./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.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_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/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_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/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_dce2268f-5cfe-469d-9564-96c5bf0d83ca/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 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:04,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:04,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:03:04,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:04,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:04,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:04,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:04,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:04,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:04,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:04,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:04,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:04,650 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:04,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:04,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:04,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:04,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:04,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:04,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:04,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:04,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:04,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:04,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:04,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:04,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:04,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:04,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:04,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:04,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:04,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:04,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:04,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:04,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:04,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:04,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:04,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:04,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:04,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:04,683 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:04,683 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_dce2268f-5cfe-469d-9564-96c5bf0d83ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 [2023-11-19 08:03:05,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:05,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:05,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:05,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:05,064 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:05,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2023-11-19 08:03:08,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:08,522 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:08,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2023-11-19 08:03:08,555 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/data/d102c698e/d2d87cde077b4872beabb7f63b58d43f/FLAG998ed868f [2023-11-19 08:03:08,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/data/d102c698e/d2d87cde077b4872beabb7f63b58d43f [2023-11-19 08:03:08,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:08,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:08,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:08,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:08,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:08,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:08" (1/1) ... [2023-11-19 08:03:08,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278b6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:08, skipping insertion in model container [2023-11-19 08:03:08,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:08" (1/1) ... [2023-11-19 08:03:08,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:08,917 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_dce2268f-5cfe-469d-9564-96c5bf0d83ca/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2023-11-19 08:03:09,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:09,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:09,301 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_dce2268f-5cfe-469d-9564-96c5bf0d83ca/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2023-11-19 08:03:09,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:09,442 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:09,442 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:09,451 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:09,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09 WrapperNode [2023-11-19 08:03:09,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:09,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:09,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:09,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:09,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,556 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2023-11-19 08:03:09,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:09,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:09,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:09,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:09,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:09,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:09,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:09,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:09,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:09,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:09,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce2268f-5cfe-469d-9564-96c5bf0d83ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:03:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:03:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:03:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:03:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:03:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:03:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:03:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 08:03:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 08:03:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:03:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:09,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:09,782 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 08:03:09,935 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:09,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:10,333 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:10,547 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:10,547 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:03:10,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:10 BoogieIcfgContainer [2023-11-19 08:03:10,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:10,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:10,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:10,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:10,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:08" (1/3) ... [2023-11-19 08:03:10,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53eba9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:10, skipping insertion in model container [2023-11-19 08:03:10,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09" (2/3) ... [2023-11-19 08:03:10,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53eba9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:10, skipping insertion in model container [2023-11-19 08:03:10,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:10" (3/3) ... [2023-11-19 08:03:10,563 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.opt_pso.opt_rmo.opt.i [2023-11-19 08:03:10,573 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:03:10,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:10,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:03:10,583 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:10,664 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:03:10,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 280 flow [2023-11-19 08:03:10,821 INFO L124 PetriNetUnfolderBase]: 2/128 cut-off events. [2023-11-19 08:03:10,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:10,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-19 08:03:10,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 280 flow [2023-11-19 08:03:10,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2023-11-19 08:03:10,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:10,858 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 268 flow [2023-11-19 08:03:10,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 268 flow [2023-11-19 08:03:10,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 268 flow [2023-11-19 08:03:10,897 INFO L124 PetriNetUnfolderBase]: 2/128 cut-off events. [2023-11-19 08:03:10,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:10,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-19 08:03:10,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 3376 [2023-11-19 08:03:16,936 INFO L134 LiptonReduction]: Checked pairs total: 8324 [2023-11-19 08:03:16,937 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-19 08:03:16,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:16,986 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;@70871164, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:16,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 08:03:17,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:17,004 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-19 08:03:17,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:17,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:17,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:17,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:17,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -990181768, now seen corresponding path program 1 times [2023-11-19 08:03:17,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:17,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081238910] [2023-11-19 08:03:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:17,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:17,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081238910] [2023-11-19 08:03:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081238910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:17,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:17,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158250393] [2023-11-19 08:03:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:17,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:17,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 244 [2023-11-19 08:03:17,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 08:03:17,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:17,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 244 [2023-11-19 08:03:17,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:18,468 INFO L124 PetriNetUnfolderBase]: 2855/4139 cut-off events. [2023-11-19 08:03:18,469 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 08:03:18,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8215 conditions, 4139 events. 2855/4139 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21536 event pairs, 785 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 8203. Up to 3103 conditions per place. [2023-11-19 08:03:18,549 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 33 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2023-11-19 08:03:18,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 173 flow [2023-11-19 08:03:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-11-19 08:03:18,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314207650273224 [2023-11-19 08:03:18,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-11-19 08:03:18,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-11-19 08:03:18,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:18,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-11-19 08:03:18,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 08:03:18,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 08:03:18,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 08:03:18,586 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 3 states and 389 transitions. [2023-11-19 08:03:18,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 173 flow [2023-11-19 08:03:18,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:03:18,593 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-11-19 08:03:18,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-11-19 08:03:18,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-19 08:03:18,600 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-11-19 08:03:18,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 08:03:18,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:18,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:18,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:18,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:18,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash 769567908, now seen corresponding path program 1 times [2023-11-19 08:03:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94235298] [2023-11-19 08:03:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:19,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:19,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94235298] [2023-11-19 08:03:19,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94235298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:19,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968304916] [2023-11-19 08:03:19,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:19,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:19,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 244 [2023-11-19 08:03:19,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 08:03:19,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:19,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 244 [2023-11-19 08:03:19,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:21,575 INFO L124 PetriNetUnfolderBase]: 8613/11849 cut-off events. [2023-11-19 08:03:21,576 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2023-11-19 08:03:21,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24501 conditions, 11849 events. 8613/11849 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 59354 event pairs, 1031 based on Foata normal form. 304/12149 useless extension candidates. Maximal degree in co-relation 24491. Up to 8565 conditions per place. [2023-11-19 08:03:21,682 INFO L140 encePairwiseOnDemand]: 231/244 looper letters, 44 selfloop transitions, 14 changer transitions 0/59 dead transitions. [2023-11-19 08:03:21,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 59 transitions, 254 flow [2023-11-19 08:03:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2023-11-19 08:03:21,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2023-11-19 08:03:21,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 476 transitions. [2023-11-19 08:03:21,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 476 transitions. [2023-11-19 08:03:21,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:21,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 476 transitions. [2023-11-19 08:03:21,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:21,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:21,695 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:21,695 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 4 states and 476 transitions. [2023-11-19 08:03:21,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 59 transitions, 254 flow [2023-11-19 08:03:21,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:21,701 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 170 flow [2023-11-19 08:03:21,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-19 08:03:21,702 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-19 08:03:21,702 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 170 flow [2023-11-19 08:03:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 08:03:21,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:21,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:21,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:03:21,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:21,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:21,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1913200253, now seen corresponding path program 1 times [2023-11-19 08:03:21,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184884793] [2023-11-19 08:03:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,435 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 08:03:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184884793] [2023-11-19 08:03:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184884793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:22,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610762873] [2023-11-19 08:03:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:22,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 244 [2023-11-19 08:03:22,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 08:03:22,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:22,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 244 [2023-11-19 08:03:22,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:24,575 INFO L124 PetriNetUnfolderBase]: 8490/11915 cut-off events. [2023-11-19 08:03:24,576 INFO L125 PetriNetUnfolderBase]: For 5689/5689 co-relation queries the response was YES. [2023-11-19 08:03:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34398 conditions, 11915 events. 8490/11915 cut-off events. For 5689/5689 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 63370 event pairs, 1317 based on Foata normal form. 56/11971 useless extension candidates. Maximal degree in co-relation 34385. Up to 8253 conditions per place. [2023-11-19 08:03:24,684 INFO L140 encePairwiseOnDemand]: 231/244 looper letters, 63 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2023-11-19 08:03:24,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 87 transitions, 526 flow [2023-11-19 08:03:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2023-11-19 08:03:24,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959016393442623 [2023-11-19 08:03:24,688 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2023-11-19 08:03:24,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2023-11-19 08:03:24,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:24,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2023-11-19 08:03:24,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 08:03:24,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:24,694 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:24,695 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 170 flow. Second operand 4 states and 484 transitions. [2023-11-19 08:03:24,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 87 transitions, 526 flow [2023-11-19 08:03:24,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 87 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:03:24,703 INFO L231 Difference]: Finished difference. Result has 48 places, 58 transitions, 386 flow [2023-11-19 08:03:24,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=48, PETRI_TRANSITIONS=58} [2023-11-19 08:03:24,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-19 08:03:24,708 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 58 transitions, 386 flow [2023-11-19 08:03:24,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 08:03:24,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:24,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:24,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:03:24,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:24,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 818458230, now seen corresponding path program 1 times [2023-11-19 08:03:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:24,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327571540] [2023-11-19 08:03:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,303 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 08:03:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327571540] [2023-11-19 08:03:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327571540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:25,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531171460] [2023-11-19 08:03:25,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:25,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 244 [2023-11-19 08:03:25,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 58 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 08:03:25,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:25,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 244 [2023-11-19 08:03:25,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:27,165 INFO L124 PetriNetUnfolderBase]: 8021/11082 cut-off events. [2023-11-19 08:03:27,165 INFO L125 PetriNetUnfolderBase]: For 17615/17615 co-relation queries the response was YES. [2023-11-19 08:03:27,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40344 conditions, 11082 events. 8021/11082 cut-off events. For 17615/17615 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 55371 event pairs, 1797 based on Foata normal form. 112/11192 useless extension candidates. Maximal degree in co-relation 40326. Up to 5787 conditions per place. [2023-11-19 08:03:27,274 INFO L140 encePairwiseOnDemand]: 232/244 looper letters, 69 selfloop transitions, 20 changer transitions 0/90 dead transitions. [2023-11-19 08:03:27,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 90 transitions, 754 flow [2023-11-19 08:03:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2023-11-19 08:03:27,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48155737704918034 [2023-11-19 08:03:27,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2023-11-19 08:03:27,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2023-11-19 08:03:27,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:27,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2023-11-19 08:03:27,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 08:03:27,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:27,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:27,284 INFO L175 Difference]: Start difference. First operand has 48 places, 58 transitions, 386 flow. Second operand 4 states and 470 transitions. [2023-11-19 08:03:27,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 90 transitions, 754 flow [2023-11-19 08:03:27,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 750 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 08:03:27,316 INFO L231 Difference]: Finished difference. Result has 54 places, 70 transitions, 604 flow [2023-11-19 08:03:27,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=604, PETRI_PLACES=54, PETRI_TRANSITIONS=70} [2023-11-19 08:03:27,318 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-19 08:03:27,319 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 70 transitions, 604 flow [2023-11-19 08:03:27,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 08:03:27,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:27,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:27,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:03:27,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:27,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -541667520, now seen corresponding path program 1 times [2023-11-19 08:03:27,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:27,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933533694] [2023-11-19 08:03:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:27,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,430 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 08:03:28,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933533694] [2023-11-19 08:03:28,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933533694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:28,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:28,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:28,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078010601] [2023-11-19 08:03:28,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:28,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:28,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:28,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 08:03:28,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 70 transitions, 604 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:03:28,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:28,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 08:03:28,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:30,547 INFO L124 PetriNetUnfolderBase]: 10401/14234 cut-off events. [2023-11-19 08:03:30,547 INFO L125 PetriNetUnfolderBase]: For 31880/31880 co-relation queries the response was YES. [2023-11-19 08:03:30,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56825 conditions, 14234 events. 10401/14234 cut-off events. For 31880/31880 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 70477 event pairs, 1215 based on Foata normal form. 40/14274 useless extension candidates. Maximal degree in co-relation 56802. Up to 9869 conditions per place. [2023-11-19 08:03:30,702 INFO L140 encePairwiseOnDemand]: 230/244 looper letters, 75 selfloop transitions, 54 changer transitions 0/129 dead transitions. [2023-11-19 08:03:30,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 129 transitions, 1274 flow [2023-11-19 08:03:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 480 transitions. [2023-11-19 08:03:30,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2023-11-19 08:03:30,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 480 transitions. [2023-11-19 08:03:30,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 480 transitions. [2023-11-19 08:03:30,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:30,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 480 transitions. [2023-11-19 08:03:30,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:30,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:30,713 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:30,713 INFO L175 Difference]: Start difference. First operand has 54 places, 70 transitions, 604 flow. Second operand 4 states and 480 transitions. [2023-11-19 08:03:30,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 129 transitions, 1274 flow [2023-11-19 08:03:30,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 129 transitions, 1256 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:30,900 INFO L231 Difference]: Finished difference. Result has 58 places, 99 transitions, 1138 flow [2023-11-19 08:03:30,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1138, PETRI_PLACES=58, PETRI_TRANSITIONS=99} [2023-11-19 08:03:30,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-11-19 08:03:30,903 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 99 transitions, 1138 flow [2023-11-19 08:03:30,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:03:30,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:30,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:30,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:03:30,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:30,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 384944611, now seen corresponding path program 1 times [2023-11-19 08:03:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:30,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066439311] [2023-11-19 08:03:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,467 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 08:03:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066439311] [2023-11-19 08:03:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066439311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:31,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335203752] [2023-11-19 08:03:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:31,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:31,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 244 [2023-11-19 08:03:31,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 99 transitions, 1138 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 08:03:31,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:31,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 244 [2023-11-19 08:03:31,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:33,312 INFO L124 PetriNetUnfolderBase]: 8094/11760 cut-off events. [2023-11-19 08:03:33,312 INFO L125 PetriNetUnfolderBase]: For 48779/49294 co-relation queries the response was YES. [2023-11-19 08:03:33,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58234 conditions, 11760 events. 8094/11760 cut-off events. For 48779/49294 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 66040 event pairs, 1333 based on Foata normal form. 370/11929 useless extension candidates. Maximal degree in co-relation 58208. Up to 7983 conditions per place. [2023-11-19 08:03:33,442 INFO L140 encePairwiseOnDemand]: 237/244 looper letters, 84 selfloop transitions, 28 changer transitions 0/143 dead transitions. [2023-11-19 08:03:33,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 1765 flow [2023-11-19 08:03:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-11-19 08:03:33,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276639344262295 [2023-11-19 08:03:33,446 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-11-19 08:03:33,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-11-19 08:03:33,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:33,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-11-19 08:03:33,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:33,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:33,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 08:03:33,453 INFO L175 Difference]: Start difference. First operand has 58 places, 99 transitions, 1138 flow. Second operand 4 states and 515 transitions. [2023-11-19 08:03:33,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 1765 flow [2023-11-19 08:03:33,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 143 transitions, 1765 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:03:33,613 INFO L231 Difference]: Finished difference. Result has 63 places, 113 transitions, 1446 flow [2023-11-19 08:03:33,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1446, PETRI_PLACES=63, PETRI_TRANSITIONS=113} [2023-11-19 08:03:33,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-11-19 08:03:33,617 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 113 transitions, 1446 flow [2023-11-19 08:03:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 08:03:33,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:33,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:03:33,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:33,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:33,618 INFO L85 PathProgramCache]: Analyzing trace with hash 388230766, now seen corresponding path program 1 times [2023-11-19 08:03:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798942525] [2023-11-19 08:03:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:34,510 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 08:03:34,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:34,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798942525] [2023-11-19 08:03:34,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798942525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:34,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:34,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710499212] [2023-11-19 08:03:34,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:34,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:34,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:34,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 244 [2023-11-19 08:03:34,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 113 transitions, 1446 flow. Second operand has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 08:03:34,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:34,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 244 [2023-11-19 08:03:34,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:36,349 INFO L124 PetriNetUnfolderBase]: 11353/15500 cut-off events. [2023-11-19 08:03:36,350 INFO L125 PetriNetUnfolderBase]: For 72112/72112 co-relation queries the response was YES. [2023-11-19 08:03:36,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80309 conditions, 15500 events. 11353/15500 cut-off events. For 72112/72112 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 77453 event pairs, 1703 based on Foata normal form. 80/15580 useless extension candidates. Maximal degree in co-relation 80279. Up to 11891 conditions per place. [2023-11-19 08:03:36,652 INFO L140 encePairwiseOnDemand]: 233/244 looper letters, 172 selfloop transitions, 49 changer transitions 0/221 dead transitions. [2023-11-19 08:03:36,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 221 transitions, 3074 flow [2023-11-19 08:03:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:03:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-11-19 08:03:36,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48360655737704916 [2023-11-19 08:03:36,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-11-19 08:03:36,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-11-19 08:03:36,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:36,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-11-19 08:03:36,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 08:03:36,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:03:36,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:03:36,674 INFO L175 Difference]: Start difference. First operand has 63 places, 113 transitions, 1446 flow. Second operand 5 states and 590 transitions. [2023-11-19 08:03:36,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 221 transitions, 3074 flow [2023-11-19 08:03:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 221 transitions, 3058 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:03:36,870 INFO L231 Difference]: Finished difference. Result has 68 places, 146 transitions, 2113 flow [2023-11-19 08:03:36,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2113, PETRI_PLACES=68, PETRI_TRANSITIONS=146} [2023-11-19 08:03:36,871 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-19 08:03:36,871 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 146 transitions, 2113 flow [2023-11-19 08:03:36,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 08:03:36,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:36,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:36,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:03:36,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:36,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash -951664685, now seen corresponding path program 1 times [2023-11-19 08:03:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282195209] [2023-11-19 08:03:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,515 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 08:03:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:37,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282195209] [2023-11-19 08:03:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282195209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689098989] [2023-11-19 08:03:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:37,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:37,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-11-19 08:03:37,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 146 transitions, 2113 flow. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:37,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:37,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-11-19 08:03:37,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:40,009 INFO L124 PetriNetUnfolderBase]: 9853/14090 cut-off events. [2023-11-19 08:03:40,010 INFO L125 PetriNetUnfolderBase]: For 99632/101582 co-relation queries the response was YES. [2023-11-19 08:03:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87182 conditions, 14090 events. 9853/14090 cut-off events. For 99632/101582 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 80194 event pairs, 1340 based on Foata normal form. 755/14614 useless extension candidates. Maximal degree in co-relation 87149. Up to 9390 conditions per place. [2023-11-19 08:03:40,177 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 128 selfloop transitions, 50 changer transitions 0/213 dead transitions. [2023-11-19 08:03:40,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 213 transitions, 3266 flow [2023-11-19 08:03:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:03:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2023-11-19 08:03:40,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131147540983606 [2023-11-19 08:03:40,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions. [2023-11-19 08:03:40,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions. [2023-11-19 08:03:40,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:40,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions. [2023-11-19 08:03:40,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:03:40,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:03:40,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:03:40,194 INFO L175 Difference]: Start difference. First operand has 68 places, 146 transitions, 2113 flow. Second operand 5 states and 626 transitions. [2023-11-19 08:03:40,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 213 transitions, 3266 flow [2023-11-19 08:03:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 213 transitions, 3258 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:03:40,456 INFO L231 Difference]: Finished difference. Result has 72 places, 163 transitions, 2559 flow [2023-11-19 08:03:40,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2559, PETRI_PLACES=72, PETRI_TRANSITIONS=163} [2023-11-19 08:03:40,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-11-19 08:03:40,460 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 163 transitions, 2559 flow [2023-11-19 08:03:40,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:40,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:40,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:03:40,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:40,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash -961856555, now seen corresponding path program 2 times [2023-11-19 08:03:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:40,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362799003] [2023-11-19 08:03:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:41,480 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 08:03:41,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362799003] [2023-11-19 08:03:41,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362799003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:41,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:41,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:41,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574436414] [2023-11-19 08:03:41,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:41,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:41,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:41,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 244 [2023-11-19 08:03:41,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 163 transitions, 2559 flow. Second operand has 7 states, 7 states have (on average 102.28571428571429) internal successors, (716), 7 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 08:03:41,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:41,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 244 [2023-11-19 08:03:41,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:44,409 INFO L124 PetriNetUnfolderBase]: 14641/19934 cut-off events. [2023-11-19 08:03:44,409 INFO L125 PetriNetUnfolderBase]: For 124942/124942 co-relation queries the response was YES. [2023-11-19 08:03:44,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122307 conditions, 19934 events. 14641/19934 cut-off events. For 124942/124942 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 103620 event pairs, 694 based on Foata normal form. 72/20006 useless extension candidates. Maximal degree in co-relation 122272. Up to 10795 conditions per place. [2023-11-19 08:03:44,546 INFO L140 encePairwiseOnDemand]: 230/244 looper letters, 171 selfloop transitions, 140 changer transitions 0/311 dead transitions. [2023-11-19 08:03:44,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 311 transitions, 4870 flow [2023-11-19 08:03:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:03:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 811 transitions. [2023-11-19 08:03:44,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474824355971897 [2023-11-19 08:03:44,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 811 transitions. [2023-11-19 08:03:44,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 811 transitions. [2023-11-19 08:03:44,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:44,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 811 transitions. [2023-11-19 08:03:44,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.85714285714286) internal successors, (811), 7 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 08:03:44,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 08:03:44,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 08:03:44,559 INFO L175 Difference]: Start difference. First operand has 72 places, 163 transitions, 2559 flow. Second operand 7 states and 811 transitions. [2023-11-19 08:03:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 311 transitions, 4870 flow [2023-11-19 08:03:44,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 311 transitions, 4776 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 08:03:44,976 INFO L231 Difference]: Finished difference. Result has 80 places, 234 transitions, 4245 flow [2023-11-19 08:03:44,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4245, PETRI_PLACES=80, PETRI_TRANSITIONS=234} [2023-11-19 08:03:44,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-11-19 08:03:44,978 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 234 transitions, 4245 flow [2023-11-19 08:03:44,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.28571428571429) internal successors, (716), 7 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 08:03:44,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:44,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:03:44,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:44,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1252610043, now seen corresponding path program 3 times [2023-11-19 08:03:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913865243] [2023-11-19 08:03:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:45,484 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 08:03:45,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:45,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913865243] [2023-11-19 08:03:45,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913865243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:45,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:45,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:45,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684287126] [2023-11-19 08:03:45,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:45,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:45,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:45,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 244 [2023-11-19 08:03:45,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 234 transitions, 4245 flow. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:45,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 244 [2023-11-19 08:03:45,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:48,608 INFO L124 PetriNetUnfolderBase]: 12348/17701 cut-off events. [2023-11-19 08:03:48,608 INFO L125 PetriNetUnfolderBase]: For 220152/223480 co-relation queries the response was YES. [2023-11-19 08:03:48,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131652 conditions, 17701 events. 12348/17701 cut-off events. For 220152/223480 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 105479 event pairs, 1497 based on Foata normal form. 1087/18436 useless extension candidates. Maximal degree in co-relation 131612. Up to 9607 conditions per place. [2023-11-19 08:03:48,798 INFO L140 encePairwiseOnDemand]: 237/244 looper letters, 144 selfloop transitions, 79 changer transitions 0/279 dead transitions. [2023-11-19 08:03:48,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 279 transitions, 5271 flow [2023-11-19 08:03:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:03:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 617 transitions. [2023-11-19 08:03:48,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057377049180328 [2023-11-19 08:03:48,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 617 transitions. [2023-11-19 08:03:48,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 617 transitions. [2023-11-19 08:03:48,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:48,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 617 transitions. [2023-11-19 08:03:48,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 08:03:48,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:03:48,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:03:48,809 INFO L175 Difference]: Start difference. First operand has 80 places, 234 transitions, 4245 flow. Second operand 5 states and 617 transitions. [2023-11-19 08:03:48,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 279 transitions, 5271 flow [2023-11-19 08:03:50,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 279 transitions, 5141 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-11-19 08:03:50,167 INFO L231 Difference]: Finished difference. Result has 84 places, 242 transitions, 4549 flow [2023-11-19 08:03:50,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4127, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4549, PETRI_PLACES=84, PETRI_TRANSITIONS=242} [2023-11-19 08:03:50,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2023-11-19 08:03:50,169 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 242 transitions, 4549 flow [2023-11-19 08:03:50,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:50,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:50,170 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 08:03:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:03:50,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:03:50,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -842747637, now seen corresponding path program 1 times [2023-11-19 08:03:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668878363] [2023-11-19 08:03:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:50,941 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 08:03:50,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668878363] [2023-11-19 08:03:50,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668878363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:50,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:50,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:03:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072089424] [2023-11-19 08:03:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:50,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:50,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:50,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-11-19 08:03:50,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 242 transitions, 4549 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 08:03:50,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:50,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-11-19 08:03:50,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand