./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/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_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/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_750a3888-a7db-4cbc-9a01-81e32308842e/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 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:54,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:54,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:54,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:54,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:54,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:54,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:54,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:54,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:54,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:54,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:54,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:54,620 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:54,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:54,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:54,623 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:54,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:54,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:54,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:54,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:54,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:54,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:54,626 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:54,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:54,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:54,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:54,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:54,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:54,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:54,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:54,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:54,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:54,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:54,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:54,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:54,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:54,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:54,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:54,633 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:54,633 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_750a3888-a7db-4cbc-9a01-81e32308842e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa [2023-11-12 02:06:55,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:55,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:55,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:55,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:55,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:55,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:06:58,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:58,490 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:58,491 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:06:58,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/data/843e1798f/906f36cb15b34073bb6890fcaa789f45/FLAG4efe481a2 [2023-11-12 02:06:58,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/data/843e1798f/906f36cb15b34073bb6890fcaa789f45 [2023-11-12 02:06:58,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:58,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:58,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:58,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:58,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:58,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:58" (1/1) ... [2023-11-12 02:06:58,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26902dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:58, skipping insertion in model container [2023-11-12 02:06:58,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:58" (1/1) ... [2023-11-12 02:06:58,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:58,856 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_750a3888-a7db-4cbc-9a01-81e32308842e/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-12 02:06:59,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:59,171 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:59,189 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_750a3888-a7db-4cbc-9a01-81e32308842e/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-12 02:06:59,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:59,334 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:59,335 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:59,343 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:59,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59 WrapperNode [2023-11-12 02:06:59,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:59,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:59,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:59,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:59,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,403 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-12 02:06:59,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:59,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:59,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:59,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:59,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:59,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:59,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:59,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:59,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (1/1) ... [2023-11-12 02:06:59,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:59,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:59,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750a3888-a7db-4cbc-9a01-81e32308842e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:06:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:06:59,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:06:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:06:59,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:06:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:06:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:06:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:06:59,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:06:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:06:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:59,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:59,570 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 02:06:59,739 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:59,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:00,206 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:00,434 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:00,435 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:07:00,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:00 BoogieIcfgContainer [2023-11-12 02:07:00,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:00,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:00,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:00,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:00,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:58" (1/3) ... [2023-11-12 02:07:00,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f56834f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:00, skipping insertion in model container [2023-11-12 02:07:00,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:59" (2/3) ... [2023-11-12 02:07:00,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f56834f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:00, skipping insertion in model container [2023-11-12 02:07:00,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:00" (3/3) ... [2023-11-12 02:07:00,454 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:07:00,464 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:07:00,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:00,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:07:00,475 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:07:00,569 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:07:00,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 286 flow [2023-11-12 02:07:00,729 INFO L124 PetriNetUnfolderBase]: 2/131 cut-off events. [2023-11-12 02:07:00,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:00,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-12 02:07:00,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 286 flow [2023-11-12 02:07:00,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2023-11-12 02:07:00,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:07:00,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 131 transitions, 274 flow [2023-11-12 02:07:00,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 131 transitions, 274 flow [2023-11-12 02:07:00,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 274 flow [2023-11-12 02:07:00,837 INFO L124 PetriNetUnfolderBase]: 2/131 cut-off events. [2023-11-12 02:07:00,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:00,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-12 02:07:00,842 INFO L119 LiptonReduction]: Number of co-enabled transitions 3534 [2023-11-12 02:07:06,026 INFO L134 LiptonReduction]: Checked pairs total: 9456 [2023-11-12 02:07:06,026 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-12 02:07:06,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:06,050 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;@daeae5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:06,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:07:06,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:07:06,053 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-12 02:07:06,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:06,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:07:06,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:06,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash 566280, now seen corresponding path program 1 times [2023-11-12 02:07:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:06,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554052042] [2023-11-12 02:07:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,541 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 02:07:06,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554052042] [2023-11-12 02:07:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554052042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:06,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:06,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739425643] [2023-11-12 02:07:06,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:06,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:06,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 249 [2023-11-12 02:07:06,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 02:07:06,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:06,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 249 [2023-11-12 02:07:06,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:08,001 INFO L124 PetriNetUnfolderBase]: 4903/6900 cut-off events. [2023-11-12 02:07:08,001 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-12 02:07:08,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13748 conditions, 6900 events. 4903/6900 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 37187 event pairs, 1375 based on Foata normal form. 0/6550 useless extension candidates. Maximal degree in co-relation 13736. Up to 5335 conditions per place. [2023-11-12 02:07:08,065 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 41 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2023-11-12 02:07:08,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 211 flow [2023-11-12 02:07:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-11-12 02:07:08,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2023-11-12 02:07:08,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-11-12 02:07:08,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-11-12 02:07:08,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:08,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-11-12 02:07:08,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 02:07:08,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 02:07:08,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 02:07:08,102 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 405 transitions. [2023-11-12 02:07:08,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 211 flow [2023-11-12 02:07:08,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:07:08,109 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 70 flow [2023-11-12 02:07:08,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-12 02:07:08,114 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-12 02:07:08,115 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 70 flow [2023-11-12 02:07:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 02:07:08,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:08,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:08,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:07:08,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:08,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1295880354, now seen corresponding path program 1 times [2023-11-12 02:07:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:08,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745218151] [2023-11-12 02:07:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:08,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:08,404 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 02:07:08,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:08,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745218151] [2023-11-12 02:07:08,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745218151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:08,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:08,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538353837] [2023-11-12 02:07:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:08,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:08,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 249 [2023-11-12 02:07:08,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 02:07:08,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:08,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 249 [2023-11-12 02:07:08,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:09,522 INFO L124 PetriNetUnfolderBase]: 4279/5911 cut-off events. [2023-11-12 02:07:09,522 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2023-11-12 02:07:09,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12335 conditions, 5911 events. 4279/5911 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29249 event pairs, 1463 based on Foata normal form. 128/5985 useless extension candidates. Maximal degree in co-relation 12325. Up to 4033 conditions per place. [2023-11-12 02:07:09,575 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 34 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-11-12 02:07:09,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 166 flow [2023-11-12 02:07:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-11-12 02:07:09,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234270414993306 [2023-11-12 02:07:09,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-11-12 02:07:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-11-12 02:07:09,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:09,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-11-12 02:07:09,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 02:07:09,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 02:07:09,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 02:07:09,586 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 3 states and 391 transitions. [2023-11-12 02:07:09,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 166 flow [2023-11-12 02:07:09,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:09,589 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 74 flow [2023-11-12 02:07:09,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-12 02:07:09,590 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-12 02:07:09,591 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 74 flow [2023-11-12 02:07:09,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 02:07:09,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:09,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:09,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:07:09,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:09,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:09,596 INFO L85 PathProgramCache]: Analyzing trace with hash -256990323, now seen corresponding path program 1 times [2023-11-12 02:07:09,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:09,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231056690] [2023-11-12 02:07:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:09,925 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 02:07:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231056690] [2023-11-12 02:07:09,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231056690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:09,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:09,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108639826] [2023-11-12 02:07:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:09,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:09,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:09,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 249 [2023-11-12 02:07:09,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 02:07:09,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:09,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 249 [2023-11-12 02:07:09,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:12,972 INFO L124 PetriNetUnfolderBase]: 15235/20712 cut-off events. [2023-11-12 02:07:12,972 INFO L125 PetriNetUnfolderBase]: For 1538/1538 co-relation queries the response was YES. [2023-11-12 02:07:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43763 conditions, 20712 events. 15235/20712 cut-off events. For 1538/1538 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 107684 event pairs, 2939 based on Foata normal form. 536/21248 useless extension candidates. Maximal degree in co-relation 43752. Up to 10161 conditions per place. [2023-11-12 02:07:13,112 INFO L140 encePairwiseOnDemand]: 240/249 looper letters, 58 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2023-11-12 02:07:13,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 290 flow [2023-11-12 02:07:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 496 transitions. [2023-11-12 02:07:13,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979919678714859 [2023-11-12 02:07:13,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 496 transitions. [2023-11-12 02:07:13,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 496 transitions. [2023-11-12 02:07:13,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:13,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 496 transitions. [2023-11-12 02:07:13,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 02:07:13,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 02:07:13,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 02:07:13,123 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 74 flow. Second operand 4 states and 496 transitions. [2023-11-12 02:07:13,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 290 flow [2023-11-12 02:07:13,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:13,146 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 131 flow [2023-11-12 02:07:13,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-11-12 02:07:13,148 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-11-12 02:07:13,152 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 131 flow [2023-11-12 02:07:13,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 02:07:13,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:13,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:13,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:07:13,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:13,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1778598931, now seen corresponding path program 1 times [2023-11-12 02:07:13,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086739241] [2023-11-12 02:07:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:13,361 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 02:07:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086739241] [2023-11-12 02:07:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086739241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739388300] [2023-11-12 02:07:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:13,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:13,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-11-12 02:07:13,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:13,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-11-12 02:07:13,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:16,260 INFO L124 PetriNetUnfolderBase]: 10880/15605 cut-off events. [2023-11-12 02:07:16,260 INFO L125 PetriNetUnfolderBase]: For 7190/7608 co-relation queries the response was YES. [2023-11-12 02:07:16,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37940 conditions, 15605 events. 10880/15605 cut-off events. For 7190/7608 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 94995 event pairs, 3024 based on Foata normal form. 85/14914 useless extension candidates. Maximal degree in co-relation 37926. Up to 13730 conditions per place. [2023-11-12 02:07:16,385 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 43 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-12 02:07:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 279 flow [2023-11-12 02:07:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-12 02:07:16,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287817938420348 [2023-11-12 02:07:16,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-12 02:07:16,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-12 02:07:16,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:16,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-12 02:07:16,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 02:07:16,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 02:07:16,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 02:07:16,394 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 131 flow. Second operand 3 states and 395 transitions. [2023-11-12 02:07:16,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 279 flow [2023-11-12 02:07:16,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:16,400 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 163 flow [2023-11-12 02:07:16,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-12 02:07:16,402 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-12 02:07:16,403 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 163 flow [2023-11-12 02:07:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:16,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:16,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:16,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:07:16,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:16,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2013528368, now seen corresponding path program 1 times [2023-11-12 02:07:16,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:16,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350151587] [2023-11-12 02:07:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:16,612 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 02:07:16,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:16,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350151587] [2023-11-12 02:07:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350151587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:16,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910417371] [2023-11-12 02:07:16,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:16,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:16,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:16,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 249 [2023-11-12 02:07:16,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 02:07:16,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:16,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 249 [2023-11-12 02:07:16,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:20,315 INFO L124 PetriNetUnfolderBase]: 22610/30947 cut-off events. [2023-11-12 02:07:20,315 INFO L125 PetriNetUnfolderBase]: For 17289/17289 co-relation queries the response was YES. [2023-11-12 02:07:20,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79452 conditions, 30947 events. 22610/30947 cut-off events. For 17289/17289 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 174542 event pairs, 4929 based on Foata normal form. 240/31187 useless extension candidates. Maximal degree in co-relation 79436. Up to 12767 conditions per place. [2023-11-12 02:07:20,465 INFO L140 encePairwiseOnDemand]: 239/249 looper letters, 69 selfloop transitions, 18 changer transitions 1/88 dead transitions. [2023-11-12 02:07:20,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 88 transitions, 500 flow [2023-11-12 02:07:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 505 transitions. [2023-11-12 02:07:20,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070281124497992 [2023-11-12 02:07:20,468 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 505 transitions. [2023-11-12 02:07:20,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 505 transitions. [2023-11-12 02:07:20,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:20,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 505 transitions. [2023-11-12 02:07:20,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 02:07:20,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 02:07:20,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 02:07:20,475 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 163 flow. Second operand 4 states and 505 transitions. [2023-11-12 02:07:20,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 88 transitions, 500 flow [2023-11-12 02:07:20,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 88 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:20,482 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 310 flow [2023-11-12 02:07:20,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-12 02:07:20,483 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-11-12 02:07:20,484 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 310 flow [2023-11-12 02:07:20,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 02:07:20,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:20,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:20,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:07:20,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:20,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1947926666, now seen corresponding path program 1 times [2023-11-12 02:07:20,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:20,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622082792] [2023-11-12 02:07:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622082792] [2023-11-12 02:07:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622082792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:20,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:20,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124509255] [2023-11-12 02:07:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:20,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 249 [2023-11-12 02:07:20,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 02:07:20,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:20,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 249 [2023-11-12 02:07:20,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:23,774 INFO L124 PetriNetUnfolderBase]: 13736/20597 cut-off events. [2023-11-12 02:07:23,774 INFO L125 PetriNetUnfolderBase]: For 20086/21570 co-relation queries the response was YES. [2023-11-12 02:07:23,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53089 conditions, 20597 events. 13736/20597 cut-off events. For 20086/21570 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 140426 event pairs, 2451 based on Foata normal form. 1920/22006 useless extension candidates. Maximal degree in co-relation 53069. Up to 12565 conditions per place. [2023-11-12 02:07:23,905 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 86 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2023-11-12 02:07:23,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 114 transitions, 802 flow [2023-11-12 02:07:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-12 02:07:23,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116465863453815 [2023-11-12 02:07:23,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-12 02:07:23,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-12 02:07:23,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:23,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-12 02:07:23,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:07:23,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states 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 02:07:23,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states 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 02:07:23,918 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 310 flow. Second operand 5 states and 637 transitions. [2023-11-12 02:07:23,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 114 transitions, 802 flow [2023-11-12 02:07:23,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 790 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:23,934 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 379 flow [2023-11-12 02:07:23,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-11-12 02:07:23,936 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-11-12 02:07:23,936 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 379 flow [2023-11-12 02:07:23,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 02:07:23,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:23,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:23,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:07:23,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:23,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash -871129969, now seen corresponding path program 1 times [2023-11-12 02:07:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:23,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590106433] [2023-11-12 02:07:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:24,284 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 02:07:24,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:24,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590106433] [2023-11-12 02:07:24,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590106433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:24,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:24,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:24,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415777188] [2023-11-12 02:07:24,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:24,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:24,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 249 [2023-11-12 02:07:24,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 02:07:24,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:24,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 249 [2023-11-12 02:07:24,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:26,845 INFO L124 PetriNetUnfolderBase]: 11431/17624 cut-off events. [2023-11-12 02:07:26,845 INFO L125 PetriNetUnfolderBase]: For 21908/23016 co-relation queries the response was YES. [2023-11-12 02:07:26,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57552 conditions, 17624 events. 11431/17624 cut-off events. For 21908/23016 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 123340 event pairs, 1332 based on Foata normal form. 1316/18553 useless extension candidates. Maximal degree in co-relation 57527. Up to 5703 conditions per place. [2023-11-12 02:07:27,120 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 117 selfloop transitions, 19 changer transitions 3/157 dead transitions. [2023-11-12 02:07:27,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 157 transitions, 1173 flow [2023-11-12 02:07:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:07:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 894 transitions. [2023-11-12 02:07:27,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129087779690189 [2023-11-12 02:07:27,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 894 transitions. [2023-11-12 02:07:27,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 894 transitions. [2023-11-12 02:07:27,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:27,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 894 transitions. [2023-11-12 02:07:27,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 02:07:27,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 249.0) internal successors, (1992), 8 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 02:07:27,134 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 249.0) internal successors, (1992), 8 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states 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 02:07:27,135 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 379 flow. Second operand 7 states and 894 transitions. [2023-11-12 02:07:27,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 157 transitions, 1173 flow [2023-11-12 02:07:27,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 157 transitions, 1168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:27,250 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 508 flow [2023-11-12 02:07:27,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-12 02:07:27,251 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-11-12 02:07:27,251 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 508 flow [2023-11-12 02:07:27,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 02:07:27,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:27,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:27,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:07:27,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:27,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1703883339, now seen corresponding path program 1 times [2023-11-12 02:07:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:27,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430790036] [2023-11-12 02:07:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:27,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:27,554 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 02:07:27,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:27,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430790036] [2023-11-12 02:07:27,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430790036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:27,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:27,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:07:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773170908] [2023-11-12 02:07:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:27,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:27,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 249 [2023-11-12 02:07:27,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 02:07:27,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:27,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 249 [2023-11-12 02:07:27,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:30,360 INFO L124 PetriNetUnfolderBase]: 10720/16524 cut-off events. [2023-11-12 02:07:30,360 INFO L125 PetriNetUnfolderBase]: For 33355/34381 co-relation queries the response was YES. [2023-11-12 02:07:30,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62557 conditions, 16524 events. 10720/16524 cut-off events. For 33355/34381 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 115259 event pairs, 1155 based on Foata normal form. 599/16745 useless extension candidates. Maximal degree in co-relation 62528. Up to 5456 conditions per place. [2023-11-12 02:07:30,456 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 131 selfloop transitions, 28 changer transitions 17/194 dead transitions. [2023-11-12 02:07:30,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 194 transitions, 1560 flow [2023-11-12 02:07:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:07:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:07:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1149 transitions. [2023-11-12 02:07:30,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127175368139224 [2023-11-12 02:07:30,462 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1149 transitions. [2023-11-12 02:07:30,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1149 transitions. [2023-11-12 02:07:30,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:30,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1149 transitions. [2023-11-12 02:07:30,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 9 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 02:07:30,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states 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 02:07:30,473 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states 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 02:07:30,474 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 508 flow. Second operand 9 states and 1149 transitions. [2023-11-12 02:07:30,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 194 transitions, 1560 flow [2023-11-12 02:07:32,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 194 transitions, 1510 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-12 02:07:32,720 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 636 flow [2023-11-12 02:07:32,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=636, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2023-11-12 02:07:32,721 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2023-11-12 02:07:32,721 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 636 flow [2023-11-12 02:07:32,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 02:07:32,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:32,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:32,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:07:32,722 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:32,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1887985029, now seen corresponding path program 1 times [2023-11-12 02:07:32,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:32,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000956797] [2023-11-12 02:07:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:32,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:33,077 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 02:07:33,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000956797] [2023-11-12 02:07:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000956797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:33,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:33,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806318923] [2023-11-12 02:07:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:33,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:33,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 249 [2023-11-12 02:07:33,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 02:07:33,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:33,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 249 [2023-11-12 02:07:33,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:37,579 INFO L124 PetriNetUnfolderBase]: 22744/33181 cut-off events. [2023-11-12 02:07:37,580 INFO L125 PetriNetUnfolderBase]: For 117728/117728 co-relation queries the response was YES. [2023-11-12 02:07:37,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137709 conditions, 33181 events. 22744/33181 cut-off events. For 117728/117728 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 217570 event pairs, 1829 based on Foata normal form. 13/33194 useless extension candidates. Maximal degree in co-relation 137677. Up to 10853 conditions per place. [2023-11-12 02:07:37,697 INFO L140 encePairwiseOnDemand]: 238/249 looper letters, 101 selfloop transitions, 36 changer transitions 117/254 dead transitions. [2023-11-12 02:07:37,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 254 transitions, 2686 flow [2023-11-12 02:07:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:07:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 730 transitions. [2023-11-12 02:07:37,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4886211512717537 [2023-11-12 02:07:37,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 730 transitions. [2023-11-12 02:07:37,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 730 transitions. [2023-11-12 02:07:37,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:37,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 730 transitions. [2023-11-12 02:07:37,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 02:07:37,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states 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 02:07:37,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states 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 02:07:37,709 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 636 flow. Second operand 6 states and 730 transitions. [2023-11-12 02:07:37,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 254 transitions, 2686 flow [2023-11-12 02:07:43,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 254 transitions, 2249 flow, removed 154 selfloop flow, removed 4 redundant places. [2023-11-12 02:07:43,806 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 682 flow [2023-11-12 02:07:43,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-12 02:07:43,807 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2023-11-12 02:07:43,807 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 682 flow [2023-11-12 02:07:43,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 02:07:43,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:43,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:43,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:07:43,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:43,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1625290355, now seen corresponding path program 2 times [2023-11-12 02:07:43,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:43,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751170277] [2023-11-12 02:07:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:44,311 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 02:07:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751170277] [2023-11-12 02:07:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751170277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:44,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:44,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:07:44,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152530484] [2023-11-12 02:07:44,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:44,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:44,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:44,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:44,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 249 [2023-11-12 02:07:44,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 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 02:07:44,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:44,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 249 [2023-11-12 02:07:44,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:45,596 INFO L124 PetriNetUnfolderBase]: 4392/7094 cut-off events. [2023-11-12 02:07:45,596 INFO L125 PetriNetUnfolderBase]: For 19061/19500 co-relation queries the response was YES. [2023-11-12 02:07:45,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26752 conditions, 7094 events. 4392/7094 cut-off events. For 19061/19500 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 45721 event pairs, 906 based on Foata normal form. 203/7166 useless extension candidates. Maximal degree in co-relation 26715. Up to 2738 conditions per place. [2023-11-12 02:07:45,621 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 75 selfloop transitions, 18 changer transitions 54/163 dead transitions. [2023-11-12 02:07:45,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 163 transitions, 1600 flow [2023-11-12 02:07:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:07:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:07:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 995 transitions. [2023-11-12 02:07:45,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994979919678715 [2023-11-12 02:07:45,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 995 transitions. [2023-11-12 02:07:45,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 995 transitions. [2023-11-12 02:07:45,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:45,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 995 transitions. [2023-11-12 02:07:45,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.375) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 02:07:45,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states 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 02:07:45,635 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states 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 02:07:45,635 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 682 flow. Second operand 8 states and 995 transitions. [2023-11-12 02:07:45,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 163 transitions, 1600 flow [2023-11-12 02:07:45,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 163 transitions, 1490 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-11-12 02:07:45,851 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 503 flow [2023-11-12 02:07:45,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=503, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2023-11-12 02:07:45,852 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-11-12 02:07:45,852 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 503 flow [2023-11-12 02:07:45,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 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 02:07:45,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:45,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:45,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:07:45,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:07:45,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash -784682936, now seen corresponding path program 1 times [2023-11-12 02:07:45,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:45,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616820148] [2023-11-12 02:07:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:47,288 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 02:07:47,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:47,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616820148] [2023-11-12 02:07:47,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616820148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:47,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:47,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:07:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710144285] [2023-11-12 02:07:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:07:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:07:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:47,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 249 [2023-11-12 02:07:47,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:47,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:47,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 249 [2023-11-12 02:07:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand