./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/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_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/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_3ba73af1-2368-4c53-a967-0d7351f0547c/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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:22,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:22,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:00:22,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:22,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:22,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:22,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:22,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:22,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:22,922 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:22,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:22,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:22,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:22,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:22,925 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:22,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:22,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:22,926 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:22,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:22,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:22,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:22,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:22,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:22,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:22,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:22,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:22,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:22,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:22,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:22,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:22,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:22,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:22,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:22,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:22,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:22,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:22,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:22,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:22,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:22,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:22,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:22,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:22,938 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_3ba73af1-2368-4c53-a967-0d7351f0547c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-26 12:00:23,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:23,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:23,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:23,280 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:23,281 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:23,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 12:00:26,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:27,160 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:27,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 12:00:27,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/data/2e2aeaae2/b56667d6e9794406900fb6c00cc56b3d/FLAG9c41b2160 [2023-11-26 12:00:27,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/data/2e2aeaae2/b56667d6e9794406900fb6c00cc56b3d [2023-11-26 12:00:27,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:27,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:27,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:27,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:27,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:27,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500b7109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27, skipping insertion in model container [2023-11-26 12:00:27,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:27,506 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_3ba73af1-2368-4c53-a967-0d7351f0547c/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2023-11-26 12:00:27,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:27,529 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:27,565 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_3ba73af1-2368-4c53-a967-0d7351f0547c/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2023-11-26 12:00:27,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:27,590 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:27,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27 WrapperNode [2023-11-26 12:00:27,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:27,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:27,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:27,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:27,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,664 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 183 [2023-11-26 12:00:27,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:27,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:27,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:27,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:27,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,705 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-26 12:00:27,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:27,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:27,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:27,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:27,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (1/1) ... [2023-11-26 12:00:27,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:27,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:27,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:27,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba73af1-2368-4c53-a967-0d7351f0547c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:00:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:00:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:00:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:00:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:00:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:00:27,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:00:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:00:27,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:00:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:00:27,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:00:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:00:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:00:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:27,880 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 12:00:28,062 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:28,065 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:28,677 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:29,239 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:29,240 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 12:00:29,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:29 BoogieIcfgContainer [2023-11-26 12:00:29,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:29,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:29,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:29,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:29,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:27" (1/3) ... [2023-11-26 12:00:29,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e27cd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:29, skipping insertion in model container [2023-11-26 12:00:29,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:27" (2/3) ... [2023-11-26 12:00:29,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e27cd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:29, skipping insertion in model container [2023-11-26 12:00:29,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:29" (3/3) ... [2023-11-26 12:00:29,256 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-26 12:00:29,273 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:29,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:29,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:00:29,287 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:29,380 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:00:29,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2023-11-26 12:00:29,506 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2023-11-26 12:00:29,506 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:00:29,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-26 12:00:29,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2023-11-26 12:00:29,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2023-11-26 12:00:29,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:29,559 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;@6b95edf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:29,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 12:00:29,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:29,596 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2023-11-26 12:00:29,596 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:00:29,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:29,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:29,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 156581823, now seen corresponding path program 1 times [2023-11-26 12:00:29,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:29,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195266302] [2023-11-26 12:00:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:30,661 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 12:00:30,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:30,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195266302] [2023-11-26 12:00:30,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195266302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:30,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:30,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919629414] [2023-11-26 12:00:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:30,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:30,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:30,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:30,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:30,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:30,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:30,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:32,414 INFO L124 PetriNetUnfolderBase]: 4644/6290 cut-off events. [2023-11-26 12:00:32,415 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2023-11-26 12:00:32,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12850 conditions, 6290 events. 4644/6290 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26817 event pairs, 1292 based on Foata normal form. 1/4654 useless extension candidates. Maximal degree in co-relation 11342. Up to 2790 conditions per place. [2023-11-26 12:00:32,487 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 101 selfloop transitions, 13 changer transitions 1/116 dead transitions. [2023-11-26 12:00:32,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 116 transitions, 507 flow [2023-11-26 12:00:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2023-11-26 12:00:32,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-26 12:00:32,513 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 136 transitions. [2023-11-26 12:00:32,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 136 transitions. [2023-11-26 12:00:32,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:32,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 136 transitions. [2023-11-26 12:00:32,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 12:00:32,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:32,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:32,537 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 5 states and 136 transitions. [2023-11-26 12:00:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 116 transitions, 507 flow [2023-11-26 12:00:32,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 116 transitions, 477 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:32,569 INFO L231 Difference]: Finished difference. Result has 46 places, 57 transitions, 178 flow [2023-11-26 12:00:32,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=46, PETRI_TRANSITIONS=57} [2023-11-26 12:00:32,577 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-26 12:00:32,578 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 57 transitions, 178 flow [2023-11-26 12:00:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:32,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:32,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:32,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:32,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:32,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1349175001, now seen corresponding path program 2 times [2023-11-26 12:00:32,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:32,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938419837] [2023-11-26 12:00:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:33,027 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 12:00:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938419837] [2023-11-26 12:00:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938419837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072513777] [2023-11-26 12:00:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:33,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:33,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:33,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 57 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:33,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:33,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:34,662 INFO L124 PetriNetUnfolderBase]: 6056/8405 cut-off events. [2023-11-26 12:00:34,662 INFO L125 PetriNetUnfolderBase]: For 1831/1831 co-relation queries the response was YES. [2023-11-26 12:00:34,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19935 conditions, 8405 events. 6056/8405 cut-off events. For 1831/1831 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 40188 event pairs, 2727 based on Foata normal form. 1/7091 useless extension candidates. Maximal degree in co-relation 16739. Up to 4843 conditions per place. [2023-11-26 12:00:34,753 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 114 selfloop transitions, 7 changer transitions 3/125 dead transitions. [2023-11-26 12:00:34,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 125 transitions, 626 flow [2023-11-26 12:00:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2023-11-26 12:00:34,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-11-26 12:00:34,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2023-11-26 12:00:34,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2023-11-26 12:00:34,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:34,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2023-11-26 12:00:34,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 12:00:34,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:34,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:34,774 INFO L175 Difference]: Start difference. First operand has 46 places, 57 transitions, 178 flow. Second operand 5 states and 131 transitions. [2023-11-26 12:00:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 125 transitions, 626 flow [2023-11-26 12:00:34,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 125 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:34,807 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 235 flow [2023-11-26 12:00:34,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-11-26 12:00:34,809 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2023-11-26 12:00:34,809 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 235 flow [2023-11-26 12:00:34,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:34,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:34,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:34,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:34,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:34,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2073642059, now seen corresponding path program 3 times [2023-11-26 12:00:34,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156361429] [2023-11-26 12:00:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,214 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 12:00:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156361429] [2023-11-26 12:00:35,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156361429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072897992] [2023-11-26 12:00:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:35,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:35,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:35,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:35,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:35,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,817 INFO L124 PetriNetUnfolderBase]: 7156/10075 cut-off events. [2023-11-26 12:00:36,818 INFO L125 PetriNetUnfolderBase]: For 5721/5721 co-relation queries the response was YES. [2023-11-26 12:00:36,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25248 conditions, 10075 events. 7156/10075 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 51012 event pairs, 3919 based on Foata normal form. 1/8845 useless extension candidates. Maximal degree in co-relation 17789. Up to 7387 conditions per place. [2023-11-26 12:00:36,920 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 116 selfloop transitions, 8 changer transitions 3/128 dead transitions. [2023-11-26 12:00:36,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 710 flow [2023-11-26 12:00:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-26 12:00:36,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-11-26 12:00:36,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-26 12:00:36,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-26 12:00:36,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:36,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-26 12:00:36,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 12:00:36,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:36,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:36,930 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 235 flow. Second operand 5 states and 129 transitions. [2023-11-26 12:00:36,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 128 transitions, 710 flow [2023-11-26 12:00:37,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 128 transitions, 700 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:37,009 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 309 flow [2023-11-26 12:00:37,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2023-11-26 12:00:37,011 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2023-11-26 12:00:37,011 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 309 flow [2023-11-26 12:00:37,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:37,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:37,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:37,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:37,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:37,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1616001425, now seen corresponding path program 4 times [2023-11-26 12:00:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:37,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029956688] [2023-11-26 12:00:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:37,370 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 12:00:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029956688] [2023-11-26 12:00:37,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029956688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:37,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:37,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584133271] [2023-11-26 12:00:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:37,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:37,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:37,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:37,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:37,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:39,273 INFO L124 PetriNetUnfolderBase]: 7374/10352 cut-off events. [2023-11-26 12:00:39,273 INFO L125 PetriNetUnfolderBase]: For 9584/9584 co-relation queries the response was YES. [2023-11-26 12:00:39,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27372 conditions, 10352 events. 7374/10352 cut-off events. For 9584/9584 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 52271 event pairs, 3439 based on Foata normal form. 1/9088 useless extension candidates. Maximal degree in co-relation 19870. Up to 5975 conditions per place. [2023-11-26 12:00:39,535 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 114 selfloop transitions, 20 changer transitions 1/136 dead transitions. [2023-11-26 12:00:39,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 136 transitions, 807 flow [2023-11-26 12:00:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2023-11-26 12:00:39,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2023-11-26 12:00:39,538 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 139 transitions. [2023-11-26 12:00:39,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 139 transitions. [2023-11-26 12:00:39,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:39,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 139 transitions. [2023-11-26 12:00:39,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 12:00:39,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:39,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:39,542 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 309 flow. Second operand 5 states and 139 transitions. [2023-11-26 12:00:39,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 136 transitions, 807 flow [2023-11-26 12:00:39,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 136 transitions, 791 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:39,663 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 468 flow [2023-11-26 12:00:39,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2023-11-26 12:00:39,667 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2023-11-26 12:00:39,668 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 468 flow [2023-11-26 12:00:39,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:39,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:39,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:39,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:00:39,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:39,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2116669345, now seen corresponding path program 5 times [2023-11-26 12:00:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024732623] [2023-11-26 12:00:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:40,042 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 12:00:40,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:40,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024732623] [2023-11-26 12:00:40,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024732623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:40,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:40,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128443935] [2023-11-26 12:00:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:40,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:40,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:40,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:40,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:40,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:40,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:40,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:42,035 INFO L124 PetriNetUnfolderBase]: 8054/11336 cut-off events. [2023-11-26 12:00:42,035 INFO L125 PetriNetUnfolderBase]: For 17521/17521 co-relation queries the response was YES. [2023-11-26 12:00:42,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32396 conditions, 11336 events. 8054/11336 cut-off events. For 17521/17521 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 58825 event pairs, 3985 based on Foata normal form. 1/9932 useless extension candidates. Maximal degree in co-relation 23537. Up to 7735 conditions per place. [2023-11-26 12:00:42,161 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 130 selfloop transitions, 22 changer transitions 1/154 dead transitions. [2023-11-26 12:00:42,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 154 transitions, 1075 flow [2023-11-26 12:00:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2023-11-26 12:00:42,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2023-11-26 12:00:42,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 137 transitions. [2023-11-26 12:00:42,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 137 transitions. [2023-11-26 12:00:42,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:42,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 137 transitions. [2023-11-26 12:00:42,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 12:00:42,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:42,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:42,170 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 468 flow. Second operand 5 states and 137 transitions. [2023-11-26 12:00:42,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 154 transitions, 1075 flow [2023-11-26 12:00:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 154 transitions, 1011 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:42,322 INFO L231 Difference]: Finished difference. Result has 72 places, 88 transitions, 627 flow [2023-11-26 12:00:42,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=72, PETRI_TRANSITIONS=88} [2023-11-26 12:00:42,323 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-11-26 12:00:42,323 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 627 flow [2023-11-26 12:00:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:42,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:42,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:42,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash -288130251, now seen corresponding path program 6 times [2023-11-26 12:00:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836803233] [2023-11-26 12:00:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:42,628 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 12:00:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:42,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836803233] [2023-11-26 12:00:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836803233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:42,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:42,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291831457] [2023-11-26 12:00:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:42,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:42,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:42,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:42,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:42,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:42,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:44,513 INFO L124 PetriNetUnfolderBase]: 8226/11566 cut-off events. [2023-11-26 12:00:44,514 INFO L125 PetriNetUnfolderBase]: For 21444/21444 co-relation queries the response was YES. [2023-11-26 12:00:44,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34277 conditions, 11566 events. 8226/11566 cut-off events. For 21444/21444 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 59784 event pairs, 2584 based on Foata normal form. 1/10370 useless extension candidates. Maximal degree in co-relation 32943. Up to 5432 conditions per place. [2023-11-26 12:00:44,656 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 113 selfloop transitions, 45 changer transitions 1/160 dead transitions. [2023-11-26 12:00:44,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 160 transitions, 1213 flow [2023-11-26 12:00:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2023-11-26 12:00:44,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-26 12:00:44,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 136 transitions. [2023-11-26 12:00:44,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 136 transitions. [2023-11-26 12:00:44,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:44,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 136 transitions. [2023-11-26 12:00:44,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 12:00:44,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:44,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:44,662 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 627 flow. Second operand 5 states and 136 transitions. [2023-11-26 12:00:44,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 160 transitions, 1213 flow [2023-11-26 12:00:44,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 160 transitions, 1208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:44,890 INFO L231 Difference]: Finished difference. Result has 78 places, 102 transitions, 883 flow [2023-11-26 12:00:44,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2023-11-26 12:00:44,892 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2023-11-26 12:00:44,892 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 883 flow [2023-11-26 12:00:44,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:00:44,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:44,893 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 12:00:44,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:00:44,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:44,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 3162044, now seen corresponding path program 1 times [2023-11-26 12:00:44,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:44,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674682960] [2023-11-26 12:00:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674682960] [2023-11-26 12:00:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674682960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:45,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:45,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:45,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313008257] [2023-11-26 12:00:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:45,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:45,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:45,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 883 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:00:45,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:45,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:45,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:48,041 INFO L124 PetriNetUnfolderBase]: 14764/20504 cut-off events. [2023-11-26 12:00:48,041 INFO L125 PetriNetUnfolderBase]: For 53199/53199 co-relation queries the response was YES. [2023-11-26 12:00:48,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66908 conditions, 20504 events. 14764/20504 cut-off events. For 53199/53199 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 113393 event pairs, 5928 based on Foata normal form. 5/18358 useless extension candidates. Maximal degree in co-relation 64325. Up to 7755 conditions per place. [2023-11-26 12:00:48,229 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 166 selfloop transitions, 23 changer transitions 39/229 dead transitions. [2023-11-26 12:00:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 229 transitions, 2203 flow [2023-11-26 12:00:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2023-11-26 12:00:48,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2023-11-26 12:00:48,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 160 transitions. [2023-11-26 12:00:48,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 160 transitions. [2023-11-26 12:00:48,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:48,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 160 transitions. [2023-11-26 12:00:48,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:00:48,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 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) [2023-11-26 12:00:48,237 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 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) [2023-11-26 12:00:48,238 INFO L175 Difference]: Start difference. First operand has 78 places, 102 transitions, 883 flow. Second operand 6 states and 160 transitions. [2023-11-26 12:00:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 229 transitions, 2203 flow [2023-11-26 12:00:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 229 transitions, 2107 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:48,779 INFO L231 Difference]: Finished difference. Result has 86 places, 113 transitions, 1007 flow [2023-11-26 12:00:48,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1007, PETRI_PLACES=86, PETRI_TRANSITIONS=113} [2023-11-26 12:00:48,780 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2023-11-26 12:00:48,781 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 113 transitions, 1007 flow [2023-11-26 12:00:48,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:00:48,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:48,781 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 12:00:48,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:00:48,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:48,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash 106030325, now seen corresponding path program 1 times [2023-11-26 12:00:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297825697] [2023-11-26 12:00:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:49,165 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 12:00:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297825697] [2023-11-26 12:00:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297825697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:49,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:49,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595028945] [2023-11-26 12:00:49,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:49,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:49,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:49,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 113 transitions, 1007 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:00:49,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:49,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:49,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,436 INFO L124 PetriNetUnfolderBase]: 22765/31248 cut-off events. [2023-11-26 12:00:53,437 INFO L125 PetriNetUnfolderBase]: For 89084/89084 co-relation queries the response was YES. [2023-11-26 12:00:53,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106715 conditions, 31248 events. 22765/31248 cut-off events. For 89084/89084 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 177984 event pairs, 8102 based on Foata normal form. 5/27859 useless extension candidates. Maximal degree in co-relation 106608. Up to 13555 conditions per place. [2023-11-26 12:00:53,764 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 186 selfloop transitions, 24 changer transitions 10/221 dead transitions. [2023-11-26 12:00:53,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 2230 flow [2023-11-26 12:00:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2023-11-26 12:00:53,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542483660130719 [2023-11-26 12:00:53,768 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2023-11-26 12:00:53,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2023-11-26 12:00:53,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2023-11-26 12:00:53,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 12:00:53,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 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) [2023-11-26 12:00:53,771 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 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) [2023-11-26 12:00:53,772 INFO L175 Difference]: Start difference. First operand has 86 places, 113 transitions, 1007 flow. Second operand 6 states and 139 transitions. [2023-11-26 12:00:53,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 2230 flow [2023-11-26 12:00:54,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 221 transitions, 2190 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:54,647 INFO L231 Difference]: Finished difference. Result has 92 places, 126 transitions, 1190 flow [2023-11-26 12:00:54,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=92, PETRI_TRANSITIONS=126} [2023-11-26 12:00:54,648 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2023-11-26 12:00:54,648 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 126 transitions, 1190 flow [2023-11-26 12:00:54,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:00:54,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:54,649 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 12:00:54,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:00:54,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:54,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2147160632, now seen corresponding path program 1 times [2023-11-26 12:00:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373987775] [2023-11-26 12:00:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,892 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 12:00:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373987775] [2023-11-26 12:00:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373987775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:54,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:54,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:54,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336743443] [2023-11-26 12:00:54,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:54,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:54,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:54,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:54,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:54,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 126 transitions, 1190 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:00:54,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:54,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:54,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:58,583 INFO L124 PetriNetUnfolderBase]: 20829/28668 cut-off events. [2023-11-26 12:00:58,583 INFO L125 PetriNetUnfolderBase]: For 87805/87805 co-relation queries the response was YES. [2023-11-26 12:00:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99361 conditions, 28668 events. 20829/28668 cut-off events. For 87805/87805 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 159356 event pairs, 6204 based on Foata normal form. 1/25535 useless extension candidates. Maximal degree in co-relation 94979. Up to 14526 conditions per place. [2023-11-26 12:00:59,029 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 192 selfloop transitions, 23 changer transitions 18/234 dead transitions. [2023-11-26 12:00:59,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 234 transitions, 2450 flow [2023-11-26 12:00:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2023-11-26 12:00:59,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-11-26 12:00:59,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2023-11-26 12:00:59,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2023-11-26 12:00:59,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:59,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2023-11-26 12:00:59,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 12:00:59,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:59,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:00:59,035 INFO L175 Difference]: Start difference. First operand has 92 places, 126 transitions, 1190 flow. Second operand 5 states and 135 transitions. [2023-11-26 12:00:59,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 234 transitions, 2450 flow [2023-11-26 12:00:59,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 234 transitions, 2403 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:59,730 INFO L231 Difference]: Finished difference. Result has 98 places, 136 transitions, 1379 flow [2023-11-26 12:00:59,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1379, PETRI_PLACES=98, PETRI_TRANSITIONS=136} [2023-11-26 12:00:59,731 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2023-11-26 12:00:59,731 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 136 transitions, 1379 flow [2023-11-26 12:00:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:00:59,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:59,732 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 12:00:59,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:00:59,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:59,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1100579122, now seen corresponding path program 2 times [2023-11-26 12:00:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4051652] [2023-11-26 12:00:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:59,975 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 12:00:59,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4051652] [2023-11-26 12:00:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4051652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:59,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:59,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518886740] [2023-11-26 12:00:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:59,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:59,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:00:59,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 136 transitions, 1379 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:00:59,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:59,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:00:59,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:04,293 INFO L124 PetriNetUnfolderBase]: 20535/28245 cut-off events. [2023-11-26 12:01:04,293 INFO L125 PetriNetUnfolderBase]: For 118662/118662 co-relation queries the response was YES. [2023-11-26 12:01:04,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99477 conditions, 28245 events. 20535/28245 cut-off events. For 118662/118662 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 157009 event pairs, 11182 based on Foata normal form. 1/25630 useless extension candidates. Maximal degree in co-relation 94760. Up to 19786 conditions per place. [2023-11-26 12:01:04,530 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 154 selfloop transitions, 20 changer transitions 19/194 dead transitions. [2023-11-26 12:01:04,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 194 transitions, 1957 flow [2023-11-26 12:01:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:01:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2023-11-26 12:01:04,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-11-26 12:01:04,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 130 transitions. [2023-11-26 12:01:04,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 130 transitions. [2023-11-26 12:01:04,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:04,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 130 transitions. [2023-11-26 12:01:04,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 12:01:04,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:01:04,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:01:04,534 INFO L175 Difference]: Start difference. First operand has 98 places, 136 transitions, 1379 flow. Second operand 5 states and 130 transitions. [2023-11-26 12:01:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 194 transitions, 1957 flow [2023-11-26 12:01:05,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 194 transitions, 1920 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:05,343 INFO L231 Difference]: Finished difference. Result has 102 places, 133 transitions, 1341 flow [2023-11-26 12:01:05,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1341, PETRI_PLACES=102, PETRI_TRANSITIONS=133} [2023-11-26 12:01:05,344 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2023-11-26 12:01:05,344 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 133 transitions, 1341 flow [2023-11-26 12:01:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:01:05,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:05,345 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 12:01:05,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:01:05,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:01:05,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 708407042, now seen corresponding path program 3 times [2023-11-26 12:01:05,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:05,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738751532] [2023-11-26 12:01:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:05,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:05,558 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 12:01:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738751532] [2023-11-26 12:01:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738751532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:05,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:05,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:01:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488543992] [2023-11-26 12:01:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:05,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:05,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:05,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:05,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:01:05,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 133 transitions, 1341 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:01:05,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:05,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:01:05,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:09,566 INFO L124 PetriNetUnfolderBase]: 20621/28352 cut-off events. [2023-11-26 12:01:09,567 INFO L125 PetriNetUnfolderBase]: For 119437/119437 co-relation queries the response was YES. [2023-11-26 12:01:09,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100229 conditions, 28352 events. 20621/28352 cut-off events. For 119437/119437 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 157395 event pairs, 10800 based on Foata normal form. 1/25715 useless extension candidates. Maximal degree in co-relation 100140. Up to 19786 conditions per place. [2023-11-26 12:01:09,862 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 170 selfloop transitions, 26 changer transitions 14/211 dead transitions. [2023-11-26 12:01:09,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 211 transitions, 2140 flow [2023-11-26 12:01:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:01:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2023-11-26 12:01:09,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2023-11-26 12:01:09,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 139 transitions. [2023-11-26 12:01:09,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 139 transitions. [2023-11-26 12:01:09,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:09,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 139 transitions. [2023-11-26 12:01:09,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 12:01:09,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:01:09,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 12:01:09,873 INFO L175 Difference]: Start difference. First operand has 102 places, 133 transitions, 1341 flow. Second operand 5 states and 139 transitions. [2023-11-26 12:01:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 211 transitions, 2140 flow [2023-11-26 12:01:10,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 211 transitions, 2090 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 12:01:10,929 INFO L231 Difference]: Finished difference. Result has 102 places, 135 transitions, 1353 flow [2023-11-26 12:01:10,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1353, PETRI_PLACES=102, PETRI_TRANSITIONS=135} [2023-11-26 12:01:10,930 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2023-11-26 12:01:10,930 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 135 transitions, 1353 flow [2023-11-26 12:01:10,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:01:10,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:10,931 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 12:01:10,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:01:10,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:01:10,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash 742847906, now seen corresponding path program 4 times [2023-11-26 12:01:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:10,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27865137] [2023-11-26 12:01:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:11,159 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 12:01:11,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27865137] [2023-11-26 12:01:11,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27865137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:11,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:11,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:01:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381186081] [2023-11-26 12:01:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:11,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2023-11-26 12:01:11,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 135 transitions, 1353 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 12:01:11,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:11,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2023-11-26 12:01:11,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand