./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme --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 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:10,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:10,821 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:45:10,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:10,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:10,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:10,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:10,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:10,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:10,863 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:10,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:10,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:10,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:10,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:10,867 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:10,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:10,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:10,869 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:10,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:10,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:10,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:10,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:10,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:10,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:10,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:10,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:10,875 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:10,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:10,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:10,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:10,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:10,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:10,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:10,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:10,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:10,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:10,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:10,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:10,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:10,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:10,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:10,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:10,886 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_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 [2023-11-26 10:45:11,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:11,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:11,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:11,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:11,242 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:11,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i [2023-11-26 10:45:14,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:14,809 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:14,810 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/sv-benchmarks/c/pthread-wmm/mix007.oepc.i [2023-11-26 10:45:14,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/data/cbe9382c2/306a1110acf740a8a2770b1311c3633d/FLAGbae2b2dfa [2023-11-26 10:45:14,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/data/cbe9382c2/306a1110acf740a8a2770b1311c3633d [2023-11-26 10:45:14,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:14,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:14,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:14,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:14,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:14,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:14" (1/1) ... [2023-11-26 10:45:14,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286b106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:14, skipping insertion in model container [2023-11-26 10:45:14,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:14" (1/1) ... [2023-11-26 10:45:14,931 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:15,107 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_87bec329-0ba4-4806-8e7c-09d39b3739f8/sv-benchmarks/c/pthread-wmm/mix007.oepc.i[945,958] [2023-11-26 10:45:15,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:15,339 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:15,355 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_87bec329-0ba4-4806-8e7c-09d39b3739f8/sv-benchmarks/c/pthread-wmm/mix007.oepc.i[945,958] [2023-11-26 10:45:15,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:15,513 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:15,513 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:15,522 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:15,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15 WrapperNode [2023-11-26 10:45:15,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:15,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:15,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:15,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:15,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,603 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-26 10:45:15,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:15,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:15,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:15,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:15,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,687 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 10:45:15,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:15,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:15,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:15,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:15,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (1/1) ... [2023-11-26 10:45:15,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:15,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:15,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:15,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bec329-0ba4-4806-8e7c-09d39b3739f8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:45:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:45:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:45:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:45:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:45:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:45:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:45:15,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:45:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:45:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:45:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:45:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 10:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 10:45:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:45:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:45:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:45:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:15,907 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:45:16,181 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:16,184 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:16,718 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:17,071 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:17,072 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:45:17,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:17 BoogieIcfgContainer [2023-11-26 10:45:17,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:17,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:17,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:17,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:17,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:14" (1/3) ... [2023-11-26 10:45:17,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de22412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:17, skipping insertion in model container [2023-11-26 10:45:17,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:15" (2/3) ... [2023-11-26 10:45:17,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de22412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:17, skipping insertion in model container [2023-11-26 10:45:17,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:17" (3/3) ... [2023-11-26 10:45:17,092 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.oepc.i [2023-11-26 10:45:17,112 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:45:17,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:17,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:45:17,125 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:45:17,196 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:45:17,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:45:17,320 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-26 10:45:17,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:17,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-26 10:45:17,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:45:17,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-26 10:45:17,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:17,368 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;@11e616fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:17,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:45:17,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:45:17,379 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-26 10:45:17,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:17,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:17,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:45:17,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:17,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash 12455637, now seen corresponding path program 1 times [2023-11-26 10:45:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881818562] [2023-11-26 10:45:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:17,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881818562] [2023-11-26 10:45:18,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881818562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:18,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:18,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:45:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069969079] [2023-11-26 10:45:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:18,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-26 10:45:18,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:18,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:18,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-26 10:45:18,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:19,407 INFO L124 PetriNetUnfolderBase]: 2495/3960 cut-off events. [2023-11-26 10:45:19,407 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 10:45:19,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 3960 events. 2495/3960 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25066 event pairs, 1647 based on Foata normal form. 135/4028 useless extension candidates. Maximal degree in co-relation 7524. Up to 2779 conditions per place. [2023-11-26 10:45:19,459 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 10:45:19,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-26 10:45:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:45:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-26 10:45:19,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-26 10:45:19,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-26 10:45:19,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-26 10:45:19,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:19,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-26 10:45:19,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:19,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:19,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:19,495 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-26 10:45:19,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-26 10:45:19,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:45:19,511 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-26 10:45:19,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-26 10:45:19,520 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-26 10:45:19,520 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-26 10:45:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:19,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:19,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:19,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:19,522 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)] === [2023-11-26 10:45:19,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1855425157, now seen corresponding path program 1 times [2023-11-26 10:45:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878173970] [2023-11-26 10:45:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:20,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:20,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878173970] [2023-11-26 10:45:20,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878173970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:20,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:20,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:20,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782736021] [2023-11-26 10:45:20,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:20,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-26 10:45:20,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:20,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:20,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-26 10:45:20,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:28,721 INFO L124 PetriNetUnfolderBase]: 34962/49702 cut-off events. [2023-11-26 10:45:28,722 INFO L125 PetriNetUnfolderBase]: For 2349/2349 co-relation queries the response was YES. [2023-11-26 10:45:28,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99424 conditions, 49702 events. 34962/49702 cut-off events. For 2349/2349 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 353357 event pairs, 8485 based on Foata normal form. 0/48324 useless extension candidates. Maximal degree in co-relation 99414. Up to 20017 conditions per place. [2023-11-26 10:45:29,121 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 49 selfloop transitions, 8 changer transitions 102/171 dead transitions. [2023-11-26 10:45:29,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 171 transitions, 692 flow [2023-11-26 10:45:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:45:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:45:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2023-11-26 10:45:29,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2023-11-26 10:45:29,140 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 305 transitions. [2023-11-26 10:45:29,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 305 transitions. [2023-11-26 10:45:29,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:29,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 305 transitions. [2023-11-26 10:45:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.888888888888886) internal successors, (305), 9 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:29,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:29,154 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:29,154 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 305 transitions. [2023-11-26 10:45:29,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 171 transitions, 692 flow [2023-11-26 10:45:29,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 171 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:45:29,168 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2023-11-26 10:45:29,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-26 10:45:29,169 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-26 10:45:29,169 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2023-11-26 10:45:29,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:29,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:29,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:29,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:45:29,171 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)] === [2023-11-26 10:45:29,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2019372314, now seen corresponding path program 1 times [2023-11-26 10:45:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235848245] [2023-11-26 10:45:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235848245] [2023-11-26 10:45:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235848245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:29,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382607117] [2023-11-26 10:45:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:29,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-26 10:45:29,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:29,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:29,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-26 10:45:29,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:34,860 INFO L124 PetriNetUnfolderBase]: 17510/27804 cut-off events. [2023-11-26 10:45:34,860 INFO L125 PetriNetUnfolderBase]: For 25907/27080 co-relation queries the response was YES. [2023-11-26 10:45:35,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75376 conditions, 27804 events. 17510/27804 cut-off events. For 25907/27080 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 226472 event pairs, 4721 based on Foata normal form. 938/27729 useless extension candidates. Maximal degree in co-relation 75358. Up to 13995 conditions per place. [2023-11-26 10:45:35,158 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 3 changer transitions 47/110 dead transitions. [2023-11-26 10:45:35,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 598 flow [2023-11-26 10:45:35,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:45:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:45:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2023-11-26 10:45:35,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2023-11-26 10:45:35,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 228 transitions. [2023-11-26 10:45:35,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 228 transitions. [2023-11-26 10:45:35,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:35,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 228 transitions. [2023-11-26 10:45:35,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,168 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 7 states and 228 transitions. [2023-11-26 10:45:35,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 598 flow [2023-11-26 10:45:35,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 532 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-26 10:45:35,474 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 189 flow [2023-11-26 10:45:35,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-26 10:45:35,476 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-26 10:45:35,477 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 189 flow [2023-11-26 10:45:35,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:35,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:45:35,478 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)] === [2023-11-26 10:45:35,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1764075827, now seen corresponding path program 1 times [2023-11-26 10:45:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439021884] [2023-11-26 10:45:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:35,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439021884] [2023-11-26 10:45:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439021884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:35,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:35,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044012143] [2023-11-26 10:45:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:35,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-26 10:45:35,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:35,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:35,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-26 10:45:35,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:41,118 INFO L124 PetriNetUnfolderBase]: 21631/31645 cut-off events. [2023-11-26 10:45:41,118 INFO L125 PetriNetUnfolderBase]: For 28757/29202 co-relation queries the response was YES. [2023-11-26 10:45:41,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85768 conditions, 31645 events. 21631/31645 cut-off events. For 28757/29202 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 216328 event pairs, 3029 based on Foata normal form. 700/32174 useless extension candidates. Maximal degree in co-relation 85747. Up to 13313 conditions per place. [2023-11-26 10:45:41,418 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 61 selfloop transitions, 9 changer transitions 82/164 dead transitions. [2023-11-26 10:45:41,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 164 transitions, 901 flow [2023-11-26 10:45:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:45:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:45:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2023-11-26 10:45:41,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.606 [2023-11-26 10:45:41,422 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2023-11-26 10:45:41,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2023-11-26 10:45:41,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:41,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2023-11-26 10:45:41,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:41,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:41,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:41,428 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 189 flow. Second operand 10 states and 303 transitions. [2023-11-26 10:45:41,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 164 transitions, 901 flow [2023-11-26 10:45:42,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 164 transitions, 859 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-26 10:45:42,841 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 264 flow [2023-11-26 10:45:42,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-26 10:45:42,842 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-11-26 10:45:42,842 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 264 flow [2023-11-26 10:45:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:42,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:42,843 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] [2023-11-26 10:45:42,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:45:42,844 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)] === [2023-11-26 10:45:42,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash -730358992, now seen corresponding path program 1 times [2023-11-26 10:45:42,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:42,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009874493] [2023-11-26 10:45:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:42,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009874493] [2023-11-26 10:45:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009874493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:43,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:43,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:43,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514266470] [2023-11-26 10:45:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:43,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:43,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:45:43,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:43,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:43,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:45:43,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:49,443 INFO L124 PetriNetUnfolderBase]: 29720/44585 cut-off events. [2023-11-26 10:45:49,444 INFO L125 PetriNetUnfolderBase]: For 35775/40274 co-relation queries the response was YES. [2023-11-26 10:45:49,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109078 conditions, 44585 events. 29720/44585 cut-off events. For 35775/40274 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 334478 event pairs, 4615 based on Foata normal form. 1799/44653 useless extension candidates. Maximal degree in co-relation 109054. Up to 22125 conditions per place. [2023-11-26 10:45:49,863 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-26 10:45:49,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 88 transitions, 486 flow [2023-11-26 10:45:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-26 10:45:49,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-26 10:45:49,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-26 10:45:49,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-26 10:45:49,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:49,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-26 10:45:49,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:49,870 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 264 flow. Second operand 4 states and 141 transitions. [2023-11-26 10:45:49,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 88 transitions, 486 flow [2023-11-26 10:45:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 471 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-26 10:45:50,481 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 295 flow [2023-11-26 10:45:50,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-26 10:45:50,482 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-11-26 10:45:50,482 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 295 flow [2023-11-26 10:45:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:50,483 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] [2023-11-26 10:45:50,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:45:50,483 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)] === [2023-11-26 10:45:50,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 538024341, now seen corresponding path program 1 times [2023-11-26 10:45:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:50,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664991240] [2023-11-26 10:45:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:50,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664991240] [2023-11-26 10:45:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664991240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:50,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479712597] [2023-11-26 10:45:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:50,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:45:50,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:50,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:50,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:45:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:55,891 INFO L124 PetriNetUnfolderBase]: 24658/37157 cut-off events. [2023-11-26 10:45:55,891 INFO L125 PetriNetUnfolderBase]: For 24323/27604 co-relation queries the response was YES. [2023-11-26 10:45:56,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98360 conditions, 37157 events. 24658/37157 cut-off events. For 24323/27604 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 272009 event pairs, 2785 based on Foata normal form. 1564/37246 useless extension candidates. Maximal degree in co-relation 98335. Up to 12842 conditions per place. [2023-11-26 10:45:56,233 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2023-11-26 10:45:56,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 626 flow [2023-11-26 10:45:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:45:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-26 10:45:56,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2023-11-26 10:45:56,236 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-26 10:45:56,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-26 10:45:56,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:56,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-26 10:45:56,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,241 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 295 flow. Second operand 5 states and 181 transitions. [2023-11-26 10:45:56,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 626 flow [2023-11-26 10:45:56,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 611 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-26 10:45:56,260 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 348 flow [2023-11-26 10:45:56,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2023-11-26 10:45:56,266 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-11-26 10:45:56,266 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 348 flow [2023-11-26 10:45:56,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:56,267 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] [2023-11-26 10:45:56,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:45:56,267 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)] === [2023-11-26 10:45:56,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2099481877, now seen corresponding path program 1 times [2023-11-26 10:45:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528521348] [2023-11-26 10:45:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528521348] [2023-11-26 10:45:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528521348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:56,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:56,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:56,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813660780] [2023-11-26 10:45:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:56,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:56,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:56,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:45:56,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:56,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:45:56,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:01,291 INFO L124 PetriNetUnfolderBase]: 20234/30189 cut-off events. [2023-11-26 10:46:01,292 INFO L125 PetriNetUnfolderBase]: For 40313/42476 co-relation queries the response was YES. [2023-11-26 10:46:01,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90085 conditions, 30189 events. 20234/30189 cut-off events. For 40313/42476 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 212784 event pairs, 2211 based on Foata normal form. 900/29729 useless extension candidates. Maximal degree in co-relation 90061. Up to 10494 conditions per place. [2023-11-26 10:46:01,499 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 88 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2023-11-26 10:46:01,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 128 transitions, 777 flow [2023-11-26 10:46:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:01,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-26 10:46:01,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2023-11-26 10:46:01,501 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-26 10:46:01,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-26 10:46:01,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:01,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-26 10:46:01,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,505 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 348 flow. Second operand 6 states and 219 transitions. [2023-11-26 10:46:01,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 128 transitions, 777 flow [2023-11-26 10:46:01,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 128 transitions, 761 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:01,526 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 418 flow [2023-11-26 10:46:01,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-11-26 10:46:01,526 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2023-11-26 10:46:01,527 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 418 flow [2023-11-26 10:46:01,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:01,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:01,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:01,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:46:01,528 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)] === [2023-11-26 10:46:01,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:01,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2011263873, now seen corresponding path program 1 times [2023-11-26 10:46:01,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:01,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28277360] [2023-11-26 10:46:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:01,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat