./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:27,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:27,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:00:27,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:27,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:27,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:27,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:27,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:27,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:00:27,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:00:27,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:27,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:27,471 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:27,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:27,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:00:27,475 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:00:27,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:27,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:00:27,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:27,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:00:27,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:00:27,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:00:27,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:00:27,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:27,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:27,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:27,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:27,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:00:27,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:27,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:27,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:00:27,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:00:27,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:27,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:00:27,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:00:27,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:00:27,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:00:27,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:00:27,485 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:00:27,485 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_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 [2023-11-06 23:00:27,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:27,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:27,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:27,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:27,876 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:27,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-06 23:00:31,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:31,508 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:31,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-06 23:00:31,536 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/data/1a961fae5/fedceb72625549c0a349214ff4ca09f0/FLAGa2ba3b11b [2023-11-06 23:00:31,557 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/data/1a961fae5/fedceb72625549c0a349214ff4ca09f0 [2023-11-06 23:00:31,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:31,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:31,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:31,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:31,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:31,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:31,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2a4bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31, skipping insertion in model container [2023-11-06 23:00:31,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:31,643 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:31,862 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_7974f47b-0a03-4f15-8f44-76a969038233/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2023-11-06 23:00:31,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:31,896 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:31,931 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_7974f47b-0a03-4f15-8f44-76a969038233/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2023-11-06 23:00:31,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:31,972 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:31,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31 WrapperNode [2023-11-06 23:00:31,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:31,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:31,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:31,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:31,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,057 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 436 [2023-11-06 23:00:32,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:32,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:32,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:32,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:32,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:32,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:32,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:32,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:32,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (1/1) ... [2023-11-06 23:00:32,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7974f47b-0a03-4f15-8f44-76a969038233/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:00:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:00:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:00:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:00:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:00:32,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:00:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:00:32,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:00:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:00:32,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:00:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:00:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:00:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:00:32,273 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:00:32,496 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:32,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:33,504 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:33,532 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:33,535 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 23:00:33,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:33 BoogieIcfgContainer [2023-11-06 23:00:33,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:33,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:00:33,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:00:33,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:00:33,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:00:31" (1/3) ... [2023-11-06 23:00:33,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d437e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:33, skipping insertion in model container [2023-11-06 23:00:33,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:31" (2/3) ... [2023-11-06 23:00:33,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d437e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:33, skipping insertion in model container [2023-11-06 23:00:33,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:33" (3/3) ... [2023-11-06 23:00:33,548 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-11-06 23:00:33,559 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:00:33,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:00:33,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:00:33,573 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:00:33,726 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:00:33,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 564 transitions, 1149 flow [2023-11-06 23:00:34,204 INFO L124 PetriNetUnfolderBase]: 41/561 cut-off events. [2023-11-06 23:00:34,204 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:00:34,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 561 events. 41/561 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 705 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2023-11-06 23:00:34,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 533 places, 564 transitions, 1149 flow [2023-11-06 23:00:34,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 550 transitions, 1118 flow [2023-11-06 23:00:34,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:00:34,264 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 519 places, 550 transitions, 1118 flow [2023-11-06 23:00:34,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 519 places, 550 transitions, 1118 flow [2023-11-06 23:00:34,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 519 places, 550 transitions, 1118 flow [2023-11-06 23:00:34,542 INFO L124 PetriNetUnfolderBase]: 41/550 cut-off events. [2023-11-06 23:00:34,543 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:00:34,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 550 events. 41/550 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 704 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2023-11-06 23:00:34,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2023-11-06 23:01:01,784 INFO L134 LiptonReduction]: Checked pairs total: 24423 [2023-11-06 23:01:01,784 INFO L136 LiptonReduction]: Total number of compositions: 650 [2023-11-06 23:01:01,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:01:01,806 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=LoopsAndPotentialCycles, 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;@43b76ba2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:01:01,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 23:01:01,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:01:01,822 INFO L124 PetriNetUnfolderBase]: 10/41 cut-off events. [2023-11-06 23:01:01,822 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:01:01,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:01,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:01,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:01,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:01,837 INFO L85 PathProgramCache]: Analyzing trace with hash -430831474, now seen corresponding path program 1 times [2023-11-06 23:01:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:01,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881184276] [2023-11-06 23:01:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:02,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881184276] [2023-11-06 23:01:02,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881184276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:02,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:01:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765326877] [2023-11-06 23:01:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:02,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:01:02,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:01:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:01:02,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 528 out of 1214 [2023-11-06 23:01:02,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 540.5) internal successors, (1081), 2 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:02,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:02,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 528 of 1214 [2023-11-06 23:01:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:02,655 INFO L124 PetriNetUnfolderBase]: 699/1048 cut-off events. [2023-11-06 23:01:02,655 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 23:01:02,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3694 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-11-06 23:01:02,665 INFO L140 encePairwiseOnDemand]: 1213/1214 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-11-06 23:01:02,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-11-06 23:01:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:01:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:01:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1098 transitions. [2023-11-06 23:01:02,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222405271828664 [2023-11-06 23:01:02,699 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1098 transitions. [2023-11-06 23:01:02,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1098 transitions. [2023-11-06 23:01:02,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:02,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1098 transitions. [2023-11-06 23:01:02,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 549.0) internal successors, (1098), 2 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:02,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1214.0) internal successors, (3642), 3 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:02,736 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1214.0) internal successors, (3642), 3 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:02,738 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 1098 transitions. [2023-11-06 23:01:02,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-11-06 23:01:02,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 23:01:02,750 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-11-06 23:01:02,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-11-06 23:01:02,758 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-06 23:01:02,758 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-11-06 23:01:02,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 540.5) internal successors, (1081), 2 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:02,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:02,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:02,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:01:02,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:02,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1428415172, now seen corresponding path program 1 times [2023-11-06 23:01:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014948582] [2023-11-06 23:01:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:03,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014948582] [2023-11-06 23:01:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014948582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:03,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:03,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950864464] [2023-11-06 23:01:03,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:03,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:03,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 1214 [2023-11-06 23:01:03,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 530.3333333333334) internal successors, (1591), 3 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:03,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:03,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 1214 [2023-11-06 23:01:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:03,372 INFO L124 PetriNetUnfolderBase]: 789/1184 cut-off events. [2023-11-06 23:01:03,373 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:01:03,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4351 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-11-06 23:01:03,382 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-11-06 23:01:03,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-11-06 23:01:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1619 transitions. [2023-11-06 23:01:03,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44453596924766614 [2023-11-06 23:01:03,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1619 transitions. [2023-11-06 23:01:03,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1619 transitions. [2023-11-06 23:01:03,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:03,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1619 transitions. [2023-11-06 23:01:03,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 539.6666666666666) internal successors, (1619), 3 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:03,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:03,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:03,412 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1619 transitions. [2023-11-06 23:01:03,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-11-06 23:01:03,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:01:03,415 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-11-06 23:01:03,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-11-06 23:01:03,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-06 23:01:03,417 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-11-06 23:01:03,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 530.3333333333334) internal successors, (1591), 3 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:03,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:03,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:03,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:01:03,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:03,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:03,420 INFO L85 PathProgramCache]: Analyzing trace with hash -993574282, now seen corresponding path program 1 times [2023-11-06 23:01:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:03,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778263508] [2023-11-06 23:01:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:03,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778263508] [2023-11-06 23:01:03,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778263508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:03,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:03,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:01:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22027851] [2023-11-06 23:01:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:03,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:03,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 23:01:03,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 517.6666666666666) internal successors, (1553), 3 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:03,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:03,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 23:01:03,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:04,154 INFO L124 PetriNetUnfolderBase]: 789/1185 cut-off events. [2023-11-06 23:01:04,154 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-06 23:01:04,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4301 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-11-06 23:01:04,165 INFO L140 encePairwiseOnDemand]: 1211/1214 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 23:01:04,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-11-06 23:01:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1567 transitions. [2023-11-06 23:01:04,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302580999450851 [2023-11-06 23:01:04,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1567 transitions. [2023-11-06 23:01:04,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1567 transitions. [2023-11-06 23:01:04,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:04,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1567 transitions. [2023-11-06 23:01:04,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 522.3333333333334) internal successors, (1567), 3 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,198 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1567 transitions. [2023-11-06 23:01:04,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-11-06 23:01:04,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:04,205 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-11-06 23:01:04,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-11-06 23:01:04,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-06 23:01:04,207 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-11-06 23:01:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 517.6666666666666) internal successors, (1553), 3 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:04,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:01:04,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:04,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1664789365, now seen corresponding path program 1 times [2023-11-06 23:01:04,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:04,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167235413] [2023-11-06 23:01:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167235413] [2023-11-06 23:01:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167235413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:04,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:04,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037596984] [2023-11-06 23:01:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:04,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:04,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 23:01:04,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 515.5) internal successors, (2062), 4 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:04,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 23:01:04,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:05,043 INFO L124 PetriNetUnfolderBase]: 789/1186 cut-off events. [2023-11-06 23:01:05,044 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-06 23:01:05,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1184 conditions per place. [2023-11-06 23:01:05,053 INFO L140 encePairwiseOnDemand]: 1209/1214 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-11-06 23:01:05,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-11-06 23:01:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:01:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2076 transitions. [2023-11-06 23:01:05,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42751235584843494 [2023-11-06 23:01:05,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2076 transitions. [2023-11-06 23:01:05,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2076 transitions. [2023-11-06 23:01:05,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:05,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2076 transitions. [2023-11-06 23:01:05,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,095 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 2076 transitions. [2023-11-06 23:01:05,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-11-06 23:01:05,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:05,102 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 126 flow [2023-11-06 23:01:05,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-06 23:01:05,104 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-06 23:01:05,105 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 126 flow [2023-11-06 23:01:05,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 515.5) internal successors, (2062), 4 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:05,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:05,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:01:05,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:05,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash -752942504, now seen corresponding path program 1 times [2023-11-06 23:01:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:05,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818049456] [2023-11-06 23:01:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:05,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:01:05,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818049456] [2023-11-06 23:01:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818049456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605371727] [2023-11-06 23:01:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:05,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:05,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:05,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 23:01:05,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 515.75) internal successors, (2063), 4 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:05,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 23:01:05,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:05,899 INFO L124 PetriNetUnfolderBase]: 789/1187 cut-off events. [2023-11-06 23:01:05,899 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-06 23:01:05,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1187 events. 789/1187 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2679. Up to 1185 conditions per place. [2023-11-06 23:01:05,911 INFO L140 encePairwiseOnDemand]: 1209/1214 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-11-06 23:01:05,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 218 flow [2023-11-06 23:01:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:01:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2076 transitions. [2023-11-06 23:01:05,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42751235584843494 [2023-11-06 23:01:05,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2076 transitions. [2023-11-06 23:01:05,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2076 transitions. [2023-11-06 23:01:05,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:05,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2076 transitions. [2023-11-06 23:01:05,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,954 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 126 flow. Second operand 4 states and 2076 transitions. [2023-11-06 23:01:05,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 218 flow [2023-11-06 23:01:05,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:05,959 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 143 flow [2023-11-06 23:01:05,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-06 23:01:05,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-06 23:01:05,961 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 143 flow [2023-11-06 23:01:05,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 515.75) internal successors, (2063), 4 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:05,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:05,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:01:05,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:05,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1191679969, now seen corresponding path program 1 times [2023-11-06 23:01:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626072858] [2023-11-06 23:01:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:01:06,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626072858] [2023-11-06 23:01:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626072858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980475614] [2023-11-06 23:01:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:06,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 23:01:06,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:06,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:06,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 23:01:06,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:06,665 INFO L124 PetriNetUnfolderBase]: 789/1188 cut-off events. [2023-11-06 23:01:06,666 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 23:01:06,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 1188 events. 789/1188 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2689. Up to 1187 conditions per place. [2023-11-06 23:01:06,677 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-11-06 23:01:06,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 237 flow [2023-11-06 23:01:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:01:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2075 transitions. [2023-11-06 23:01:06,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730642504118616 [2023-11-06 23:01:06,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2075 transitions. [2023-11-06 23:01:06,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2075 transitions. [2023-11-06 23:01:06,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:06,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2075 transitions. [2023-11-06 23:01:06,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 518.75) internal successors, (2075), 4 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:06,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:06,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:06,718 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 143 flow. Second operand 4 states and 2075 transitions. [2023-11-06 23:01:06,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 237 flow [2023-11-06 23:01:06,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:06,723 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 153 flow [2023-11-06 23:01:06,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 23:01:06,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-06 23:01:06,728 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 153 flow [2023-11-06 23:01:06,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:06,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:06,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:06,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:01:06,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:06,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash -399726988, now seen corresponding path program 1 times [2023-11-06 23:01:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:06,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679476755] [2023-11-06 23:01:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:01:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679476755] [2023-11-06 23:01:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679476755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:06,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384846190] [2023-11-06 23:01:06,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:06,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:06,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:07,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 23:01:07,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 516.25) internal successors, (2065), 4 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:07,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:07,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 23:01:07,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:07,490 INFO L124 PetriNetUnfolderBase]: 789/1189 cut-off events. [2023-11-06 23:01:07,491 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 23:01:07,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 1189 events. 789/1189 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2695. Up to 1188 conditions per place. [2023-11-06 23:01:07,503 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-06 23:01:07,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 249 flow [2023-11-06 23:01:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:01:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2075 transitions. [2023-11-06 23:01:07,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730642504118616 [2023-11-06 23:01:07,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2075 transitions. [2023-11-06 23:01:07,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2075 transitions. [2023-11-06 23:01:07,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:07,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2075 transitions. [2023-11-06 23:01:07,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 518.75) internal successors, (2075), 4 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:07,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:07,540 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:07,540 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 153 flow. Second operand 4 states and 2075 transitions. [2023-11-06 23:01:07,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 249 flow [2023-11-06 23:01:07,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:07,545 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 161 flow [2023-11-06 23:01:07,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-06 23:01:07,546 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-11-06 23:01:07,546 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 161 flow [2023-11-06 23:01:07,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 516.25) internal successors, (2065), 4 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:07,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:07,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:01:07,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:07,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 574582666, now seen corresponding path program 1 times [2023-11-06 23:01:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263395004] [2023-11-06 23:01:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:01:07,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263395004] [2023-11-06 23:01:07,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263395004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:07,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:07,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:07,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780749958] [2023-11-06 23:01:07,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:07,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:07,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 23:01:07,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 516.5) internal successors, (2066), 4 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:07,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:07,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 23:01:07,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:08,341 INFO L124 PetriNetUnfolderBase]: 789/1190 cut-off events. [2023-11-06 23:01:08,341 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-06 23:01:08,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 1190 events. 789/1190 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4292 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2700. Up to 1189 conditions per place. [2023-11-06 23:01:08,353 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-06 23:01:08,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 259 flow [2023-11-06 23:01:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:01:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2075 transitions. [2023-11-06 23:01:08,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730642504118616 [2023-11-06 23:01:08,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2075 transitions. [2023-11-06 23:01:08,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2075 transitions. [2023-11-06 23:01:08,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:08,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2075 transitions. [2023-11-06 23:01:08,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 518.75) internal successors, (2075), 4 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:08,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:08,395 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:08,396 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 161 flow. Second operand 4 states and 2075 transitions. [2023-11-06 23:01:08,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 259 flow [2023-11-06 23:01:08,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 253 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:08,401 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 169 flow [2023-11-06 23:01:08,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-06 23:01:08,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-06 23:01:08,403 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 169 flow [2023-11-06 23:01:08,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 516.5) internal successors, (2066), 4 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:08,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:08,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:08,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:01:08,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:08,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash -74665817, now seen corresponding path program 1 times [2023-11-06 23:01:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649989767] [2023-11-06 23:01:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649989767] [2023-11-06 23:01:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649989767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 23:01:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085582008] [2023-11-06 23:01:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:01:10,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:10,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:01:10,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:01:11,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 471 out of 1214 [2023-11-06 23:01:11,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 169 flow. Second operand has 12 states, 12 states have (on average 473.9166666666667) internal successors, (5687), 12 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:11,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:11,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 471 of 1214 [2023-11-06 23:01:11,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:13,754 INFO L124 PetriNetUnfolderBase]: 2666/4144 cut-off events. [2023-11-06 23:01:13,754 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-06 23:01:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9478 conditions, 4144 events. 2666/4144 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22749 event pairs, 152 based on Foata normal form. 2/3780 useless extension candidates. Maximal degree in co-relation 9467. Up to 1051 conditions per place. [2023-11-06 23:01:13,797 INFO L140 encePairwiseOnDemand]: 1202/1214 looper letters, 212 selfloop transitions, 16 changer transitions 14/242 dead transitions. [2023-11-06 23:01:13,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 242 transitions, 1184 flow [2023-11-06 23:01:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:01:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 23:01:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7763 transitions. [2023-11-06 23:01:13,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39966021416803954 [2023-11-06 23:01:13,839 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7763 transitions. [2023-11-06 23:01:13,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7763 transitions. [2023-11-06 23:01:13,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:13,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7763 transitions. [2023-11-06 23:01:13,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 485.1875) internal successors, (7763), 16 states have internal predecessors, (7763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:13,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1214.0) internal successors, (20638), 17 states have internal predecessors, (20638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:13,918 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1214.0) internal successors, (20638), 17 states have internal predecessors, (20638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:13,918 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 169 flow. Second operand 16 states and 7763 transitions. [2023-11-06 23:01:13,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 242 transitions, 1184 flow [2023-11-06 23:01:13,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 242 transitions, 1178 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:01:13,954 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 272 flow [2023-11-06 23:01:13,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=272, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2023-11-06 23:01:13,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-11-06 23:01:13,958 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 272 flow [2023-11-06 23:01:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 473.9166666666667) internal successors, (5687), 12 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:13,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:13,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:01:13,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:13,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1787627995, now seen corresponding path program 2 times [2023-11-06 23:01:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:13,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927289363] [2023-11-06 23:01:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927289363] [2023-11-06 23:01:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927289363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:01:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095915300] [2023-11-06 23:01:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:15,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:01:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:01:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:01:17,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 23:01:17,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 272 flow. Second operand has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:17,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:17,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 23:01:17,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:19,712 INFO L124 PetriNetUnfolderBase]: 4533/7150 cut-off events. [2023-11-06 23:01:19,712 INFO L125 PetriNetUnfolderBase]: For 6556/6556 co-relation queries the response was YES. [2023-11-06 23:01:19,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20266 conditions, 7150 events. 4533/7150 cut-off events. For 6556/6556 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 43959 event pairs, 612 based on Foata normal form. 1/7150 useless extension candidates. Maximal degree in co-relation 20244. Up to 2899 conditions per place. [2023-11-06 23:01:19,799 INFO L140 encePairwiseOnDemand]: 1203/1214 looper letters, 139 selfloop transitions, 19 changer transitions 7/165 dead transitions. [2023-11-06 23:01:19,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 165 transitions, 969 flow [2023-11-06 23:01:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:01:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:01:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5335 transitions. [2023-11-06 23:01:19,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39950576606260296 [2023-11-06 23:01:19,818 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5335 transitions. [2023-11-06 23:01:19,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5335 transitions. [2023-11-06 23:01:19,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:19,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5335 transitions. [2023-11-06 23:01:19,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 485.0) internal successors, (5335), 11 states have internal predecessors, (5335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:19,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:19,858 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:19,859 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 272 flow. Second operand 11 states and 5335 transitions. [2023-11-06 23:01:19,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 165 transitions, 969 flow [2023-11-06 23:01:19,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 165 transitions, 946 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 23:01:19,962 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 394 flow [2023-11-06 23:01:19,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=394, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2023-11-06 23:01:19,964 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2023-11-06 23:01:19,964 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 394 flow [2023-11-06 23:01:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:19,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:19,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:19,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:01:19,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:19,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash -408007551, now seen corresponding path program 3 times [2023-11-06 23:01:19,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:19,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505699078] [2023-11-06 23:01:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505699078] [2023-11-06 23:01:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505699078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:20,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:20,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:01:20,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121213995] [2023-11-06 23:01:20,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:20,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:01:20,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:20,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:01:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:01:21,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1214 [2023-11-06 23:01:21,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 394 flow. Second operand has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:21,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:21,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1214 [2023-11-06 23:01:21,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:24,755 INFO L124 PetriNetUnfolderBase]: 7101/11436 cut-off events. [2023-11-06 23:01:24,755 INFO L125 PetriNetUnfolderBase]: For 22509/22509 co-relation queries the response was YES. [2023-11-06 23:01:24,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36412 conditions, 11436 events. 7101/11436 cut-off events. For 22509/22509 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 77449 event pairs, 3057 based on Foata normal form. 1/11436 useless extension candidates. Maximal degree in co-relation 36386. Up to 7133 conditions per place. [2023-11-06 23:01:24,862 INFO L140 encePairwiseOnDemand]: 1204/1214 looper letters, 159 selfloop transitions, 27 changer transitions 7/193 dead transitions. [2023-11-06 23:01:24,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 1394 flow [2023-11-06 23:01:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:01:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 23:01:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4514 transitions. [2023-11-06 23:01:24,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41314296174263226 [2023-11-06 23:01:24,876 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4514 transitions. [2023-11-06 23:01:24,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4514 transitions. [2023-11-06 23:01:24,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:24,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4514 transitions. [2023-11-06 23:01:24,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 501.55555555555554) internal successors, (4514), 9 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:24,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:24,910 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:24,910 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 394 flow. Second operand 9 states and 4514 transitions. [2023-11-06 23:01:24,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 1394 flow [2023-11-06 23:01:25,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 193 transitions, 1305 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-11-06 23:01:25,153 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 661 flow [2023-11-06 23:01:25,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=661, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2023-11-06 23:01:25,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2023-11-06 23:01:25,155 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 661 flow [2023-11-06 23:01:25,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:25,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:25,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:25,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:01:25,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:25,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1736242173, now seen corresponding path program 4 times [2023-11-06 23:01:25,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593592398] [2023-11-06 23:01:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:25,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:26,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:26,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593592398] [2023-11-06 23:01:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593592398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:01:26,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561843463] [2023-11-06 23:01:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:01:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:01:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:01:28,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 23:01:28,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 661 flow. Second operand has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:28,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:28,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 23:01:28,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:31,844 INFO L124 PetriNetUnfolderBase]: 7969/13138 cut-off events. [2023-11-06 23:01:31,845 INFO L125 PetriNetUnfolderBase]: For 29738/29738 co-relation queries the response was YES. [2023-11-06 23:01:31,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42354 conditions, 13138 events. 7969/13138 cut-off events. For 29738/29738 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 94784 event pairs, 1572 based on Foata normal form. 1/13138 useless extension candidates. Maximal degree in co-relation 42322. Up to 6502 conditions per place. [2023-11-06 23:01:31,987 INFO L140 encePairwiseOnDemand]: 1204/1214 looper letters, 183 selfloop transitions, 18 changer transitions 7/208 dead transitions. [2023-11-06 23:01:31,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 208 transitions, 1667 flow [2023-11-06 23:01:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:01:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:01:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5333 transitions. [2023-11-06 23:01:32,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39935599820278567 [2023-11-06 23:01:32,004 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5333 transitions. [2023-11-06 23:01:32,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5333 transitions. [2023-11-06 23:01:32,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:32,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5333 transitions. [2023-11-06 23:01:32,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 484.8181818181818) internal successors, (5333), 11 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:32,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:32,034 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:32,035 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 661 flow. Second operand 11 states and 5333 transitions. [2023-11-06 23:01:32,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 208 transitions, 1667 flow [2023-11-06 23:01:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 208 transitions, 1613 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:32,433 INFO L231 Difference]: Finished difference. Result has 112 places, 101 transitions, 796 flow [2023-11-06 23:01:32,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=796, PETRI_PLACES=112, PETRI_TRANSITIONS=101} [2023-11-06 23:01:32,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2023-11-06 23:01:32,434 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 101 transitions, 796 flow [2023-11-06 23:01:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:32,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:32,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:01:32,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:32,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash -991120427, now seen corresponding path program 5 times [2023-11-06 23:01:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:32,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802697267] [2023-11-06 23:01:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:33,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802697267] [2023-11-06 23:01:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802697267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:33,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:33,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:01:33,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195569723] [2023-11-06 23:01:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:33,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:01:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:01:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:01:36,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 23:01:36,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 101 transitions, 796 flow. Second operand has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:36,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:36,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 23:01:36,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:41,454 INFO L124 PetriNetUnfolderBase]: 13545/22695 cut-off events. [2023-11-06 23:01:41,454 INFO L125 PetriNetUnfolderBase]: For 76091/76091 co-relation queries the response was YES. [2023-11-06 23:01:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77672 conditions, 22695 events. 13545/22695 cut-off events. For 76091/76091 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 181405 event pairs, 5937 based on Foata normal form. 2/22696 useless extension candidates. Maximal degree in co-relation 77633. Up to 8696 conditions per place. [2023-11-06 23:01:41,689 INFO L140 encePairwiseOnDemand]: 1203/1214 looper letters, 190 selfloop transitions, 31 changer transitions 7/228 dead transitions. [2023-11-06 23:01:41,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 228 transitions, 2018 flow [2023-11-06 23:01:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:01:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:01:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5343 transitions. [2023-11-06 23:01:41,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001048375018721 [2023-11-06 23:01:41,718 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5343 transitions. [2023-11-06 23:01:41,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5343 transitions. [2023-11-06 23:01:41,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:41,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5343 transitions. [2023-11-06 23:01:41,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 485.72727272727275) internal successors, (5343), 11 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:41,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:41,746 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:41,746 INFO L175 Difference]: Start difference. First operand has 112 places, 101 transitions, 796 flow. Second operand 11 states and 5343 transitions. [2023-11-06 23:01:41,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 228 transitions, 2018 flow [2023-11-06 23:01:42,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 228 transitions, 1960 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-11-06 23:01:42,628 INFO L231 Difference]: Finished difference. Result has 124 places, 113 transitions, 1040 flow [2023-11-06 23:01:42,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1040, PETRI_PLACES=124, PETRI_TRANSITIONS=113} [2023-11-06 23:01:42,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2023-11-06 23:01:42,630 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 113 transitions, 1040 flow [2023-11-06 23:01:42,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:42,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:42,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:42,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:01:42,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:42,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1935543509, now seen corresponding path program 6 times [2023-11-06 23:01:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893816354] [2023-11-06 23:01:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:43,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893816354] [2023-11-06 23:01:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893816354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:43,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:43,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:01:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871578109] [2023-11-06 23:01:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:01:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:01:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:01:45,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1214 [2023-11-06 23:01:45,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 113 transitions, 1040 flow. Second operand has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:45,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1214 [2023-11-06 23:01:45,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:51,368 INFO L124 PetriNetUnfolderBase]: 13577/22962 cut-off events. [2023-11-06 23:01:51,369 INFO L125 PetriNetUnfolderBase]: For 107063/107063 co-relation queries the response was YES. [2023-11-06 23:01:51,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83864 conditions, 22962 events. 13577/22962 cut-off events. For 107063/107063 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 186124 event pairs, 4088 based on Foata normal form. 1/22962 useless extension candidates. Maximal degree in co-relation 83819. Up to 11677 conditions per place. [2023-11-06 23:01:51,634 INFO L140 encePairwiseOnDemand]: 1206/1214 looper letters, 198 selfloop transitions, 26 changer transitions 7/231 dead transitions. [2023-11-06 23:01:51,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 231 transitions, 2294 flow [2023-11-06 23:01:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:01:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 23:01:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4501 transitions. [2023-11-06 23:01:51,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119531393007505 [2023-11-06 23:01:51,651 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4501 transitions. [2023-11-06 23:01:51,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4501 transitions. [2023-11-06 23:01:51,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:51,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4501 transitions. [2023-11-06 23:01:51,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 500.1111111111111) internal successors, (4501), 9 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,677 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:51,677 INFO L175 Difference]: Start difference. First operand has 124 places, 113 transitions, 1040 flow. Second operand 9 states and 4501 transitions. [2023-11-06 23:01:51,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 231 transitions, 2294 flow [2023-11-06 23:01:52,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 231 transitions, 2231 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-06 23:01:52,852 INFO L231 Difference]: Finished difference. Result has 133 places, 120 transitions, 1199 flow [2023-11-06 23:01:52,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1199, PETRI_PLACES=133, PETRI_TRANSITIONS=120} [2023-11-06 23:01:52,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-11-06 23:01:52,854 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 120 transitions, 1199 flow [2023-11-06 23:01:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:52,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:52,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:52,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:01:52,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:52,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1252446975, now seen corresponding path program 7 times [2023-11-06 23:01:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:52,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702466714] [2023-11-06 23:01:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:01:53,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702466714] [2023-11-06 23:01:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702466714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:01:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973469595] [2023-11-06 23:01:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:53,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:01:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:01:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:01:56,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 23:01:56,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 120 transitions, 1199 flow. Second operand has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:56,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:56,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 23:01:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:03,762 INFO L124 PetriNetUnfolderBase]: 15602/26523 cut-off events. [2023-11-06 23:02:03,762 INFO L125 PetriNetUnfolderBase]: For 166624/166624 co-relation queries the response was YES. [2023-11-06 23:02:03,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100495 conditions, 26523 events. 15602/26523 cut-off events. For 166624/166624 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 220815 event pairs, 5929 based on Foata normal form. 1/26523 useless extension candidates. Maximal degree in co-relation 100445. Up to 21576 conditions per place. [2023-11-06 23:02:04,073 INFO L140 encePairwiseOnDemand]: 1203/1214 looper letters, 215 selfloop transitions, 35 changer transitions 8/258 dead transitions. [2023-11-06 23:02:04,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 258 transitions, 2700 flow [2023-11-06 23:02:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:02:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:02:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5345 transitions. [2023-11-06 23:02:04,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002546053616894 [2023-11-06 23:02:04,092 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5345 transitions. [2023-11-06 23:02:04,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5345 transitions. [2023-11-06 23:02:04,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:04,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5345 transitions. [2023-11-06 23:02:04,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 485.90909090909093) internal successors, (5345), 11 states have internal predecessors, (5345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,121 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,122 INFO L175 Difference]: Start difference. First operand has 133 places, 120 transitions, 1199 flow. Second operand 11 states and 5345 transitions. [2023-11-06 23:02:04,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 258 transitions, 2700 flow [2023-11-06 23:02:06,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 258 transitions, 2604 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:06,257 INFO L231 Difference]: Finished difference. Result has 147 places, 140 transitions, 1544 flow [2023-11-06 23:02:06,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1544, PETRI_PLACES=147, PETRI_TRANSITIONS=140} [2023-11-06 23:02:06,258 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2023-11-06 23:02:06,258 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 140 transitions, 1544 flow [2023-11-06 23:02:06,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:06,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:02:06,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:06,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash -229245183, now seen corresponding path program 8 times [2023-11-06 23:02:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:06,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949970046] [2023-11-06 23:02:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:06,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949970046] [2023-11-06 23:02:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949970046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:02:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781598894] [2023-11-06 23:02:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:07,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:02:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:02:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:02:09,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 23:02:09,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 140 transitions, 1544 flow. Second operand has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:09,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:09,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 23:02:09,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:17,581 INFO L124 PetriNetUnfolderBase]: 15745/26869 cut-off events. [2023-11-06 23:02:17,581 INFO L125 PetriNetUnfolderBase]: For 161752/161752 co-relation queries the response was YES. [2023-11-06 23:02:17,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103670 conditions, 26869 events. 15745/26869 cut-off events. For 161752/161752 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 226003 event pairs, 6954 based on Foata normal form. 4/26872 useless extension candidates. Maximal degree in co-relation 103614. Up to 11049 conditions per place. [2023-11-06 23:02:17,926 INFO L140 encePairwiseOnDemand]: 1202/1214 looper letters, 236 selfloop transitions, 40 changer transitions 9/285 dead transitions. [2023-11-06 23:02:17,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 285 transitions, 3206 flow [2023-11-06 23:02:17,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:02:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:02:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5354 transitions. [2023-11-06 23:02:17,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40092856073086713 [2023-11-06 23:02:17,938 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5354 transitions. [2023-11-06 23:02:17,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5354 transitions. [2023-11-06 23:02:17,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:17,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5354 transitions. [2023-11-06 23:02:17,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 486.72727272727275) internal successors, (5354), 11 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:17,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:17,968 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:17,968 INFO L175 Difference]: Start difference. First operand has 147 places, 140 transitions, 1544 flow. Second operand 11 states and 5354 transitions. [2023-11-06 23:02:17,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 285 transitions, 3206 flow [2023-11-06 23:02:19,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 285 transitions, 3129 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-06 23:02:19,707 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 1803 flow [2023-11-06 23:02:19,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1803, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2023-11-06 23:02:19,708 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-11-06 23:02:19,708 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 1803 flow [2023-11-06 23:02:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:19,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:19,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:19,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:02:19,710 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:19,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1341272227, now seen corresponding path program 9 times [2023-11-06 23:02:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:19,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675782695] [2023-11-06 23:02:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675782695] [2023-11-06 23:02:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675782695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:20,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:02:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715624481] [2023-11-06 23:02:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:20,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:02:20,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:02:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:02:21,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1214 [2023-11-06 23:02:21,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 1803 flow. Second operand has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:21,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:21,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1214 [2023-11-06 23:02:21,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:29,266 INFO L124 PetriNetUnfolderBase]: 15813/27082 cut-off events. [2023-11-06 23:02:29,267 INFO L125 PetriNetUnfolderBase]: For 186512/186512 co-relation queries the response was YES. [2023-11-06 23:02:29,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107669 conditions, 27082 events. 15813/27082 cut-off events. For 186512/186512 co-relation queries the response was YES. Maximal size of possible extension queue 1592. Compared 228210 event pairs, 8747 based on Foata normal form. 1/27082 useless extension candidates. Maximal degree in co-relation 107609. Up to 18210 conditions per place. [2023-11-06 23:02:29,643 INFO L140 encePairwiseOnDemand]: 1204/1214 looper letters, 220 selfloop transitions, 70 changer transitions 8/298 dead transitions. [2023-11-06 23:02:29,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 298 transitions, 3604 flow [2023-11-06 23:02:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:02:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 23:02:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4524 transitions. [2023-11-06 23:02:29,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414058209774849 [2023-11-06 23:02:29,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4524 transitions. [2023-11-06 23:02:29,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4524 transitions. [2023-11-06 23:02:29,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:29,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4524 transitions. [2023-11-06 23:02:29,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.6666666666667) internal successors, (4524), 9 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:29,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:29,925 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:29,925 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 1803 flow. Second operand 9 states and 4524 transitions. [2023-11-06 23:02:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 298 transitions, 3604 flow [2023-11-06 23:02:32,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 298 transitions, 3471 flow, removed 40 selfloop flow, removed 6 redundant places. [2023-11-06 23:02:32,665 INFO L231 Difference]: Finished difference. Result has 165 places, 187 transitions, 2519 flow [2023-11-06 23:02:32,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2519, PETRI_PLACES=165, PETRI_TRANSITIONS=187} [2023-11-06 23:02:32,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2023-11-06 23:02:32,667 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 187 transitions, 2519 flow [2023-11-06 23:02:32,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:32,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:32,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:32,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:02:32,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:32,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:32,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1824578531, now seen corresponding path program 10 times [2023-11-06 23:02:32,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:32,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72345937] [2023-11-06 23:02:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:32,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:34,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72345937] [2023-11-06 23:02:34,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72345937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:34,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:34,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:02:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657667237] [2023-11-06 23:02:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:02:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:02:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:02:36,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 23:02:36,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 187 transitions, 2519 flow. Second operand has 13 states, 13 states have (on average 475.6923076923077) internal successors, (6184), 13 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:36,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:36,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 23:02:36,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand