./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/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_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/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_057c0f7c-6028-43d5-9c5f-2cb667e863af/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 7faf759f4f4392e84815a483ab24e4497f918cd291dc733acf407d398902eccf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:14,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:14,379 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:41:14,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:14,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:14,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:14,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:14,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:14,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:14,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:14,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:14,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:14,441 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:14,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:14,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:14,444 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:14,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:14,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:14,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:14,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:14,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:14,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:14,447 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:14,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:14,448 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:14,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:14,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:14,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:14,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:14,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:14,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:14,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:14,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:14,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:14,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:14,454 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:14,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:14,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:14,455 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:14,455 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_057c0f7c-6028-43d5-9c5f-2cb667e863af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faf759f4f4392e84815a483ab24e4497f918cd291dc733acf407d398902eccf [2023-11-06 22:41:14,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:14,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:14,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:14,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:14,772 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:14,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2023-11-06 22:41:17,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:18,126 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:18,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2023-11-06 22:41:18,135 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/data/0b692dac2/9e4cb3a78a9f4edf8e91365709413c68/FLAG100e74c49 [2023-11-06 22:41:18,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/data/0b692dac2/9e4cb3a78a9f4edf8e91365709413c68 [2023-11-06 22:41:18,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:18,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:18,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:18,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:18,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:18,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717d76ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18, skipping insertion in model container [2023-11-06 22:41:18,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:18,387 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_057c0f7c-6028-43d5-9c5f-2cb667e863af/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2023-11-06 22:41:18,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:18,403 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:18,428 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_057c0f7c-6028-43d5-9c5f-2cb667e863af/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2023-11-06 22:41:18,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:18,438 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:18,438 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:18,446 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:18,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18 WrapperNode [2023-11-06 22:41:18,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:18,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:18,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:18,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:18,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,487 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-06 22:41:18,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:18,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:18,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:18,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:18,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:18,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:18,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:18,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:18,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (1/1) ... [2023-11-06 22:41:18,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:18,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:18,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:18,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:18,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:18,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:41:18,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:41:18,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:41:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:41:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:41:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:41:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:41:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:41:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:41:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:41:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:41:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:41:18,633 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 22:41:18,817 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:18,829 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:19,134 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:19,211 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:19,212 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:41:19,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:19 BoogieIcfgContainer [2023-11-06 22:41:19,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:19,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:19,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:19,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:19,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:18" (1/3) ... [2023-11-06 22:41:19,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9700b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:19, skipping insertion in model container [2023-11-06 22:41:19,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:18" (2/3) ... [2023-11-06 22:41:19,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9700b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:19, skipping insertion in model container [2023-11-06 22:41:19,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:19" (3/3) ... [2023-11-06 22:41:19,230 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-06 22:41:19,240 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:41:19,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:19,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:41:19,252 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:41:19,368 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:41:19,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 211 flow [2023-11-06 22:41:19,473 INFO L124 PetriNetUnfolderBase]: 7/92 cut-off events. [2023-11-06 22:41:19,473 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:41:19,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-06 22:41:19,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 95 transitions, 211 flow [2023-11-06 22:41:19,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 81 transitions, 180 flow [2023-11-06 22:41:19,488 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:41:19,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 81 transitions, 180 flow [2023-11-06 22:41:19,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 81 transitions, 180 flow [2023-11-06 22:41:19,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 180 flow [2023-11-06 22:41:19,535 INFO L124 PetriNetUnfolderBase]: 7/81 cut-off events. [2023-11-06 22:41:19,535 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:41:19,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 7/81 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-06 22:41:19,538 INFO L119 LiptonReduction]: Number of co-enabled transitions 860 [2023-11-06 22:41:22,750 INFO L134 LiptonReduction]: Checked pairs total: 1272 [2023-11-06 22:41:22,751 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-11-06 22:41:22,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:22,773 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;@690ae39f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:22,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:41:22,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:41:22,781 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-06 22:41:22,782 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:41:22,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:22,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:22,783 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 22:41:22,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:22,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1260629816, now seen corresponding path program 1 times [2023-11-06 22:41:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:22,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950518252] [2023-11-06 22:41:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:23,370 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 22:41:23,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:23,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950518252] [2023-11-06 22:41:23,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950518252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:23,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:23,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:41:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684311906] [2023-11-06 22:41:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:23,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:23,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:23,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:23,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 158 [2023-11-06 22:41:23,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 22:41:23,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:23,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 158 [2023-11-06 22:41:23,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:23,624 INFO L124 PetriNetUnfolderBase]: 271/426 cut-off events. [2023-11-06 22:41:23,624 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-06 22:41:23,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 426 events. 271/426 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1517 event pairs, 37 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 671. Up to 309 conditions per place. [2023-11-06 22:41:23,636 INFO L140 encePairwiseOnDemand]: 153/158 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2023-11-06 22:41:23,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2023-11-06 22:41:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-11-06 22:41:23,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2023-11-06 22:41:23,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-11-06 22:41:23,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-11-06 22:41:23,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:23,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-11-06 22:41:23,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 22:41:23,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:41:23,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 22:41:23,683 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 279 transitions. [2023-11-06 22:41:23,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 181 flow [2023-11-06 22:41:23,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:41:23,690 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 78 flow [2023-11-06 22:41:23,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-11-06 22:41:23,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-11-06 22:41:23,697 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 78 flow [2023-11-06 22:41:23,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 22:41:23,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:23,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:23,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:23,699 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 22:41:23,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1878177813, now seen corresponding path program 1 times [2023-11-06 22:41:23,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:23,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191638464] [2023-11-06 22:41:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:24,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:24,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191638464] [2023-11-06 22:41:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191638464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53029427] [2023-11-06 22:41:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:24,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 158 [2023-11-06 22:41:24,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 22:41:24,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:24,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 158 [2023-11-06 22:41:24,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:24,809 INFO L124 PetriNetUnfolderBase]: 405/626 cut-off events. [2023-11-06 22:41:24,809 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-06 22:41:24,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 626 events. 405/626 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2493 event pairs, 23 based on Foata normal form. 32/650 useless extension candidates. Maximal degree in co-relation 334. Up to 229 conditions per place. [2023-11-06 22:41:24,816 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 67 selfloop transitions, 19 changer transitions 0/88 dead transitions. [2023-11-06 22:41:24,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 88 transitions, 417 flow [2023-11-06 22:41:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:41:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:41:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 734 transitions. [2023-11-06 22:41:24,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161744022503516 [2023-11-06 22:41:24,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 734 transitions. [2023-11-06 22:41:24,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 734 transitions. [2023-11-06 22:41:24,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:24,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 734 transitions. [2023-11-06 22:41:24,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states 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 22:41:24,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 22:41:24,837 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 22:41:24,837 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 78 flow. Second operand 9 states and 734 transitions. [2023-11-06 22:41:24,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 88 transitions, 417 flow [2023-11-06 22:41:24,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 88 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:24,844 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 213 flow [2023-11-06 22:41:24,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2023-11-06 22:41:24,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-06 22:41:24,852 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 213 flow [2023-11-06 22:41:24,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 22:41:24,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:24,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:24,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:41:24,853 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 22:41:24,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:24,856 INFO L85 PathProgramCache]: Analyzing trace with hash -240532095, now seen corresponding path program 2 times [2023-11-06 22:41:24,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224442091] [2023-11-06 22:41:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:24,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:25,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:25,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224442091] [2023-11-06 22:41:25,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224442091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:25,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:25,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:25,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540822527] [2023-11-06 22:41:25,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:25,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:25,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:25,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:25,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 158 [2023-11-06 22:41:25,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 22:41:25,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:25,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 158 [2023-11-06 22:41:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:25,459 INFO L124 PetriNetUnfolderBase]: 617/958 cut-off events. [2023-11-06 22:41:25,459 INFO L125 PetriNetUnfolderBase]: For 1499/1503 co-relation queries the response was YES. [2023-11-06 22:41:25,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3142 conditions, 958 events. 617/958 cut-off events. For 1499/1503 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4124 event pairs, 33 based on Foata normal form. 20/978 useless extension candidates. Maximal degree in co-relation 2066. Up to 348 conditions per place. [2023-11-06 22:41:25,471 INFO L140 encePairwiseOnDemand]: 150/158 looper letters, 72 selfloop transitions, 15 changer transitions 3/92 dead transitions. [2023-11-06 22:41:25,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 566 flow [2023-11-06 22:41:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:25,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-11-06 22:41:25,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411392405063291 [2023-11-06 22:41:25,474 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-11-06 22:41:25,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-11-06 22:41:25,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:25,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-11-06 22:41:25,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 22:41:25,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:25,480 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:25,480 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 213 flow. Second operand 6 states and 513 transitions. [2023-11-06 22:41:25,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 566 flow [2023-11-06 22:41:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 92 transitions, 562 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:41:25,489 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 284 flow [2023-11-06 22:41:25,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-11-06 22:41:25,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-11-06 22:41:25,490 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 284 flow [2023-11-06 22:41:25,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 22:41:25,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:25,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:41:25,492 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 22:41:25,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 36240857, now seen corresponding path program 3 times [2023-11-06 22:41:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904104975] [2023-11-06 22:41:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:25,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:25,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904104975] [2023-11-06 22:41:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904104975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824310657] [2023-11-06 22:41:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:25,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:25,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2023-11-06 22:41:25,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:25,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:25,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2023-11-06 22:41:25,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:26,032 INFO L124 PetriNetUnfolderBase]: 720/1121 cut-off events. [2023-11-06 22:41:26,032 INFO L125 PetriNetUnfolderBase]: For 3021/3041 co-relation queries the response was YES. [2023-11-06 22:41:26,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 1121 events. 720/1121 cut-off events. For 3021/3041 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5074 event pairs, 107 based on Foata normal form. 28/1133 useless extension candidates. Maximal degree in co-relation 2932. Up to 799 conditions per place. [2023-11-06 22:41:26,045 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 57 selfloop transitions, 18 changer transitions 3/80 dead transitions. [2023-11-06 22:41:26,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 613 flow [2023-11-06 22:41:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 498 transitions. [2023-11-06 22:41:26,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253164556962026 [2023-11-06 22:41:26,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 498 transitions. [2023-11-06 22:41:26,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 498 transitions. [2023-11-06 22:41:26,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:26,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 498 transitions. [2023-11-06 22:41:26,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states 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 22:41:26,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:26,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:26,054 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 284 flow. Second operand 6 states and 498 transitions. [2023-11-06 22:41:26,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 613 flow [2023-11-06 22:41:26,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 595 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:26,065 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 391 flow [2023-11-06 22:41:26,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-11-06 22:41:26,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-11-06 22:41:26,066 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 391 flow [2023-11-06 22:41:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:26,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:26,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:41:26,067 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 22:41:26,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash 36823952, now seen corresponding path program 1 times [2023-11-06 22:41:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451302441] [2023-11-06 22:41:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451302441] [2023-11-06 22:41:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451302441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762698335] [2023-11-06 22:41:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:26,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:26,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:26,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:26,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:26,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 158 [2023-11-06 22:41:26,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:26,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 158 [2023-11-06 22:41:26,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:26,715 INFO L124 PetriNetUnfolderBase]: 827/1278 cut-off events. [2023-11-06 22:41:26,715 INFO L125 PetriNetUnfolderBase]: For 4981/4993 co-relation queries the response was YES. [2023-11-06 22:41:26,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5488 conditions, 1278 events. 827/1278 cut-off events. For 4981/4993 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5993 event pairs, 123 based on Foata normal form. 36/1306 useless extension candidates. Maximal degree in co-relation 3755. Up to 931 conditions per place. [2023-11-06 22:41:26,731 INFO L140 encePairwiseOnDemand]: 152/158 looper letters, 71 selfloop transitions, 12 changer transitions 3/88 dead transitions. [2023-11-06 22:41:26,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 721 flow [2023-11-06 22:41:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-11-06 22:41:26,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329113924050632 [2023-11-06 22:41:26,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-11-06 22:41:26,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-11-06 22:41:26,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:26,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-11-06 22:41:26,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 22:41:26,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:26,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:26,740 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 391 flow. Second operand 5 states and 421 transitions. [2023-11-06 22:41:26,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 721 flow [2023-11-06 22:41:26,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 686 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:26,762 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 419 flow [2023-11-06 22:41:26,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-06 22:41:26,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2023-11-06 22:41:26,763 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 419 flow [2023-11-06 22:41:26,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:26,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:26,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:26,767 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 22:41:26,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash 202540182, now seen corresponding path program 1 times [2023-11-06 22:41:26,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:26,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329021965] [2023-11-06 22:41:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:26,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:27,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329021965] [2023-11-06 22:41:27,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329021965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:27,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419937702] [2023-11-06 22:41:27,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:27,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:27,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2023-11-06 22:41:27,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 419 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:41:27,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:27,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2023-11-06 22:41:27,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:27,622 INFO L124 PetriNetUnfolderBase]: 1371/2164 cut-off events. [2023-11-06 22:41:27,623 INFO L125 PetriNetUnfolderBase]: For 9399/9399 co-relation queries the response was YES. [2023-11-06 22:41:27,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9098 conditions, 2164 events. 1371/2164 cut-off events. For 9399/9399 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10401 event pairs, 442 based on Foata normal form. 44/2208 useless extension candidates. Maximal degree in co-relation 6297. Up to 1202 conditions per place. [2023-11-06 22:41:27,643 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 76 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2023-11-06 22:41:27,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 861 flow [2023-11-06 22:41:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2023-11-06 22:41:27,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5455696202531646 [2023-11-06 22:41:27,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2023-11-06 22:41:27,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2023-11-06 22:41:27,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:27,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2023-11-06 22:41:27,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 22:41:27,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:27,651 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:27,651 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 419 flow. Second operand 5 states and 431 transitions. [2023-11-06 22:41:27,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 861 flow [2023-11-06 22:41:27,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 844 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:27,702 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 558 flow [2023-11-06 22:41:27,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-11-06 22:41:27,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2023-11-06 22:41:27,705 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 558 flow [2023-11-06 22:41:27,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:41:27,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:27,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:27,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:41:27,706 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 22:41:27,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash -612734990, now seen corresponding path program 2 times [2023-11-06 22:41:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:27,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423315587] [2023-11-06 22:41:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:28,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423315587] [2023-11-06 22:41:28,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423315587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:28,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:28,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:28,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538286987] [2023-11-06 22:41:28,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:28,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:28,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:28,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:28,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2023-11-06 22:41:28,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:41:28,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:28,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2023-11-06 22:41:28,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:28,617 INFO L124 PetriNetUnfolderBase]: 1871/2949 cut-off events. [2023-11-06 22:41:28,617 INFO L125 PetriNetUnfolderBase]: For 20188/20188 co-relation queries the response was YES. [2023-11-06 22:41:28,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14290 conditions, 2949 events. 1871/2949 cut-off events. For 20188/20188 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15340 event pairs, 317 based on Foata normal form. 34/2983 useless extension candidates. Maximal degree in co-relation 11344. Up to 1315 conditions per place. [2023-11-06 22:41:28,651 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 96 selfloop transitions, 45 changer transitions 3/144 dead transitions. [2023-11-06 22:41:28,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 144 transitions, 1560 flow [2023-11-06 22:41:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2023-11-06 22:41:28,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540506329113924 [2023-11-06 22:41:28,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 427 transitions. [2023-11-06 22:41:28,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 427 transitions. [2023-11-06 22:41:28,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:28,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 427 transitions. [2023-11-06 22:41:28,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:28,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:28,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:28,663 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 558 flow. Second operand 5 states and 427 transitions. [2023-11-06 22:41:28,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 144 transitions, 1560 flow [2023-11-06 22:41:28,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 144 transitions, 1484 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:28,706 INFO L231 Difference]: Finished difference. Result has 69 places, 94 transitions, 1083 flow [2023-11-06 22:41:28,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1083, PETRI_PLACES=69, PETRI_TRANSITIONS=94} [2023-11-06 22:41:28,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2023-11-06 22:41:28,707 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 94 transitions, 1083 flow [2023-11-06 22:41:28,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:41:28,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:28,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:28,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:28,709 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 22:41:28,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1209284590, now seen corresponding path program 3 times [2023-11-06 22:41:28,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:28,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243282238] [2023-11-06 22:41:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243282238] [2023-11-06 22:41:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243282238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:28,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884127552] [2023-11-06 22:41:28,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:28,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:28,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:29,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 158 [2023-11-06 22:41:29,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 94 transitions, 1083 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:41:29,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:29,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 158 [2023-11-06 22:41:29,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:29,827 INFO L124 PetriNetUnfolderBase]: 2480/3924 cut-off events. [2023-11-06 22:41:29,827 INFO L125 PetriNetUnfolderBase]: For 26089/26089 co-relation queries the response was YES. [2023-11-06 22:41:29,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20100 conditions, 3924 events. 2480/3924 cut-off events. For 26089/26089 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21440 event pairs, 584 based on Foata normal form. 60/3984 useless extension candidates. Maximal degree in co-relation 17924. Up to 1319 conditions per place. [2023-11-06 22:41:29,887 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 97 selfloop transitions, 68 changer transitions 3/168 dead transitions. [2023-11-06 22:41:29,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 168 transitions, 1943 flow [2023-11-06 22:41:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2023-11-06 22:41:29,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531645569620253 [2023-11-06 22:41:29,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2023-11-06 22:41:29,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2023-11-06 22:41:29,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:29,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2023-11-06 22:41:29,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 22:41:29,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:29,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:29,896 INFO L175 Difference]: Start difference. First operand has 69 places, 94 transitions, 1083 flow. Second operand 5 states and 437 transitions. [2023-11-06 22:41:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 168 transitions, 1943 flow [2023-11-06 22:41:29,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 168 transitions, 1937 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 22:41:29,995 INFO L231 Difference]: Finished difference. Result has 76 places, 108 transitions, 1493 flow [2023-11-06 22:41:29,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1493, PETRI_PLACES=76, PETRI_TRANSITIONS=108} [2023-11-06 22:41:29,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-11-06 22:41:29,999 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 108 transitions, 1493 flow [2023-11-06 22:41:29,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:41:30,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:30,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:30,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:41:30,000 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 22:41:30,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1088667976, now seen corresponding path program 4 times [2023-11-06 22:41:30,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:30,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777934272] [2023-11-06 22:41:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:30,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777934272] [2023-11-06 22:41:30,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777934272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:30,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:30,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502793040] [2023-11-06 22:41:30,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:30,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:30,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2023-11-06 22:41:30,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 108 transitions, 1493 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:41:30,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:30,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2023-11-06 22:41:30,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:31,212 INFO L124 PetriNetUnfolderBase]: 2338/3652 cut-off events. [2023-11-06 22:41:31,212 INFO L125 PetriNetUnfolderBase]: For 33157/33157 co-relation queries the response was YES. [2023-11-06 22:41:31,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20643 conditions, 3652 events. 2338/3652 cut-off events. For 33157/33157 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19333 event pairs, 736 based on Foata normal form. 34/3686 useless extension candidates. Maximal degree in co-relation 18574. Up to 2185 conditions per place. [2023-11-06 22:41:31,249 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 81 selfloop transitions, 66 changer transitions 7/154 dead transitions. [2023-11-06 22:41:31,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 154 transitions, 1998 flow [2023-11-06 22:41:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-11-06 22:41:31,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506329113924051 [2023-11-06 22:41:31,252 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-11-06 22:41:31,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-11-06 22:41:31,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:31,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-11-06 22:41:31,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 22:41:31,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:31,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:31,259 INFO L175 Difference]: Start difference. First operand has 76 places, 108 transitions, 1493 flow. Second operand 5 states and 435 transitions. [2023-11-06 22:41:31,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 154 transitions, 1998 flow [2023-11-06 22:41:31,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 154 transitions, 1994 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:41:31,369 INFO L231 Difference]: Finished difference. Result has 81 places, 104 transitions, 1586 flow [2023-11-06 22:41:31,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1586, PETRI_PLACES=81, PETRI_TRANSITIONS=104} [2023-11-06 22:41:31,370 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2023-11-06 22:41:31,370 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 104 transitions, 1586 flow [2023-11-06 22:41:31,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:41:31,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:31,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:31,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:41:31,371 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 22:41:31,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 516457556, now seen corresponding path program 5 times [2023-11-06 22:41:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:31,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925877627] [2023-11-06 22:41:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:31,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:31,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925877627] [2023-11-06 22:41:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925877627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572983413] [2023-11-06 22:41:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:31,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:31,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:31,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2023-11-06 22:41:31,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 104 transitions, 1586 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:31,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:31,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2023-11-06 22:41:31,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:32,584 INFO L124 PetriNetUnfolderBase]: 2333/3716 cut-off events. [2023-11-06 22:41:32,584 INFO L125 PetriNetUnfolderBase]: For 37319/37351 co-relation queries the response was YES. [2023-11-06 22:41:32,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21762 conditions, 3716 events. 2333/3716 cut-off events. For 37319/37351 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20169 event pairs, 553 based on Foata normal form. 178/3864 useless extension candidates. Maximal degree in co-relation 19941. Up to 2519 conditions per place. [2023-11-06 22:41:32,643 INFO L140 encePairwiseOnDemand]: 152/158 looper letters, 98 selfloop transitions, 17 changer transitions 12/160 dead transitions. [2023-11-06 22:41:32,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 160 transitions, 2396 flow [2023-11-06 22:41:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2023-11-06 22:41:32,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5417721518987342 [2023-11-06 22:41:32,647 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2023-11-06 22:41:32,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2023-11-06 22:41:32,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:32,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2023-11-06 22:41:32,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:32,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:32,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:32,652 INFO L175 Difference]: Start difference. First operand has 81 places, 104 transitions, 1586 flow. Second operand 5 states and 428 transitions. [2023-11-06 22:41:32,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 160 transitions, 2396 flow [2023-11-06 22:41:32,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 160 transitions, 2238 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:41:32,784 INFO L231 Difference]: Finished difference. Result has 84 places, 109 transitions, 1568 flow [2023-11-06 22:41:32,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1568, PETRI_PLACES=84, PETRI_TRANSITIONS=109} [2023-11-06 22:41:32,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2023-11-06 22:41:32,786 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 109 transitions, 1568 flow [2023-11-06 22:41:32,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:32,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:32,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:32,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:41:32,787 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 22:41:32,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash 496148994, now seen corresponding path program 6 times [2023-11-06 22:41:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537263716] [2023-11-06 22:41:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:33,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537263716] [2023-11-06 22:41:33,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537263716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:33,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:33,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:33,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16710076] [2023-11-06 22:41:33,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:33,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:33,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:33,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:33,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 158 [2023-11-06 22:41:33,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 109 transitions, 1568 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:41:33,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:33,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 158 [2023-11-06 22:41:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:34,330 INFO L124 PetriNetUnfolderBase]: 2930/4491 cut-off events. [2023-11-06 22:41:34,331 INFO L125 PetriNetUnfolderBase]: For 44360/44360 co-relation queries the response was YES. [2023-11-06 22:41:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27173 conditions, 4491 events. 2930/4491 cut-off events. For 44360/44360 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24245 event pairs, 437 based on Foata normal form. 66/4557 useless extension candidates. Maximal degree in co-relation 25278. Up to 1619 conditions per place. [2023-11-06 22:41:34,395 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 113 selfloop transitions, 70 changer transitions 5/188 dead transitions. [2023-11-06 22:41:34,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 188 transitions, 2664 flow [2023-11-06 22:41:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2023-11-06 22:41:34,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358649789029536 [2023-11-06 22:41:34,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2023-11-06 22:41:34,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2023-11-06 22:41:34,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:34,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2023-11-06 22:41:34,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 22:41:34,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:34,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:34,406 INFO L175 Difference]: Start difference. First operand has 84 places, 109 transitions, 1568 flow. Second operand 6 states and 508 transitions. [2023-11-06 22:41:34,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 188 transitions, 2664 flow [2023-11-06 22:41:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 188 transitions, 2626 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:34,558 INFO L231 Difference]: Finished difference. Result has 90 places, 123 transitions, 1964 flow [2023-11-06 22:41:34,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1964, PETRI_PLACES=90, PETRI_TRANSITIONS=123} [2023-11-06 22:41:34,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-11-06 22:41:34,560 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 123 transitions, 1964 flow [2023-11-06 22:41:34,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:41:34,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:34,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:34,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:41:34,561 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 22:41:34,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1901988628, now seen corresponding path program 7 times [2023-11-06 22:41:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900334741] [2023-11-06 22:41:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900334741] [2023-11-06 22:41:34,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900334741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:34,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960102874] [2023-11-06 22:41:34,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:34,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:34,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2023-11-06 22:41:34,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 123 transitions, 1964 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:34,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:34,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2023-11-06 22:41:34,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:35,651 INFO L124 PetriNetUnfolderBase]: 2674/4164 cut-off events. [2023-11-06 22:41:35,651 INFO L125 PetriNetUnfolderBase]: For 44676/44721 co-relation queries the response was YES. [2023-11-06 22:41:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26237 conditions, 4164 events. 2674/4164 cut-off events. For 44676/44721 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 22364 event pairs, 658 based on Foata normal form. 34/4174 useless extension candidates. Maximal degree in co-relation 24434. Up to 3586 conditions per place. [2023-11-06 22:41:35,706 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 85 selfloop transitions, 15 changer transitions 2/148 dead transitions. [2023-11-06 22:41:35,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 2326 flow [2023-11-06 22:41:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 415 transitions. [2023-11-06 22:41:35,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253164556962026 [2023-11-06 22:41:35,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 415 transitions. [2023-11-06 22:41:35,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 415 transitions. [2023-11-06 22:41:35,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:35,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 415 transitions. [2023-11-06 22:41:35,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 22:41:35,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:35,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 22:41:35,715 INFO L175 Difference]: Start difference. First operand has 90 places, 123 transitions, 1964 flow. Second operand 5 states and 415 transitions. [2023-11-06 22:41:35,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 2326 flow [2023-11-06 22:41:35,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 148 transitions, 2198 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-06 22:41:35,863 INFO L231 Difference]: Finished difference. Result has 93 places, 126 transitions, 1935 flow [2023-11-06 22:41:35,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1935, PETRI_PLACES=93, PETRI_TRANSITIONS=126} [2023-11-06 22:41:35,864 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2023-11-06 22:41:35,865 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 126 transitions, 1935 flow [2023-11-06 22:41:35,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:35,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:35,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:35,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:41:35,866 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 22:41:35,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:35,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2105253386, now seen corresponding path program 8 times [2023-11-06 22:41:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:35,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131649741] [2023-11-06 22:41:35,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:35,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131649741] [2023-11-06 22:41:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131649741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:36,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:36,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104011225] [2023-11-06 22:41:36,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:36,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:36,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:36,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 158 [2023-11-06 22:41:36,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 126 transitions, 1935 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:36,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:36,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 158 [2023-11-06 22:41:36,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:37,179 INFO L124 PetriNetUnfolderBase]: 2751/4275 cut-off events. [2023-11-06 22:41:37,179 INFO L125 PetriNetUnfolderBase]: For 42818/42876 co-relation queries the response was YES. [2023-11-06 22:41:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26293 conditions, 4275 events. 2751/4275 cut-off events. For 42818/42876 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 23031 event pairs, 701 based on Foata normal form. 36/4283 useless extension candidates. Maximal degree in co-relation 24588. Up to 3593 conditions per place. [2023-11-06 22:41:37,256 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 95 selfloop transitions, 18 changer transitions 4/161 dead transitions. [2023-11-06 22:41:37,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 161 transitions, 2417 flow [2023-11-06 22:41:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 491 transitions. [2023-11-06 22:41:37,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179324894514767 [2023-11-06 22:41:37,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 491 transitions. [2023-11-06 22:41:37,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 491 transitions. [2023-11-06 22:41:37,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:37,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 491 transitions. [2023-11-06 22:41:37,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:37,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:37,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 22:41:37,270 INFO L175 Difference]: Start difference. First operand has 93 places, 126 transitions, 1935 flow. Second operand 6 states and 491 transitions. [2023-11-06 22:41:37,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 161 transitions, 2417 flow [2023-11-06 22:41:37,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 2308 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-11-06 22:41:37,468 INFO L231 Difference]: Finished difference. Result has 91 places, 124 transitions, 1859 flow [2023-11-06 22:41:37,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1859, PETRI_PLACES=91, PETRI_TRANSITIONS=124} [2023-11-06 22:41:37,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2023-11-06 22:41:37,471 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 124 transitions, 1859 flow [2023-11-06 22:41:37,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:37,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:37,473 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] [2023-11-06 22:41:37,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:41:37,473 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 22:41:37,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 22453263, now seen corresponding path program 1 times [2023-11-06 22:41:37,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603657289] [2023-11-06 22:41:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:37,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603657289] [2023-11-06 22:41:37,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603657289] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057975354] [2023-11-06 22:41:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:37,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:37,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:37,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:38,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:41:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:41:38,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:38,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:39,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057975354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:39,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:39,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-11-06 22:41:39,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068857002] [2023-11-06 22:41:39,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:39,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:41:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:39,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:41:39,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:41:39,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-11-06 22:41:39,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 124 transitions, 1859 flow. Second operand has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:39,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-11-06 22:41:39,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:42,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:41:43,488 INFO L124 PetriNetUnfolderBase]: 3664/5968 cut-off events. [2023-11-06 22:41:43,488 INFO L125 PetriNetUnfolderBase]: For 58888/59366 co-relation queries the response was YES. [2023-11-06 22:41:43,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36950 conditions, 5968 events. 3664/5968 cut-off events. For 58888/59366 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 37676 event pairs, 305 based on Foata normal form. 256/6219 useless extension candidates. Maximal degree in co-relation 34376. Up to 3514 conditions per place. [2023-11-06 22:41:43,568 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 206 selfloop transitions, 89 changer transitions 5/310 dead transitions. [2023-11-06 22:41:43,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 310 transitions, 5003 flow [2023-11-06 22:41:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:41:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:41:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 715 transitions. [2023-11-06 22:41:43,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028129395218003 [2023-11-06 22:41:43,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 715 transitions. [2023-11-06 22:41:43,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 715 transitions. [2023-11-06 22:41:43,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:43,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 715 transitions. [2023-11-06 22:41:43,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.44444444444444) internal successors, (715), 9 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 22:41:43,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 22:41:43,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 22:41:43,583 INFO L175 Difference]: Start difference. First operand has 91 places, 124 transitions, 1859 flow. Second operand 9 states and 715 transitions. [2023-11-06 22:41:43,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 310 transitions, 5003 flow [2023-11-06 22:41:43,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 310 transitions, 4967 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:41:43,814 INFO L231 Difference]: Finished difference. Result has 96 places, 188 transitions, 3247 flow [2023-11-06 22:41:43,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3247, PETRI_PLACES=96, PETRI_TRANSITIONS=188} [2023-11-06 22:41:43,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2023-11-06 22:41:43,816 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 188 transitions, 3247 flow [2023-11-06 22:41:43,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:43,817 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] [2023-11-06 22:41:43,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:41:44,025 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 22:41:44,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash 498727535, now seen corresponding path program 2 times [2023-11-06 22:41:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:44,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802542362] [2023-11-06 22:41:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:44,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802542362] [2023-11-06 22:41:44,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802542362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:44,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247904783] [2023-11-06 22:41:44,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:44,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:44,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:44,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:44,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:41:44,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:41:44,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:44,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:41:44,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:45,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247904783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:45,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-11-06 22:41:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522019083] [2023-11-06 22:41:45,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:41:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:45,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:41:45,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:41:45,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 158 [2023-11-06 22:41:45,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 188 transitions, 3247 flow. Second operand has 12 states, 12 states have (on average 72.0) internal successors, (864), 12 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 22:41:45,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:45,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 158 [2023-11-06 22:41:45,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:47,622 INFO L124 PetriNetUnfolderBase]: 4341/7091 cut-off events. [2023-11-06 22:41:47,622 INFO L125 PetriNetUnfolderBase]: For 83579/84166 co-relation queries the response was YES. [2023-11-06 22:41:47,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47417 conditions, 7091 events. 4341/7091 cut-off events. For 83579/84166 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 46356 event pairs, 533 based on Foata normal form. 323/7409 useless extension candidates. Maximal degree in co-relation 44033. Up to 4832 conditions per place. [2023-11-06 22:41:47,713 INFO L140 encePairwiseOnDemand]: 151/158 looper letters, 205 selfloop transitions, 116 changer transitions 6/337 dead transitions. [2023-11-06 22:41:47,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 337 transitions, 6053 flow [2023-11-06 22:41:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:41:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:41:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 835 transitions. [2023-11-06 22:41:47,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48043728423475257 [2023-11-06 22:41:47,718 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 835 transitions. [2023-11-06 22:41:47,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 835 transitions. [2023-11-06 22:41:47,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:47,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 835 transitions. [2023-11-06 22:41:47,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.9090909090909) internal successors, (835), 11 states have internal predecessors, (835), 0 states have call successors, (0), 0 states 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 22:41:47,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 22:41:47,728 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 22:41:47,728 INFO L175 Difference]: Start difference. First operand has 96 places, 188 transitions, 3247 flow. Second operand 11 states and 835 transitions. [2023-11-06 22:41:47,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 337 transitions, 6053 flow [2023-11-06 22:41:48,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 337 transitions, 5786 flow, removed 124 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:48,072 INFO L231 Difference]: Finished difference. Result has 109 places, 249 transitions, 4560 flow [2023-11-06 22:41:48,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=3040, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4560, PETRI_PLACES=109, PETRI_TRANSITIONS=249} [2023-11-06 22:41:48,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2023-11-06 22:41:48,073 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 249 transitions, 4560 flow [2023-11-06 22:41:48,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.0) internal successors, (864), 12 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 22:41:48,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:48,074 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] [2023-11-06 22:41:48,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:41:48,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:41:48,275 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 22:41:48,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash -118538419, now seen corresponding path program 1 times [2023-11-06 22:41:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:48,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102609567] [2023-11-06 22:41:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102609567] [2023-11-06 22:41:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102609567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415137916] [2023-11-06 22:41:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:48,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:48,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:41:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:48,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:41:48,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:49,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415137916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:50,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:50,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2023-11-06 22:41:50,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571958921] [2023-11-06 22:41:50,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:50,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:41:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:50,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:41:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:41:50,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 158 [2023-11-06 22:41:50,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 249 transitions, 4560 flow. Second operand has 22 states, 22 states have (on average 69.27272727272727) internal successors, (1524), 22 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 22:41:50,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:50,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 158 [2023-11-06 22:41:50,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:57,057 INFO L124 PetriNetUnfolderBase]: 7899/12233 cut-off events. [2023-11-06 22:41:57,057 INFO L125 PetriNetUnfolderBase]: For 162329/162329 co-relation queries the response was YES. [2023-11-06 22:41:57,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81902 conditions, 12233 events. 7899/12233 cut-off events. For 162329/162329 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 78953 event pairs, 258 based on Foata normal form. 670/12903 useless extension candidates. Maximal degree in co-relation 79295. Up to 4319 conditions per place. [2023-11-06 22:41:57,193 INFO L140 encePairwiseOnDemand]: 147/158 looper letters, 589 selfloop transitions, 446 changer transitions 2/1037 dead transitions. [2023-11-06 22:41:57,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1037 transitions, 16513 flow [2023-11-06 22:41:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-06 22:41:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-06 22:41:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3899 transitions. [2023-11-06 22:41:57,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838669645073219 [2023-11-06 22:41:57,213 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3899 transitions. [2023-11-06 22:41:57,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3899 transitions. [2023-11-06 22:41:57,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:57,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3899 transitions. [2023-11-06 22:41:57,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 76.45098039215686) internal successors, (3899), 51 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states 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 22:41:57,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 158.0) internal successors, (8216), 52 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states 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 22:41:57,256 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 158.0) internal successors, (8216), 52 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states 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 22:41:57,256 INFO L175 Difference]: Start difference. First operand has 109 places, 249 transitions, 4560 flow. Second operand 51 states and 3899 transitions. [2023-11-06 22:41:57,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 1037 transitions, 16513 flow [2023-11-06 22:41:57,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1037 transitions, 16152 flow, removed 171 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:57,977 INFO L231 Difference]: Finished difference. Result has 187 places, 631 transitions, 12216 flow [2023-11-06 22:41:57,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=4405, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=12216, PETRI_PLACES=187, PETRI_TRANSITIONS=631} [2023-11-06 22:41:57,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2023-11-06 22:41:57,979 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 631 transitions, 12216 flow [2023-11-06 22:41:57,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 69.27272727272727) internal successors, (1524), 22 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 22:41:57,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:57,980 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] [2023-11-06 22:41:57,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:41:58,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:41:58,181 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 22:41:58,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 959647361, now seen corresponding path program 2 times [2023-11-06 22:41:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978605933] [2023-11-06 22:41:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:58,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:58,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978605933] [2023-11-06 22:41:58,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978605933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:58,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242181006] [2023-11-06 22:41:58,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:58,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:58,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:58,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:58,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:41:58,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:41:58,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:58,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:41:58,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:58,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:59,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242181006] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:59,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:59,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 15 [2023-11-06 22:41:59,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637011282] [2023-11-06 22:41:59,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:59,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:41:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:41:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:41:59,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 158 [2023-11-06 22:41:59,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 631 transitions, 12216 flow. Second operand has 16 states, 16 states have (on average 69.4375) internal successors, (1111), 16 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 22:41:59,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:59,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 158 [2023-11-06 22:41:59,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:09,831 INFO L124 PetriNetUnfolderBase]: 11248/17732 cut-off events. [2023-11-06 22:42:09,831 INFO L125 PetriNetUnfolderBase]: For 357515/357515 co-relation queries the response was YES. [2023-11-06 22:42:09,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145447 conditions, 17732 events. 11248/17732 cut-off events. For 357515/357515 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 123935 event pairs, 175 based on Foata normal form. 278/18010 useless extension candidates. Maximal degree in co-relation 142274. Up to 4265 conditions per place. [2023-11-06 22:42:10,065 INFO L140 encePairwiseOnDemand]: 147/158 looper letters, 691 selfloop transitions, 1243 changer transitions 12/1946 dead transitions. [2023-11-06 22:42:10,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1946 transitions, 38490 flow [2023-11-06 22:42:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-06 22:42:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-11-06 22:42:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5172 transitions. [2023-11-06 22:42:10,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813849590469099 [2023-11-06 22:42:10,079 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5172 transitions. [2023-11-06 22:42:10,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5172 transitions. [2023-11-06 22:42:10,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:10,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5172 transitions. [2023-11-06 22:42:10,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 76.05882352941177) internal successors, (5172), 68 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states 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 22:42:10,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 158.0) internal successors, (10902), 69 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states 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 22:42:10,116 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 158.0) internal successors, (10902), 69 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states 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 22:42:10,116 INFO L175 Difference]: Start difference. First operand has 187 places, 631 transitions, 12216 flow. Second operand 68 states and 5172 transitions. [2023-11-06 22:42:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1946 transitions, 38490 flow [2023-11-06 22:42:15,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1946 transitions, 34669 flow, removed 1852 selfloop flow, removed 6 redundant places. [2023-11-06 22:42:15,385 INFO L231 Difference]: Finished difference. Result has 295 places, 1495 transitions, 31301 flow [2023-11-06 22:42:15,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=10389, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=31301, PETRI_PLACES=295, PETRI_TRANSITIONS=1495} [2023-11-06 22:42:15,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2023-11-06 22:42:15,387 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1495 transitions, 31301 flow [2023-11-06 22:42:15,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.4375) internal successors, (1111), 16 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 22:42:15,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:15,388 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] [2023-11-06 22:42:15,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:15,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:42:15,594 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 22:42:15,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -618599517, now seen corresponding path program 3 times [2023-11-06 22:42:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:15,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133418606] [2023-11-06 22:42:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133418606] [2023-11-06 22:42:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133418606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:15,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874779734] [2023-11-06 22:42:15,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:42:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:15,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:15,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:42:16,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:42:16,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:16,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:42:16,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:16,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874779734] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:17,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-06 22:42:17,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949174726] [2023-11-06 22:42:17,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:42:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:42:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:42:17,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 158 [2023-11-06 22:42:17,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1495 transitions, 31301 flow. Second operand has 20 states, 20 states have (on average 69.15) internal successors, (1383), 20 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 22:42:17,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:17,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 158 [2023-11-06 22:42:17,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:43,940 INFO L124 PetriNetUnfolderBase]: 19533/31047 cut-off events. [2023-11-06 22:42:43,940 INFO L125 PetriNetUnfolderBase]: For 852205/852205 co-relation queries the response was YES. [2023-11-06 22:42:44,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279154 conditions, 31047 events. 19533/31047 cut-off events. For 852205/852205 co-relation queries the response was YES. Maximal size of possible extension queue 1721. Compared 236196 event pairs, 269 based on Foata normal form. 740/31787 useless extension candidates. Maximal degree in co-relation 276497. Up to 7761 conditions per place. [2023-11-06 22:42:44,563 INFO L140 encePairwiseOnDemand]: 147/158 looper letters, 1324 selfloop transitions, 2359 changer transitions 2/3685 dead transitions. [2023-11-06 22:42:44,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 3685 transitions, 85451 flow [2023-11-06 22:42:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-06 22:42:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-06 22:42:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4265 transitions. [2023-11-06 22:42:44,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907940161104718 [2023-11-06 22:42:44,574 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4265 transitions. [2023-11-06 22:42:44,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4265 transitions. [2023-11-06 22:42:44,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:44,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4265 transitions. [2023-11-06 22:42:44,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 77.54545454545455) internal successors, (4265), 55 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states 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 22:42:44,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 158.0) internal successors, (8848), 56 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states 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 22:42:44,605 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 158.0) internal successors, (8848), 56 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states 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 22:42:44,605 INFO L175 Difference]: Start difference. First operand has 295 places, 1495 transitions, 31301 flow. Second operand 55 states and 4265 transitions. [2023-11-06 22:42:44,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 3685 transitions, 85451 flow [2023-11-06 22:43:23,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 3685 transitions, 78817 flow, removed 3043 selfloop flow, removed 5 redundant places. [2023-11-06 22:43:23,921 INFO L231 Difference]: Finished difference. Result has 392 places, 2953 transitions, 69267 flow [2023-11-06 22:43:23,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=28251, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=69267, PETRI_PLACES=392, PETRI_TRANSITIONS=2953} [2023-11-06 22:43:23,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2023-11-06 22:43:23,924 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 2953 transitions, 69267 flow [2023-11-06 22:43:23,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 69.15) internal successors, (1383), 20 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 22:43:23,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:23,925 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] [2023-11-06 22:43:23,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:43:24,126 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 22:43:24,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash 513793579, now seen corresponding path program 4 times [2023-11-06 22:43:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492317750] [2023-11-06 22:43:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:24,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:24,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492317750] [2023-11-06 22:43:24,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492317750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:24,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695558910] [2023-11-06 22:43:24,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:43:24,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:24,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:24,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:24,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c0f7c-6028-43d5-9c5f-2cb667e863af/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:43:24,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:43:24,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:24,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:43:24,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:24,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695558910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:24,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-11-06 22:43:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019411112] [2023-11-06 22:43:24,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:43:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:43:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:43:24,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 158 [2023-11-06 22:43:24,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 2953 transitions, 69267 flow. Second operand has 17 states, 17 states have (on average 69.47058823529412) internal successors, (1181), 17 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states 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 22:43:24,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:24,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 158 [2023-11-06 22:43:24,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:42,779 INFO L124 PetriNetUnfolderBase]: 33212/53360 cut-off events. [2023-11-06 22:44:42,779 INFO L125 PetriNetUnfolderBase]: For 1967547/1967547 co-relation queries the response was YES. [2023-11-06 22:44:43,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551336 conditions, 53360 events. 33212/53360 cut-off events. For 1967547/1967547 co-relation queries the response was YES. Maximal size of possible extension queue 3238. Compared 447517 event pairs, 280 based on Foata normal form. 1102/54462 useless extension candidates. Maximal degree in co-relation 549629. Up to 12353 conditions per place. [2023-11-06 22:44:44,401 INFO L140 encePairwiseOnDemand]: 147/158 looper letters, 1855 selfloop transitions, 4473 changer transitions 26/6354 dead transitions. [2023-11-06 22:44:44,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 6354 transitions, 166749 flow [2023-11-06 22:44:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-11-06 22:44:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-11-06 22:44:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 6373 transitions. [2023-11-06 22:44:44,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801838456901748 [2023-11-06 22:44:44,416 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 6373 transitions. [2023-11-06 22:44:44,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 6373 transitions. [2023-11-06 22:44:44,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:44,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 6373 transitions. [2023-11-06 22:44:44,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 75.86904761904762) internal successors, (6373), 84 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states 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 22:44:44,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 158.0) internal successors, (13430), 85 states have internal predecessors, (13430), 0 states have call successors, (0), 0 states 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 22:44:44,458 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 158.0) internal successors, (13430), 85 states have internal predecessors, (13430), 0 states have call successors, (0), 0 states 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 22:44:44,458 INFO L175 Difference]: Start difference. First operand has 392 places, 2953 transitions, 69267 flow. Second operand 84 states and 6373 transitions. [2023-11-06 22:44:44,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 6354 transitions, 166749 flow