./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/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_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/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_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/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 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:23:00,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:23:00,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:23:00,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:23:00,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:23:00,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:23:00,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:23:00,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:23:00,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:23:00,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:23:00,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:23:00,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:23:00,257 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:23:00,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:23:00,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:23:00,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:23:00,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:23:00,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:23:00,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:23:00,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:23:00,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:23:00,263 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:23:00,264 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:23:00,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:23:00,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:23:00,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:23:00,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:23:00,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:23:00,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:00,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:23:00,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:23:00,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:23:00,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:23:00,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:23:00,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:23:00,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:23:00,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:23:00,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:23:00,271 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:23:00,271 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_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 [2023-11-06 22:23:00,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:23:00,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:23:00,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:23:00,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:23:00,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:23:00,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c [2023-11-06 22:23:04,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:23:04,480 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:23:04,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c [2023-11-06 22:23:04,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/data/8b6398d80/b86a6771c815442a9858fb2e2ae8b216/FLAGdd45a423c [2023-11-06 22:23:04,514 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/data/8b6398d80/b86a6771c815442a9858fb2e2ae8b216 [2023-11-06 22:23:04,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:23:04,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:23:04,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:04,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:23:04,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:23:04,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:04" (1/1) ... [2023-11-06 22:23:04,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a845a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:04, skipping insertion in model container [2023-11-06 22:23:04,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:04" (1/1) ... [2023-11-06 22:23:04,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:23:05,037 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_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2023-11-06 22:23:05,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:05,084 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:23:05,311 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_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2023-11-06 22:23:05,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:05,371 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:23:05,373 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:23:05,383 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:23:05,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05 WrapperNode [2023-11-06 22:23:05,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:05,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:05,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:23:05,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:23:05,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,583 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2376 [2023-11-06 22:23:05,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:05,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:23:05,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:23:05,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:23:05,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:23:05,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:23:05,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:23:05,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:23:05,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (1/1) ... [2023-11-06 22:23:05,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:05,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:05,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:23:05,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:23:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:23:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:23:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:23:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:23:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:23:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:23:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:23:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:23:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:23:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:23:05,866 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 22:23:06,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:23:06,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:23:08,964 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:23:12,827 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:23:12,828 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-06 22:23:12,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:12 BoogieIcfgContainer [2023-11-06 22:23:12,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:23:12,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:23:12,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:23:12,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:23:12,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:23:04" (1/3) ... [2023-11-06 22:23:12,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382624a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:12, skipping insertion in model container [2023-11-06 22:23:12,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:05" (2/3) ... [2023-11-06 22:23:12,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382624a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:12, skipping insertion in model container [2023-11-06 22:23:12,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:12" (3/3) ... [2023-11-06 22:23:12,851 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-trans.wvr.c [2023-11-06 22:23:12,862 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:23:12,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:23:12,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:23:12,876 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:23:13,433 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:23:13,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 799 transitions, 1619 flow [2023-11-06 22:23:14,079 INFO L124 PetriNetUnfolderBase]: 79/796 cut-off events. [2023-11-06 22:23:14,080 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:23:14,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 796 events. 79/796 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 929 event pairs, 0 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 713. Up to 7 conditions per place. [2023-11-06 22:23:14,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 730 places, 799 transitions, 1619 flow [2023-11-06 22:23:14,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 716 places, 785 transitions, 1588 flow [2023-11-06 22:23:14,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:23:14,126 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 716 places, 785 transitions, 1588 flow [2023-11-06 22:23:14,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 716 places, 785 transitions, 1588 flow [2023-11-06 22:23:14,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 785 transitions, 1588 flow [2023-11-06 22:23:14,437 INFO L124 PetriNetUnfolderBase]: 79/785 cut-off events. [2023-11-06 22:23:14,437 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:23:14,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 785 events. 79/785 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 929 event pairs, 0 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 713. Up to 7 conditions per place. [2023-11-06 22:23:14,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 22110 [2023-11-06 22:25:16,043 INFO L134 LiptonReduction]: Checked pairs total: 23181 [2023-11-06 22:25:16,044 INFO L136 LiptonReduction]: Total number of compositions: 942 [2023-11-06 22:25:16,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:16,086 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;@72c82934, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:16,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:25:16,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:16,168 INFO L124 PetriNetUnfolderBase]: 24/57 cut-off events. [2023-11-06 22:25:16,168 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:25:16,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:16,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:16,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:25:16,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1232448901, now seen corresponding path program 1 times [2023-11-06 22:25:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999037047] [2023-11-06 22:25:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:16,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:17,078 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 22:25:17,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999037047] [2023-11-06 22:25:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999037047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:17,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:25:17,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265680765] [2023-11-06 22:25:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:17,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:17,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1741 [2023-11-06 22:25:17,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:17,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:17,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1741 [2023-11-06 22:25:17,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:20,151 INFO L124 PetriNetUnfolderBase]: 873/1099 cut-off events. [2023-11-06 22:25:20,152 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 22:25:20,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1099 events. 873/1099 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2619 event pairs, 333 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1844. Up to 1097 conditions per place. [2023-11-06 22:25:20,167 INFO L140 encePairwiseOnDemand]: 1734/1741 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-11-06 22:25:20,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 262 flow [2023-11-06 22:25:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1996 transitions. [2023-11-06 22:25:20,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38215584912885314 [2023-11-06 22:25:20,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1996 transitions. [2023-11-06 22:25:20,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1996 transitions. [2023-11-06 22:25:20,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:20,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1996 transitions. [2023-11-06 22:25:20,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 665.3333333333334) internal successors, (1996), 3 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:20,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1741.0) internal successors, (6964), 4 states have internal predecessors, (6964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:20,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1741.0) internal successors, (6964), 4 states have internal predecessors, (6964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:20,260 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 134 flow. Second operand 3 states and 1996 transitions. [2023-11-06 22:25:20,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 262 flow [2023-11-06 22:25:20,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:25:20,272 INFO L231 Difference]: Finished difference. Result has 41 places, 61 transitions, 154 flow [2023-11-06 22:25:20,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1741, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=61} [2023-11-06 22:25:20,280 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-06 22:25:20,280 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 61 transitions, 154 flow [2023-11-06 22:25:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:20,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:20,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:25:20,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:25:20,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash -943249550, now seen corresponding path program 1 times [2023-11-06 22:25:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:20,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824615441] [2023-11-06 22:25:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:20,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:25:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:20,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824615441] [2023-11-06 22:25:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824615441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:20,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:20,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:25:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427998392] [2023-11-06 22:25:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:20,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:21,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1741 [2023-11-06 22:25:21,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 654.3333333333334) internal successors, (1963), 3 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:21,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:21,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1741 [2023-11-06 22:25:21,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:23,079 INFO L124 PetriNetUnfolderBase]: 873/1105 cut-off events. [2023-11-06 22:25:23,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:23,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1105 events. 873/1105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2605 event pairs, 333 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 2217. Up to 1100 conditions per place. [2023-11-06 22:25:23,088 INFO L140 encePairwiseOnDemand]: 1728/1741 looper letters, 55 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2023-11-06 22:25:23,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 67 transitions, 300 flow [2023-11-06 22:25:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2002 transitions. [2023-11-06 22:25:23,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833046142063948 [2023-11-06 22:25:23,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2002 transitions. [2023-11-06 22:25:23,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2002 transitions. [2023-11-06 22:25:23,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:23,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2002 transitions. [2023-11-06 22:25:23,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 667.3333333333334) internal successors, (2002), 3 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:23,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1741.0) internal successors, (6964), 4 states have internal predecessors, (6964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:23,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1741.0) internal successors, (6964), 4 states have internal predecessors, (6964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:23,136 INFO L175 Difference]: Start difference. First operand has 41 places, 61 transitions, 154 flow. Second operand 3 states and 2002 transitions. [2023-11-06 22:25:23,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 67 transitions, 300 flow [2023-11-06 22:25:23,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:25:23,143 INFO L231 Difference]: Finished difference. Result has 43 places, 67 transitions, 210 flow [2023-11-06 22:25:23,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1741, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=43, PETRI_TRANSITIONS=67} [2023-11-06 22:25:23,153 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-11-06 22:25:23,153 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 67 transitions, 210 flow [2023-11-06 22:25:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 654.3333333333334) internal successors, (1963), 3 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:23,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:23,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:25:23,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:25:23,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash -409586085, now seen corresponding path program 1 times [2023-11-06 22:25:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:23,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253559181] [2023-11-06 22:25:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:25:23,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253559181] [2023-11-06 22:25:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253559181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296321684] [2023-11-06 22:25:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:23,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:23,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:25:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:24,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:25:24,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:25:24,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:25:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296321684] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:24,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-06 22:25:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555960735] [2023-11-06 22:25:24,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:24,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:25:24,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:25:24,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:25:25,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1741 [2023-11-06 22:25:25,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 67 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 625.625) internal successors, (5005), 8 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:25,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:25,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1741 [2023-11-06 22:25:25,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:28,302 INFO L124 PetriNetUnfolderBase]: 873/1132 cut-off events. [2023-11-06 22:25:28,302 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:25:28,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2340 conditions, 1132 events. 873/1132 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2605 event pairs, 333 based on Foata normal form. 9/607 useless extension candidates. Maximal degree in co-relation 2278. Up to 1097 conditions per place. [2023-11-06 22:25:28,310 INFO L140 encePairwiseOnDemand]: 1716/1741 looper letters, 46 selfloop transitions, 48 changer transitions 0/94 dead transitions. [2023-11-06 22:25:28,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 482 flow [2023-11-06 22:25:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:25:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:25:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5081 transitions. [2023-11-06 22:25:28,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648047099368179 [2023-11-06 22:25:28,333 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5081 transitions. [2023-11-06 22:25:28,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5081 transitions. [2023-11-06 22:25:28,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:28,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5081 transitions. [2023-11-06 22:25:28,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 635.125) internal successors, (5081), 8 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:28,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1741.0) internal successors, (15669), 9 states have internal predecessors, (15669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:28,393 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1741.0) internal successors, (15669), 9 states have internal predecessors, (15669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:28,394 INFO L175 Difference]: Start difference. First operand has 43 places, 67 transitions, 210 flow. Second operand 8 states and 5081 transitions. [2023-11-06 22:25:28,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 482 flow [2023-11-06 22:25:28,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 94 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:25:28,398 INFO L231 Difference]: Finished difference. Result has 50 places, 94 transitions, 428 flow [2023-11-06 22:25:28,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1741, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=50, PETRI_TRANSITIONS=94} [2023-11-06 22:25:28,399 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-11-06 22:25:28,400 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 94 transitions, 428 flow [2023-11-06 22:25:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 625.625) internal successors, (5005), 8 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:28,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:28,403 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:28,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:28,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:25:28,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1223060469, now seen corresponding path program 1 times [2023-11-06 22:25:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491359178] [2023-11-06 22:25:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 22:25:29,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:29,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491359178] [2023-11-06 22:25:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491359178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016694101] [2023-11-06 22:25:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:29,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:29,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:29,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:29,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:25:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:30,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:25:30,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 22:25:30,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 22:25:30,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016694101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:30,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:30,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-11-06 22:25:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928202977] [2023-11-06 22:25:30,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:30,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:25:30,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:25:30,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:25:32,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1741 [2023-11-06 22:25:32,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 94 transitions, 428 flow. Second operand has 17 states, 17 states have (on average 623.4705882352941) internal successors, (10599), 17 states have internal predecessors, (10599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:32,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:32,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1741 [2023-11-06 22:25:32,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:34,628 INFO L124 PetriNetUnfolderBase]: 873/1150 cut-off events. [2023-11-06 22:25:34,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:34,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 1150 events. 873/1150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2620 event pairs, 333 based on Foata normal form. 11/627 useless extension candidates. Maximal degree in co-relation 2380. Up to 1097 conditions per place. [2023-11-06 22:25:34,635 INFO L140 encePairwiseOnDemand]: 1716/1741 looper letters, 46 selfloop transitions, 66 changer transitions 0/112 dead transitions. [2023-11-06 22:25:34,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 754 flow [2023-11-06 22:25:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:25:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:25:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 10050 transitions. [2023-11-06 22:25:34,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36078403216542215 [2023-11-06 22:25:34,675 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 10050 transitions. [2023-11-06 22:25:34,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 10050 transitions. [2023-11-06 22:25:34,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:34,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 10050 transitions. [2023-11-06 22:25:34,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 628.125) internal successors, (10050), 16 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1741.0) internal successors, (29597), 17 states have internal predecessors, (29597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,765 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1741.0) internal successors, (29597), 17 states have internal predecessors, (29597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,765 INFO L175 Difference]: Start difference. First operand has 50 places, 94 transitions, 428 flow. Second operand 16 states and 10050 transitions. [2023-11-06 22:25:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 754 flow [2023-11-06 22:25:34,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 698 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:34,773 INFO L231 Difference]: Finished difference. Result has 67 places, 112 transitions, 670 flow [2023-11-06 22:25:34,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1741, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=67, PETRI_TRANSITIONS=112} [2023-11-06 22:25:34,775 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-11-06 22:25:34,776 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 112 transitions, 670 flow [2023-11-06 22:25:34,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 623.4705882352941) internal successors, (10599), 17 states have internal predecessors, (10599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:34,780 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:34,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:25:34,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:34,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:25:34,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:34,990 INFO L85 PathProgramCache]: Analyzing trace with hash -468635922, now seen corresponding path program 2 times [2023-11-06 22:25:34,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:34,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908034408] [2023-11-06 22:25:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:34,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-06 22:25:35,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908034408] [2023-11-06 22:25:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908034408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590250313] [2023-11-06 22:25:35,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:35,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:35,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:35,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:35,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa107bdb-6a4e-4de8-a96e-92a5eaf21f99/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:25:37,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:25:37,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:37,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:25:37,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:49,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:49,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:49,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:49,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:49,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:49,619 INFO L190 IndexEqualityManager]: detected not equals via solver