./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --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_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/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_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/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_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/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 a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:59:41,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:59:41,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:59:41,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:59:41,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:59:41,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:59:41,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:59:41,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:59:41,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:59:41,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:59:41,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:59:41,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:59:41,433 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:59:41,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:59:41,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:59:41,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:59:41,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:59:41,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:59:41,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:59:41,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:59:41,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:59:41,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:59:41,439 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:59:41,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:59:41,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:59:41,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:59:41,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:59:41,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:59:41,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:41,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:59:41,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:59:41,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:59:41,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:59:41,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:59:41,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:59:41,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:59:41,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:59:41,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:59:41,447 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:59:41,447 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_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 [2023-11-06 21:59:41,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:59:41,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:59:41,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:59:41,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:59:41,824 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:59:41,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-06 21:59:44,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:59:45,345 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:59:45,348 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-06 21:59:45,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/data/48548fd99/f6dca020eb6d4626b0b735d4a08e54d8/FLAG96b5410f3 [2023-11-06 21:59:45,392 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/data/48548fd99/f6dca020eb6d4626b0b735d4a08e54d8 [2023-11-06 21:59:45,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:59:45,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:59:45,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:45,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:59:45,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:59:45,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3cb1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45, skipping insertion in model container [2023-11-06 21:59:45,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:59:45,720 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_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-06 21:59:45,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:46,011 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:59:46,024 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_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-06 21:59:46,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:46,111 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:46,111 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:46,117 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:59:46,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46 WrapperNode [2023-11-06 21:59:46,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:46,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:46,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:59:46,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:59:46,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,194 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2023-11-06 21:59:46,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:46,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:59:46,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:59:46,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:59:46,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:59:46,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:59:46,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:59:46,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:59:46,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (1/1) ... [2023-11-06 21:59:46,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:46,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:46,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:59:46,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:59:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:59:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:59:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:59:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:59:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:59:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 21:59:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 21:59:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 21:59:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 21:59:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:59:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:59:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:59:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:59:46,356 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 21:59:46,519 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:59:46,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:59:46,882 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:59:47,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:59:47,120 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:59:47,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:47 BoogieIcfgContainer [2023-11-06 21:59:47,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:59:47,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:59:47,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:59:47,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:59:47,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:45" (1/3) ... [2023-11-06 21:59:47,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3e4c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:47, skipping insertion in model container [2023-11-06 21:59:47,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:46" (2/3) ... [2023-11-06 21:59:47,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3e4c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:47, skipping insertion in model container [2023-11-06 21:59:47,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:47" (3/3) ... [2023-11-06 21:59:47,138 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-06 21:59:47,147 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:59:47,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:59:47,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 21:59:47,156 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:59:47,261 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:59:47,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 272 flow [2023-11-06 21:59:47,413 INFO L124 PetriNetUnfolderBase]: 2/124 cut-off events. [2023-11-06 21:59:47,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:47,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 2/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-06 21:59:47,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 128 transitions, 272 flow [2023-11-06 21:59:47,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 124 transitions, 260 flow [2023-11-06 21:59:47,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:59:47,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 124 transitions, 260 flow [2023-11-06 21:59:47,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 124 transitions, 260 flow [2023-11-06 21:59:47,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 124 transitions, 260 flow [2023-11-06 21:59:47,535 INFO L124 PetriNetUnfolderBase]: 2/124 cut-off events. [2023-11-06 21:59:47,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 2/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-06 21:59:47,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 2952 [2023-11-06 21:59:52,588 INFO L134 LiptonReduction]: Checked pairs total: 7068 [2023-11-06 21:59:52,588 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-11-06 21:59:52,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:59:52,629 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;@379b91fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:59:52,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 21:59:52,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:59:52,645 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-06 21:59:52,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:52,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:52,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:52,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 21:59:52,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1122211703, now seen corresponding path program 1 times [2023-11-06 21:59:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:52,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296269664] [2023-11-06 21:59:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,231 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 21:59:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:53,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296269664] [2023-11-06 21:59:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296269664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:53,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:53,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517876649] [2023-11-06 21:59:53,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:53,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:53,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 234 [2023-11-06 21:59:53,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:53,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:53,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 234 [2023-11-06 21:59:53,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:54,082 INFO L124 PetriNetUnfolderBase]: 2891/4262 cut-off events. [2023-11-06 21:59:54,083 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 21:59:54,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8362 conditions, 4262 events. 2891/4262 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23819 event pairs, 668 based on Foata normal form. 144/4105 useless extension candidates. Maximal degree in co-relation 8350. Up to 2980 conditions per place. [2023-11-06 21:59:54,127 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 31 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-11-06 21:59:54,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 168 flow [2023-11-06 21:59:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-11-06 21:59:54,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441595441595442 [2023-11-06 21:59:54,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-11-06 21:59:54,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-11-06 21:59:54,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:54,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-11-06 21:59:54,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:54,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:54,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:54,220 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 382 transitions. [2023-11-06 21:59:54,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 168 flow [2023-11-06 21:59:54,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:59:54,230 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 64 flow [2023-11-06 21:59:54,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2023-11-06 21:59:54,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-06 21:59:54,238 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 64 flow [2023-11-06 21:59:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:54,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:54,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:54,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 21:59:54,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 219290629, now seen corresponding path program 1 times [2023-11-06 21:59:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868667487] [2023-11-06 21:59:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:54,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:55,468 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 21:59:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:55,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868667487] [2023-11-06 21:59:55,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868667487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:55,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:55,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607327709] [2023-11-06 21:59:55,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:55,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:55,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 234 [2023-11-06 21:59:55,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:55,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:55,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 234 [2023-11-06 21:59:55,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:57,642 INFO L124 PetriNetUnfolderBase]: 8593/12282 cut-off events. [2023-11-06 21:59:57,643 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-11-06 21:59:57,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 12282 events. 8593/12282 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 69916 event pairs, 609 based on Foata normal form. 532/12814 useless extension candidates. Maximal degree in co-relation 25048. Up to 6487 conditions per place. [2023-11-06 21:59:57,731 INFO L140 encePairwiseOnDemand]: 222/234 looper letters, 47 selfloop transitions, 12 changer transitions 38/98 dead transitions. [2023-11-06 21:59:57,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 98 transitions, 418 flow [2023-11-06 21:59:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 793 transitions. [2023-11-06 21:59:57,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2023-11-06 21:59:57,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 793 transitions. [2023-11-06 21:59:57,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 793 transitions. [2023-11-06 21:59:57,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:57,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 793 transitions. [2023-11-06 21:59:57,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:57,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:57,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:57,746 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 64 flow. Second operand 7 states and 793 transitions. [2023-11-06 21:59:57,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 98 transitions, 418 flow [2023-11-06 21:59:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 98 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:57,753 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 170 flow [2023-11-06 21:59:57,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-11-06 21:59:57,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-06 21:59:57,755 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 170 flow [2023-11-06 21:59:57,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:57,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:59:57,756 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 21:59:57,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1791946766, now seen corresponding path program 1 times [2023-11-06 21:59:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935987906] [2023-11-06 21:59:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,590 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 21:59:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935987906] [2023-11-06 21:59:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935987906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:58,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411750408] [2023-11-06 21:59:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:58,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:58,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 234 [2023-11-06 21:59:58,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:58,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:58,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 234 [2023-11-06 21:59:58,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:00,655 INFO L124 PetriNetUnfolderBase]: 7916/11275 cut-off events. [2023-11-06 22:00:00,656 INFO L125 PetriNetUnfolderBase]: For 12432/12444 co-relation queries the response was YES. [2023-11-06 22:00:00,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34924 conditions, 11275 events. 7916/11275 cut-off events. For 12432/12444 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 63157 event pairs, 807 based on Foata normal form. 410/11683 useless extension candidates. Maximal degree in co-relation 34908. Up to 6245 conditions per place. [2023-11-06 22:00:00,742 INFO L140 encePairwiseOnDemand]: 222/234 looper letters, 53 selfloop transitions, 21 changer transitions 34/109 dead transitions. [2023-11-06 22:00:00,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 109 transitions, 692 flow [2023-11-06 22:00:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 793 transitions. [2023-11-06 22:00:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2023-11-06 22:00:00,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 793 transitions. [2023-11-06 22:00:00,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 793 transitions. [2023-11-06 22:00:00,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:00,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 793 transitions. [2023-11-06 22:00:00,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:00,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:00,756 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:00,756 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 170 flow. Second operand 7 states and 793 transitions. [2023-11-06 22:00:00,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 109 transitions, 692 flow [2023-11-06 22:00:00,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 109 transitions, 688 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:00:00,784 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 340 flow [2023-11-06 22:00:00,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-06 22:00:00,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-11-06 22:00:00,785 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 340 flow [2023-11-06 22:00:00,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:00,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:00,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:00,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:00:00,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:00,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 279410922, now seen corresponding path program 1 times [2023-11-06 22:00:00,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385355100] [2023-11-06 22:00:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:01,530 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 22:00:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:01,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385355100] [2023-11-06 22:00:01,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385355100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:01,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:01,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:00:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803992856] [2023-11-06 22:00:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:01,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:00:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:00:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:00:01,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 234 [2023-11-06 22:00:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:01,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:01,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 234 [2023-11-06 22:00:01,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:03,804 INFO L124 PetriNetUnfolderBase]: 9653/13736 cut-off events. [2023-11-06 22:00:03,804 INFO L125 PetriNetUnfolderBase]: For 36712/36712 co-relation queries the response was YES. [2023-11-06 22:00:03,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51927 conditions, 13736 events. 9653/13736 cut-off events. For 36712/36712 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 78269 event pairs, 1953 based on Foata normal form. 420/14156 useless extension candidates. Maximal degree in co-relation 51904. Up to 5521 conditions per place. [2023-11-06 22:00:03,900 INFO L140 encePairwiseOnDemand]: 222/234 looper letters, 58 selfloop transitions, 27 changer transitions 35/121 dead transitions. [2023-11-06 22:00:03,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 121 transitions, 1000 flow [2023-11-06 22:00:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 789 transitions. [2023-11-06 22:00:03,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816849816849817 [2023-11-06 22:00:03,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 789 transitions. [2023-11-06 22:00:03,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 789 transitions. [2023-11-06 22:00:03,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:03,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 789 transitions. [2023-11-06 22:00:03,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,914 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,914 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 340 flow. Second operand 7 states and 789 transitions. [2023-11-06 22:00:03,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 121 transitions, 1000 flow [2023-11-06 22:00:03,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 121 transitions, 976 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:03,957 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 578 flow [2023-11-06 22:00:03,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-06 22:00:03,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-11-06 22:00:03,958 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 578 flow [2023-11-06 22:00:03,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:03,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:03,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:00:03,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:03,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash 281406919, now seen corresponding path program 1 times [2023-11-06 22:00:03,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:03,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826511083] [2023-11-06 22:00:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:03,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:04,690 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 22:00:04,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826511083] [2023-11-06 22:00:04,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826511083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:04,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:04,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:04,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027634270] [2023-11-06 22:00:04,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:04,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:00:04,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:04,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:00:04,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:00:04,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 234 [2023-11-06 22:00:04,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:04,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:04,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 234 [2023-11-06 22:00:04,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:06,414 INFO L124 PetriNetUnfolderBase]: 9605/14226 cut-off events. [2023-11-06 22:00:06,415 INFO L125 PetriNetUnfolderBase]: For 66062/67397 co-relation queries the response was YES. [2023-11-06 22:00:06,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59308 conditions, 14226 events. 9605/14226 cut-off events. For 66062/67397 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 88192 event pairs, 2467 based on Foata normal form. 1100/15275 useless extension candidates. Maximal degree in co-relation 59280. Up to 9690 conditions per place. [2023-11-06 22:00:06,536 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 74 selfloop transitions, 12 changer transitions 34/135 dead transitions. [2023-11-06 22:00:06,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 135 transitions, 1452 flow [2023-11-06 22:00:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 840 transitions. [2023-11-06 22:00:06,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-11-06 22:00:06,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 840 transitions. [2023-11-06 22:00:06,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 840 transitions. [2023-11-06 22:00:06,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:06,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 840 transitions. [2023-11-06 22:00:06,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:06,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:06,554 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:06,554 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 578 flow. Second operand 7 states and 840 transitions. [2023-11-06 22:00:06,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 135 transitions, 1452 flow [2023-11-06 22:00:06,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 135 transitions, 1392 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:00:06,647 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 699 flow [2023-11-06 22:00:06,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-06 22:00:06,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-06 22:00:06,650 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 699 flow [2023-11-06 22:00:06,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:06,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:06,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:06,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:00:06,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:06,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1418192935, now seen corresponding path program 1 times [2023-11-06 22:00:06,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:06,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547122695] [2023-11-06 22:00:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:07,247 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 22:00:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547122695] [2023-11-06 22:00:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547122695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:07,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:07,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:00:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892908597] [2023-11-06 22:00:07,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:07,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:00:07,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:07,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:00:07,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:00:07,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 234 [2023-11-06 22:00:07,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 699 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:07,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:07,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 234 [2023-11-06 22:00:07,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:09,818 INFO L124 PetriNetUnfolderBase]: 8876/13241 cut-off events. [2023-11-06 22:00:09,819 INFO L125 PetriNetUnfolderBase]: For 73005/73855 co-relation queries the response was YES. [2023-11-06 22:00:09,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60252 conditions, 13241 events. 8876/13241 cut-off events. For 73005/73855 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 82229 event pairs, 1467 based on Foata normal form. 776/13949 useless extension candidates. Maximal degree in co-relation 60219. Up to 8467 conditions per place. [2023-11-06 22:00:09,953 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 73 selfloop transitions, 16 changer transitions 31/135 dead transitions. [2023-11-06 22:00:09,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 135 transitions, 1537 flow [2023-11-06 22:00:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-06 22:00:09,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073260073260073 [2023-11-06 22:00:09,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-06 22:00:09,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-06 22:00:09,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:09,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-06 22:00:09,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:09,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:09,966 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:09,967 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 699 flow. Second operand 7 states and 831 transitions. [2023-11-06 22:00:09,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 135 transitions, 1537 flow [2023-11-06 22:00:10,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 135 transitions, 1531 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:00:10,074 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 834 flow [2023-11-06 22:00:10,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=834, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-11-06 22:00:10,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-11-06 22:00:10,077 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 834 flow [2023-11-06 22:00:10,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:10,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:10,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:10,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:00:10,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:10,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash -970212174, now seen corresponding path program 1 times [2023-11-06 22:00:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748988013] [2023-11-06 22:00:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:11,209 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 22:00:11,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:11,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748988013] [2023-11-06 22:00:11,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748988013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:11,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:11,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:00:11,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974732209] [2023-11-06 22:00:11,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:11,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:11,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:11,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:11,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:11,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 234 [2023-11-06 22:00:11,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 834 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:11,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:11,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 234 [2023-11-06 22:00:11,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:13,110 INFO L124 PetriNetUnfolderBase]: 10023/14996 cut-off events. [2023-11-06 22:00:13,110 INFO L125 PetriNetUnfolderBase]: For 101486/102618 co-relation queries the response was YES. [2023-11-06 22:00:13,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67989 conditions, 14996 events. 10023/14996 cut-off events. For 101486/102618 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 96047 event pairs, 2843 based on Foata normal form. 1066/15975 useless extension candidates. Maximal degree in co-relation 67951. Up to 6056 conditions per place. [2023-11-06 22:00:13,265 INFO L140 encePairwiseOnDemand]: 229/234 looper letters, 69 selfloop transitions, 7 changer transitions 25/116 dead transitions. [2023-11-06 22:00:13,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 1422 flow [2023-11-06 22:00:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:00:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:00:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 704 transitions. [2023-11-06 22:00:13,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2023-11-06 22:00:13,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 704 transitions. [2023-11-06 22:00:13,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 704 transitions. [2023-11-06 22:00:13,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:13,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 704 transitions. [2023-11-06 22:00:13,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:13,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:13,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:13,281 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 834 flow. Second operand 6 states and 704 transitions. [2023-11-06 22:00:13,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 1422 flow [2023-11-06 22:00:13,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 116 transitions, 1355 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:13,577 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 814 flow [2023-11-06 22:00:13,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=814, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-11-06 22:00:13,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2023-11-06 22:00:13,578 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 814 flow [2023-11-06 22:00:13,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:13,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:13,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:13,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:00:13,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:13,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:13,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1441876308, now seen corresponding path program 1 times [2023-11-06 22:00:13,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:13,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435808735] [2023-11-06 22:00:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:13,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:13,779 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 22:00:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435808735] [2023-11-06 22:00:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435808735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:13,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613186124] [2023-11-06 22:00:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:13,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:13,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 234 [2023-11-06 22:00:13,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:13,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:13,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 234 [2023-11-06 22:00:13,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:14,941 INFO L124 PetriNetUnfolderBase]: 5821/8862 cut-off events. [2023-11-06 22:00:14,941 INFO L125 PetriNetUnfolderBase]: For 54987/56692 co-relation queries the response was YES. [2023-11-06 22:00:14,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40272 conditions, 8862 events. 5821/8862 cut-off events. For 54987/56692 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 55539 event pairs, 1383 based on Foata normal form. 695/9379 useless extension candidates. Maximal degree in co-relation 40232. Up to 7688 conditions per place. [2023-11-06 22:00:15,015 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 91 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2023-11-06 22:00:15,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 1454 flow [2023-11-06 22:00:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:00:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-06 22:00:15,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2023-11-06 22:00:15,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-06 22:00:15,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-06 22:00:15,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:15,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-06 22:00:15,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:15,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:15,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:15,022 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 814 flow. Second operand 3 states and 369 transitions. [2023-11-06 22:00:15,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 1454 flow [2023-11-06 22:00:15,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 1423 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-06 22:00:15,108 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 815 flow [2023-11-06 22:00:15,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=815, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2023-11-06 22:00:15,109 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-06 22:00:15,109 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 815 flow [2023-11-06 22:00:15,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:15,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:15,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:00:15,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:15,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash -864088356, now seen corresponding path program 1 times [2023-11-06 22:00:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:15,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331861842] [2023-11-06 22:00:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:15,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:15,294 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 22:00:15,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331861842] [2023-11-06 22:00:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331861842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:15,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523937853] [2023-11-06 22:00:15,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:15,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:00:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:15,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:00:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:00:15,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 234 [2023-11-06 22:00:15,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 815 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:15,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:15,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 234 [2023-11-06 22:00:15,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:16,108 INFO L124 PetriNetUnfolderBase]: 3132/5086 cut-off events. [2023-11-06 22:00:16,108 INFO L125 PetriNetUnfolderBase]: For 26375/27141 co-relation queries the response was YES. [2023-11-06 22:00:16,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24568 conditions, 5086 events. 3132/5086 cut-off events. For 26375/27141 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31554 event pairs, 386 based on Foata normal form. 648/5646 useless extension candidates. Maximal degree in co-relation 24531. Up to 3043 conditions per place. [2023-11-06 22:00:16,144 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 123 selfloop transitions, 9 changer transitions 2/152 dead transitions. [2023-11-06 22:00:16,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 1941 flow [2023-11-06 22:00:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:00:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:00:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2023-11-06 22:00:16,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267094017094017 [2023-11-06 22:00:16,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2023-11-06 22:00:16,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2023-11-06 22:00:16,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:16,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2023-11-06 22:00:16,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:16,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:16,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:16,154 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 815 flow. Second operand 4 states and 493 transitions. [2023-11-06 22:00:16,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 1941 flow [2023-11-06 22:00:16,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 152 transitions, 1934 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:00:16,191 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 860 flow [2023-11-06 22:00:16,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=860, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-11-06 22:00:16,192 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-11-06 22:00:16,193 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 860 flow [2023-11-06 22:00:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:16,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:16,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:00:16,194 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:16,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1632581322, now seen corresponding path program 1 times [2023-11-06 22:00:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:16,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229078265] [2023-11-06 22:00:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:16,943 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 22:00:16,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:16,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229078265] [2023-11-06 22:00:16,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229078265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:16,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:16,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:00:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164450357] [2023-11-06 22:00:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:16,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:00:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:00:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:00:17,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 234 [2023-11-06 22:00:17,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:17,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:17,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 234 [2023-11-06 22:00:17,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:18,447 INFO L124 PetriNetUnfolderBase]: 5585/8973 cut-off events. [2023-11-06 22:00:18,447 INFO L125 PetriNetUnfolderBase]: For 48922/49044 co-relation queries the response was YES. [2023-11-06 22:00:18,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47811 conditions, 8973 events. 5585/8973 cut-off events. For 48922/49044 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57414 event pairs, 554 based on Foata normal form. 212/9170 useless extension candidates. Maximal degree in co-relation 47772. Up to 3932 conditions per place. [2023-11-06 22:00:18,494 INFO L140 encePairwiseOnDemand]: 221/234 looper letters, 95 selfloop transitions, 39 changer transitions 80/217 dead transitions. [2023-11-06 22:00:18,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 217 transitions, 2543 flow [2023-11-06 22:00:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 782 transitions. [2023-11-06 22:00:18,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47741147741147744 [2023-11-06 22:00:18,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 782 transitions. [2023-11-06 22:00:18,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 782 transitions. [2023-11-06 22:00:18,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:18,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 782 transitions. [2023-11-06 22:00:18,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,507 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,507 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 860 flow. Second operand 7 states and 782 transitions. [2023-11-06 22:00:18,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 217 transitions, 2543 flow [2023-11-06 22:00:18,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 217 transitions, 2465 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:18,615 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 937 flow [2023-11-06 22:00:18,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2023-11-06 22:00:18,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-11-06 22:00:18,617 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 937 flow [2023-11-06 22:00:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:18,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:18,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:00:18,621 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:18,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash 237009831, now seen corresponding path program 1 times [2023-11-06 22:00:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917803777] [2023-11-06 22:00:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:18,848 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 22:00:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917803777] [2023-11-06 22:00:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917803777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:18,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:00:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775689689] [2023-11-06 22:00:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:00:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:00:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:00:18,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 234 [2023-11-06 22:00:18,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 937 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:18,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 234 [2023-11-06 22:00:18,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:19,593 INFO L124 PetriNetUnfolderBase]: 2231/3929 cut-off events. [2023-11-06 22:00:19,593 INFO L125 PetriNetUnfolderBase]: For 23404/23904 co-relation queries the response was YES. [2023-11-06 22:00:19,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19288 conditions, 3929 events. 2231/3929 cut-off events. For 23404/23904 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26380 event pairs, 115 based on Foata normal form. 618/4446 useless extension candidates. Maximal degree in co-relation 19247. Up to 1364 conditions per place. [2023-11-06 22:00:19,623 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 108 selfloop transitions, 13 changer transitions 16/157 dead transitions. [2023-11-06 22:00:19,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 157 transitions, 2094 flow [2023-11-06 22:00:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:00:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:00:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 613 transitions. [2023-11-06 22:00:19,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523931623931624 [2023-11-06 22:00:19,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 613 transitions. [2023-11-06 22:00:19,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 613 transitions. [2023-11-06 22:00:19,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:19,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 613 transitions. [2023-11-06 22:00:19,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:19,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:19,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:19,634 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 937 flow. Second operand 5 states and 613 transitions. [2023-11-06 22:00:19,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 157 transitions, 2094 flow [2023-11-06 22:00:19,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 157 transitions, 2028 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-06 22:00:19,679 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 913 flow [2023-11-06 22:00:19,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=913, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2023-11-06 22:00:19,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-11-06 22:00:19,680 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 913 flow [2023-11-06 22:00:19,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:19,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:19,681 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] [2023-11-06 22:00:19,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:00:19,681 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:19,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1165297416, now seen corresponding path program 1 times [2023-11-06 22:00:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535953608] [2023-11-06 22:00:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:19,880 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 22:00:19,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535953608] [2023-11-06 22:00:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535953608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:19,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:19,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117222699] [2023-11-06 22:00:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:19,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:00:19,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:00:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:00:19,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 234 [2023-11-06 22:00:19,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 913 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:19,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:19,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 234 [2023-11-06 22:00:19,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:20,707 INFO L124 PetriNetUnfolderBase]: 3082/5607 cut-off events. [2023-11-06 22:00:20,707 INFO L125 PetriNetUnfolderBase]: For 31411/31648 co-relation queries the response was YES. [2023-11-06 22:00:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30032 conditions, 5607 events. 3082/5607 cut-off events. For 31411/31648 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 39855 event pairs, 727 based on Foata normal form. 64/5583 useless extension candidates. Maximal degree in co-relation 29992. Up to 2663 conditions per place. [2023-11-06 22:00:20,734 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 68 selfloop transitions, 6 changer transitions 44/126 dead transitions. [2023-11-06 22:00:20,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 1534 flow [2023-11-06 22:00:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:00:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:00:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 589 transitions. [2023-11-06 22:00:20,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034188034188034 [2023-11-06 22:00:20,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 589 transitions. [2023-11-06 22:00:20,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 589 transitions. [2023-11-06 22:00:20,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:20,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 589 transitions. [2023-11-06 22:00:20,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:20,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:20,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:20,746 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 913 flow. Second operand 5 states and 589 transitions. [2023-11-06 22:00:20,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 1534 flow [2023-11-06 22:00:20,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 126 transitions, 1458 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-06 22:00:20,884 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 693 flow [2023-11-06 22:00:20,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=693, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2023-11-06 22:00:20,885 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-11-06 22:00:20,885 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 693 flow [2023-11-06 22:00:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:20,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:20,886 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] [2023-11-06 22:00:20,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:00:20,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:20,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash 803409988, now seen corresponding path program 1 times [2023-11-06 22:00:20,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:20,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730468103] [2023-11-06 22:00:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:21,186 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 22:00:21,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:21,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730468103] [2023-11-06 22:00:21,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730468103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:21,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:21,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:00:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668095074] [2023-11-06 22:00:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:21,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:00:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:00:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:00:21,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 234 [2023-11-06 22:00:21,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 693 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:21,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:21,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 234 [2023-11-06 22:00:21,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:21,729 INFO L124 PetriNetUnfolderBase]: 1229/2224 cut-off events. [2023-11-06 22:00:21,729 INFO L125 PetriNetUnfolderBase]: For 14273/14452 co-relation queries the response was YES. [2023-11-06 22:00:21,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11141 conditions, 2224 events. 1229/2224 cut-off events. For 14273/14452 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14113 event pairs, 99 based on Foata normal form. 186/2374 useless extension candidates. Maximal degree in co-relation 11110. Up to 727 conditions per place. [2023-11-06 22:00:21,739 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 26 selfloop transitions, 17 changer transitions 78/125 dead transitions. [2023-11-06 22:00:21,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 125 transitions, 1588 flow [2023-11-06 22:00:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:00:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:00:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 720 transitions. [2023-11-06 22:00:21,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-11-06 22:00:21,744 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 720 transitions. [2023-11-06 22:00:21,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 720 transitions. [2023-11-06 22:00:21,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:21,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 720 transitions. [2023-11-06 22:00:21,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:21,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:21,752 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:21,753 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 693 flow. Second operand 6 states and 720 transitions. [2023-11-06 22:00:21,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 125 transitions, 1588 flow [2023-11-06 22:00:21,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 125 transitions, 1490 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-11-06 22:00:21,809 INFO L231 Difference]: Finished difference. Result has 78 places, 38 transitions, 319 flow [2023-11-06 22:00:21,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=78, PETRI_TRANSITIONS=38} [2023-11-06 22:00:21,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-11-06 22:00:21,811 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 38 transitions, 319 flow [2023-11-06 22:00:21,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:21,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:21,812 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] [2023-11-06 22:00:21,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:00:21,812 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:00:21,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash -431614101, now seen corresponding path program 1 times [2023-11-06 22:00:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:21,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936001470] [2023-11-06 22:00:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:00:21,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:00:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:00:21,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:00:21,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:00:21,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-06 22:00:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-06 22:00:21,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-06 22:00:21,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-06 22:00:21,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-06 22:00:21,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-11-06 22:00:21,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-06 22:00:21,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:00:21,959 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:21,967 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:00:21,968 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:00:22,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:00:22 BasicIcfg [2023-11-06 22:00:22,062 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:00:22,063 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:00:22,063 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:00:22,063 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:00:22,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:47" (3/4) ... [2023-11-06 22:00:22,064 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 22:00:22,224 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:00:22,224 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:00:22,225 INFO L158 Benchmark]: Toolchain (without parser) took 36822.92ms. Allocated memory was 174.1MB in the beginning and 3.4GB in the end (delta: 3.3GB). Free memory was 139.2MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 486.3MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,225 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:00:22,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 711.22ms. Allocated memory is still 174.1MB. Free memory was 139.2MB in the beginning and 115.4MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.85ms. Allocated memory is still 174.1MB. Free memory was 115.4MB in the beginning and 112.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,227 INFO L158 Benchmark]: Boogie Preprocessor took 46.79ms. Allocated memory is still 174.1MB. Free memory was 112.7MB in the beginning and 111.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,227 INFO L158 Benchmark]: RCFGBuilder took 874.25ms. Allocated memory is still 174.1MB. Free memory was 111.0MB in the beginning and 76.3MB in the end (delta: 34.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,228 INFO L158 Benchmark]: TraceAbstraction took 34932.32ms. Allocated memory was 174.1MB in the beginning and 3.4GB in the end (delta: 3.3GB). Free memory was 75.6MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 410.8MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,228 INFO L158 Benchmark]: Witness Printer took 161.47ms. Allocated memory is still 3.4GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:00:22,232 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 711.22ms. Allocated memory is still 174.1MB. Free memory was 139.2MB in the beginning and 115.4MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.85ms. Allocated memory is still 174.1MB. Free memory was 115.4MB in the beginning and 112.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.79ms. Allocated memory is still 174.1MB. Free memory was 112.7MB in the beginning and 111.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 874.25ms. Allocated memory is still 174.1MB. Free memory was 111.0MB in the beginning and 76.3MB in the end (delta: 34.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 34932.32ms. Allocated memory was 174.1MB in the beginning and 3.4GB in the end (delta: 3.3GB). Free memory was 75.6MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 410.8MB. Max. memory is 16.1GB. * Witness Printer took 161.47ms. Allocated memory is still 3.4GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 135 PlacesBefore, 42 PlacesAfterwards, 124 TransitionsBefore, 30 TransitionsAfterwards, 2952 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 7068 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3147, independent: 2968, independent conditional: 0, independent unconditional: 2968, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1523, independent: 1486, independent conditional: 0, independent unconditional: 1486, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3147, independent: 1482, independent conditional: 0, independent unconditional: 1482, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1523, unknown conditional: 0, unknown unconditional: 1523] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int a = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L720] 0 int y = 0; [L722] 0 int z = 0; [L723] 0 _Bool z$flush_delayed; [L724] 0 int z$mem_tmp; [L725] 0 _Bool z$r_buff0_thd0; [L726] 0 _Bool z$r_buff0_thd1; [L727] 0 _Bool z$r_buff0_thd2; [L728] 0 _Bool z$r_buff0_thd3; [L729] 0 _Bool z$r_buff0_thd4; [L730] 0 _Bool z$r_buff1_thd0; [L731] 0 _Bool z$r_buff1_thd1; [L732] 0 _Bool z$r_buff1_thd2; [L733] 0 _Bool z$r_buff1_thd3; [L734] 0 _Bool z$r_buff1_thd4; [L735] 0 _Bool z$read_delayed; [L736] 0 int *z$read_delayed_var; [L737] 0 int z$w_buff0; [L738] 0 _Bool z$w_buff0_used; [L739] 0 int z$w_buff1; [L740] 0 _Bool z$w_buff1_used; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1517; [L835] FCALL, FORK 0 pthread_create(&t1517, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1517, ((void *)0), P0, ((void *)0))=-2, t1517={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L836] 0 pthread_t t1518; [L837] FCALL, FORK 0 pthread_create(&t1518, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1518, ((void *)0), P1, ((void *)0))=-1, t1517={5:0}, t1518={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L838] 0 pthread_t t1519; [L839] FCALL, FORK 0 pthread_create(&t1519, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1519, ((void *)0), P2, ((void *)0))=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L840] 0 pthread_t t1520; [L841] FCALL, FORK 0 pthread_create(&t1520, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1520, ((void *)0), P3, ((void *)0))=1, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L796] 4 z$w_buff1 = z$w_buff0 [L797] 4 z$w_buff0 = 2 [L798] 4 z$w_buff1_used = z$w_buff0_used [L799] 4 z$w_buff0_used = (_Bool)1 [L800] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L800] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L801] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L802] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L803] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L804] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L805] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L806] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L809] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L746] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L749] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L761] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L764] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L776] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L779] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L782] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L783] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L784] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L785] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L786] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L812] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L815] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L789] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L791] 3 return 0; [L819] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L821] 4 return 0; [L843] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L845] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L845] RET 0 assume_abort_if_not(main$tmp_guard0) [L847] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L848] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L849] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L850] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L851] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L854] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L855] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L856] 0 z$flush_delayed = weak$$choice2 [L857] 0 z$mem_tmp = z [L858] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 0) [L866] 0 z = z$flush_delayed ? z$mem_tmp : z [L867] 0 z$flush_delayed = (_Bool)0 [L869] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 162 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 792 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 598 mSDsluCounter, 542 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 362 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1731 IncrementalHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 180 mSDtfsCounter, 1731 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=937occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 1442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:00:22,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6835017-2c00-4b8e-b57f-1bd07b5f15bf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE