./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu --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 a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:17,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:17,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:17,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:17,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:17,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:17,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:17,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:17,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:17,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:17,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:17,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:17,134 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:17,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:17,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:17,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:17,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:17,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:17,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:17,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:17,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:17,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:17,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:17,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:17,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:17,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:17,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:17,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:17,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:17,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:17,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:17,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:17,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:17,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:17,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:17,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:17,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:17,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:17,146 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:17,147 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_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 [2023-11-19 07:59:17,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:17,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:17,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:17,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:17,516 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:17,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2023-11-19 07:59:20,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:20,875 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:20,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2023-11-19 07:59:20,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/data/80c8d0059/4e927ccca4d9456fb6dd243e1b22aa2d/FLAG52f8fd83c [2023-11-19 07:59:20,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/data/80c8d0059/4e927ccca4d9456fb6dd243e1b22aa2d [2023-11-19 07:59:20,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:20,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:20,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:20,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:20,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:20,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:20" (1/1) ... [2023-11-19 07:59:20,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bba981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:20, skipping insertion in model container [2023-11-19 07:59:20,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:20" (1/1) ... [2023-11-19 07:59:20,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:21,215 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_603c0ea2-8d01-48c4-86e3-46b3a21108da/sv-benchmarks/c/pthread-wmm/mix026.oepc.i[945,958] [2023-11-19 07:59:21,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:21,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:21,621 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_603c0ea2-8d01-48c4-86e3-46b3a21108da/sv-benchmarks/c/pthread-wmm/mix026.oepc.i[945,958] [2023-11-19 07:59:21,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:21,711 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:21,711 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:21,720 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:21,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21 WrapperNode [2023-11-19 07:59:21,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:21,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:21,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:21,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:21,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,776 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-19 07:59:21,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:21,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:21,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:21,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:21,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:21,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:21,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:21,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:21,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (1/1) ... [2023-11-19 07:59:21,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:21,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:21,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c0ea2-8d01-48c4-86e3-46b3a21108da/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:59:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:59:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:59:21,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:59:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:59:21,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:59:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:59:21,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:59:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:59:21,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:59:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:59:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:21,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:21,924 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:59:22,135 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:22,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:22,597 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:22,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:22,778 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:59:22,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:22 BoogieIcfgContainer [2023-11-19 07:59:22,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:22,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:22,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:22,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:22,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:20" (1/3) ... [2023-11-19 07:59:22,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5593e6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:22, skipping insertion in model container [2023-11-19 07:59:22,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:21" (2/3) ... [2023-11-19 07:59:22,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5593e6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:22, skipping insertion in model container [2023-11-19 07:59:22,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:22" (3/3) ... [2023-11-19 07:59:22,794 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2023-11-19 07:59:22,804 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:59:22,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:22,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:59:22,817 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:59:22,891 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:59:22,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 135 transitions, 286 flow [2023-11-19 07:59:23,075 INFO L124 PetriNetUnfolderBase]: 3/131 cut-off events. [2023-11-19 07:59:23,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:23,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 3/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:59:23,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 135 transitions, 286 flow [2023-11-19 07:59:23,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 131 transitions, 274 flow [2023-11-19 07:59:23,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:59:23,119 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 131 transitions, 274 flow [2023-11-19 07:59:23,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 131 transitions, 274 flow [2023-11-19 07:59:23,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 131 transitions, 274 flow [2023-11-19 07:59:23,202 INFO L124 PetriNetUnfolderBase]: 3/131 cut-off events. [2023-11-19 07:59:23,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:23,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 3/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:59:23,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 3560 [2023-11-19 07:59:28,269 INFO L134 LiptonReduction]: Checked pairs total: 9527 [2023-11-19 07:59:28,270 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-19 07:59:28,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:28,294 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;@40fced25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:28,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:59:28,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:59:28,298 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:59:28,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:28,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:28,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:59:28,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:59:28,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 567180, now seen corresponding path program 1 times [2023-11-19 07:59:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495540500] [2023-11-19 07:59:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:28,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495540500] [2023-11-19 07:59:28,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495540500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:28,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:28,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:59:28,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67422963] [2023-11-19 07:59:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:28,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:28,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 251 [2023-11-19 07:59:28,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:28,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:28,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 251 [2023-11-19 07:59:28,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:30,233 INFO L124 PetriNetUnfolderBase]: 4903/6757 cut-off events. [2023-11-19 07:59:30,234 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:59:30,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 6757 events. 4903/6757 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32835 event pairs, 2535 based on Foata normal form. 0/6419 useless extension candidates. Maximal degree in co-relation 13593. Up to 5335 conditions per place. [2023-11-19 07:59:30,301 INFO L140 encePairwiseOnDemand]: 247/251 looper letters, 41 selfloop transitions, 2 changer transitions 2/49 dead transitions. [2023-11-19 07:59:30,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 209 flow [2023-11-19 07:59:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-19 07:59:30,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338645418326693 [2023-11-19 07:59:30,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-19 07:59:30,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-19 07:59:30,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:30,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-19 07:59:30,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:30,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:30,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:30,356 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 402 transitions. [2023-11-19 07:59:30,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 209 flow [2023-11-19 07:59:30,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:59:30,366 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-19 07:59:30,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, 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=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-11-19 07:59:30,372 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:59:30,373 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-19 07:59:30,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:30,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:30,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:30,430 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)] === [2023-11-19 07:59:30,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1784829158, now seen corresponding path program 1 times [2023-11-19 07:59:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:30,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234257566] [2023-11-19 07:59:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:30,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:30,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:30,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234257566] [2023-11-19 07:59:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234257566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:59:30,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225166378] [2023-11-19 07:59:30,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:30,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:30,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:30,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 251 [2023-11-19 07:59:30,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:30,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:30,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 251 [2023-11-19 07:59:30,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:33,913 INFO L124 PetriNetUnfolderBase]: 14367/19536 cut-off events. [2023-11-19 07:59:33,914 INFO L125 PetriNetUnfolderBase]: For 1005/1005 co-relation queries the response was YES. [2023-11-19 07:59:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40520 conditions, 19536 events. 14367/19536 cut-off events. For 1005/1005 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 100305 event pairs, 5297 based on Foata normal form. 458/19994 useless extension candidates. Maximal degree in co-relation 40510. Up to 13505 conditions per place. [2023-11-19 07:59:34,062 INFO L140 encePairwiseOnDemand]: 243/251 looper letters, 46 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-19 07:59:34,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 232 flow [2023-11-19 07:59:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-11-19 07:59:34,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059760956175299 [2023-11-19 07:59:34,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-11-19 07:59:34,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-11-19 07:59:34,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:34,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-11-19 07:59:34,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,072 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 381 transitions. [2023-11-19 07:59:34,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 232 flow [2023-11-19 07:59:34,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:34,075 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 118 flow [2023-11-19 07:59:34,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-11-19 07:59:34,076 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-19 07:59:34,076 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 118 flow [2023-11-19 07:59:34,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:34,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:34,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:59:34,078 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)] === [2023-11-19 07:59:34,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:34,078 INFO L85 PathProgramCache]: Analyzing trace with hash -504873204, now seen corresponding path program 1 times [2023-11-19 07:59:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588396930] [2023-11-19 07:59:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:34,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588396930] [2023-11-19 07:59:34,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588396930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:34,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:34,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:34,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312904818] [2023-11-19 07:59:34,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:34,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:34,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:34,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 251 [2023-11-19 07:59:34,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:34,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 251 [2023-11-19 07:59:34,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:37,011 INFO L124 PetriNetUnfolderBase]: 13285/18086 cut-off events. [2023-11-19 07:59:37,011 INFO L125 PetriNetUnfolderBase]: For 5520/5520 co-relation queries the response was YES. [2023-11-19 07:59:37,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43686 conditions, 18086 events. 13285/18086 cut-off events. For 5520/5520 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 89887 event pairs, 3757 based on Foata normal form. 230/18316 useless extension candidates. Maximal degree in co-relation 43674. Up to 8781 conditions per place. [2023-11-19 07:59:37,147 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 55 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-11-19 07:59:37,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 314 flow [2023-11-19 07:59:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:59:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 494 transitions. [2023-11-19 07:59:37,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49203187250996017 [2023-11-19 07:59:37,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 494 transitions. [2023-11-19 07:59:37,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 494 transitions. [2023-11-19 07:59:37,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:37,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 494 transitions. [2023-11-19 07:59:37,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,158 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 118 flow. Second operand 4 states and 494 transitions. [2023-11-19 07:59:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 314 flow [2023-11-19 07:59:37,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:37,244 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 152 flow [2023-11-19 07:59:37,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-19 07:59:37,246 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-19 07:59:37,250 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 152 flow [2023-11-19 07:59:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:37,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:37,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:59:37,252 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)] === [2023-11-19 07:59:37,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1526259636, now seen corresponding path program 1 times [2023-11-19 07:59:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:37,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76524996] [2023-11-19 07:59:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:37,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76524996] [2023-11-19 07:59:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76524996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:37,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:37,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111627489] [2023-11-19 07:59:37,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:37,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:37,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 251 [2023-11-19 07:59:37,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:37,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 251 [2023-11-19 07:59:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:39,618 INFO L124 PetriNetUnfolderBase]: 8236/12245 cut-off events. [2023-11-19 07:59:39,619 INFO L125 PetriNetUnfolderBase]: For 3081/3507 co-relation queries the response was YES. [2023-11-19 07:59:39,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28197 conditions, 12245 events. 8236/12245 cut-off events. For 3081/3507 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 76068 event pairs, 1481 based on Foata normal form. 899/12930 useless extension candidates. Maximal degree in co-relation 28182. Up to 5207 conditions per place. [2023-11-19 07:59:39,706 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 57 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-11-19 07:59:39,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 382 flow [2023-11-19 07:59:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:59:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 507 transitions. [2023-11-19 07:59:39,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049800796812749 [2023-11-19 07:59:39,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 507 transitions. [2023-11-19 07:59:39,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 507 transitions. [2023-11-19 07:59:39,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:39,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 507 transitions. [2023-11-19 07:59:39,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:39,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:39,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:39,717 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 152 flow. Second operand 4 states and 507 transitions. [2023-11-19 07:59:39,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 382 flow [2023-11-19 07:59:39,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:39,735 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 195 flow [2023-11-19 07:59:39,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-19 07:59:39,737 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-11-19 07:59:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 195 flow [2023-11-19 07:59:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:39,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:39,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:59:39,738 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)] === [2023-11-19 07:59:39,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash 566252622, now seen corresponding path program 1 times [2023-11-19 07:59:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022611892] [2023-11-19 07:59:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:39,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022611892] [2023-11-19 07:59:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022611892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:39,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769841924] [2023-11-19 07:59:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:39,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:39,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:39,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 251 [2023-11-19 07:59:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:39,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:39,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 251 [2023-11-19 07:59:39,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:41,230 INFO L124 PetriNetUnfolderBase]: 6469/9944 cut-off events. [2023-11-19 07:59:41,230 INFO L125 PetriNetUnfolderBase]: For 5226/5486 co-relation queries the response was YES. [2023-11-19 07:59:41,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28048 conditions, 9944 events. 6469/9944 cut-off events. For 5226/5486 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 63239 event pairs, 1401 based on Foata normal form. 597/10319 useless extension candidates. Maximal degree in co-relation 28030. Up to 3737 conditions per place. [2023-11-19 07:59:41,292 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 73 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2023-11-19 07:59:41,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 94 transitions, 530 flow [2023-11-19 07:59:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:59:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-19 07:59:41,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075697211155379 [2023-11-19 07:59:41,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-19 07:59:41,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-19 07:59:41,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:41,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-19 07:59:41,299 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) [2023-11-19 07:59:41,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,304 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 195 flow. Second operand 5 states and 637 transitions. [2023-11-19 07:59:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 94 transitions, 530 flow [2023-11-19 07:59:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:41,317 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 260 flow [2023-11-19 07:59:41,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-19 07:59:41,318 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-11-19 07:59:41,318 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 260 flow [2023-11-19 07:59:41,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:41,319 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] [2023-11-19 07:59:41,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:59:41,320 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)] === [2023-11-19 07:59:41,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1443618523, now seen corresponding path program 1 times [2023-11-19 07:59:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483777503] [2023-11-19 07:59:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:42,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483777503] [2023-11-19 07:59:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483777503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:42,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:42,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476446938] [2023-11-19 07:59:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:42,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 251 [2023-11-19 07:59:42,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:42,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:42,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 251 [2023-11-19 07:59:42,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:45,297 INFO L124 PetriNetUnfolderBase]: 11249/17495 cut-off events. [2023-11-19 07:59:45,297 INFO L125 PetriNetUnfolderBase]: For 28767/29265 co-relation queries the response was YES. [2023-11-19 07:59:45,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57539 conditions, 17495 events. 11249/17495 cut-off events. For 28767/29265 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 123253 event pairs, 1311 based on Foata normal form. 95/17385 useless extension candidates. Maximal degree in co-relation 57518. Up to 8006 conditions per place. [2023-11-19 07:59:45,435 INFO L140 encePairwiseOnDemand]: 242/251 looper letters, 114 selfloop transitions, 13 changer transitions 40/178 dead transitions. [2023-11-19 07:59:45,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 178 transitions, 1321 flow [2023-11-19 07:59:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:59:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 903 transitions. [2023-11-19 07:59:45,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139442231075697 [2023-11-19 07:59:45,441 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 903 transitions. [2023-11-19 07:59:45,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 903 transitions. [2023-11-19 07:59:45,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:45,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 903 transitions. [2023-11-19 07:59:45,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,451 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 260 flow. Second operand 7 states and 903 transitions. [2023-11-19 07:59:45,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 178 transitions, 1321 flow [2023-11-19 07:59:45,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 178 transitions, 1247 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:45,501 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 367 flow [2023-11-19 07:59:45,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-11-19 07:59:45,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-11-19 07:59:45,505 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 367 flow [2023-11-19 07:59:45,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:45,506 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] [2023-11-19 07:59:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:59:45,507 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)] === [2023-11-19 07:59:45,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1306677007, now seen corresponding path program 2 times [2023-11-19 07:59:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:45,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433511673] [2023-11-19 07:59:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:45,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433511673] [2023-11-19 07:59:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433511673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895084462] [2023-11-19 07:59:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:45,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:45,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 251 [2023-11-19 07:59:45,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:45,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:45,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 251 [2023-11-19 07:59:45,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:48,305 INFO L124 PetriNetUnfolderBase]: 9266/14417 cut-off events. [2023-11-19 07:59:48,306 INFO L125 PetriNetUnfolderBase]: For 31836/32594 co-relation queries the response was YES. [2023-11-19 07:59:48,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54845 conditions, 14417 events. 9266/14417 cut-off events. For 31836/32594 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 100947 event pairs, 1440 based on Foata normal form. 379/14487 useless extension candidates. Maximal degree in co-relation 54820. Up to 5867 conditions per place. [2023-11-19 07:59:48,438 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 119 selfloop transitions, 14 changer transitions 5/149 dead transitions. [2023-11-19 07:59:48,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 149 transitions, 1139 flow [2023-11-19 07:59:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 765 transitions. [2023-11-19 07:59:48,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079681274900398 [2023-11-19 07:59:48,443 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 765 transitions. [2023-11-19 07:59:48,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 765 transitions. [2023-11-19 07:59:48,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:48,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 765 transitions. [2023-11-19 07:59:48,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:48,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:48,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:48,452 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 367 flow. Second operand 6 states and 765 transitions. [2023-11-19 07:59:48,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 149 transitions, 1139 flow [2023-11-19 07:59:48,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 149 transitions, 1103 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:59:48,530 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 438 flow [2023-11-19 07:59:48,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-11-19 07:59:48,531 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2023-11-19 07:59:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 438 flow [2023-11-19 07:59:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:48,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:48,532 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] [2023-11-19 07:59:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:59:48,532 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)] === [2023-11-19 07:59:48,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1070042957, now seen corresponding path program 1 times [2023-11-19 07:59:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159279179] [2023-11-19 07:59:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159279179] [2023-11-19 07:59:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159279179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:59:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539088573] [2023-11-19 07:59:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:49,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 251 [2023-11-19 07:59:49,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 106.125) internal successors, (849), 8 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:49,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:49,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 251 [2023-11-19 07:59:49,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:52,642 INFO L124 PetriNetUnfolderBase]: 17488/25452 cut-off events. [2023-11-19 07:59:52,642 INFO L125 PetriNetUnfolderBase]: For 77651/77651 co-relation queries the response was YES. [2023-11-19 07:59:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105151 conditions, 25452 events. 17488/25452 cut-off events. For 77651/77651 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 158782 event pairs, 2500 based on Foata normal form. 13/25465 useless extension candidates. Maximal degree in co-relation 105125. Up to 13099 conditions per place. [2023-11-19 07:59:52,798 INFO L140 encePairwiseOnDemand]: 238/251 looper letters, 128 selfloop transitions, 57 changer transitions 82/267 dead transitions. [2023-11-19 07:59:52,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 267 transitions, 2166 flow [2023-11-19 07:59:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:59:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:59:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1313 transitions. [2023-11-19 07:59:52,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555233611010506 [2023-11-19 07:59:52,810 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1313 transitions. [2023-11-19 07:59:52,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1313 transitions. [2023-11-19 07:59:52,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:52,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1313 transitions. [2023-11-19 07:59:52,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:52,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:52,829 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:52,829 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 438 flow. Second operand 11 states and 1313 transitions. [2023-11-19 07:59:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 267 transitions, 2166 flow [2023-11-19 07:59:55,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 267 transitions, 2077 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-11-19 07:59:55,080 INFO L231 Difference]: Finished difference. Result has 77 places, 108 transitions, 896 flow [2023-11-19 07:59:55,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=896, PETRI_PLACES=77, PETRI_TRANSITIONS=108} [2023-11-19 07:59:55,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-11-19 07:59:55,082 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 108 transitions, 896 flow [2023-11-19 07:59:55,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.125) internal successors, (849), 8 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:55,083 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] [2023-11-19 07:59:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:59:55,083 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)] === [2023-11-19 07:59:55,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash -810045063, now seen corresponding path program 1 times [2023-11-19 07:59:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:55,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644130719] [2023-11-19 07:59:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:55,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:55,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644130719] [2023-11-19 07:59:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644130719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:55,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816464974] [2023-11-19 07:59:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:55,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 251 [2023-11-19 07:59:55,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 108 transitions, 896 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:55,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 251 [2023-11-19 07:59:55,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:56,942 INFO L124 PetriNetUnfolderBase]: 7353/10959 cut-off events. [2023-11-19 07:59:56,942 INFO L125 PetriNetUnfolderBase]: For 38044/38044 co-relation queries the response was YES. [2023-11-19 07:59:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49563 conditions, 10959 events. 7353/10959 cut-off events. For 38044/38044 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 63010 event pairs, 668 based on Foata normal form. 16/10975 useless extension candidates. Maximal degree in co-relation 49531. Up to 4371 conditions per place. [2023-11-19 07:59:57,018 INFO L140 encePairwiseOnDemand]: 242/251 looper letters, 167 selfloop transitions, 55 changer transitions 70/292 dead transitions. [2023-11-19 07:59:57,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 292 transitions, 2903 flow [2023-11-19 07:59:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 755 transitions. [2023-11-19 07:59:57,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50132802124834 [2023-11-19 07:59:57,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 755 transitions. [2023-11-19 07:59:57,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 755 transitions. [2023-11-19 07:59:57,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:57,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 755 transitions. [2023-11-19 07:59:57,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:57,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:57,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:57,031 INFO L175 Difference]: Start difference. First operand has 77 places, 108 transitions, 896 flow. Second operand 6 states and 755 transitions. [2023-11-19 07:59:57,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 292 transitions, 2903 flow [2023-11-19 07:59:57,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 292 transitions, 2666 flow, removed 61 selfloop flow, removed 6 redundant places. [2023-11-19 07:59:57,521 INFO L231 Difference]: Finished difference. Result has 76 places, 126 transitions, 1143 flow [2023-11-19 07:59:57,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1143, PETRI_PLACES=76, PETRI_TRANSITIONS=126} [2023-11-19 07:59:57,522 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2023-11-19 07:59:57,522 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 126 transitions, 1143 flow [2023-11-19 07:59:57,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:57,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:57,523 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] [2023-11-19 07:59:57,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:59:57,524 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)] === [2023-11-19 07:59:57,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2028623109, now seen corresponding path program 1 times [2023-11-19 07:59:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:57,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129446349] [2023-11-19 07:59:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:57,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:58,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129446349] [2023-11-19 07:59:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129446349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:58,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528484087] [2023-11-19 07:59:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:58,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 251 [2023-11-19 07:59:58,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 126 transitions, 1143 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) [2023-11-19 07:59:58,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:58,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 251 [2023-11-19 07:59:58,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:00,041 INFO L124 PetriNetUnfolderBase]: 5064/8390 cut-off events. [2023-11-19 08:00:00,041 INFO L125 PetriNetUnfolderBase]: For 30059/30509 co-relation queries the response was YES. [2023-11-19 08:00:00,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35884 conditions, 8390 events. 5064/8390 cut-off events. For 30059/30509 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 56176 event pairs, 941 based on Foata normal form. 160/8419 useless extension candidates. Maximal degree in co-relation 35852. Up to 3063 conditions per place. [2023-11-19 08:00:00,102 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 125 selfloop transitions, 24 changer transitions 48/235 dead transitions. [2023-11-19 08:00:00,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 235 transitions, 2278 flow [2023-11-19 08:00:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:00:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2023-11-19 08:00:00,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968696642003415 [2023-11-19 08:00:00,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2023-11-19 08:00:00,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2023-11-19 08:00:00,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:00,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2023-11-19 08:00:00,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,115 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:00,115 INFO L175 Difference]: Start difference. First operand has 76 places, 126 transitions, 1143 flow. Second operand 7 states and 873 transitions. [2023-11-19 08:00:00,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 235 transitions, 2278 flow [2023-11-19 08:00:00,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 235 transitions, 2260 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:00,326 INFO L231 Difference]: Finished difference. Result has 85 places, 131 transitions, 1285 flow [2023-11-19 08:00:00,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1285, PETRI_PLACES=85, PETRI_TRANSITIONS=131} [2023-11-19 08:00:00,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2023-11-19 08:00:00,327 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 131 transitions, 1285 flow [2023-11-19 08:00:00,328 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) [2023-11-19 08:00:00,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:00,328 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] [2023-11-19 08:00:00,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:00:00,328 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)] === [2023-11-19 08:00:00,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2137137901, now seen corresponding path program 2 times [2023-11-19 08:00:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:00,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722079990] [2023-11-19 08:00:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722079990] [2023-11-19 08:00:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722079990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:01,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:00:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530043774] [2023-11-19 08:00:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:01,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 251 [2023-11-19 08:00:01,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 131 transitions, 1285 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) [2023-11-19 08:00:01,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:01,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 251 [2023-11-19 08:00:01,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:02,644 INFO L124 PetriNetUnfolderBase]: 5675/9473 cut-off events. [2023-11-19 08:00:02,644 INFO L125 PetriNetUnfolderBase]: For 41050/41547 co-relation queries the response was YES. [2023-11-19 08:00:02,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42875 conditions, 9473 events. 5675/9473 cut-off events. For 41050/41547 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 65473 event pairs, 897 based on Foata normal form. 160/9493 useless extension candidates. Maximal degree in co-relation 42838. Up to 3482 conditions per place. [2023-11-19 08:00:02,739 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 132 selfloop transitions, 27 changer transitions 44/241 dead transitions. [2023-11-19 08:00:02,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 241 transitions, 2446 flow [2023-11-19 08:00:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:00:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2023-11-19 08:00:02,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968696642003415 [2023-11-19 08:00:02,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2023-11-19 08:00:02,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2023-11-19 08:00:02,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:02,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2023-11-19 08:00:02,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:02,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:02,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:02,752 INFO L175 Difference]: Start difference. First operand has 85 places, 131 transitions, 1285 flow. Second operand 7 states and 873 transitions. [2023-11-19 08:00:02,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 241 transitions, 2446 flow [2023-11-19 08:00:03,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 241 transitions, 2441 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:03,137 INFO L231 Difference]: Finished difference. Result has 90 places, 139 transitions, 1492 flow [2023-11-19 08:00:03,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1492, PETRI_PLACES=90, PETRI_TRANSITIONS=139} [2023-11-19 08:00:03,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2023-11-19 08:00:03,138 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 139 transitions, 1492 flow [2023-11-19 08:00:03,138 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) [2023-11-19 08:00:03,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:03,139 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] [2023-11-19 08:00:03,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:00:03,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:00:03,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash 47523519, now seen corresponding path program 3 times [2023-11-19 08:00:03,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:03,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477147154] [2023-11-19 08:00:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477147154] [2023-11-19 08:00:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477147154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:00:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554733064] [2023-11-19 08:00:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:03,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 251 [2023-11-19 08:00:03,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 139 transitions, 1492 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:03,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:03,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 251 [2023-11-19 08:00:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:04,841 INFO L124 PetriNetUnfolderBase]: 5216/8551 cut-off events. [2023-11-19 08:00:04,841 INFO L125 PetriNetUnfolderBase]: For 53392/53840 co-relation queries the response was YES. [2023-11-19 08:00:04,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41296 conditions, 8551 events. 5216/8551 cut-off events. For 53392/53840 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 58654 event pairs, 616 based on Foata normal form. 224/8630 useless extension candidates. Maximal degree in co-relation 41262. Up to 3321 conditions per place. [2023-11-19 08:00:04,923 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 142 selfloop transitions, 18 changer transitions 42/229 dead transitions. [2023-11-19 08:00:04,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 229 transitions, 2688 flow [2023-11-19 08:00:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:00:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 862 transitions. [2023-11-19 08:00:04,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906089926010245 [2023-11-19 08:00:04,928 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 862 transitions. [2023-11-19 08:00:04,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 862 transitions. [2023-11-19 08:00:04,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:04,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 862 transitions. [2023-11-19 08:00:04,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.14285714285714) internal successors, (862), 7 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,936 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:04,937 INFO L175 Difference]: Start difference. First operand has 90 places, 139 transitions, 1492 flow. Second operand 7 states and 862 transitions. [2023-11-19 08:00:04,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 229 transitions, 2688 flow [2023-11-19 08:00:05,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 229 transitions, 2672 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 08:00:05,469 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 1141 flow [2023-11-19 08:00:05,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1141, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2023-11-19 08:00:05,470 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2023-11-19 08:00:05,470 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 1141 flow [2023-11-19 08:00:05,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:05,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:05,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:05,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:00:05,472 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:00:05,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash -140067833, now seen corresponding path program 1 times [2023-11-19 08:00:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:05,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416561245] [2023-11-19 08:00:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:05,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:05,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416561245] [2023-11-19 08:00:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416561245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:05,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:05,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:05,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861793624] [2023-11-19 08:00:05,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:05,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:05,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:05,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 251 [2023-11-19 08:00:05,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 1141 flow. Second operand has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:05,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:05,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 251 [2023-11-19 08:00:05,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:07,628 INFO L124 PetriNetUnfolderBase]: 5941/9300 cut-off events. [2023-11-19 08:00:07,629 INFO L125 PetriNetUnfolderBase]: For 54134/54134 co-relation queries the response was YES. [2023-11-19 08:00:07,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48079 conditions, 9300 events. 5941/9300 cut-off events. For 54134/54134 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 56467 event pairs, 1433 based on Foata normal form. 2/9302 useless extension candidates. Maximal degree in co-relation 48048. Up to 4268 conditions per place. [2023-11-19 08:00:07,686 INFO L140 encePairwiseOnDemand]: 244/251 looper letters, 113 selfloop transitions, 13 changer transitions 107/233 dead transitions. [2023-11-19 08:00:07,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 233 transitions, 2778 flow [2023-11-19 08:00:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:00:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2023-11-19 08:00:07,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956175298804781 [2023-11-19 08:00:07,689 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2023-11-19 08:00:07,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2023-11-19 08:00:07,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:07,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2023-11-19 08:00:07,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:07,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:07,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:07,697 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 1141 flow. Second operand 5 states and 622 transitions. [2023-11-19 08:00:07,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 233 transitions, 2778 flow [2023-11-19 08:00:08,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 233 transitions, 2574 flow, removed 58 selfloop flow, removed 7 redundant places. [2023-11-19 08:00:08,107 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 817 flow [2023-11-19 08:00:08,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=817, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2023-11-19 08:00:08,108 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2023-11-19 08:00:08,108 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 817 flow [2023-11-19 08:00:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:08,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:00:08,109 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:00:08,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1906146859, now seen corresponding path program 2 times [2023-11-19 08:00:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:08,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162523328] [2023-11-19 08:00:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat