./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/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_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/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_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:51:10,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:51:10,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:51:10,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:51:10,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:51:10,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:51:10,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:51:10,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:51:10,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:51:10,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:51:10,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:51:10,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:51:10,721 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:51:10,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:51:10,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:51:10,723 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:51:10,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:51:10,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:51:10,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:51:10,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:51:10,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:51:10,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:51:10,732 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:51:10,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:51:10,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:51:10,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:51:10,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:51:10,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:51:10,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:51:10,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:51:10,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:51:10,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:51:10,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:51:10,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:51:10,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:51:10,738 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:51:10,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:51:10,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:51:10,739 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:51:10,739 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_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2023-11-06 22:51:11,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:51:11,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:51:11,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:51:11,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:51:11,091 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:51:11,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2023-11-06 22:51:14,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:51:14,516 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:51:14,517 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2023-11-06 22:51:14,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/data/9b54ffe4d/4671d4a25d64413bb9d4138eb0898197/FLAG9711440ed [2023-11-06 22:51:14,564 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/data/9b54ffe4d/4671d4a25d64413bb9d4138eb0898197 [2023-11-06 22:51:14,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:51:14,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:51:14,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:51:14,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:51:14,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:51:14,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:14" (1/1) ... [2023-11-06 22:51:14,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70335145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:14, skipping insertion in model container [2023-11-06 22:51:14,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:14" (1/1) ... [2023-11-06 22:51:14,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:51:14,865 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:51:15,026 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_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i[30633,30646] [2023-11-06 22:51:15,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:51:15,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:51:15,063 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:51:15,085 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_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i[30633,30646] [2023-11-06 22:51:15,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:51:15,136 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:51:15,136 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:51:15,137 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:51:15,144 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:51:15,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15 WrapperNode [2023-11-06 22:51:15,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:51:15,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:51:15,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:51:15,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:51:15,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,211 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-11-06 22:51:15,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:51:15,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:51:15,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:51:15,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:51:15,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:51:15,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:51:15,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:51:15,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:51:15,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (1/1) ... [2023-11-06 22:51:15,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:51:15,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:15,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:51:15,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4ab96-ae6e-4c4e-8446-3edaf031cd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:51:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:51:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:51:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:51:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:51:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:51:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:51:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:51:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:51:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:51:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:51:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:51:15,347 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 22:51:15,479 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:51:15,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:51:15,586 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:51:15,611 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:51:15,611 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:51:15,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:15 BoogieIcfgContainer [2023-11-06 22:51:15,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:51:15,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:51:15,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:51:15,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:51:15,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:14" (1/3) ... [2023-11-06 22:51:15,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:15, skipping insertion in model container [2023-11-06 22:51:15,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:15" (2/3) ... [2023-11-06 22:51:15,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:15, skipping insertion in model container [2023-11-06 22:51:15,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:15" (3/3) ... [2023-11-06 22:51:15,624 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-11-06 22:51:15,633 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:51:15,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:51:15,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:51:15,644 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:51:15,691 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 40 transitions, 84 flow [2023-11-06 22:51:15,781 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-06 22:51:15,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:15,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2023-11-06 22:51:15,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 40 transitions, 84 flow [2023-11-06 22:51:15,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 40 transitions, 84 flow [2023-11-06 22:51:15,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:15,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 40 transitions, 84 flow [2023-11-06 22:51:15,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 40 transitions, 84 flow [2023-11-06 22:51:15,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 40 transitions, 84 flow [2023-11-06 22:51:15,826 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-06 22:51:15,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:15,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2023-11-06 22:51:15,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-11-06 22:51:17,115 INFO L134 LiptonReduction]: Checked pairs total: 259 [2023-11-06 22:51:17,115 INFO L136 LiptonReduction]: Total number of compositions: 37 [2023-11-06 22:51:17,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:17,148 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;@763ff8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:17,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:51:17,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:17,152 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:51:17,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:17,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:17,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:51:17,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:17,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 5529398, now seen corresponding path program 1 times [2023-11-06 22:51:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016850658] [2023-11-06 22:51:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:17,334 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 22:51:17,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016850658] [2023-11-06 22:51:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016850658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:17,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:17,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132458557] [2023-11-06 22:51:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:17,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:51:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:51:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:51:17,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 77 [2023-11-06 22:51:17,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 20 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 22:51:17,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:17,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 77 [2023-11-06 22:51:17,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:17,399 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-11-06 22:51:17,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:17,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-11-06 22:51:17,401 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-11-06 22:51:17,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 26 flow [2023-11-06 22:51:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:51:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:51:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2023-11-06 22:51:17,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-06 22:51:17,415 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 77 transitions. [2023-11-06 22:51:17,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 77 transitions. [2023-11-06 22:51:17,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:17,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 77 transitions. [2023-11-06 22:51:17,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 22:51:17,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 22:51:17,426 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 22:51:17,428 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 20 flow. Second operand 2 states and 77 transitions. [2023-11-06 22:51:17,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 26 flow [2023-11-06 22:51:17,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:17,433 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 16 flow [2023-11-06 22:51:17,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=16, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-11-06 22:51:17,439 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, -1 predicate places. [2023-11-06 22:51:17,439 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 16 flow [2023-11-06 22:51:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 22:51:17,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:17,440 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:51:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:51:17,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:17,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1018774188, now seen corresponding path program 1 times [2023-11-06 22:51:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418657896] [2023-11-06 22:51:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:17,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:17,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:17,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:17,505 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-06 22:51:17,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-06 22:51:17,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-06 22:51:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:51:17,508 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:51:17,511 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:17,511 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:51:17,526 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:17,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 114 flow [2023-11-06 22:51:17,546 INFO L124 PetriNetUnfolderBase]: 3/76 cut-off events. [2023-11-06 22:51:17,547 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:51:17,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 3/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2023-11-06 22:51:17,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 114 flow [2023-11-06 22:51:17,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 114 flow [2023-11-06 22:51:17,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:17,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 52 transitions, 114 flow [2023-11-06 22:51:17,550 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 52 transitions, 114 flow [2023-11-06 22:51:17,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 114 flow [2023-11-06 22:51:17,566 INFO L124 PetriNetUnfolderBase]: 3/76 cut-off events. [2023-11-06 22:51:17,567 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:51:17,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 3/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2023-11-06 22:51:17,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 880 [2023-11-06 22:51:18,838 INFO L134 LiptonReduction]: Checked pairs total: 1154 [2023-11-06 22:51:18,838 INFO L136 LiptonReduction]: Total number of compositions: 39 [2023-11-06 22:51:18,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:18,843 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;@763ff8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:18,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:51:18,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:18,847 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:51:18,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:18,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:18,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:18,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 22:51:18,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 269761588, now seen corresponding path program 1 times [2023-11-06 22:51:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272212136] [2023-11-06 22:51:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:18,967 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 22:51:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272212136] [2023-11-06 22:51:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272212136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35373193] [2023-11-06 22:51:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:18,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:18,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-06 22:51:18,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 22:51:18,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:18,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-06 22:51:18,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:19,031 INFO L124 PetriNetUnfolderBase]: 42/97 cut-off events. [2023-11-06 22:51:19,032 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:51:19,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 97 events. 42/97 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 409 event pairs, 16 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 160. Up to 47 conditions per place. [2023-11-06 22:51:19,034 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 13 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2023-11-06 22:51:19,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 85 flow [2023-11-06 22:51:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2023-11-06 22:51:19,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2023-11-06 22:51:19,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2023-11-06 22:51:19,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2023-11-06 22:51:19,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:19,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2023-11-06 22:51:19,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 22:51:19,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,042 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 38 flow. Second operand 3 states and 133 transitions. [2023-11-06 22:51:19,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 85 flow [2023-11-06 22:51:19,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 85 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:19,044 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 58 flow [2023-11-06 22:51:19,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-11-06 22:51:19,045 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-11-06 22:51:19,046 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 58 flow [2023-11-06 22:51:19,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 22:51:19,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:19,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:19,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:51:19,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 22:51:19,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash -883570530, now seen corresponding path program 1 times [2023-11-06 22:51:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:19,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980185839] [2023-11-06 22:51:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:19,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:19,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980185839] [2023-11-06 22:51:19,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980185839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:19,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:19,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928578746] [2023-11-06 22:51:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:19,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:19,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:19,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:19,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:19,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-06 22:51:19,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 22:51:19,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:19,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-06 22:51:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:19,145 INFO L124 PetriNetUnfolderBase]: 33/92 cut-off events. [2023-11-06 22:51:19,145 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-06 22:51:19,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 92 events. 33/92 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 386 event pairs, 18 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 96. Up to 41 conditions per place. [2023-11-06 22:51:19,147 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 4 changer transitions 0/19 dead transitions. [2023-11-06 22:51:19,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 104 flow [2023-11-06 22:51:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-06 22:51:19,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2023-11-06 22:51:19,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-06 22:51:19,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-06 22:51:19,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:19,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-06 22:51:19,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 22:51:19,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,154 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 58 flow. Second operand 3 states and 129 transitions. [2023-11-06 22:51:19,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 104 flow [2023-11-06 22:51:19,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:19,157 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 80 flow [2023-11-06 22:51:19,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-11-06 22:51:19,158 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-11-06 22:51:19,158 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 80 flow [2023-11-06 22:51:19,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 22:51:19,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:19,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:51:19,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 22:51:19,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1619873644, now seen corresponding path program 1 times [2023-11-06 22:51:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:19,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393272605] [2023-11-06 22:51:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393272605] [2023-11-06 22:51:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393272605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:19,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269189458] [2023-11-06 22:51:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:19,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:19,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-06 22:51:19,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:51:19,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:19,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-06 22:51:19,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:19,333 INFO L124 PetriNetUnfolderBase]: 29/78 cut-off events. [2023-11-06 22:51:19,334 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:51:19,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 78 events. 29/78 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 304 event pairs, 6 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 190. Up to 61 conditions per place. [2023-11-06 22:51:19,345 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 14 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-11-06 22:51:19,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 121 flow [2023-11-06 22:51:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-06 22:51:19,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2023-11-06 22:51:19,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-06 22:51:19,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-06 22:51:19,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:19,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-06 22:51:19,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 22:51:19,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,357 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 80 flow. Second operand 3 states and 128 transitions. [2023-11-06 22:51:19,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 121 flow [2023-11-06 22:51:19,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:19,361 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 72 flow [2023-11-06 22:51:19,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-11-06 22:51:19,363 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-11-06 22:51:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 72 flow [2023-11-06 22:51:19,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:51:19,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:19,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:51:19,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 22:51:19,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1620880845, now seen corresponding path program 1 times [2023-11-06 22:51:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787791976] [2023-11-06 22:51:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787791976] [2023-11-06 22:51:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787791976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:19,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385674984] [2023-11-06 22:51:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:19,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:19,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:19,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:19,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:19,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-06 22:51:19,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:51:19,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:19,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-06 22:51:19,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:19,687 INFO L124 PetriNetUnfolderBase]: 25/76 cut-off events. [2023-11-06 22:51:19,687 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-06 22:51:19,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 76 events. 25/76 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 302 event pairs, 8 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 45 conditions per place. [2023-11-06 22:51:19,688 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-11-06 22:51:19,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 102 flow [2023-11-06 22:51:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2023-11-06 22:51:19,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-11-06 22:51:19,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 126 transitions. [2023-11-06 22:51:19,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 126 transitions. [2023-11-06 22:51:19,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:19,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 126 transitions. [2023-11-06 22:51:19,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:51:19,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 22:51:19,694 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 72 flow. Second operand 3 states and 126 transitions. [2023-11-06 22:51:19,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 102 flow [2023-11-06 22:51:19,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:19,696 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 70 flow [2023-11-06 22:51:19,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2023-11-06 22:51:19,697 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-11-06 22:51:19,698 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 70 flow [2023-11-06 22:51:19,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:51:19,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:19,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:51:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:51:19,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-06 22:51:19,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1290326249, now seen corresponding path program 1 times [2023-11-06 22:51:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564645028] [2023-11-06 22:51:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:19,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:19,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:19,739 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:19,739 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-06 22:51:19,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-06 22:51:19,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-06 22:51:19,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-06 22:51:19,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:51:19,740 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:51:19,741 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:19,742 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:51:19,763 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:19,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 64 transitions, 146 flow [2023-11-06 22:51:19,786 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-11-06 22:51:19,786 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:51:19,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 4/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2023-11-06 22:51:19,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 64 transitions, 146 flow [2023-11-06 22:51:19,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 64 transitions, 146 flow [2023-11-06 22:51:19,788 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:19,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 64 transitions, 146 flow [2023-11-06 22:51:19,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 64 transitions, 146 flow [2023-11-06 22:51:19,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 64 transitions, 146 flow [2023-11-06 22:51:19,801 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-11-06 22:51:19,802 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:51:19,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 4/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2023-11-06 22:51:19,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 1716 [2023-11-06 22:51:21,135 INFO L134 LiptonReduction]: Checked pairs total: 2686 [2023-11-06 22:51:21,135 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-11-06 22:51:21,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:21,150 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;@763ff8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:21,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:51:21,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:21,154 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:51:21,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:21,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:21,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:21,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:21,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash 387043061, now seen corresponding path program 1 times [2023-11-06 22:51:21,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995083226] [2023-11-06 22:51:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:21,191 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 22:51:21,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:21,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995083226] [2023-11-06 22:51:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995083226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:21,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721385474] [2023-11-06 22:51:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:21,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:21,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2023-11-06 22:51:21,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 22:51:21,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:21,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2023-11-06 22:51:21,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:21,342 INFO L124 PetriNetUnfolderBase]: 370/649 cut-off events. [2023-11-06 22:51:21,342 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-11-06 22:51:21,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 649 events. 370/649 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3493 event pairs, 180 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 328. Up to 363 conditions per place. [2023-11-06 22:51:21,349 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 20 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-06 22:51:21,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 132 flow [2023-11-06 22:51:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-06 22:51:21,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2023-11-06 22:51:21,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-06 22:51:21,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-06 22:51:21,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:21,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-06 22:51:21,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 22:51:21,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,355 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 54 flow. Second operand 3 states and 165 transitions. [2023-11-06 22:51:21,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 132 flow [2023-11-06 22:51:21,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 128 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:21,359 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 80 flow [2023-11-06 22:51:21,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-06 22:51:21,361 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-11-06 22:51:21,361 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 80 flow [2023-11-06 22:51:21,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 22:51:21,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:21,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:51:21,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:21,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -34509264, now seen corresponding path program 1 times [2023-11-06 22:51:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909998972] [2023-11-06 22:51:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:21,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:21,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:21,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909998972] [2023-11-06 22:51:21,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909998972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:21,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56658809] [2023-11-06 22:51:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:21,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:21,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2023-11-06 22:51:21,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 22:51:21,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:21,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2023-11-06 22:51:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:21,534 INFO L124 PetriNetUnfolderBase]: 432/765 cut-off events. [2023-11-06 22:51:21,535 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2023-11-06 22:51:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 765 events. 432/765 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4372 event pairs, 182 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 936. Up to 429 conditions per place. [2023-11-06 22:51:21,543 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 22 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-06 22:51:21,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 181 flow [2023-11-06 22:51:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-11-06 22:51:21,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-11-06 22:51:21,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-11-06 22:51:21,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-11-06 22:51:21,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:21,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-11-06 22:51:21,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 22:51:21,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,549 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 80 flow. Second operand 3 states and 162 transitions. [2023-11-06 22:51:21,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 181 flow [2023-11-06 22:51:21,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:21,552 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 120 flow [2023-11-06 22:51:21,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-06 22:51:21,553 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-11-06 22:51:21,553 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 120 flow [2023-11-06 22:51:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 22:51:21,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:21,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:51:21,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:21,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1068517733, now seen corresponding path program 1 times [2023-11-06 22:51:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236202574] [2023-11-06 22:51:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:21,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:21,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236202574] [2023-11-06 22:51:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236202574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:21,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:21,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123153008] [2023-11-06 22:51:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:21,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2023-11-06 22:51:21,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:51:21,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:21,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2023-11-06 22:51:21,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:21,727 INFO L124 PetriNetUnfolderBase]: 352/619 cut-off events. [2023-11-06 22:51:21,727 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-06 22:51:21,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 619 events. 352/619 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3516 event pairs, 64 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1828. Up to 512 conditions per place. [2023-11-06 22:51:21,735 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 28 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-06 22:51:21,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 226 flow [2023-11-06 22:51:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2023-11-06 22:51:21,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2023-11-06 22:51:21,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 161 transitions. [2023-11-06 22:51:21,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 161 transitions. [2023-11-06 22:51:21,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:21,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 161 transitions. [2023-11-06 22:51:21,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 22:51:21,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,741 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 120 flow. Second operand 3 states and 161 transitions. [2023-11-06 22:51:21,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 226 flow [2023-11-06 22:51:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:21,746 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 108 flow [2023-11-06 22:51:21,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-06 22:51:21,749 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-11-06 22:51:21,749 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 108 flow [2023-11-06 22:51:21,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:51:21,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:21,750 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:21,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:51:21,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:21,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1069785312, now seen corresponding path program 1 times [2023-11-06 22:51:21,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:21,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669247660] [2023-11-06 22:51:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:21,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:21,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669247660] [2023-11-06 22:51:21,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669247660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:21,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:21,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:21,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078978274] [2023-11-06 22:51:21,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:21,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:21,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2023-11-06 22:51:21,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:51:21,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:21,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2023-11-06 22:51:21,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:21,968 INFO L124 PetriNetUnfolderBase]: 285/518 cut-off events. [2023-11-06 22:51:21,969 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-11-06 22:51:21,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 518 events. 285/518 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2855 event pairs, 51 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 776. Up to 412 conditions per place. [2023-11-06 22:51:21,975 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 25 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-11-06 22:51:21,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 193 flow [2023-11-06 22:51:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2023-11-06 22:51:21,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2023-11-06 22:51:21,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 158 transitions. [2023-11-06 22:51:21,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 158 transitions. [2023-11-06 22:51:21,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:21,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 158 transitions. [2023-11-06 22:51:21,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 22:51:21,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:21,980 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 108 flow. Second operand 3 states and 158 transitions. [2023-11-06 22:51:21,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 193 flow [2023-11-06 22:51:21,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:21,984 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 106 flow [2023-11-06 22:51:21,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-11-06 22:51:21,985 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-11-06 22:51:21,986 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 106 flow [2023-11-06 22:51:21,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:51:21,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:21,986 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:21,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:51:21,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:21,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 517546030, now seen corresponding path program 1 times [2023-11-06 22:51:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409071652] [2023-11-06 22:51:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:22,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409071652] [2023-11-06 22:51:22,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409071652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:22,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:22,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486678092] [2023-11-06 22:51:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:22,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:22,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2023-11-06 22:51:22,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 22:51:22,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:22,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2023-11-06 22:51:22,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:22,144 INFO L124 PetriNetUnfolderBase]: 284/582 cut-off events. [2023-11-06 22:51:22,144 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2023-11-06 22:51:22,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 582 events. 284/582 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3472 event pairs, 140 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 888. Up to 341 conditions per place. [2023-11-06 22:51:22,151 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 20 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2023-11-06 22:51:22,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 214 flow [2023-11-06 22:51:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-06 22:51:22,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2023-11-06 22:51:22,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-06 22:51:22,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-06 22:51:22,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:22,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-06 22:51:22,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 22:51:22,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:22,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:22,155 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 106 flow. Second operand 3 states and 157 transitions. [2023-11-06 22:51:22,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 214 flow [2023-11-06 22:51:22,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:22,157 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 182 flow [2023-11-06 22:51:22,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-06 22:51:22,159 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-11-06 22:51:22,160 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 182 flow [2023-11-06 22:51:22,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 22:51:22,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:22,160 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:51:22,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:22,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1135939722, now seen corresponding path program 1 times [2023-11-06 22:51:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415109194] [2023-11-06 22:51:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:22,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:22,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415109194] [2023-11-06 22:51:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415109194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:22,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:22,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654086005] [2023-11-06 22:51:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:22,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:22,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2023-11-06 22:51:22,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:51:22,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:22,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2023-11-06 22:51:22,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:22,330 INFO L124 PetriNetUnfolderBase]: 237/505 cut-off events. [2023-11-06 22:51:22,330 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2023-11-06 22:51:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 505 events. 237/505 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2989 event pairs, 79 based on Foata normal form. 30/531 useless extension candidates. Maximal degree in co-relation 908. Up to 316 conditions per place. [2023-11-06 22:51:22,336 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 26 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-06 22:51:22,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 274 flow [2023-11-06 22:51:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-06 22:51:22,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2023-11-06 22:51:22,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-06 22:51:22,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-06 22:51:22,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:22,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-06 22:51:22,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 22:51:22,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:22,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 22:51:22,341 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 182 flow. Second operand 3 states and 155 transitions. [2023-11-06 22:51:22,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 274 flow [2023-11-06 22:51:22,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:22,344 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 168 flow [2023-11-06 22:51:22,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-06 22:51:22,345 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-11-06 22:51:22,345 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 168 flow [2023-11-06 22:51:22,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:51:22,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:22,346 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:51:22,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:51:22,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:51:22,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash -856893148, now seen corresponding path program 1 times [2023-11-06 22:51:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:22,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283255112] [2023-11-06 22:51:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:22,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:22,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:22,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:22,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:22,369 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-06 22:51:22,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-06 22:51:22,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-06 22:51:22,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-06 22:51:22,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-06 22:51:22,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:51:22,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:22,371 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:22,371 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:51:22,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:22,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 180 flow [2023-11-06 22:51:22,407 INFO L124 PetriNetUnfolderBase]: 5/126 cut-off events. [2023-11-06 22:51:22,407 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:51:22,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 126 events. 5/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 231 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 109. Up to 10 conditions per place. [2023-11-06 22:51:22,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 180 flow [2023-11-06 22:51:22,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 76 transitions, 180 flow [2023-11-06 22:51:22,409 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:22,409 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 180 flow [2023-11-06 22:51:22,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 180 flow [2023-11-06 22:51:22,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 180 flow [2023-11-06 22:51:22,426 INFO L124 PetriNetUnfolderBase]: 5/126 cut-off events. [2023-11-06 22:51:22,426 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:51:22,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 126 events. 5/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 231 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 109. Up to 10 conditions per place. [2023-11-06 22:51:22,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 2816 [2023-11-06 22:51:23,962 INFO L134 LiptonReduction]: Checked pairs total: 4401 [2023-11-06 22:51:23,962 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-11-06 22:51:23,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:23,965 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;@763ff8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:23,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 22:51:23,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:23,967 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:51:23,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:23,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:23,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:23,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:23,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 523410552, now seen corresponding path program 1 times [2023-11-06 22:51:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269231690] [2023-11-06 22:51:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:23,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:23,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269231690] [2023-11-06 22:51:23,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269231690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:23,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:23,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:23,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476553955] [2023-11-06 22:51:23,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:23,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:23,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:23,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:23,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:24,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:24,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 22:51:24,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:24,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:24,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:24,385 INFO L124 PetriNetUnfolderBase]: 2300/3511 cut-off events. [2023-11-06 22:51:24,386 INFO L125 PetriNetUnfolderBase]: For 1374/1374 co-relation queries the response was YES. [2023-11-06 22:51:24,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 3511 events. 2300/3511 cut-off events. For 1374/1374 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 20913 event pairs, 1224 based on Foata normal form. 0/2580 useless extension candidates. Maximal degree in co-relation 1366. Up to 2129 conditions per place. [2023-11-06 22:51:24,419 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-11-06 22:51:24,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 183 flow [2023-11-06 22:51:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2023-11-06 22:51:24,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012722646310432 [2023-11-06 22:51:24,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2023-11-06 22:51:24,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2023-11-06 22:51:24,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:24,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2023-11-06 22:51:24,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 22:51:24,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:24,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:24,424 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 72 flow. Second operand 3 states and 197 transitions. [2023-11-06 22:51:24,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 183 flow [2023-11-06 22:51:24,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 171 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:24,427 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 102 flow [2023-11-06 22:51:24,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-11-06 22:51:24,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-11-06 22:51:24,428 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 102 flow [2023-11-06 22:51:24,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 22:51:24,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:24,429 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:51:24,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:24,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash 683542956, now seen corresponding path program 1 times [2023-11-06 22:51:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750759306] [2023-11-06 22:51:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:24,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750759306] [2023-11-06 22:51:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750759306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777595478] [2023-11-06 22:51:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:24,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:24,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:24,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 22:51:24,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:24,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:24,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:25,061 INFO L124 PetriNetUnfolderBase]: 3060/4717 cut-off events. [2023-11-06 22:51:25,061 INFO L125 PetriNetUnfolderBase]: For 3241/3241 co-relation queries the response was YES. [2023-11-06 22:51:25,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 4717 events. 3060/4717 cut-off events. For 3241/3241 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 30207 event pairs, 1352 based on Foata normal form. 0/3849 useless extension candidates. Maximal degree in co-relation 5674. Up to 2885 conditions per place. [2023-11-06 22:51:25,114 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-11-06 22:51:25,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 244 flow [2023-11-06 22:51:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-11-06 22:51:25,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49363867684478374 [2023-11-06 22:51:25,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-11-06 22:51:25,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-11-06 22:51:25,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:25,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-11-06 22:51:25,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 22:51:25,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:25,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:25,121 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 102 flow. Second operand 3 states and 194 transitions. [2023-11-06 22:51:25,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 244 flow [2023-11-06 22:51:25,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:25,140 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 160 flow [2023-11-06 22:51:25,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-06 22:51:25,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-11-06 22:51:25,142 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 160 flow [2023-11-06 22:51:25,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 22:51:25,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:25,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:51:25,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:25,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -283563023, now seen corresponding path program 1 times [2023-11-06 22:51:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:25,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362406414] [2023-11-06 22:51:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362406414] [2023-11-06 22:51:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362406414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349119955] [2023-11-06 22:51:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:25,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:25,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 22:51:25,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:25,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:25,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:25,720 INFO L124 PetriNetUnfolderBase]: 2474/3707 cut-off events. [2023-11-06 22:51:25,720 INFO L125 PetriNetUnfolderBase]: For 3539/3539 co-relation queries the response was YES. [2023-11-06 22:51:25,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 3707 events. 2474/3707 cut-off events. For 3539/3539 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 22883 event pairs, 472 based on Foata normal form. 0/3135 useless extension candidates. Maximal degree in co-relation 11063. Up to 3026 conditions per place. [2023-11-06 22:51:25,755 INFO L140 encePairwiseOnDemand]: 129/131 looper letters, 41 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 22:51:25,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 323 flow [2023-11-06 22:51:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-06 22:51:25,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910941475826972 [2023-11-06 22:51:25,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-06 22:51:25,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-06 22:51:25,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:25,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-06 22:51:25,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 22:51:25,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:25,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:25,760 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 160 flow. Second operand 3 states and 193 transitions. [2023-11-06 22:51:25,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 323 flow [2023-11-06 22:51:25,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:25,778 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 144 flow [2023-11-06 22:51:25,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 22:51:25,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-11-06 22:51:25,780 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 144 flow [2023-11-06 22:51:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 22:51:25,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:25,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:25,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:51:25,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:25,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:25,782 INFO L85 PathProgramCache]: Analyzing trace with hash -285002652, now seen corresponding path program 1 times [2023-11-06 22:51:25,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:25,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571655541] [2023-11-06 22:51:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:25,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571655541] [2023-11-06 22:51:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571655541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:25,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009570379] [2023-11-06 22:51:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:25,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:25,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:25,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 22:51:25,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:25,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:25,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:26,206 INFO L124 PetriNetUnfolderBase]: 1993/3029 cut-off events. [2023-11-06 22:51:26,206 INFO L125 PetriNetUnfolderBase]: For 2412/2412 co-relation queries the response was YES. [2023-11-06 22:51:26,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 3029 events. 1993/3029 cut-off events. For 2412/2412 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 18194 event pairs, 335 based on Foata normal form. 0/2587 useless extension candidates. Maximal degree in co-relation 4391. Up to 2450 conditions per place. [2023-11-06 22:51:26,235 INFO L140 encePairwiseOnDemand]: 129/131 looper letters, 38 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 22:51:26,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 284 flow [2023-11-06 22:51:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2023-11-06 22:51:26,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48346055979643765 [2023-11-06 22:51:26,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2023-11-06 22:51:26,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2023-11-06 22:51:26,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:26,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2023-11-06 22:51:26,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 22:51:26,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:26,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:26,242 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 144 flow. Second operand 3 states and 190 transitions. [2023-11-06 22:51:26,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 284 flow [2023-11-06 22:51:26,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:26,246 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 142 flow [2023-11-06 22:51:26,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-11-06 22:51:26,246 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-11-06 22:51:26,246 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 142 flow [2023-11-06 22:51:26,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 22:51:26,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:26,247 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:26,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:51:26,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:26,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1940065587, now seen corresponding path program 1 times [2023-11-06 22:51:26,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:26,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645355059] [2023-11-06 22:51:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:26,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645355059] [2023-11-06 22:51:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645355059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:26,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472692672] [2023-11-06 22:51:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:26,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:26,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:26,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:26,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 22:51:26,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:26,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:26,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:26,736 INFO L124 PetriNetUnfolderBase]: 2430/3913 cut-off events. [2023-11-06 22:51:26,736 INFO L125 PetriNetUnfolderBase]: For 3913/3913 co-relation queries the response was YES. [2023-11-06 22:51:26,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 3913 events. 2430/3913 cut-off events. For 3913/3913 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 26068 event pairs, 988 based on Foata normal form. 0/3420 useless extension candidates. Maximal degree in co-relation 6516. Up to 2459 conditions per place. [2023-11-06 22:51:26,809 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-11-06 22:51:26,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 313 flow [2023-11-06 22:51:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-06 22:51:26,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48091603053435117 [2023-11-06 22:51:26,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-06 22:51:26,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-06 22:51:26,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:26,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-06 22:51:26,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 22:51:26,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:26,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:26,813 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 142 flow. Second operand 3 states and 189 transitions. [2023-11-06 22:51:26,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 313 flow [2023-11-06 22:51:26,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:26,819 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 266 flow [2023-11-06 22:51:26,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-11-06 22:51:26,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-11-06 22:51:26,820 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 266 flow [2023-11-06 22:51:26,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 22:51:26,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:26,821 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:26,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:51:26,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:26,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 12494235, now seen corresponding path program 1 times [2023-11-06 22:51:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235671135] [2023-11-06 22:51:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:26,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235671135] [2023-11-06 22:51:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235671135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216086996] [2023-11-06 22:51:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 22:51:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:26,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:27,307 INFO L124 PetriNetUnfolderBase]: 1955/3099 cut-off events. [2023-11-06 22:51:27,307 INFO L125 PetriNetUnfolderBase]: For 5227/5227 co-relation queries the response was YES. [2023-11-06 22:51:27,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 3099 events. 1955/3099 cut-off events. For 5227/5227 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 19724 event pairs, 409 based on Foata normal form. 204/3066 useless extension candidates. Maximal degree in co-relation 6123. Up to 2442 conditions per place. [2023-11-06 22:51:27,333 INFO L140 encePairwiseOnDemand]: 129/131 looper letters, 45 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2023-11-06 22:51:27,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 449 flow [2023-11-06 22:51:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2023-11-06 22:51:27,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758269720101781 [2023-11-06 22:51:27,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2023-11-06 22:51:27,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2023-11-06 22:51:27,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:27,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2023-11-06 22:51:27,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 22:51:27,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:27,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:27,338 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 266 flow. Second operand 3 states and 187 transitions. [2023-11-06 22:51:27,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 449 flow [2023-11-06 22:51:27,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:27,348 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 244 flow [2023-11-06 22:51:27,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-06 22:51:27,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2023-11-06 22:51:27,349 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 244 flow [2023-11-06 22:51:27,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 22:51:27,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:27,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:51:27,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:27,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -256205362, now seen corresponding path program 1 times [2023-11-06 22:51:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:27,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343845056] [2023-11-06 22:51:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:27,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343845056] [2023-11-06 22:51:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343845056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289311353] [2023-11-06 22:51:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:27,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:27,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 22:51:27,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:27,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:27,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:27,902 INFO L124 PetriNetUnfolderBase]: 2132/3676 cut-off events. [2023-11-06 22:51:27,902 INFO L125 PetriNetUnfolderBase]: For 5945/5945 co-relation queries the response was YES. [2023-11-06 22:51:27,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12053 conditions, 3676 events. 2132/3676 cut-off events. For 5945/5945 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 25918 event pairs, 890 based on Foata normal form. 0/3493 useless extension candidates. Maximal degree in co-relation 6009. Up to 2397 conditions per place. [2023-11-06 22:51:27,940 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 33 selfloop transitions, 21 changer transitions 0/57 dead transitions. [2023-11-06 22:51:27,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 492 flow [2023-11-06 22:51:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-11-06 22:51:27,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732824427480916 [2023-11-06 22:51:27,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-11-06 22:51:27,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-11-06 22:51:27,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:27,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-11-06 22:51:27,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 22:51:27,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:27,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:27,946 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 244 flow. Second operand 3 states and 186 transitions. [2023-11-06 22:51:27,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 492 flow [2023-11-06 22:51:27,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:27,962 INFO L231 Difference]: Finished difference. Result has 40 places, 50 transitions, 462 flow [2023-11-06 22:51:27,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=40, PETRI_TRANSITIONS=50} [2023-11-06 22:51:27,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2023-11-06 22:51:27,963 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 50 transitions, 462 flow [2023-11-06 22:51:27,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 22:51:27,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:27,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:51:27,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:27,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash 647571408, now seen corresponding path program 1 times [2023-11-06 22:51:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518518952] [2023-11-06 22:51:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:28,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:28,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518518952] [2023-11-06 22:51:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518518952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:28,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:28,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488256808] [2023-11-06 22:51:28,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:28,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:28,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:28,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2023-11-06 22:51:28,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 50 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 22:51:28,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:28,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2023-11-06 22:51:28,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:28,502 INFO L124 PetriNetUnfolderBase]: 1771/3145 cut-off events. [2023-11-06 22:51:28,503 INFO L125 PetriNetUnfolderBase]: For 8201/8201 co-relation queries the response was YES. [2023-11-06 22:51:28,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12124 conditions, 3145 events. 1771/3145 cut-off events. For 8201/8201 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 22248 event pairs, 569 based on Foata normal form. 170/3302 useless extension candidates. Maximal degree in co-relation 6035. Up to 1944 conditions per place. [2023-11-06 22:51:28,529 INFO L140 encePairwiseOnDemand]: 129/131 looper letters, 54 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-11-06 22:51:28,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 707 flow [2023-11-06 22:51:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-06 22:51:28,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681933842239186 [2023-11-06 22:51:28,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-06 22:51:28,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-06 22:51:28,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:28,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-06 22:51:28,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 22:51:28,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:28,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 22:51:28,534 INFO L175 Difference]: Start difference. First operand has 40 places, 50 transitions, 462 flow. Second operand 3 states and 184 transitions. [2023-11-06 22:51:28,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 707 flow [2023-11-06 22:51:28,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 65 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:28,550 INFO L231 Difference]: Finished difference. Result has 39 places, 49 transitions, 432 flow [2023-11-06 22:51:28,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=39, PETRI_TRANSITIONS=49} [2023-11-06 22:51:28,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-11-06 22:51:28,551 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 49 transitions, 432 flow [2023-11-06 22:51:28,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 22:51:28,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:28,551 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:28,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:51:28,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-06 22:51:28,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1403270360, now seen corresponding path program 1 times [2023-11-06 22:51:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:28,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599741221] [2023-11-06 22:51:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:28,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:28,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:28,581 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:28,583 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-06 22:51:28,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-06 22:51:28,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-06 22:51:28,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-06 22:51:28,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-06 22:51:28,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-06 22:51:28,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:51:28,585 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:28,585 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:28,585 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-06 22:51:28,612 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:28,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 88 transitions, 216 flow [2023-11-06 22:51:28,631 INFO L124 PetriNetUnfolderBase]: 6/151 cut-off events. [2023-11-06 22:51:28,631 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:51:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 151 events. 6/151 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 292 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 139. Up to 12 conditions per place. [2023-11-06 22:51:28,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 88 transitions, 216 flow [2023-11-06 22:51:28,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 88 transitions, 216 flow [2023-11-06 22:51:28,633 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:28,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 88 transitions, 216 flow [2023-11-06 22:51:28,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 88 transitions, 216 flow [2023-11-06 22:51:28,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 88 transitions, 216 flow [2023-11-06 22:51:28,647 INFO L124 PetriNetUnfolderBase]: 6/151 cut-off events. [2023-11-06 22:51:28,647 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:51:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 151 events. 6/151 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 292 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 139. Up to 12 conditions per place. [2023-11-06 22:51:28,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 4180 [2023-11-06 22:51:30,233 INFO L134 LiptonReduction]: Checked pairs total: 6550 [2023-11-06 22:51:30,233 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-11-06 22:51:30,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:30,235 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;@763ff8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:30,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:51:30,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:30,237 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:51:30,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:30,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:30,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:30,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:30,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash 678864338, now seen corresponding path program 1 times [2023-11-06 22:51:30,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:30,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561282155] [2023-11-06 22:51:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:30,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:30,269 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 22:51:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:30,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561282155] [2023-11-06 22:51:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561282155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:30,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703465318] [2023-11-06 22:51:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:30,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:30,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:51:30,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:30,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:30,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:32,189 INFO L124 PetriNetUnfolderBase]: 12384/17359 cut-off events. [2023-11-06 22:51:32,189 INFO L125 PetriNetUnfolderBase]: For 8948/8948 co-relation queries the response was YES. [2023-11-06 22:51:32,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36660 conditions, 17359 events. 12384/17359 cut-off events. For 8948/8948 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 107419 event pairs, 6940 based on Foata normal form. 0/12846 useless extension candidates. Maximal degree in co-relation 7478. Up to 11057 conditions per place. [2023-11-06 22:51:32,326 INFO L140 encePairwiseOnDemand]: 143/151 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-11-06 22:51:32,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 238 flow [2023-11-06 22:51:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-11-06 22:51:32,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055187637969095 [2023-11-06 22:51:32,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-11-06 22:51:32,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-11-06 22:51:32,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:32,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-11-06 22:51:32,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 22:51:32,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:32,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:32,332 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 92 flow. Second operand 3 states and 229 transitions. [2023-11-06 22:51:32,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 238 flow [2023-11-06 22:51:32,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 214 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:32,343 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 124 flow [2023-11-06 22:51:32,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-11-06 22:51:32,344 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-11-06 22:51:32,344 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 124 flow [2023-11-06 22:51:32,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:51:32,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:32,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:32,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:51:32,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:32,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1270586221, now seen corresponding path program 1 times [2023-11-06 22:51:32,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:32,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227499843] [2023-11-06 22:51:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:32,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227499843] [2023-11-06 22:51:32,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227499843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:32,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:32,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:32,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594146577] [2023-11-06 22:51:32,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:32,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:32,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:32,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:32,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:51:32,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:32,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:32,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:34,873 INFO L124 PetriNetUnfolderBase]: 17214/24347 cut-off events. [2023-11-06 22:51:34,873 INFO L125 PetriNetUnfolderBase]: For 17453/17453 co-relation queries the response was YES. [2023-11-06 22:51:34,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61701 conditions, 24347 events. 17214/24347 cut-off events. For 17453/17453 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 161828 event pairs, 8064 based on Foata normal form. 0/19341 useless extension candidates. Maximal degree in co-relation 29058. Up to 15695 conditions per place. [2023-11-06 22:51:35,043 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2023-11-06 22:51:35,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 307 flow [2023-11-06 22:51:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-11-06 22:51:35,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988962472406181 [2023-11-06 22:51:35,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-11-06 22:51:35,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-11-06 22:51:35,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:35,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-11-06 22:51:35,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 22:51:35,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:35,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:35,048 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 124 flow. Second operand 3 states and 226 transitions. [2023-11-06 22:51:35,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 307 flow [2023-11-06 22:51:35,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:35,303 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 200 flow [2023-11-06 22:51:35,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-11-06 22:51:35,304 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-11-06 22:51:35,305 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 200 flow [2023-11-06 22:51:35,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:51:35,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:35,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:51:35,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:35,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 735288487, now seen corresponding path program 1 times [2023-11-06 22:51:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141475222] [2023-11-06 22:51:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:35,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141475222] [2023-11-06 22:51:35,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141475222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:35,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727330573] [2023-11-06 22:51:35,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:35,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:35,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:35,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:51:35,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:35,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:35,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:37,026 INFO L124 PetriNetUnfolderBase]: 13946/19127 cut-off events. [2023-11-06 22:51:37,026 INFO L125 PetriNetUnfolderBase]: For 18150/18150 co-relation queries the response was YES. [2023-11-06 22:51:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56882 conditions, 19127 events. 13946/19127 cut-off events. For 18150/18150 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 121218 event pairs, 2700 based on Foata normal form. 0/15793 useless extension candidates. Maximal degree in co-relation 56734. Up to 15496 conditions per place. [2023-11-06 22:51:37,186 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-06 22:51:37,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 412 flow [2023-11-06 22:51:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-06 22:51:37,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966887417218543 [2023-11-06 22:51:37,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-06 22:51:37,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-06 22:51:37,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:37,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-06 22:51:37,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 22:51:37,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:37,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:37,195 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 200 flow. Second operand 3 states and 225 transitions. [2023-11-06 22:51:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 412 flow [2023-11-06 22:51:37,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:37,364 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 180 flow [2023-11-06 22:51:37,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:51:37,365 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-11-06 22:51:37,365 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 180 flow [2023-11-06 22:51:37,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:51:37,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:37,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:37,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:51:37,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:37,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash 733471256, now seen corresponding path program 1 times [2023-11-06 22:51:37,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:37,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857923037] [2023-11-06 22:51:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:37,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:37,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857923037] [2023-11-06 22:51:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857923037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:37,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:37,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600726013] [2023-11-06 22:51:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:37,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:37,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:37,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:37,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:37,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:37,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:51:37,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:37,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:37,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:38,913 INFO L124 PetriNetUnfolderBase]: 11269/15577 cut-off events. [2023-11-06 22:51:38,913 INFO L125 PetriNetUnfolderBase]: For 12270/12270 co-relation queries the response was YES. [2023-11-06 22:51:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44801 conditions, 15577 events. 11269/15577 cut-off events. For 12270/12270 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 96119 event pairs, 1895 based on Foata normal form. 0/12813 useless extension candidates. Maximal degree in co-relation 23175. Up to 12576 conditions per place. [2023-11-06 22:51:39,122 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-06 22:51:39,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 367 flow [2023-11-06 22:51:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-11-06 22:51:39,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900662251655629 [2023-11-06 22:51:39,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-11-06 22:51:39,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-11-06 22:51:39,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:39,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-11-06 22:51:39,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 22:51:39,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:39,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:39,126 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 180 flow. Second operand 3 states and 222 transitions. [2023-11-06 22:51:39,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 367 flow [2023-11-06 22:51:39,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:39,133 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 178 flow [2023-11-06 22:51:39,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-06 22:51:39,133 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-11-06 22:51:39,133 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 178 flow [2023-11-06 22:51:39,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:51:39,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:39,134 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:39,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:51:39,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:39,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1269421369, now seen corresponding path program 1 times [2023-11-06 22:51:39,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:39,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245698506] [2023-11-06 22:51:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:39,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:39,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:39,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245698506] [2023-11-06 22:51:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245698506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:39,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119071204] [2023-11-06 22:51:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:39,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:39,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 22:51:39,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:39,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:39,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:41,289 INFO L124 PetriNetUnfolderBase]: 14850/21601 cut-off events. [2023-11-06 22:51:41,289 INFO L125 PetriNetUnfolderBase]: For 23674/23674 co-relation queries the response was YES. [2023-11-06 22:51:41,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61240 conditions, 21601 events. 14850/21601 cut-off events. For 23674/23674 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 150103 event pairs, 6228 based on Foata normal form. 0/18162 useless extension candidates. Maximal degree in co-relation 35036. Up to 14235 conditions per place. [2023-11-06 22:51:41,397 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 40 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2023-11-06 22:51:41,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 412 flow [2023-11-06 22:51:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-11-06 22:51:41,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878587196467991 [2023-11-06 22:51:41,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-11-06 22:51:41,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-11-06 22:51:41,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:41,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-11-06 22:51:41,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 22:51:41,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:41,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:41,402 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 178 flow. Second operand 3 states and 221 transitions. [2023-11-06 22:51:41,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 412 flow [2023-11-06 22:51:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:41,436 INFO L231 Difference]: Finished difference. Result has 44 places, 49 transitions, 350 flow [2023-11-06 22:51:41,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=44, PETRI_TRANSITIONS=49} [2023-11-06 22:51:41,436 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-11-06 22:51:41,437 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 49 transitions, 350 flow [2023-11-06 22:51:41,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 22:51:41,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:41,437 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:41,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:51:41,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:41,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash -697353366, now seen corresponding path program 1 times [2023-11-06 22:51:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882244684] [2023-11-06 22:51:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:41,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882244684] [2023-11-06 22:51:41,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882244684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:41,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:41,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:41,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820260929] [2023-11-06 22:51:41,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:41,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:41,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:41,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:41,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:41,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:41,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:51:41,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:41,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:41,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:42,917 INFO L124 PetriNetUnfolderBase]: 11925/16849 cut-off events. [2023-11-06 22:51:42,917 INFO L125 PetriNetUnfolderBase]: For 29495/29495 co-relation queries the response was YES. [2023-11-06 22:51:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59446 conditions, 16849 events. 11925/16849 cut-off events. For 29495/29495 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 110421 event pairs, 2241 based on Foata normal form. 954/15750 useless extension candidates. Maximal degree in co-relation 33856. Up to 13484 conditions per place. [2023-11-06 22:51:43,012 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 64 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-06 22:51:43,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 622 flow [2023-11-06 22:51:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-11-06 22:51:43,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48344370860927155 [2023-11-06 22:51:43,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-11-06 22:51:43,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-11-06 22:51:43,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:43,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-11-06 22:51:43,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 22:51:43,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:43,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:43,017 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 350 flow. Second operand 3 states and 219 transitions. [2023-11-06 22:51:43,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 622 flow [2023-11-06 22:51:43,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:43,064 INFO L231 Difference]: Finished difference. Result has 43 places, 48 transitions, 320 flow [2023-11-06 22:51:43,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=43, PETRI_TRANSITIONS=48} [2023-11-06 22:51:43,065 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-11-06 22:51:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 48 transitions, 320 flow [2023-11-06 22:51:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:51:43,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 22:51:43,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:43,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 526764542, now seen corresponding path program 1 times [2023-11-06 22:51:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531700508] [2023-11-06 22:51:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531700508] [2023-11-06 22:51:43,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531700508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:43,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:43,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:43,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937911960] [2023-11-06 22:51:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:43,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:43,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:43,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 22:51:43,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:43,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:43,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:45,164 INFO L124 PetriNetUnfolderBase]: 14852/22111 cut-off events. [2023-11-06 22:51:45,164 INFO L125 PetriNetUnfolderBase]: For 40827/40827 co-relation queries the response was YES. [2023-11-06 22:51:45,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72356 conditions, 22111 events. 14852/22111 cut-off events. For 40827/40827 co-relation queries the response was YES. Maximal size of possible extension queue 1850. Compared 160671 event pairs, 5610 based on Foata normal form. 0/19811 useless extension candidates. Maximal degree in co-relation 41488. Up to 14769 conditions per place. [2023-11-06 22:51:45,295 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 47 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2023-11-06 22:51:45,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 79 transitions, 687 flow [2023-11-06 22:51:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-06 22:51:45,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48123620309050774 [2023-11-06 22:51:45,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-06 22:51:45,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-06 22:51:45,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:45,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-06 22:51:45,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 22:51:45,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:45,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:45,299 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 320 flow. Second operand 3 states and 218 transitions. [2023-11-06 22:51:45,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 79 transitions, 687 flow [2023-11-06 22:51:45,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 79 transitions, 679 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:45,345 INFO L231 Difference]: Finished difference. Result has 46 places, 69 transitions, 650 flow [2023-11-06 22:51:45,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=46, PETRI_TRANSITIONS=69} [2023-11-06 22:51:45,346 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-11-06 22:51:45,346 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 69 transitions, 650 flow [2023-11-06 22:51:45,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 22:51:45,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:45,347 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:45,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 22:51:45,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:45,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:45,347 INFO L85 PathProgramCache]: Analyzing trace with hash -850165272, now seen corresponding path program 1 times [2023-11-06 22:51:45,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951206255] [2023-11-06 22:51:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951206255] [2023-11-06 22:51:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951206255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:45,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918421955] [2023-11-06 22:51:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:45,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:45,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 69 transitions, 650 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:51:45,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:45,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:47,120 INFO L124 PetriNetUnfolderBase]: 11939/17421 cut-off events. [2023-11-06 22:51:47,120 INFO L125 PetriNetUnfolderBase]: For 47319/47319 co-relation queries the response was YES. [2023-11-06 22:51:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69707 conditions, 17421 events. 11939/17421 cut-off events. For 47319/47319 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 121224 event pairs, 2639 based on Foata normal form. 1012/17369 useless extension candidates. Maximal degree in co-relation 39902. Up to 13486 conditions per place. [2023-11-06 22:51:47,431 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 86 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2023-11-06 22:51:47,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 1073 flow [2023-11-06 22:51:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-11-06 22:51:47,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768211920529801 [2023-11-06 22:51:47,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-11-06 22:51:47,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-11-06 22:51:47,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:47,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-11-06 22:51:47,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 22:51:47,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:47,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:47,435 INFO L175 Difference]: Start difference. First operand has 46 places, 69 transitions, 650 flow. Second operand 3 states and 216 transitions. [2023-11-06 22:51:47,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 1073 flow [2023-11-06 22:51:47,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:47,495 INFO L231 Difference]: Finished difference. Result has 45 places, 68 transitions, 604 flow [2023-11-06 22:51:47,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=45, PETRI_TRANSITIONS=68} [2023-11-06 22:51:47,496 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-11-06 22:51:47,496 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 68 transitions, 604 flow [2023-11-06 22:51:47,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:51:47,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:47,497 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 22:51:47,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:47,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 914502192, now seen corresponding path program 1 times [2023-11-06 22:51:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507036938] [2023-11-06 22:51:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:51:47,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:47,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507036938] [2023-11-06 22:51:47,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507036938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:47,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:47,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:47,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383282163] [2023-11-06 22:51:47,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:47,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:47,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:47,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:47,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:47,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 68 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 22:51:47,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:47,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:47,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:49,858 INFO L124 PetriNetUnfolderBase]: 13634/21204 cut-off events. [2023-11-06 22:51:49,859 INFO L125 PetriNetUnfolderBase]: For 57977/57977 co-relation queries the response was YES. [2023-11-06 22:51:49,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78743 conditions, 21204 events. 13634/21204 cut-off events. For 57977/57977 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 163595 event pairs, 5130 based on Foata normal form. 0/20302 useless extension candidates. Maximal degree in co-relation 42344. Up to 14771 conditions per place. [2023-11-06 22:51:50,018 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 58 selfloop transitions, 49 changer transitions 0/110 dead transitions. [2023-11-06 22:51:50,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 110 transitions, 1214 flow [2023-11-06 22:51:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-11-06 22:51:50,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746136865342163 [2023-11-06 22:51:50,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-11-06 22:51:50,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-11-06 22:51:50,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:50,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-11-06 22:51:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:51:50,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:50,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:50,025 INFO L175 Difference]: Start difference. First operand has 45 places, 68 transitions, 604 flow. Second operand 3 states and 215 transitions. [2023-11-06 22:51:50,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 110 transitions, 1214 flow [2023-11-06 22:51:50,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 110 transitions, 1198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:50,093 INFO L231 Difference]: Finished difference. Result has 48 places, 101 transitions, 1214 flow [2023-11-06 22:51:50,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1214, PETRI_PLACES=48, PETRI_TRANSITIONS=101} [2023-11-06 22:51:50,094 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-11-06 22:51:50,094 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 101 transitions, 1214 flow [2023-11-06 22:51:50,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 22:51:50,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:50,094 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:50,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 22:51:50,095 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:50,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1715200371, now seen corresponding path program 1 times [2023-11-06 22:51:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:50,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333990155] [2023-11-06 22:51:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:51:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333990155] [2023-11-06 22:51:50,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333990155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:50,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:50,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:50,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031389163] [2023-11-06 22:51:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:50,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 151 [2023-11-06 22:51:50,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 101 transitions, 1214 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 22:51:50,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:50,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 151 [2023-11-06 22:51:50,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:52,097 INFO L124 PetriNetUnfolderBase]: 11331/18039 cut-off events. [2023-11-06 22:51:52,098 INFO L125 PetriNetUnfolderBase]: For 72733/72733 co-relation queries the response was YES. [2023-11-06 22:51:52,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77448 conditions, 18039 events. 11331/18039 cut-off events. For 72733/72733 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 140688 event pairs, 3585 based on Foata normal form. 862/18861 useless extension candidates. Maximal degree in co-relation 41752. Up to 10940 conditions per place. [2023-11-06 22:51:52,246 INFO L140 encePairwiseOnDemand]: 149/151 looper letters, 118 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2023-11-06 22:51:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 137 transitions, 1876 flow [2023-11-06 22:51:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-11-06 22:51:52,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47019867549668876 [2023-11-06 22:51:52,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-11-06 22:51:52,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-11-06 22:51:52,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:52,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-11-06 22:51:52,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 22:51:52,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:52,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 22:51:52,252 INFO L175 Difference]: Start difference. First operand has 48 places, 101 transitions, 1214 flow. Second operand 3 states and 213 transitions. [2023-11-06 22:51:52,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 137 transitions, 1876 flow [2023-11-06 22:51:52,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 137 transitions, 1778 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:52,370 INFO L231 Difference]: Finished difference. Result has 47 places, 100 transitions, 1144 flow [2023-11-06 22:51:52,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1144, PETRI_PLACES=47, PETRI_TRANSITIONS=100} [2023-11-06 22:51:52,371 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-11-06 22:51:52,371 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 100 transitions, 1144 flow [2023-11-06 22:51:52,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 22:51:52,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:52,372 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:52,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 22:51:52,372 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-06 22:51:52,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1635305355, now seen corresponding path program 1 times [2023-11-06 22:51:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:52,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230053717] [2023-11-06 22:51:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:52,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:52,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:52,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:52,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-06 22:51:52,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-06 22:51:52,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-06 22:51:52,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-06 22:51:52,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-06 22:51:52,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-06 22:51:52,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-06 22:51:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 22:51:52,404 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:52,405 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:52,405 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-06 22:51:52,436 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:52,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 100 transitions, 254 flow [2023-11-06 22:51:52,461 INFO L124 PetriNetUnfolderBase]: 7/176 cut-off events. [2023-11-06 22:51:52,461 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 22:51:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 176 events. 7/176 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 351 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 170. Up to 14 conditions per place. [2023-11-06 22:51:52,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 100 transitions, 254 flow [2023-11-06 22:51:52,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 100 transitions, 254 flow [2023-11-06 22:51:52,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:52,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 100 transitions, 254 flow [2023-11-06 22:51:52,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 100 transitions, 254 flow [2023-11-06 22:51:52,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 100 transitions, 254 flow [2023-11-06 22:51:52,487 INFO L124 PetriNetUnfolderBase]: 7/176 cut-off events. [2023-11-06 22:51:52,487 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 22:51:52,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 176 events. 7/176 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 351 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 170. Up to 14 conditions per place. [2023-11-06 22:51:52,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 5808 [2023-11-06 22:51:54,345 INFO L134 LiptonReduction]: Checked pairs total: 8366 [2023-11-06 22:51:54,345 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-06 22:51:54,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:54,347 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;@763ff8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:54,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 22:51:54,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:54,350 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:51:54,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:54,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:54,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:54,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 22:51:54,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash 853553097, now seen corresponding path program 1 times [2023-11-06 22:51:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851050864] [2023-11-06 22:51:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:54,378 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 22:51:54,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851050864] [2023-11-06 22:51:54,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851050864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:54,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:54,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353472236] [2023-11-06 22:51:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:54,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:54,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:51:54,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:51:54,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:54,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:51:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:00,816 INFO L124 PetriNetUnfolderBase]: 62014/82081 cut-off events. [2023-11-06 22:52:00,816 INFO L125 PetriNetUnfolderBase]: For 52408/52408 co-relation queries the response was YES. [2023-11-06 22:52:00,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174026 conditions, 82081 events. 62014/82081 cut-off events. For 52408/52408 co-relation queries the response was YES. Maximal size of possible extension queue 4290. Compared 524927 event pairs, 35952 based on Foata normal form. 0/59906 useless extension candidates. Maximal degree in co-relation 37143. Up to 54027 conditions per place. [2023-11-06 22:52:01,517 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 41 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-06 22:52:01,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 297 flow [2023-11-06 22:52:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-06 22:52:01,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2023-11-06 22:52:01,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-06 22:52:01,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-06 22:52:01,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:01,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-06 22:52:01,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 22:52:01,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 22:52:01,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 22:52:01,521 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 114 flow. Second operand 3 states and 261 transitions. [2023-11-06 22:52:01,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 297 flow [2023-11-06 22:52:01,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 257 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-06 22:52:01,543 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 146 flow [2023-11-06 22:52:01,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-06 22:52:01,544 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-11-06 22:52:01,544 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 146 flow [2023-11-06 22:52:01,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:52:01,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:01,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:01,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 22:52:01,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 22:52:01,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1850886608, now seen corresponding path program 1 times [2023-11-06 22:52:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:01,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776902648] [2023-11-06 22:52:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:52:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776902648] [2023-11-06 22:52:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776902648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:01,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362396767] [2023-11-06 22:52:01,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:01,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:01,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:52:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 22:52:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:01,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:52:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand