618] [2023-11-19 08:05:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:36,869 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 08:05:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433056618] [2023-11-19 08:05:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433056618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321676633] [2023-11-19 08:05:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:36,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 208 [2023-11-19 08:05:36,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 08:05:36,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:36,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 208 [2023-11-19 08:05:36,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:37,828 INFO L124 PetriNetUnfolderBase]: 2276/3384 cut-off events. [2023-11-19 08:05:37,828 INFO L125 PetriNetUnfolderBase]: For 3289/3289 co-relation queries the response was YES. [2023-11-19 08:05:37,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11203 conditions, 3384 events. 2276/3384 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16181 event pairs, 430 based on Foata normal form. 90/3474 useless extension candidates. Maximal degree in co-relation 11184. Up to 1638 conditions per place. [2023-11-19 08:05:37,860 INFO L140 encePairwiseOnDemand]: 195/208 looper letters, 40 selfloop transitions, 12 changer transitions 28/80 dead transitions. [2023-11-19 08:05:37,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 535 flow [2023-11-19 08:05:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2023-11-19 08:05:37,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2023-11-19 08:05:37,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 568 transitions. [2023-11-19 08:05:37,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 568 transitions. [2023-11-19 08:05:37,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:37,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 568 transitions. [2023-11-19 08:05:37,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 08:05:37,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 08:05:37,871 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 08:05:37,871 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 145 flow. Second operand 6 states and 568 transitions. [2023-11-19 08:05:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 535 flow [2023-11-19 08:05:37,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 80 transitions, 506 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-19 08:05:37,961 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 181 flow [2023-11-19 08:05:37,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-11-19 08:05:37,963 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-11-19 08:05:37,963 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 181 flow [2023-11-19 08:05:37,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 08:05:37,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:37,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:37,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:37,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:37,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 276428506, now seen corresponding path program 2 times [2023-11-19 08:05:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665951092] [2023-11-19 08:05:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:37,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:39,376 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 08:05:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665951092] [2023-11-19 08:05:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665951092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:39,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75013712] [2023-11-19 08:05:39,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:39,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:39,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 208 [2023-11-19 08:05:39,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 08:05:39,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:39,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 208 [2023-11-19 08:05:39,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:40,320 INFO L124 PetriNetUnfolderBase]: 1658/2507 cut-off events. [2023-11-19 08:05:40,321 INFO L125 PetriNetUnfolderBase]: For 2921/2921 co-relation queries the response was YES. [2023-11-19 08:05:40,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9234 conditions, 2507 events. 1658/2507 cut-off events. For 2921/2921 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11517 event pairs, 214 based on Foata normal form. 90/2597 useless extension candidates. Maximal degree in co-relation 9216. Up to 1435 conditions per place. [2023-11-19 08:05:40,351 INFO L140 encePairwiseOnDemand]: 195/208 looper letters, 41 selfloop transitions, 13 changer transitions 34/88 dead transitions. [2023-11-19 08:05:40,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 88 transitions, 649 flow [2023-11-19 08:05:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2023-11-19 08:05:40,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2023-11-19 08:05:40,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2023-11-19 08:05:40,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2023-11-19 08:05:40,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:40,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2023-11-19 08:05:40,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 08:05:40,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:40,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:40,367 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 181 flow. Second operand 7 states and 652 transitions. [2023-11-19 08:05:40,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 88 transitions, 649 flow [2023-11-19 08:05:40,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 88 transitions, 595 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:40,382 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 217 flow [2023-11-19 08:05:40,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-11-19 08:05:40,387 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-11-19 08:05:40,387 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 217 flow [2023-11-19 08:05:40,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 08:05:40,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:40,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:40,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:40,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:40,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash 122123409, now seen corresponding path program 1 times [2023-11-19 08:05:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658235098] [2023-11-19 08:05:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:40,709 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 08:05:40,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658235098] [2023-11-19 08:05:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658235098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:40,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919409090] [2023-11-19 08:05:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:40,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:40,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:40,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 208 [2023-11-19 08:05:40,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 08:05:40,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:40,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 208 [2023-11-19 08:05:40,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:41,179 INFO L124 PetriNetUnfolderBase]: 1219/1886 cut-off events. [2023-11-19 08:05:41,180 INFO L125 PetriNetUnfolderBase]: For 3774/3774 co-relation queries the response was YES. [2023-11-19 08:05:41,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 1886 events. 1219/1886 cut-off events. For 3774/3774 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8597 event pairs, 585 based on Foata normal form. 69/1929 useless extension candidates. Maximal degree in co-relation 7271. Up to 1622 conditions per place. [2023-11-19 08:05:41,203 INFO L140 encePairwiseOnDemand]: 203/208 looper letters, 43 selfloop transitions, 4 changer transitions 17/67 dead transitions. [2023-11-19 08:05:41,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 538 flow [2023-11-19 08:05:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 499 transitions. [2023-11-19 08:05:41,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798076923076923 [2023-11-19 08:05:41,207 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 499 transitions. [2023-11-19 08:05:41,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 499 transitions. [2023-11-19 08:05:41,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:41,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 499 transitions. [2023-11-19 08:05:41,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 08:05:41,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 08:05:41,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 08:05:41,213 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 217 flow. Second operand 5 states and 499 transitions. [2023-11-19 08:05:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 538 flow [2023-11-19 08:05:41,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 486 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-19 08:05:41,221 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 232 flow [2023-11-19 08:05:41,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-11-19 08:05:41,224 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-11-19 08:05:41,224 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 232 flow [2023-11-19 08:05:41,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 08:05:41,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:41,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:41,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:41,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1325951210, now seen corresponding path program 1 times [2023-11-19 08:05:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:41,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863439507] [2023-11-19 08:05:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:42,021 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 08:05:42,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:42,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863439507] [2023-11-19 08:05:42,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863439507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:42,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:42,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778335440] [2023-11-19 08:05:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:42,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:42,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:42,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 208 [2023-11-19 08:05:42,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 08:05:42,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:42,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 208 [2023-11-19 08:05:42,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:42,752 INFO L124 PetriNetUnfolderBase]: 1674/2601 cut-off events. [2023-11-19 08:05:42,752 INFO L125 PetriNetUnfolderBase]: For 5194/5194 co-relation queries the response was YES. [2023-11-19 08:05:42,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9802 conditions, 2601 events. 1674/2601 cut-off events. For 5194/5194 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12911 event pairs, 550 based on Foata normal form. 81/2644 useless extension candidates. Maximal degree in co-relation 9779. Up to 1263 conditions per place. [2023-11-19 08:05:42,792 INFO L140 encePairwiseOnDemand]: 201/208 looper letters, 47 selfloop transitions, 10 changer transitions 14/74 dead transitions. [2023-11-19 08:05:42,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 550 flow [2023-11-19 08:05:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2023-11-19 08:05:42,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452724358974359 [2023-11-19 08:05:42,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2023-11-19 08:05:42,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2023-11-19 08:05:42,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:42,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2023-11-19 08:05:42,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 08:05:42,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 08:05:42,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 08:05:42,804 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 232 flow. Second operand 6 states and 565 transitions. [2023-11-19 08:05:42,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 550 flow [2023-11-19 08:05:42,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 537 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:42,815 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 287 flow [2023-11-19 08:05:42,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-11-19 08:05:42,816 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-11-19 08:05:42,816 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 287 flow [2023-11-19 08:05:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 08:05:42,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:42,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:42,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:05:42,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:42,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:42,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1337970976, now seen corresponding path program 1 times [2023-11-19 08:05:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:42,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539323748] [2023-11-19 08:05:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:42,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:43,987 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 08:05:43,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:43,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539323748] [2023-11-19 08:05:43,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539323748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:43,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:43,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977891737] [2023-11-19 08:05:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:44,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 208 [2023-11-19 08:05:44,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 287 flow. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 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 08:05:44,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:44,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 208 [2023-11-19 08:05:44,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:44,984 INFO L124 PetriNetUnfolderBase]: 2577/3941 cut-off events. [2023-11-19 08:05:44,984 INFO L125 PetriNetUnfolderBase]: For 10042/10042 co-relation queries the response was YES. [2023-11-19 08:05:45,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15249 conditions, 3941 events. 2577/3941 cut-off events. For 10042/10042 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20173 event pairs, 747 based on Foata normal form. 94/4035 useless extension candidates. Maximal degree in co-relation 15222. Up to 1838 conditions per place. [2023-11-19 08:05:45,023 INFO L140 encePairwiseOnDemand]: 195/208 looper letters, 51 selfloop transitions, 17 changer transitions 28/96 dead transitions. [2023-11-19 08:05:45,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 816 flow [2023-11-19 08:05:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-11-19 08:05:45,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4416208791208791 [2023-11-19 08:05:45,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-11-19 08:05:45,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-11-19 08:05:45,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:45,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-11-19 08:05:45,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 08:05:45,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:45,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:45,035 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 287 flow. Second operand 7 states and 643 transitions. [2023-11-19 08:05:45,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 816 flow [2023-11-19 08:05:45,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 778 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:45,054 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 327 flow [2023-11-19 08:05:45,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-19 08:05:45,055 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-11-19 08:05:45,055 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 327 flow [2023-11-19 08:05:45,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 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 08:05:45,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:45,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:45,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:05:45,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:45,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1339758436, now seen corresponding path program 2 times [2023-11-19 08:05:45,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:45,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168016789] [2023-11-19 08:05:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:45,721 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 08:05:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168016789] [2023-11-19 08:05:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168016789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418780546] [2023-11-19 08:05:45,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:45,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-11-19 08:05:45,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 08:05:45,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:45,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-11-19 08:05:45,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:46,643 INFO L124 PetriNetUnfolderBase]: 1704/2717 cut-off events. [2023-11-19 08:05:46,643 INFO L125 PetriNetUnfolderBase]: For 8962/8989 co-relation queries the response was YES. [2023-11-19 08:05:46,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11394 conditions, 2717 events. 1704/2717 cut-off events. For 8962/8989 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14124 event pairs, 260 based on Foata normal form. 126/2836 useless extension candidates. Maximal degree in co-relation 11365. Up to 1396 conditions per place. [2023-11-19 08:05:46,667 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 53 selfloop transitions, 15 changer transitions 44/114 dead transitions. [2023-11-19 08:05:46,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 1029 flow [2023-11-19 08:05:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:05:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 787 transitions. [2023-11-19 08:05:46,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4729567307692308 [2023-11-19 08:05:46,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 787 transitions. [2023-11-19 08:05:46,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 787 transitions. [2023-11-19 08:05:46,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:46,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 787 transitions. [2023-11-19 08:05:46,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.375) internal successors, (787), 8 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 08:05:46,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states 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 08:05:46,680 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states 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 08:05:46,680 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 327 flow. Second operand 8 states and 787 transitions. [2023-11-19 08:05:46,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 1029 flow [2023-11-19 08:05:46,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 114 transitions, 944 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-19 08:05:46,695 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 385 flow [2023-11-19 08:05:46,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2023-11-19 08:05:46,696 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-19 08:05:46,696 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 385 flow [2023-11-19 08:05:46,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 08:05:46,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:46,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:05:46,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1205468479, now seen corresponding path program 1 times [2023-11-19 08:05:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619980181] [2023-11-19 08:05:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,511 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 08:05:47,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:47,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619980181] [2023-11-19 08:05:47,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619980181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:47,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765095101] [2023-11-19 08:05:47,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:47,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:47,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 208 [2023-11-19 08:05:47,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 08:05:47,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:47,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 208 [2023-11-19 08:05:47,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:48,079 INFO L124 PetriNetUnfolderBase]: 1174/1881 cut-off events. [2023-11-19 08:05:48,079 INFO L125 PetriNetUnfolderBase]: For 9487/9499 co-relation queries the response was YES. [2023-11-19 08:05:48,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 1881 events. 1174/1881 cut-off events. For 9487/9499 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8828 event pairs, 641 based on Foata normal form. 62/1943 useless extension candidates. Maximal degree in co-relation 8535. Up to 1519 conditions per place. [2023-11-19 08:05:48,098 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 51 selfloop transitions, 14 changer transitions 15/82 dead transitions. [2023-11-19 08:05:48,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 794 flow [2023-11-19 08:05:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2023-11-19 08:05:48,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2023-11-19 08:05:48,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2023-11-19 08:05:48,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2023-11-19 08:05:48,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:48,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2023-11-19 08:05:48,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 08:05:48,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 08:05:48,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 08:05:48,108 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 385 flow. Second operand 6 states and 578 transitions. [2023-11-19 08:05:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 794 flow [2023-11-19 08:05:48,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 707 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-11-19 08:05:48,130 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 427 flow [2023-11-19 08:05:48,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2023-11-19 08:05:48,131 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-19 08:05:48,131 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 427 flow [2023-11-19 08:05:48,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 08:05:48,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:48,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:48,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:05:48,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:48,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1719060591, now seen corresponding path program 2 times [2023-11-19 08:05:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021598088] [2023-11-19 08:05:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:49,036 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 08:05:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021598088] [2023-11-19 08:05:49,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021598088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:49,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155874805] [2023-11-19 08:05:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:49,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:49,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:49,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 208 [2023-11-19 08:05:49,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 89.75) internal successors, (718), 8 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 08:05:49,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:49,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 208 [2023-11-19 08:05:49,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:49,687 INFO L124 PetriNetUnfolderBase]: 1174/1880 cut-off events. [2023-11-19 08:05:49,687 INFO L125 PetriNetUnfolderBase]: For 10313/10328 co-relation queries the response was YES. [2023-11-19 08:05:49,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9061 conditions, 1880 events. 1174/1880 cut-off events. For 10313/10328 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8840 event pairs, 632 based on Foata normal form. 64/1944 useless extension candidates. Maximal degree in co-relation 9028. Up to 1519 conditions per place. [2023-11-19 08:05:49,704 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 62 selfloop transitions, 20 changer transitions 22/106 dead transitions. [2023-11-19 08:05:49,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 106 transitions, 1078 flow [2023-11-19 08:05:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:05:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 868 transitions. [2023-11-19 08:05:49,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2023-11-19 08:05:49,710 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 868 transitions. [2023-11-19 08:05:49,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 868 transitions. [2023-11-19 08:05:49,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 868 transitions. [2023-11-19 08:05:49,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 08:05:49,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states 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 08:05:49,718 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states 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 08:05:49,718 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 427 flow. Second operand 9 states and 868 transitions. [2023-11-19 08:05:49,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 106 transitions, 1078 flow [2023-11-19 08:05:49,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 1039 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:49,740 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 605 flow [2023-11-19 08:05:49,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-11-19 08:05:49,741 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2023-11-19 08:05:49,741 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 605 flow [2023-11-19 08:05:49,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.75) internal successors, (718), 8 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 08:05:49,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:49,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:05:49,742 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:49,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:49,743 INFO L85 PathProgramCache]: Analyzing trace with hash -184654992, now seen corresponding path program 1 times [2023-11-19 08:05:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:49,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370298093] [2023-11-19 08:05:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:49,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:50,895 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 08:05:50,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370298093] [2023-11-19 08:05:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370298093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:50,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423502182] [2023-11-19 08:05:50,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:50,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:50,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 208 [2023-11-19 08:05:50,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 605 flow. Second operand has 7 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 08:05:50,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:50,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 208 [2023-11-19 08:05:50,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:51,716 INFO L124 PetriNetUnfolderBase]: 1381/2210 cut-off events. [2023-11-19 08:05:51,716 INFO L125 PetriNetUnfolderBase]: For 20073/20089 co-relation queries the response was YES. [2023-11-19 08:05:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12325 conditions, 2210 events. 1381/2210 cut-off events. For 20073/20089 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10916 event pairs, 418 based on Foata normal form. 102/2306 useless extension candidates. Maximal degree in co-relation 12286. Up to 1525 conditions per place. [2023-11-19 08:05:51,736 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 67 selfloop transitions, 19 changer transitions 24/112 dead transitions. [2023-11-19 08:05:51,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 112 transitions, 1278 flow [2023-11-19 08:05:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 657 transitions. [2023-11-19 08:05:51,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45123626373626374 [2023-11-19 08:05:51,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 657 transitions. [2023-11-19 08:05:51,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 657 transitions. [2023-11-19 08:05:51,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:51,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 657 transitions. [2023-11-19 08:05:51,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.85714285714286) internal successors, (657), 7 states have internal predecessors, (657), 0 states have call successors, (0), 0 states 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 08:05:51,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:51,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:51,748 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 605 flow. Second operand 7 states and 657 transitions. [2023-11-19 08:05:51,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 112 transitions, 1278 flow [2023-11-19 08:05:51,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 112 transitions, 1202 flow, removed 33 selfloop flow, removed 5 redundant places. [2023-11-19 08:05:51,805 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 743 flow [2023-11-19 08:05:51,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=743, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-11-19 08:05:51,807 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2023-11-19 08:05:51,807 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 743 flow [2023-11-19 08:05:51,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states 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 08:05:51,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:51,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:51,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:05:51,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:51,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1679478338, now seen corresponding path program 2 times [2023-11-19 08:05:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:51,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081354519] [2023-11-19 08:05:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:51,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:52,812 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 08:05:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081354519] [2023-11-19 08:05:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081354519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:52,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:52,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:05:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897104597] [2023-11-19 08:05:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:05:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:05:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:05:52,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 208 [2023-11-19 08:05:52,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 743 flow. Second operand has 9 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 08:05:52,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:52,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 208 [2023-11-19 08:05:52,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:54,143 INFO L124 PetriNetUnfolderBase]: 1421/2305 cut-off events. [2023-11-19 08:05:54,143 INFO L125 PetriNetUnfolderBase]: For 20876/20902 co-relation queries the response was YES. [2023-11-19 08:05:54,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13492 conditions, 2305 events. 1421/2305 cut-off events. For 20876/20902 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11657 event pairs, 406 based on Foata normal form. 75/2374 useless extension candidates. Maximal degree in co-relation 13452. Up to 1615 conditions per place. [2023-11-19 08:05:54,162 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 84 selfloop transitions, 51 changer transitions 30/167 dead transitions. [2023-11-19 08:05:54,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 167 transitions, 2057 flow [2023-11-19 08:05:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:05:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 08:05:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1392 transitions. [2023-11-19 08:05:54,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2023-11-19 08:05:54,170 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1392 transitions. [2023-11-19 08:05:54,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1392 transitions. [2023-11-19 08:05:54,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:54,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1392 transitions. [2023-11-19 08:05:54,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.8) internal successors, (1392), 15 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 08:05:54,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 208.0) internal successors, (3328), 16 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states 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 08:05:54,184 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 208.0) internal successors, (3328), 16 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states 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 08:05:54,184 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 743 flow. Second operand 15 states and 1392 transitions. [2023-11-19 08:05:54,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 167 transitions, 2057 flow [2023-11-19 08:05:54,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 167 transitions, 2013 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:54,239 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 1274 flow [2023-11-19 08:05:54,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1274, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2023-11-19 08:05:54,240 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 57 predicate places. [2023-11-19 08:05:54,241 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 1274 flow [2023-11-19 08:05:54,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 08:05:54,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:54,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:54,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:05:54,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:54,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1285232320, now seen corresponding path program 1 times [2023-11-19 08:05:54,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:54,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874059683] [2023-11-19 08:05:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:54,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:55,072 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 08:05:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874059683] [2023-11-19 08:05:55,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874059683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:55,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:55,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963632682] [2023-11-19 08:05:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:55,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 208 [2023-11-19 08:05:55,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 1274 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 08:05:55,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:55,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 208 [2023-11-19 08:05:55,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:55,825 INFO L124 PetriNetUnfolderBase]: 1285/2114 cut-off events. [2023-11-19 08:05:55,826 INFO L125 PetriNetUnfolderBase]: For 30819/30839 co-relation queries the response was YES. [2023-11-19 08:05:55,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14353 conditions, 2114 events. 1285/2114 cut-off events. For 30819/30839 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10640 event pairs, 512 based on Foata normal form. 59/2167 useless extension candidates. Maximal degree in co-relation 14305. Up to 1765 conditions per place. [2023-11-19 08:05:55,846 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 80 selfloop transitions, 30 changer transitions 15/127 dead transitions. [2023-11-19 08:05:55,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 127 transitions, 1912 flow [2023-11-19 08:05:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 689 transitions. [2023-11-19 08:05:55,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2023-11-19 08:05:55,850 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 689 transitions. [2023-11-19 08:05:55,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 689 transitions. [2023-11-19 08:05:55,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:55,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 689 transitions. [2023-11-19 08:05:55,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.42857142857143) internal successors, (689), 7 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 08:05:55,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:55,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 08:05:55,858 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 1274 flow. Second operand 7 states and 689 transitions. [2023-11-19 08:05:55,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 127 transitions, 1912 flow [2023-11-19 08:05:55,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 1720 flow, removed 83 selfloop flow, removed 6 redundant places. [2023-11-19 08:05:55,968 INFO L231 Difference]: Finished difference. Result has 92 places, 95 transitions, 1291 flow [2023-11-19 08:05:55,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1291, PETRI_PLACES=92, PETRI_TRANSITIONS=95} [2023-11-19 08:05:55,970 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 57 predicate places. [2023-11-19 08:05:55,970 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 1291 flow [2023-11-19 08:05:55,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 08:05:55,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:55,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:55,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:05:55,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:55,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1429386961, now seen corresponding path program 1 times [2023-11-19 08:05:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:55,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277538027] [2023-11-19 08:05:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:55,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:57,137 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 08:05:57,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:57,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277538027] [2023-11-19 08:05:57,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277538027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:57,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:57,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:05:57,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646695794] [2023-11-19 08:05:57,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:05:57,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:05:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:05:57,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 208 [2023-11-19 08:05:57,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 1291 flow. Second operand has 10 states, 10 states have (on average 88.6) internal successors, (886), 10 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 08:05:57,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:57,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 208 [2023-11-19 08:05:57,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:58,239 INFO L124 PetriNetUnfolderBase]: 1457/2437 cut-off events. [2023-11-19 08:05:58,239 INFO L125 PetriNetUnfolderBase]: For 29159/29181 co-relation queries the response was YES. [2023-11-19 08:05:58,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15367 conditions, 2437 events. 1457/2437 cut-off events. For 29159/29181 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13068 event pairs, 213 based on Foata normal form. 93/2521 useless extension candidates. Maximal degree in co-relation 15318. Up to 1407 conditions per place. [2023-11-19 08:05:58,259 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 81 selfloop transitions, 70 changer transitions 30/183 dead transitions. [2023-11-19 08:05:58,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 2505 flow [2023-11-19 08:05:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:05:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 08:05:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1247 transitions. [2023-11-19 08:05:58,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46116863905325445 [2023-11-19 08:05:58,265 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1247 transitions. [2023-11-19 08:05:58,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1247 transitions. [2023-11-19 08:05:58,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:58,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1247 transitions. [2023-11-19 08:05:58,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.92307692307692) internal successors, (1247), 13 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 08:05:58,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 208.0) internal successors, (2912), 14 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 08:05:58,276 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 208.0) internal successors, (2912), 14 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 08:05:58,277 INFO L175 Difference]: Start difference. First operand has 92 places, 95 transitions, 1291 flow. Second operand 13 states and 1247 transitions. [2023-11-19 08:05:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 2505 flow [2023-11-19 08:05:58,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 2419 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:58,363 INFO L231 Difference]: Finished difference. Result has 103 places, 109 transitions, 1676 flow [2023-11-19 08:05:58,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1676, PETRI_PLACES=103, PETRI_TRANSITIONS=109} [2023-11-19 08:05:58,364 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 68 predicate places. [2023-11-19 08:05:58,364 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 109 transitions, 1676 flow [2023-11-19 08:05:58,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.6) internal successors, (886), 10 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 08:05:58,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:58,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:58,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:05:58,366 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:05:58,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1484791494, now seen corresponding path program 1 times [2023-11-19 08:05:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934336689] [2023-11-19 08:05:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:00,237 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 08:06:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:00,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934336689] [2023-11-19 08:06:00,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934336689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:00,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:06:00,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801141503] [2023-11-19 08:06:00,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:00,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:06:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:00,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:06:00,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:00,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 208 [2023-11-19 08:06:00,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 109 transitions, 1676 flow. Second operand has 9 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 0 states 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 08:06:00,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:00,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 208 [2023-11-19 08:06:00,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:01,840 INFO L124 PetriNetUnfolderBase]: 1757/3046 cut-off events. [2023-11-19 08:06:01,840 INFO L125 PetriNetUnfolderBase]: For 42383/42439 co-relation queries the response was YES. [2023-11-19 08:06:01,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19856 conditions, 3046 events. 1757/3046 cut-off events. For 42383/42439 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18153 event pairs, 215 based on Foata normal form. 136/3170 useless extension candidates. Maximal degree in co-relation 19804. Up to 1324 conditions per place. [2023-11-19 08:06:01,866 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 114 selfloop transitions, 64 changer transitions 44/224 dead transitions. [2023-11-19 08:06:01,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 3517 flow [2023-11-19 08:06:01,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:06:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 08:06:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1334 transitions. [2023-11-19 08:06:01,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581043956043956 [2023-11-19 08:06:01,870 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1334 transitions. [2023-11-19 08:06:01,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1334 transitions. [2023-11-19 08:06:01,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:01,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1334 transitions. [2023-11-19 08:06:01,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.28571428571429) internal successors, (1334), 14 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states 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 08:06:01,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 208.0) internal successors, (3120), 15 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states 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 08:06:01,881 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 208.0) internal successors, (3120), 15 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states 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 08:06:01,881 INFO L175 Difference]: Start difference. First operand has 103 places, 109 transitions, 1676 flow. Second operand 14 states and 1334 transitions. [2023-11-19 08:06:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 224 transitions, 3517 flow [2023-11-19 08:06:02,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 224 transitions, 3305 flow, removed 81 selfloop flow, removed 6 redundant places. [2023-11-19 08:06:02,053 INFO L231 Difference]: Finished difference. Result has 116 places, 130 transitions, 2194 flow [2023-11-19 08:06:02,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2194, PETRI_PLACES=116, PETRI_TRANSITIONS=130} [2023-11-19 08:06:02,054 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 81 predicate places. [2023-11-19 08:06:02,054 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 130 transitions, 2194 flow [2023-11-19 08:06:02,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 0 states 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 08:06:02,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:02,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:06:02,055 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:06:02,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -821109734, now seen corresponding path program 2 times [2023-11-19 08:06:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719911320] [2023-11-19 08:06:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:03,470 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 08:06:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:03,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719911320] [2023-11-19 08:06:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719911320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:03,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:06:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683357028] [2023-11-19 08:06:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:06:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:06:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:06:03,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 208 [2023-11-19 08:06:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 130 transitions, 2194 flow. Second operand has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 08:06:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 208 [2023-11-19 08:06:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:04,952 INFO L124 PetriNetUnfolderBase]: 1782/3122 cut-off events. [2023-11-19 08:06:04,952 INFO L125 PetriNetUnfolderBase]: For 54500/54552 co-relation queries the response was YES. [2023-11-19 08:06:04,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21655 conditions, 3122 events. 1782/3122 cut-off events. For 54500/54552 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 19215 event pairs, 421 based on Foata normal form. 87/3200 useless extension candidates. Maximal degree in co-relation 21598. Up to 1846 conditions per place. [2023-11-19 08:06:04,982 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 108 selfloop transitions, 80 changer transitions 41/231 dead transitions. [2023-11-19 08:06:04,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 231 transitions, 4050 flow [2023-11-19 08:06:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:06:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 08:06:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1225 transitions. [2023-11-19 08:06:04,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530325443786982 [2023-11-19 08:06:04,985 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1225 transitions. [2023-11-19 08:06:04,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1225 transitions. [2023-11-19 08:06:04,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:04,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1225 transitions. [2023-11-19 08:06:04,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.23076923076923) internal successors, (1225), 13 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 08:06:04,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 208.0) internal successors, (2912), 14 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 08:06:04,995 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 208.0) internal successors, (2912), 14 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 08:06:04,995 INFO L175 Difference]: Start difference. First operand has 116 places, 130 transitions, 2194 flow. Second operand 13 states and 1225 transitions. [2023-11-19 08:06:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 231 transitions, 4050 flow [2023-11-19 08:06:05,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 231 transitions, 3725 flow, removed 154 selfloop flow, removed 6 redundant places. [2023-11-19 08:06:05,225 INFO L231 Difference]: Finished difference. Result has 129 places, 159 transitions, 2916 flow [2023-11-19 08:06:05,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2916, PETRI_PLACES=129, PETRI_TRANSITIONS=159} [2023-11-19 08:06:05,226 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 94 predicate places. [2023-11-19 08:06:05,226 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 159 transitions, 2916 flow [2023-11-19 08:06:05,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 08:06:05,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:05,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:05,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 08:06:05,228 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:06:05,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash 337375729, now seen corresponding path program 1 times [2023-11-19 08:06:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:05,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176050275] [2023-11-19 08:06:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat