./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:07:10,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:07:10,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:07:10,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:07:10,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:07:10,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:07:10,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:07:10,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:07:10,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:07:10,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:07:10,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:07:10,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:07:10,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:07:10,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:07:10,435 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:07:10,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:07:10,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:07:10,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:07:10,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:07:10,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:07:10,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:07:10,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:07:10,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:07:10,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:07:10,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:07:10,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:07:10,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:07:10,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:07:10,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:07:10,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:07:10,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:07:10,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:07:10,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:07:10,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:07:10,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:07:10,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:07:10,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:07:10,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:07:10,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:07:10,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:07:10,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:07:10,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:07:10,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:07:10,442 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2024-01-27 15:07:10,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:07:10,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:07:10,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:07:10,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:07:10,686 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:07:10,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2024-01-27 15:07:11,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:07:12,029 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:07:12,038 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2024-01-27 15:07:12,050 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b14da8f6/282ca949ff69478893b56f02a774dc28/FLAG85eaf1bda [2024-01-27 15:07:12,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b14da8f6/282ca949ff69478893b56f02a774dc28 [2024-01-27 15:07:12,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:07:12,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:07:12,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:07:12,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:07:12,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:07:12,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69664519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12, skipping insertion in model container [2024-01-27 15:07:12,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,107 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:07:12,354 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30369,30382] [2024-01-27 15:07:12,368 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30869,30882] [2024-01-27 15:07:12,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:07:12,387 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:07:12,426 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30369,30382] [2024-01-27 15:07:12,435 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30869,30882] [2024-01-27 15:07:12,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:07:12,470 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:07:12,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12 WrapperNode [2024-01-27 15:07:12,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:07:12,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:07:12,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:07:12,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:07:12,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,520 INFO L138 Inliner]: procedures = 174, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 162 [2024-01-27 15:07:12,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:07:12,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:07:12,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:07:12,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:07:12,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,555 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 6, 1, 6, 9]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 0, 0, 2, 1]. The 9 writes are split as follows [0, 4, 1, 2, 2]. [2024-01-27 15:07:12,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:07:12,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:07:12,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:07:12,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:07:12,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (1/1) ... [2024-01-27 15:07:12,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:07:12,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:07:12,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:07:12,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:07:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:07:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:07:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:07:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:07:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:07:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-27 15:07:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-27 15:07:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:07:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:07:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:07:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:07:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:07:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:07:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:07:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:07:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:07:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:07:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:07:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:07:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:07:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:07:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:07:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:07:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:07:12,663 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:07:12,803 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:07:12,806 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:07:13,032 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:07:13,033 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:07:13,216 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:07:13,217 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 15:07:13,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:07:13 BoogieIcfgContainer [2024-01-27 15:07:13,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:07:13,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:07:13,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:07:13,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:07:13,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:07:12" (1/3) ... [2024-01-27 15:07:13,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7566d8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:07:13, skipping insertion in model container [2024-01-27 15:07:13,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:07:12" (2/3) ... [2024-01-27 15:07:13,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7566d8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:07:13, skipping insertion in model container [2024-01-27 15:07:13,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:07:13" (3/3) ... [2024-01-27 15:07:13,223 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2024-01-27 15:07:13,228 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:07:13,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:07:13,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 15:07:13,235 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:07:13,306 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:07:13,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 34 transitions, 72 flow [2024-01-27 15:07:13,365 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-01-27 15:07:13,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:07:13,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 91 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-01-27 15:07:13,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 34 transitions, 72 flow [2024-01-27 15:07:13,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 34 transitions, 72 flow [2024-01-27 15:07:13,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:07:13,378 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;@156e05ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:07:13,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:07:13,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:07:13,382 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-01-27 15:07:13,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:07:13,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:07:13,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-27 15:07:13,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:07:13,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:07:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 383278609, now seen corresponding path program 1 times [2024-01-27 15:07:13,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:07:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822348151] [2024-01-27 15:07:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:07:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:07:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:07:13,478 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 15:07:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:07:13,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 15:07:13,548 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 15:07:13,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-01-27 15:07:13,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-27 15:07:13,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-01-27 15:07:13,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-01-27 15:07:13,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-27 15:07:13,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:07:13,590 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-27 15:07:13,595 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 15:07:13,595 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-27 15:07:13,677 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:07:13,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 63 transitions, 136 flow [2024-01-27 15:07:13,717 INFO L124 PetriNetUnfolderBase]: 14/68 cut-off events. [2024-01-27 15:07:13,717 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:07:13,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 14/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2024-01-27 15:07:13,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 63 transitions, 136 flow [2024-01-27 15:07:13,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 63 transitions, 136 flow [2024-01-27 15:07:13,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:07:13,722 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;@156e05ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:07:13,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 15:07:13,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:07:13,728 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-01-27 15:07:13,729 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:07:13,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:07:13,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:07:13,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:07:13,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:07:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash 965895634, now seen corresponding path program 1 times [2024-01-27 15:07:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:07:13,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722502481] [2024-01-27 15:07:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:07:13,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:07:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:07:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:07:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:07:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722502481] [2024-01-27 15:07:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722502481] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:07:13,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:07:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:07:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031101702] [2024-01-27 15:07:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:07:13,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:07:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:07:13,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:07:13,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:07:13,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 63 [2024-01-27 15:07:13,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2024-01-27 15:07:13,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:07:13,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 63 [2024-01-27 15:07:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:07:14,293 INFO L124 PetriNetUnfolderBase]: 2553/3945 cut-off events. [2024-01-27 15:07:14,294 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-01-27 15:07:14,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 3945 events. 2553/3945 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20133 event pairs, 1938 based on Foata normal form. 0/3048 useless extension candidates. Maximal degree in co-relation 3620. Up to 3816 conditions per place. [2024-01-27 15:07:14,314 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 53 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2024-01-27 15:07:14,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 232 flow [2024-01-27 15:07:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:07:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:07:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-01-27 15:07:14,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-27 15:07:14,325 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 136 flow. Second operand 2 states and 68 transitions. [2024-01-27 15:07:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 232 flow [2024-01-27 15:07:14,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:07:14,331 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 126 flow [2024-01-27 15:07:14,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2024-01-27 15:07:14,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-01-27 15:07:14,335 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 126 flow [2024-01-27 15:07:14,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2024-01-27 15:07:14,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:07:14,336 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-27 15:07:14,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:07:14,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:07:14,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:07:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -819103125, now seen corresponding path program 1 times [2024-01-27 15:07:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:07:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135827661] [2024-01-27 15:07:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:07:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:07:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:07:14,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 15:07:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:07:14,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 15:07:14,360 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 15:07:14,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-01-27 15:07:14,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-01-27 15:07:14,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-01-27 15:07:14,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-01-27 15:07:14,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-01-27 15:07:14,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-01-27 15:07:14,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-27 15:07:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:07:14,362 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-27 15:07:14,363 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 15:07:14,363 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-27 15:07:14,412 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:07:14,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 92 transitions, 202 flow [2024-01-27 15:07:14,421 INFO L124 PetriNetUnfolderBase]: 21/100 cut-off events. [2024-01-27 15:07:14,421 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-27 15:07:14,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 21/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 371 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2024-01-27 15:07:14,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 92 transitions, 202 flow [2024-01-27 15:07:14,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 92 transitions, 202 flow [2024-01-27 15:07:14,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:07:14,424 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;@156e05ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:07:14,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-01-27 15:07:14,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:07:14,426 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-01-27 15:07:14,426 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:07:14,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:07:14,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:07:14,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-27 15:07:14,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:07:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash -535575094, now seen corresponding path program 1 times [2024-01-27 15:07:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:07:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446471210] [2024-01-27 15:07:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:07:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:07:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:07:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:07:14,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:07:14,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446471210] [2024-01-27 15:07:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446471210] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:07:14,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:07:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:07:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741066844] [2024-01-27 15:07:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:07:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:07:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:07:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:07:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:07:14,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 92 [2024-01-27 15:07:14,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 92 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-01-27 15:07:14,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:07:14,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 92 [2024-01-27 15:07:14,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:07:21,582 INFO L124 PetriNetUnfolderBase]: 81353/109105 cut-off events. [2024-01-27 15:07:21,583 INFO L125 PetriNetUnfolderBase]: For 2624/2624 co-relation queries the response was YES. [2024-01-27 15:07:21,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217387 conditions, 109105 events. 81353/109105 cut-off events. For 2624/2624 co-relation queries the response was YES. Maximal size of possible extension queue 3022. Compared 666780 event pairs, 62738 based on Foata normal form. 0/82232 useless extension candidates. Maximal degree in co-relation 14436. Up to 106616 conditions per place. [2024-01-27 15:07:22,098 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 78 selfloop transitions, 0 changer transitions 0/85 dead transitions. [2024-01-27 15:07:22,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 344 flow [2024-01-27 15:07:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:07:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:07:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2024-01-27 15:07:22,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-01-27 15:07:22,103 INFO L175 Difference]: Start difference. First operand has 78 places, 92 transitions, 202 flow. Second operand 2 states and 99 transitions. [2024-01-27 15:07:22,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 344 flow [2024-01-27 15:07:22,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 342 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 15:07:22,110 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 186 flow [2024-01-27 15:07:22,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=186, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-01-27 15:07:22,111 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2024-01-27 15:07:22,111 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 186 flow [2024-01-27 15:07:22,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-01-27 15:07:22,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:07:22,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:07:22,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:07:22,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-27 15:07:22,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:07:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2068044001, now seen corresponding path program 1 times [2024-01-27 15:07:22,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:07:22,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440359161] [2024-01-27 15:07:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:07:22,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:07:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:07:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:07:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:07:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440359161] [2024-01-27 15:07:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440359161] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:07:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:07:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:07:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125270924] [2024-01-27 15:07:22,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:07:22,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:07:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:07:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:07:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:07:22,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 92 [2024-01-27 15:07:22,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-01-27 15:07:22,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:07:22,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 92 [2024-01-27 15:07:22,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:07:30,194 INFO L124 PetriNetUnfolderBase]: 103794/141004 cut-off events. [2024-01-27 15:07:30,195 INFO L125 PetriNetUnfolderBase]: For 1791/1791 co-relation queries the response was YES. [2024-01-27 15:07:30,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279230 conditions, 141004 events. 103794/141004 cut-off events. For 1791/1791 co-relation queries the response was YES. Maximal size of possible extension queue 4170. Compared 922660 event pairs, 23278 based on Foata normal form. 0/109801 useless extension candidates. Maximal degree in co-relation 279224. Up to 108783 conditions per place. [2024-01-27 15:07:30,872 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 194 selfloop transitions, 13 changer transitions 0/214 dead transitions. [2024-01-27 15:07:30,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 214 transitions, 883 flow [2024-01-27 15:07:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:07:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:07:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-01-27 15:07:30,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304347826086957 [2024-01-27 15:07:30,881 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 186 flow. Second operand 5 states and 244 transitions. [2024-01-27 15:07:30,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 214 transitions, 883 flow [2024-01-27 15:07:30,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 214 transitions, 883 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:07:30,889 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 281 flow [2024-01-27 15:07:30,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-01-27 15:07:30,891 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-01-27 15:07:30,891 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 281 flow [2024-01-27 15:07:30,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-01-27 15:07:30,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:07:30,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:07:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:07:30,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-27 15:07:30,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:07:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1119496573, now seen corresponding path program 1 times [2024-01-27 15:07:30,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:07:30,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750341949] [2024-01-27 15:07:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:07:30,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:07:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:07:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:07:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:07:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750341949] [2024-01-27 15:07:31,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750341949] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:07:31,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:07:31,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:07:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525554178] [2024-01-27 15:07:31,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:07:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:07:31,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:07:31,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:07:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:07:31,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 92 [2024-01-27 15:07:31,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-01-27 15:07:31,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:07:31,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 92 [2024-01-27 15:07:31,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand