./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:58,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:58,254 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:11:58,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:58,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:58,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:58,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:58,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:58,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:58,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:58,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:58,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:58,319 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:58,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:58,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:58,322 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:58,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:58,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:58,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:58,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:58,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:58,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:58,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:58,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:58,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:58,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:58,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:58,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:58,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:58,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:58,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:58,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:58,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:58,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:58,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:58,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:58,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:58,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:58,331 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:58,331 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_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 [2023-11-12 02:11:58,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:58,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:58,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:58,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:58,687 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:58,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:12:01,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:02,322 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:02,332 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:12:02,358 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/data/321bdac4d/13adbb07c3af4535bf6b650a212add4e/FLAG5c2f04d27 [2023-11-12 02:12:02,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/data/321bdac4d/13adbb07c3af4535bf6b650a212add4e [2023-11-12 02:12:02,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:02,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:02,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:02,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:02,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:02,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:02" (1/1) ... [2023-11-12 02:12:02,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4891f655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:02, skipping insertion in model container [2023-11-12 02:12:02,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:02" (1/1) ... [2023-11-12 02:12:02,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:02,629 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_10710c00-00d8-435a-84d0-a5d3c650f9e6/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-12 02:12:02,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:02,984 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:02,998 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_10710c00-00d8-435a-84d0-a5d3c650f9e6/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-12 02:12:03,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:03,127 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:03,127 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:03,135 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:03,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03 WrapperNode [2023-11-12 02:12:03,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:03,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:03,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:03,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:03,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,242 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-12 02:12:03,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:03,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:03,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:03,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:03,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:03,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:03,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:03,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:03,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:03,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:03,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:03,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10710c00-00d8-435a-84d0-a5d3c650f9e6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:12:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:12:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:12:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:12:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:12:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:12:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:12:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:12:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:12:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:12:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:12:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:03,447 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:12:03,699 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:03,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:04,235 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:04,462 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:04,463 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:12:04,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:04 BoogieIcfgContainer [2023-11-12 02:12:04,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:04,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:04,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:04,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:04,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:02" (1/3) ... [2023-11-12 02:12:04,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7f3279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:04, skipping insertion in model container [2023-11-12 02:12:04,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03" (2/3) ... [2023-11-12 02:12:04,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7f3279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:04, skipping insertion in model container [2023-11-12 02:12:04,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:04" (3/3) ... [2023-11-12 02:12:04,475 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:12:04,485 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:12:04,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:04,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:12:04,496 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:04,555 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:04,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 110 transitions, 232 flow [2023-11-12 02:12:04,675 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-11-12 02:12:04,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:04,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-12 02:12:04,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 110 transitions, 232 flow [2023-11-12 02:12:04,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 107 transitions, 223 flow [2023-11-12 02:12:04,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:04,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 107 transitions, 223 flow [2023-11-12 02:12:04,709 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 107 transitions, 223 flow [2023-11-12 02:12:04,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 107 transitions, 223 flow [2023-11-12 02:12:04,743 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-11-12 02:12:04,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:04,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-12 02:12:04,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 2052 [2023-11-12 02:12:09,172 INFO L134 LiptonReduction]: Checked pairs total: 5199 [2023-11-12 02:12:09,172 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-11-12 02:12:09,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:09,207 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=LoopHeads, 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;@6dc76807, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:09,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:12:09,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:09,214 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-12 02:12:09,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:09,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:09,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:09,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:09,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash 41533709, now seen corresponding path program 1 times [2023-11-12 02:12:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541921113] [2023-11-12 02:12:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:09,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:09,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541921113] [2023-11-12 02:12:09,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541921113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:09,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52762220] [2023-11-12 02:12:09,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:09,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 203 [2023-11-12 02:12:09,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:09,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:09,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 203 [2023-11-12 02:12:09,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:10,703 INFO L124 PetriNetUnfolderBase]: 1555/2452 cut-off events. [2023-11-12 02:12:10,703 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-12 02:12:10,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 2452 events. 1555/2452 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12269 event pairs, 325 based on Foata normal form. 96/2356 useless extension candidates. Maximal degree in co-relation 4788. Up to 1735 conditions per place. [2023-11-12 02:12:10,732 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 31 selfloop transitions, 2 changer transitions 4/38 dead transitions. [2023-11-12 02:12:10,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 159 flow [2023-11-12 02:12:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-11-12 02:12:10,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2023-11-12 02:12:10,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-11-12 02:12:10,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-11-12 02:12:10,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:10,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-11-12 02:12:10,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:10,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:10,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:10,780 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 322 transitions. [2023-11-12 02:12:10,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 159 flow [2023-11-12 02:12:10,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:10,786 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 54 flow [2023-11-12 02:12:10,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-11-12 02:12:10,792 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-11-12 02:12:10,793 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 54 flow [2023-11-12 02:12:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:10,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:10,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:10,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:10,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 381668258, now seen corresponding path program 1 times [2023-11-12 02:12:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:10,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861747317] [2023-11-12 02:12:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:11,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861747317] [2023-11-12 02:12:11,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861747317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:11,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:11,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:11,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749561798] [2023-11-12 02:12:11,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:11,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:11,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:11,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-11-12 02:12:11,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:11,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:11,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-11-12 02:12:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:12,534 INFO L124 PetriNetUnfolderBase]: 1783/2662 cut-off events. [2023-11-12 02:12:12,534 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-12 02:12:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5518 conditions, 2662 events. 1783/2662 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12257 event pairs, 365 based on Foata normal form. 142/2804 useless extension candidates. Maximal degree in co-relation 5508. Up to 1971 conditions per place. [2023-11-12 02:12:12,555 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 37 selfloop transitions, 11 changer transitions 31/79 dead transitions. [2023-11-12 02:12:12,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 79 transitions, 336 flow [2023-11-12 02:12:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:12:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2023-11-12 02:12:12,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47149894440534834 [2023-11-12 02:12:12,560 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2023-11-12 02:12:12,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2023-11-12 02:12:12,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:12,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2023-11-12 02:12:12,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:12,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:12,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:12,574 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 54 flow. Second operand 7 states and 670 transitions. [2023-11-12 02:12:12,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 79 transitions, 336 flow [2023-11-12 02:12:12,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 79 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:12,580 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 136 flow [2023-11-12 02:12:12,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-11-12 02:12:12,581 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-11-12 02:12:12,587 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 136 flow [2023-11-12 02:12:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:12,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:12,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:12,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:12,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1053185783, now seen corresponding path program 1 times [2023-11-12 02:12:12,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:12,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119776607] [2023-11-12 02:12:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:12,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:13,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:13,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119776607] [2023-11-12 02:12:13,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119776607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:13,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:13,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:13,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940190141] [2023-11-12 02:12:13,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:13,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:13,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:13,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:13,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:13,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-11-12 02:12:13,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:13,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:13,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-11-12 02:12:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:13,976 INFO L124 PetriNetUnfolderBase]: 1463/2200 cut-off events. [2023-11-12 02:12:13,976 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2023-11-12 02:12:13,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6908 conditions, 2200 events. 1463/2200 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9569 event pairs, 426 based on Foata normal form. 126/2326 useless extension candidates. Maximal degree in co-relation 6893. Up to 1054 conditions per place. [2023-11-12 02:12:13,998 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 42 selfloop transitions, 10 changer transitions 29/81 dead transitions. [2023-11-12 02:12:13,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 81 transitions, 503 flow [2023-11-12 02:12:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:12:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 658 transitions. [2023-11-12 02:12:14,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630541871921182 [2023-11-12 02:12:14,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 658 transitions. [2023-11-12 02:12:14,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 658 transitions. [2023-11-12 02:12:14,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:14,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 658 transitions. [2023-11-12 02:12:14,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:14,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:14,011 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:14,011 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 136 flow. Second operand 7 states and 658 transitions. [2023-11-12 02:12:14,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 81 transitions, 503 flow [2023-11-12 02:12:14,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 81 transitions, 495 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:14,027 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 229 flow [2023-11-12 02:12:14,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-11-12 02:12:14,028 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-11-12 02:12:14,028 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 229 flow [2023-11-12 02:12:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:14,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:14,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:14,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:14,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash 814865143, now seen corresponding path program 1 times [2023-11-12 02:12:14,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149725169] [2023-11-12 02:12:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:14,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:15,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:15,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149725169] [2023-11-12 02:12:15,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149725169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:15,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:15,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:15,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186754392] [2023-11-12 02:12:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:15,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:12:15,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:12:15,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:15,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 203 [2023-11-12 02:12:15,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 91.75) internal successors, (734), 8 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:15,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:15,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 203 [2023-11-12 02:12:15,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:16,041 INFO L124 PetriNetUnfolderBase]: 1384/2141 cut-off events. [2023-11-12 02:12:16,041 INFO L125 PetriNetUnfolderBase]: For 3362/3374 co-relation queries the response was YES. [2023-11-12 02:12:16,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 2141 events. 1384/2141 cut-off events. For 3362/3374 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9854 event pairs, 93 based on Foata normal form. 56/2197 useless extension candidates. Maximal degree in co-relation 7396. Up to 1393 conditions per place. [2023-11-12 02:12:16,064 INFO L140 encePairwiseOnDemand]: 195/203 looper letters, 59 selfloop transitions, 11 changer transitions 16/90 dead transitions. [2023-11-12 02:12:16,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 643 flow [2023-11-12 02:12:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:12:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 703 transitions. [2023-11-12 02:12:16,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49472202674173116 [2023-11-12 02:12:16,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 703 transitions. [2023-11-12 02:12:16,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 703 transitions. [2023-11-12 02:12:16,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:16,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 703 transitions. [2023-11-12 02:12:16,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:16,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:16,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:16,080 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 229 flow. Second operand 7 states and 703 transitions. [2023-11-12 02:12:16,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 643 flow [2023-11-12 02:12:16,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 626 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:16,099 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 317 flow [2023-11-12 02:12:16,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-12 02:12:16,101 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-11-12 02:12:16,101 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 317 flow [2023-11-12 02:12:16,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.75) internal successors, (734), 8 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:16,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:16,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:16,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:16,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:16,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash -828822297, now seen corresponding path program 2 times [2023-11-12 02:12:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:16,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320379064] [2023-11-12 02:12:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:16,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:17,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320379064] [2023-11-12 02:12:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320379064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:17,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:17,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602796799] [2023-11-12 02:12:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:17,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:17,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:17,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:17,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:17,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-11-12 02:12:17,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:17,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:17,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-11-12 02:12:17,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:17,878 INFO L124 PetriNetUnfolderBase]: 1372/2120 cut-off events. [2023-11-12 02:12:17,878 INFO L125 PetriNetUnfolderBase]: For 4880/4927 co-relation queries the response was YES. [2023-11-12 02:12:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 2120 events. 1372/2120 cut-off events. For 4880/4927 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9784 event pairs, 190 based on Foata normal form. 93/2213 useless extension candidates. Maximal degree in co-relation 8424. Up to 1395 conditions per place. [2023-11-12 02:12:17,904 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 55 selfloop transitions, 20 changer transitions 19/98 dead transitions. [2023-11-12 02:12:17,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 98 transitions, 811 flow [2023-11-12 02:12:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:12:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:12:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 784 transitions. [2023-11-12 02:12:17,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2023-11-12 02:12:17,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 784 transitions. [2023-11-12 02:12:17,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 784 transitions. [2023-11-12 02:12:17,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:17,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 784 transitions. [2023-11-12 02:12:17,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:17,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:17,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:17,916 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 317 flow. Second operand 8 states and 784 transitions. [2023-11-12 02:12:17,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 98 transitions, 811 flow [2023-11-12 02:12:17,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 98 transitions, 797 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:17,933 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 514 flow [2023-11-12 02:12:17,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2023-11-12 02:12:17,934 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-11-12 02:12:17,934 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 514 flow [2023-11-12 02:12:17,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:17,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:17,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:17,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:17,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:17,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -520343053, now seen corresponding path program 1 times [2023-11-12 02:12:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:17,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355148732] [2023-11-12 02:12:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355148732] [2023-11-12 02:12:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355148732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:18,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240102558] [2023-11-12 02:12:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:18,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-11-12 02:12:18,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:18,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:18,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-11-12 02:12:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:19,549 INFO L124 PetriNetUnfolderBase]: 1774/2756 cut-off events. [2023-11-12 02:12:19,549 INFO L125 PetriNetUnfolderBase]: For 9559/9582 co-relation queries the response was YES. [2023-11-12 02:12:19,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12683 conditions, 2756 events. 1774/2756 cut-off events. For 9559/9582 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13491 event pairs, 111 based on Foata normal form. 53/2809 useless extension candidates. Maximal degree in co-relation 12653. Up to 1281 conditions per place. [2023-11-12 02:12:19,584 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 92 selfloop transitions, 52 changer transitions 31/179 dead transitions. [2023-11-12 02:12:19,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 179 transitions, 1775 flow [2023-11-12 02:12:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:12:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:12:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1091 transitions. [2023-11-12 02:12:19,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885803851321093 [2023-11-12 02:12:19,589 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1091 transitions. [2023-11-12 02:12:19,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1091 transitions. [2023-11-12 02:12:19,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:19,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1091 transitions. [2023-11-12 02:12:19,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 99.18181818181819) internal successors, (1091), 11 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:19,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:19,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:19,601 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 514 flow. Second operand 11 states and 1091 transitions. [2023-11-12 02:12:19,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 179 transitions, 1775 flow [2023-11-12 02:12:19,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 179 transitions, 1659 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:19,653 INFO L231 Difference]: Finished difference. Result has 71 places, 98 transitions, 1056 flow [2023-11-12 02:12:19,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1056, PETRI_PLACES=71, PETRI_TRANSITIONS=98} [2023-11-12 02:12:19,654 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2023-11-12 02:12:19,654 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 98 transitions, 1056 flow [2023-11-12 02:12:19,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:19,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:19,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:19,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:19,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:19,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash -589498535, now seen corresponding path program 1 times [2023-11-12 02:12:19,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620463660] [2023-11-12 02:12:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:20,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620463660] [2023-11-12 02:12:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620463660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:20,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:20,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:20,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798181498] [2023-11-12 02:12:20,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:20,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:12:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:20,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:12:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:12:20,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-11-12 02:12:20,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 98 transitions, 1056 flow. Second operand has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:20,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:20,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-11-12 02:12:20,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:21,717 INFO L124 PetriNetUnfolderBase]: 1520/2368 cut-off events. [2023-11-12 02:12:21,717 INFO L125 PetriNetUnfolderBase]: For 14749/14770 co-relation queries the response was YES. [2023-11-12 02:12:21,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13113 conditions, 2368 events. 1520/2368 cut-off events. For 14749/14770 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11193 event pairs, 111 based on Foata normal form. 57/2425 useless extension candidates. Maximal degree in co-relation 13077. Up to 1656 conditions per place. [2023-11-12 02:12:21,765 INFO L140 encePairwiseOnDemand]: 198/203 looper letters, 91 selfloop transitions, 22 changer transitions 15/132 dead transitions. [2023-11-12 02:12:21,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 132 transitions, 1623 flow [2023-11-12 02:12:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:12:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-11-12 02:12:21,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819376026272578 [2023-11-12 02:12:21,769 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-11-12 02:12:21,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-11-12 02:12:21,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:21,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-11-12 02:12:21,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:21,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:21,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:21,778 INFO L175 Difference]: Start difference. First operand has 71 places, 98 transitions, 1056 flow. Second operand 6 states and 587 transitions. [2023-11-12 02:12:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 132 transitions, 1623 flow [2023-11-12 02:12:21,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 132 transitions, 1542 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:21,866 INFO L231 Difference]: Finished difference. Result has 74 places, 102 transitions, 1090 flow [2023-11-12 02:12:21,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1090, PETRI_PLACES=74, PETRI_TRANSITIONS=102} [2023-11-12 02:12:21,867 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2023-11-12 02:12:21,868 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 102 transitions, 1090 flow [2023-11-12 02:12:21,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:21,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:21,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:21,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:21,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:21,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash 75884070, now seen corresponding path program 1 times [2023-11-12 02:12:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:21,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463116580] [2023-11-12 02:12:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:21,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:23,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:23,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463116580] [2023-11-12 02:12:23,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463116580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:23,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:23,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:23,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426251266] [2023-11-12 02:12:23,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:23,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:12:23,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:23,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:12:23,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:23,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 203 [2023-11-12 02:12:23,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 102 transitions, 1090 flow. Second operand has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:23,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:23,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 203 [2023-11-12 02:12:23,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:24,363 INFO L124 PetriNetUnfolderBase]: 1873/2907 cut-off events. [2023-11-12 02:12:24,363 INFO L125 PetriNetUnfolderBase]: For 19204/19273 co-relation queries the response was YES. [2023-11-12 02:12:24,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16154 conditions, 2907 events. 1873/2907 cut-off events. For 19204/19273 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14625 event pairs, 131 based on Foata normal form. 120/3011 useless extension candidates. Maximal degree in co-relation 16116. Up to 1768 conditions per place. [2023-11-12 02:12:24,408 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 96 selfloop transitions, 60 changer transitions 21/181 dead transitions. [2023-11-12 02:12:24,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 181 transitions, 2209 flow [2023-11-12 02:12:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:12:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 685 transitions. [2023-11-12 02:12:24,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205489092188597 [2023-11-12 02:12:24,413 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 685 transitions. [2023-11-12 02:12:24,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 685 transitions. [2023-11-12 02:12:24,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:24,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 685 transitions. [2023-11-12 02:12:24,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:24,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:24,420 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:24,420 INFO L175 Difference]: Start difference. First operand has 74 places, 102 transitions, 1090 flow. Second operand 7 states and 685 transitions. [2023-11-12 02:12:24,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 181 transitions, 2209 flow [2023-11-12 02:12:24,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 2184 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:24,490 INFO L231 Difference]: Finished difference. Result has 79 places, 132 transitions, 1655 flow [2023-11-12 02:12:24,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1655, PETRI_PLACES=79, PETRI_TRANSITIONS=132} [2023-11-12 02:12:24,491 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 44 predicate places. [2023-11-12 02:12:24,491 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 132 transitions, 1655 flow [2023-11-12 02:12:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:24,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:24,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:24,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:24,493 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:24,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash 76316520, now seen corresponding path program 2 times [2023-11-12 02:12:24,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854097333] [2023-11-12 02:12:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854097333] [2023-11-12 02:12:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854097333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220303430] [2023-11-12 02:12:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:25,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 203 [2023-11-12 02:12:25,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 132 transitions, 1655 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:25,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:25,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 203 [2023-11-12 02:12:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:26,373 INFO L124 PetriNetUnfolderBase]: 1867/2901 cut-off events. [2023-11-12 02:12:26,373 INFO L125 PetriNetUnfolderBase]: For 26405/26474 co-relation queries the response was YES. [2023-11-12 02:12:26,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18135 conditions, 2901 events. 1867/2901 cut-off events. For 26405/26474 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14693 event pairs, 168 based on Foata normal form. 99/2990 useless extension candidates. Maximal degree in co-relation 18094. Up to 1948 conditions per place. [2023-11-12 02:12:26,419 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 102 selfloop transitions, 84 changer transitions 18/208 dead transitions. [2023-11-12 02:12:26,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 208 transitions, 2924 flow [2023-11-12 02:12:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:12:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:12:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 778 transitions. [2023-11-12 02:12:26,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.479064039408867 [2023-11-12 02:12:26,424 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 778 transitions. [2023-11-12 02:12:26,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 778 transitions. [2023-11-12 02:12:26,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:26,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 778 transitions. [2023-11-12 02:12:26,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:26,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:26,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:26,433 INFO L175 Difference]: Start difference. First operand has 79 places, 132 transitions, 1655 flow. Second operand 8 states and 778 transitions. [2023-11-12 02:12:26,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 208 transitions, 2924 flow [2023-11-12 02:12:26,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 208 transitions, 2806 flow, removed 33 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:26,597 INFO L231 Difference]: Finished difference. Result has 85 places, 162 transitions, 2263 flow [2023-11-12 02:12:26,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2263, PETRI_PLACES=85, PETRI_TRANSITIONS=162} [2023-11-12 02:12:26,602 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 50 predicate places. [2023-11-12 02:12:26,603 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 162 transitions, 2263 flow [2023-11-12 02:12:26,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:26,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:26,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:12:26,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:26,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:26,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1628208654, now seen corresponding path program 3 times [2023-11-12 02:12:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:26,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856533220] [2023-11-12 02:12:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:27,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:27,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856533220] [2023-11-12 02:12:27,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856533220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:27,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:27,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982269056] [2023-11-12 02:12:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:27,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:27,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:27,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:27,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 203 [2023-11-12 02:12:27,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 162 transitions, 2263 flow. Second operand has 6 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:27,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:27,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 203 [2023-11-12 02:12:27,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:28,471 INFO L124 PetriNetUnfolderBase]: 2107/3277 cut-off events. [2023-11-12 02:12:28,471 INFO L125 PetriNetUnfolderBase]: For 38861/38956 co-relation queries the response was YES. [2023-11-12 02:12:28,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22375 conditions, 3277 events. 2107/3277 cut-off events. For 38861/38956 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17040 event pairs, 198 based on Foata normal form. 132/3393 useless extension candidates. Maximal degree in co-relation 22331. Up to 1853 conditions per place. [2023-11-12 02:12:28,513 INFO L140 encePairwiseOnDemand]: 194/203 looper letters, 113 selfloop transitions, 120 changer transitions 19/256 dead transitions. [2023-11-12 02:12:28,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 256 transitions, 3991 flow [2023-11-12 02:12:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:12:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:12:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-11-12 02:12:28,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47728516694033934 [2023-11-12 02:12:28,518 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-11-12 02:12:28,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-11-12 02:12:28,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:28,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-11-12 02:12:28,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.88888888888889) internal successors, (872), 9 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:28,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:28,528 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:28,528 INFO L175 Difference]: Start difference. First operand has 85 places, 162 transitions, 2263 flow. Second operand 9 states and 872 transitions. [2023-11-12 02:12:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 256 transitions, 3991 flow [2023-11-12 02:12:28,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 256 transitions, 3742 flow, removed 70 selfloop flow, removed 5 redundant places. [2023-11-12 02:12:28,684 INFO L231 Difference]: Finished difference. Result has 91 places, 196 transitions, 3053 flow [2023-11-12 02:12:28,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3053, PETRI_PLACES=91, PETRI_TRANSITIONS=196} [2023-11-12 02:12:28,687 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 56 predicate places. [2023-11-12 02:12:28,687 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 196 transitions, 3053 flow [2023-11-12 02:12:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:28,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:28,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:28,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:12:28,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:28,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 61834776, now seen corresponding path program 4 times [2023-11-12 02:12:28,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:28,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131231457] [2023-11-12 02:12:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:29,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:29,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131231457] [2023-11-12 02:12:29,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131231457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:29,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443589637] [2023-11-12 02:12:29,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:12:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:12:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:12:29,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-11-12 02:12:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 196 transitions, 3053 flow. Second operand has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-11-12 02:12:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:31,386 INFO L124 PetriNetUnfolderBase]: 2382/3692 cut-off events. [2023-11-12 02:12:31,386 INFO L125 PetriNetUnfolderBase]: For 53200/53312 co-relation queries the response was YES. [2023-11-12 02:12:31,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26891 conditions, 3692 events. 2382/3692 cut-off events. For 53200/53312 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 19686 event pairs, 142 based on Foata normal form. 173/3865 useless extension candidates. Maximal degree in co-relation 26844. Up to 1980 conditions per place. [2023-11-12 02:12:31,441 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 125 selfloop transitions, 141 changer transitions 28/298 dead transitions. [2023-11-12 02:12:31,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 298 transitions, 4844 flow [2023-11-12 02:12:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:12:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:12:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1177 transitions. [2023-11-12 02:12:31,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48316912972085385 [2023-11-12 02:12:31,448 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1177 transitions. [2023-11-12 02:12:31,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1177 transitions. [2023-11-12 02:12:31,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:31,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1177 transitions. [2023-11-12 02:12:31,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 98.08333333333333) internal successors, (1177), 12 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:31,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:31,461 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:31,461 INFO L175 Difference]: Start difference. First operand has 91 places, 196 transitions, 3053 flow. Second operand 12 states and 1177 transitions. [2023-11-12 02:12:31,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 298 transitions, 4844 flow [2023-11-12 02:12:31,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 298 transitions, 4696 flow, removed 74 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:31,694 INFO L231 Difference]: Finished difference. Result has 105 places, 215 transitions, 3697 flow [2023-11-12 02:12:31,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3697, PETRI_PLACES=105, PETRI_TRANSITIONS=215} [2023-11-12 02:12:31,695 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-11-12 02:12:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 215 transitions, 3697 flow [2023-11-12 02:12:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:31,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:31,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:12:31,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:31,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1989745816, now seen corresponding path program 5 times [2023-11-12 02:12:31,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72583543] [2023-11-12 02:12:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:32,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:32,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72583543] [2023-11-12 02:12:32,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72583543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:32,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:32,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:32,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941385856] [2023-11-12 02:12:32,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:12:32,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:12:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:12:32,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-11-12 02:12:32,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 215 transitions, 3697 flow. Second operand has 9 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:32,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:32,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-11-12 02:12:32,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:34,395 INFO L124 PetriNetUnfolderBase]: 2978/4664 cut-off events. [2023-11-12 02:12:34,395 INFO L125 PetriNetUnfolderBase]: For 76277/76474 co-relation queries the response was YES. [2023-11-12 02:12:34,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36466 conditions, 4664 events. 2978/4664 cut-off events. For 76277/76474 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 26659 event pairs, 161 based on Foata normal form. 216/4878 useless extension candidates. Maximal degree in co-relation 36412. Up to 2470 conditions per place. [2023-11-12 02:12:34,525 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 144 selfloop transitions, 195 changer transitions 21/364 dead transitions. [2023-11-12 02:12:34,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 364 transitions, 6814 flow [2023-11-12 02:12:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:12:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:12:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 761 transitions. [2023-11-12 02:12:34,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685960591133005 [2023-11-12 02:12:34,529 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 761 transitions. [2023-11-12 02:12:34,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 761 transitions. [2023-11-12 02:12:34,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:34,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 761 transitions. [2023-11-12 02:12:34,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.125) internal successors, (761), 8 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:34,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:34,537 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:34,537 INFO L175 Difference]: Start difference. First operand has 105 places, 215 transitions, 3697 flow. Second operand 8 states and 761 transitions. [2023-11-12 02:12:34,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 364 transitions, 6814 flow [2023-11-12 02:12:34,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 364 transitions, 6521 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-11-12 02:12:34,917 INFO L231 Difference]: Finished difference. Result has 109 places, 300 transitions, 5760 flow [2023-11-12 02:12:34,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5760, PETRI_PLACES=109, PETRI_TRANSITIONS=300} [2023-11-12 02:12:34,920 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 74 predicate places. [2023-11-12 02:12:34,920 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 300 transitions, 5760 flow [2023-11-12 02:12:34,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:34,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:34,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:34,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:12:34,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:34,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash 956514248, now seen corresponding path program 6 times [2023-11-12 02:12:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:34,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349046038] [2023-11-12 02:12:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349046038] [2023-11-12 02:12:36,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349046038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:36,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:36,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502495406] [2023-11-12 02:12:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:12:36,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:12:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:12:36,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-11-12 02:12:36,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 300 transitions, 5760 flow. Second operand has 9 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:36,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:36,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-11-12 02:12:36,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:38,560 INFO L124 PetriNetUnfolderBase]: 3719/5883 cut-off events. [2023-11-12 02:12:38,561 INFO L125 PetriNetUnfolderBase]: For 114523/114743 co-relation queries the response was YES. [2023-11-12 02:12:38,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47860 conditions, 5883 events. 3719/5883 cut-off events. For 114523/114743 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 35660 event pairs, 118 based on Foata normal form. 333/6203 useless extension candidates. Maximal degree in co-relation 47803. Up to 3079 conditions per place. [2023-11-12 02:12:38,639 INFO L140 encePairwiseOnDemand]: 195/203 looper letters, 177 selfloop transitions, 196 changer transitions 50/427 dead transitions. [2023-11-12 02:12:38,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 427 transitions, 8535 flow [2023-11-12 02:12:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:12:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:12:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1025 transitions. [2023-11-12 02:12:38,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45902373488580384 [2023-11-12 02:12:38,644 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1025 transitions. [2023-11-12 02:12:38,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1025 transitions. [2023-11-12 02:12:38,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:38,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1025 transitions. [2023-11-12 02:12:38,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.18181818181819) internal successors, (1025), 11 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:38,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:38,655 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:38,655 INFO L175 Difference]: Start difference. First operand has 109 places, 300 transitions, 5760 flow. Second operand 11 states and 1025 transitions. [2023-11-12 02:12:38,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 427 transitions, 8535 flow [2023-11-12 02:12:39,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 427 transitions, 8379 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:39,446 INFO L231 Difference]: Finished difference. Result has 122 places, 321 transitions, 6828 flow [2023-11-12 02:12:39,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=5626, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6828, PETRI_PLACES=122, PETRI_TRANSITIONS=321} [2023-11-12 02:12:39,448 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 87 predicate places. [2023-11-12 02:12:39,448 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 321 transitions, 6828 flow [2023-11-12 02:12:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:39,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:39,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:39,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:12:39,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:12:39,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:39,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1942621562, now seen corresponding path program 1 times [2023-11-12 02:12:39,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:39,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741495326] [2023-11-12 02:12:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:39,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:40,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741495326] [2023-11-12 02:12:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741495326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:40,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119377691] [2023-11-12 02:12:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:40,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:12:40,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:12:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:40,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 203 [2023-11-12 02:12:40,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 321 transitions, 6828 flow. Second operand has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:40,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 203 [2023-11-12 02:12:40,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:42,682 INFO L124 PetriNetUnfolderBase]: 4073/6581 cut-off events. [2023-11-12 02:12:42,682 INFO L125 PetriNetUnfolderBase]: For 150419/150646 co-relation queries the response was YES. [2023-11-12 02:12:42,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54508 conditions, 6581 events. 4073/6581 cut-off events. For 150419/150646 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 42295 event pairs, 392 based on Foata normal form. 230/6790 useless extension candidates. Maximal degree in co-relation 54444. Up to 3398 conditions per place. [2023-11-12 02:12:42,764 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 345 selfloop transitions, 103 changer transitions 39/491 dead transitions. [2023-11-12 02:12:42,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 491 transitions, 10773 flow [2023-11-12 02:12:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:12:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 973 transitions. [2023-11-12 02:12:42,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793103448275862 [2023-11-12 02:12:42,769 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 973 transitions. [2023-11-12 02:12:42,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 973 transitions. [2023-11-12 02:12:42,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:42,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 973 transitions. [2023-11-12 02:12:42,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.3) internal successors, (973), 10 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:42,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:42,779 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:42,779 INFO L175 Difference]: Start difference. First operand has 122 places, 321 transitions, 6828 flow. Second operand 10 states and 973 transitions. [2023-11-12 02:12:42,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 491 transitions, 10773 flow