./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/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_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/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_92256d3d-7f7a-4938-bcae-9a5da86a2471/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 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:31,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:31,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:46:31,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:31,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:31,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:31,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:31,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:31,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:46:31,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:46:31,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:31,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:31,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:31,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:31,400 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:31,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:31,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:46:31,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:31,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:46:31,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:31,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:31,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:46:31,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:31,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:46:31,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:31,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:46:31,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:31,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:31,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:31,421 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:46:31,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:31,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:31,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:31,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:31,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:46:31,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:46:31,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:46:31,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:31,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:31,425 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:46:31,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:31,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:31,426 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_92256d3d-7f7a-4938-bcae-9a5da86a2471/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462fb42b593b74362524fb8209dde3f76380a79de0c48b612eb75bd0eda8df1c [2023-11-26 11:46:31,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:31,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:31,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:31,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:31,740 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:31,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-26 11:46:34,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:35,249 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:35,251 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-11-26 11:46:35,266 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/data/e59889e95/2ab1dfeb05424ca8b47e60ece07df121/FLAG22b90f8be [2023-11-26 11:46:35,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/data/e59889e95/2ab1dfeb05424ca8b47e60ece07df121 [2023-11-26 11:46:35,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:35,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:35,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:35,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:35,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:35,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70857e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35, skipping insertion in model container [2023-11-26 11:46:35,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:35,623 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_92256d3d-7f7a-4938-bcae-9a5da86a2471/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-26 11:46:35,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:35,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:35,685 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_92256d3d-7f7a-4938-bcae-9a5da86a2471/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4450,4463] [2023-11-26 11:46:35,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:35,699 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:46:35,700 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:46:35,708 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:35,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35 WrapperNode [2023-11-26 11:46:35,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:35,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:35,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:35,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:35,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,769 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 307 [2023-11-26 11:46:35,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:35,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:35,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:35,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:35,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,823 INFO L175 MemorySlicer]: Split 19 memory accesses to 8 slices as follows [2, 5, 2, 2, 2, 2, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1]. [2023-11-26 11:46:35,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:35,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:35,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:35,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:35,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (1/1) ... [2023-11-26 11:46:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:35,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:35,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:35,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92256d3d-7f7a-4938-bcae-9a5da86a2471/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:46:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:46:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:46:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:46:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:46:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:46:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:46:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:46:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:46:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:46:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:46:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:46:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:46:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:46:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:46:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:46:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:46:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:46:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:46:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:46:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:46:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:46:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:46:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 11:46:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 11:46:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:46:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:46:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:46:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:46:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:46:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:46:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:46:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:46:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-26 11:46:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-26 11:46:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-26 11:46:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-26 11:46:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:46:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:46:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:46:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:46:35,958 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 11:46:36,132 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:36,135 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:36,798 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:37,248 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:37,248 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-26 11:46:37,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:37 BoogieIcfgContainer [2023-11-26 11:46:37,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:37,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:37,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:37,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:37,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:35" (1/3) ... [2023-11-26 11:46:37,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46748990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:37, skipping insertion in model container [2023-11-26 11:46:37,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:35" (2/3) ... [2023-11-26 11:46:37,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46748990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:37, skipping insertion in model container [2023-11-26 11:46:37,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:37" (3/3) ... [2023-11-26 11:46:37,258 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-11-26 11:46:37,267 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:46:37,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:37,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:46:37,277 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:46:37,415 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-26 11:46:37,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 244 flow [2023-11-26 11:46:37,546 INFO L124 PetriNetUnfolderBase]: 13/75 cut-off events. [2023-11-26 11:46:37,546 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:46:37,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 75 events. 13/75 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-11-26 11:46:37,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 244 flow [2023-11-26 11:46:37,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 196 flow [2023-11-26 11:46:37,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:37,591 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;@332de207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:37,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-26 11:46:37,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:46:37,639 INFO L124 PetriNetUnfolderBase]: 13/73 cut-off events. [2023-11-26 11:46:37,639 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:46:37,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:37,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:37,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-26 11:46:37,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -620164665, now seen corresponding path program 1 times [2023-11-26 11:46:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049178076] [2023-11-26 11:46:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:37,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:38,075 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 11:46:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049178076] [2023-11-26 11:46:38,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049178076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:38,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:38,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768050720] [2023-11-26 11:46:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:38,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:38,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:38,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-26 11:46:38,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 196 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 11:46:38,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:38,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-26 11:46:38,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:00,069 INFO L124 PetriNetUnfolderBase]: 165722/207931 cut-off events. [2023-11-26 11:47:00,078 INFO L125 PetriNetUnfolderBase]: For 14694/14694 co-relation queries the response was YES. [2023-11-26 11:47:00,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426136 conditions, 207931 events. 165722/207931 cut-off events. For 14694/14694 co-relation queries the response was YES. Maximal size of possible extension queue 7880. Compared 1209735 event pairs, 127661 based on Foata normal form. 33320/202150 useless extension candidates. Maximal degree in co-relation 424000. Up to 200859 conditions per place. [2023-11-26 11:47:01,505 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 61 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-11-26 11:47:01,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 310 flow [2023-11-26 11:47:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:47:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:47:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 95 transitions. [2023-11-26 11:47:01,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2023-11-26 11:47:01,520 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 95 transitions. [2023-11-26 11:47:01,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 95 transitions. [2023-11-26 11:47:01,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:01,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 95 transitions. [2023-11-26 11:47:01,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:47:01,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 11:47:01,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 11:47:01,534 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 196 flow. Second operand 2 states and 95 transitions. [2023-11-26 11:47:01,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 70 transitions, 310 flow [2023-11-26 11:47:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-26 11:47:02,107 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 156 flow [2023-11-26 11:47:02,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-11-26 11:47:02,114 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -11 predicate places. [2023-11-26 11:47:02,114 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 156 flow [2023-11-26 11:47:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 11:47:02,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:02,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:02,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-26 11:47:02,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 704973535, now seen corresponding path program 1 times [2023-11-26 11:47:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412716952] [2023-11-26 11:47:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:02,549 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 11:47:02,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:02,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412716952] [2023-11-26 11:47:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412716952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:02,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:47:02,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459906732] [2023-11-26 11:47:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:02,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:02,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-26 11:47:02,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 11:47:02,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:02,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-26 11:47:02,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand