./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:59:51,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:59:51,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:59:51,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:59:51,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:59:51,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:59:51,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:59:51,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:59:51,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:59:51,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:59:51,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:59:51,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:59:51,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:59:51,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:59:51,247 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:59:51,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:59:51,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:59:51,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:59:51,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:59:51,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:59:51,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:59:51,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:59:51,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:59:51,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:59:51,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:59:51,254 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:59:51,254 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:59:51,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:59:51,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:59:51,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:59:51,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:59:51,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:59:51,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:59:51,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:59:51,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:59:51,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:59:51,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:59:51,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:59:51,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:59:51,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:59:51,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:59:51,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:59:51,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:59:51,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:59:51,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f [2024-11-19 13:59:51,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:59:51,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:59:51,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:59:51,559 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:59:51,560 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:59:51,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-11-19 13:59:52,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:59:53,256 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:59:53,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-11-19 13:59:53,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9aef14a3/debb8e837dca443dabe3cba9643f40f4/FLAG9eeb486bf [2024-11-19 13:59:53,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9aef14a3/debb8e837dca443dabe3cba9643f40f4 [2024-11-19 13:59:53,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:59:53,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:59:53,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:59:53,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:59:53,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:59:53,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:53" (1/1) ... [2024-11-19 13:59:53,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27171c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:53, skipping insertion in model container [2024-11-19 13:59:53,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:53" (1/1) ... [2024-11-19 13:59:53,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:59:53,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:59:53,863 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:59:53,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:59:54,046 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:59:54,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54 WrapperNode [2024-11-19 13:59:54,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:59:54,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:59:54,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:59:54,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:59:54,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,114 INFO L138 Inliner]: procedures = 252, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2024-11-19 13:59:54,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:59:54,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:59:54,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:59:54,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:59:54,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,139 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,168 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-19 13:59:54,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:59:54,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:59:54,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:59:54,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:59:54,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (1/1) ... [2024-11-19 13:59:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:59:54,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:59:54,247 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) [2024-11-19 13:59:54,250 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 [2024-11-19 13:59:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 13:59:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 13:59:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:59:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:59:54,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:59:54,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:59:54,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 13:59:54,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 13:59:54,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:59:54,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:59:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:59:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 13:59:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 13:59:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:59:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:59:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 13:59:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 13:59:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:59:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:59:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:59:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 13:59:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 13:59:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:59:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:59:54,313 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:59:54,464 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:59:54,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:59:54,748 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:59:54,748 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:59:54,922 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:59:54,923 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-19 13:59:54,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:54 BoogieIcfgContainer [2024-11-19 13:59:54,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:59:54,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:59:54,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:59:54,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:59:54,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:59:53" (1/3) ... [2024-11-19 13:59:54,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598cf98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:54, skipping insertion in model container [2024-11-19 13:59:54,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:54" (2/3) ... [2024-11-19 13:59:54,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598cf98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:54, skipping insertion in model container [2024-11-19 13:59:54,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:54" (3/3) ... [2024-11-19 13:59:54,933 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-11-19 13:59:54,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:59:54,953 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:59:54,953 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:59:55,002 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 13:59:55,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 68 transitions, 143 flow [2024-11-19 13:59:55,086 INFO L124 PetriNetUnfolderBase]: 11/87 cut-off events. [2024-11-19 13:59:55,086 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:59:55,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 11/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2024-11-19 13:59:55,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 68 transitions, 143 flow [2024-11-19 13:59:55,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 141 flow [2024-11-19 13:59:55,128 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:59:55,136 INFO L333 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, 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;@77840804, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:59:55,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-19 13:59:55,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:59:55,157 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-19 13:59:55,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:59:55,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:59:55,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:59:55,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-19 13:59:55,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:59:55,165 INFO L85 PathProgramCache]: Analyzing trace with hash 381256097, now seen corresponding path program 1 times [2024-11-19 13:59:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:59:55,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898670266] [2024-11-19 13:59:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:59:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:59:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:59:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:59:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898670266] [2024-11-19 13:59:55,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898670266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:59:55,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:59:55,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:59:55,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42255426] [2024-11-19 13:59:55,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:59:55,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:59:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:59:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:59:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:59:55,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-19 13:59:55,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-19 13:59:55,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:59:55,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-19 13:59:55,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:59:55,965 INFO L124 PetriNetUnfolderBase]: 240/694 cut-off events. [2024-11-19 13:59:55,965 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:59:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 694 events. 240/694 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3478 event pairs, 78 based on Foata normal form. 98/738 useless extension candidates. Maximal degree in co-relation 1185. Up to 464 conditions per place. [2024-11-19 13:59:55,978 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 64 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-19 13:59:55,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 321 flow [2024-11-19 13:59:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:59:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:59:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-19 13:59:55,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2024-11-19 13:59:55,995 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 141 flow. Second operand 4 states and 182 transitions. [2024-11-19 13:59:55,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 321 flow [2024-11-19 13:59:56,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:59:56,003 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 131 flow [2024-11-19 13:59:56,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-19 13:59:56,013 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-11-19 13:59:56,015 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 131 flow [2024-11-19 13:59:56,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-19 13:59:56,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:59:56,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:59:56,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:59:56,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-19 13:59:56,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:59:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2107243170, now seen corresponding path program 1 times [2024-11-19 13:59:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:59:56,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728457235] [2024-11-19 13:59:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:59:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:59:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:59:56,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:59:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:59:56,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:59:56,112 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:59:56,114 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-19 13:59:56,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-19 13:59:56,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-19 13:59:56,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-19 13:59:56,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-19 13:59:56,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-19 13:59:56,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-19 13:59:56,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-19 13:59:56,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-19 13:59:56,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-19 13:59:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-19 13:59:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-19 13:59:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-19 13:59:56,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:59:56,120 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 13:59:56,123 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:59:56,124 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 13:59:56,156 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:59:56,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 105 transitions, 226 flow [2024-11-19 13:59:56,182 INFO L124 PetriNetUnfolderBase]: 21/162 cut-off events. [2024-11-19 13:59:56,183 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 13:59:56,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 162 events. 21/162 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 582 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-11-19 13:59:56,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 105 transitions, 226 flow [2024-11-19 13:59:56,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 105 transitions, 226 flow [2024-11-19 13:59:56,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:59:56,194 INFO L333 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, 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;@77840804, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:59:56,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-19 13:59:56,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:59:56,197 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-19 13:59:56,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:59:56,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:59:56,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:59:56,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:59:56,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:59:56,198 INFO L85 PathProgramCache]: Analyzing trace with hash 481491757, now seen corresponding path program 1 times [2024-11-19 13:59:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:59:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284837135] [2024-11-19 13:59:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:59:56,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:59:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:59:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:59:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284837135] [2024-11-19 13:59:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284837135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:59:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:59:56,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:59:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620743994] [2024-11-19 13:59:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:59:56,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:59:56,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:59:56,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:59:56,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:59:56,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-11-19 13:59:56,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-19 13:59:56,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:59:56,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-11-19 13:59:56,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:59:58,482 INFO L124 PetriNetUnfolderBase]: 9858/19622 cut-off events. [2024-11-19 13:59:58,484 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-19 13:59:58,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35138 conditions, 19622 events. 9858/19622 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 166112 event pairs, 4688 based on Foata normal form. 2820/20821 useless extension candidates. Maximal degree in co-relation 2012. Up to 15372 conditions per place. [2024-11-19 13:59:58,645 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 87 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-11-19 13:59:58,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 448 flow [2024-11-19 13:59:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:59:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:59:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-11-19 13:59:58,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-11-19 13:59:58,649 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 226 flow. Second operand 4 states and 263 transitions. [2024-11-19 13:59:58,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 448 flow [2024-11-19 13:59:58,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:59:58,653 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 222 flow [2024-11-19 13:59:58,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-19 13:59:58,655 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-11-19 13:59:58,655 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 222 flow [2024-11-19 13:59:58,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-19 13:59:58,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:59:58,656 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:59:58,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:59:58,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:59:58,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:59:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1141889960, now seen corresponding path program 1 times [2024-11-19 13:59:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:59:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861149080] [2024-11-19 13:59:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:59:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:59:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:59:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:58,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:59:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861149080] [2024-11-19 13:59:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861149080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:59:58,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41408296] [2024-11-19 13:59:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:59:58,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:59:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:59:58,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:59:58,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:59:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:59:58,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:59:58,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:59:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:58,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:59:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41408296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:59:58,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:59:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:59:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120785437] [2024-11-19 13:59:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:59:58,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:59:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:59:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:59:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:59:58,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-11-19 13:59:58,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2024-11-19 13:59:58,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:59:58,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-11-19 13:59:58,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:00,882 INFO L124 PetriNetUnfolderBase]: 9314/17191 cut-off events. [2024-11-19 14:00:00,883 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-11-19 14:00:00,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33119 conditions, 17191 events. 9314/17191 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 137082 event pairs, 527 based on Foata normal form. 289/16592 useless extension candidates. Maximal degree in co-relation 1951. Up to 10580 conditions per place. [2024-11-19 14:00:00,966 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 147 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2024-11-19 14:00:00,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 189 transitions, 718 flow [2024-11-19 14:00:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:00:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:00:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-11-19 14:00:00,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-11-19 14:00:00,973 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 222 flow. Second operand 6 states and 370 transitions. [2024-11-19 14:00:00,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 189 transitions, 718 flow [2024-11-19 14:00:00,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 189 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:00:00,980 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 228 flow [2024-11-19 14:00:00,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-11-19 14:00:00,983 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-11-19 14:00:00,983 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 228 flow [2024-11-19 14:00:00,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2024-11-19 14:00:00,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:00,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 14:00:01,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:00:01,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:01,189 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 14:00:01,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1038849897, now seen corresponding path program 1 times [2024-11-19 14:00:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916042332] [2024-11-19 14:00:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:00:01,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:01,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916042332] [2024-11-19 14:00:01,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916042332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:01,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:01,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:00:01,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214335135] [2024-11-19 14:00:01,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:01,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:01,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-11-19 14:00:01,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:00:01,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:01,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-11-19 14:00:01,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:02,826 INFO L124 PetriNetUnfolderBase]: 8770/16023 cut-off events. [2024-11-19 14:00:02,826 INFO L125 PetriNetUnfolderBase]: For 2252/2252 co-relation queries the response was YES. [2024-11-19 14:00:02,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31731 conditions, 16023 events. 8770/16023 cut-off events. For 2252/2252 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 124828 event pairs, 832 based on Foata normal form. 289/15846 useless extension candidates. Maximal degree in co-relation 21273. Up to 11446 conditions per place. [2024-11-19 14:00:02,913 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 114 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-11-19 14:00:02,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 156 transitions, 594 flow [2024-11-19 14:00:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-11-19 14:00:02,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-11-19 14:00:02,915 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 228 flow. Second operand 4 states and 263 transitions. [2024-11-19 14:00:02,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 156 transitions, 594 flow [2024-11-19 14:00:02,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 156 transitions, 578 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-19 14:00:02,945 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 228 flow [2024-11-19 14:00:02,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-11-19 14:00:02,947 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2024-11-19 14:00:02,948 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 228 flow [2024-11-19 14:00:02,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:00:02,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:02,948 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 14:00:02,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:00:02,949 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 14:00:02,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1902321673, now seen corresponding path program 1 times [2024-11-19 14:00:02,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:02,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150398191] [2024-11-19 14:00:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:02,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:02,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:00:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:03,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:00:03,001 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:00:03,002 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-19 14:00:03,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-19 14:00:03,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-19 14:00:03,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-19 14:00:03,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-19 14:00:03,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-19 14:00:03,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-19 14:00:03,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-19 14:00:03,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-19 14:00:03,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-19 14:00:03,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-19 14:00:03,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:00:03,005 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 14:00:03,005 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:00:03,005 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 14:00:03,053 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:00:03,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 142 transitions, 311 flow [2024-11-19 14:00:03,202 INFO L124 PetriNetUnfolderBase]: 34/256 cut-off events. [2024-11-19 14:00:03,203 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 14:00:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 34/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1064 event pairs, 1 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 177. Up to 12 conditions per place. [2024-11-19 14:00:03,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 142 transitions, 311 flow [2024-11-19 14:00:03,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 142 transitions, 311 flow [2024-11-19 14:00:03,209 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:00:03,210 INFO L333 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, 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;@77840804, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:00:03,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-19 14:00:03,212 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:00:03,213 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 14:00:03,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:00:03,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:03,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:00:03,213 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:00:03,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash 617036702, now seen corresponding path program 1 times [2024-11-19 14:00:03,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:03,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258657022] [2024-11-19 14:00:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:03,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:03,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258657022] [2024-11-19 14:00:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258657022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:03,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191196551] [2024-11-19 14:00:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:03,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:03,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-11-19 14:00:03,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 142 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-19 14:00:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-11-19 14:00:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:36,505 INFO L124 PetriNetUnfolderBase]: 260231/450076 cut-off events. [2024-11-19 14:00:36,505 INFO L125 PetriNetUnfolderBase]: For 3306/3306 co-relation queries the response was YES. [2024-11-19 14:00:37,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809161 conditions, 450076 events. 260231/450076 cut-off events. For 3306/3306 co-relation queries the response was YES. Maximal size of possible extension queue 7431. Compared 4873139 event pairs, 170145 based on Foata normal form. 69821/485516 useless extension candidates. Maximal degree in co-relation 36511. Up to 356848 conditions per place. [2024-11-19 14:00:39,735 INFO L140 encePairwiseOnDemand]: 116/142 looper letters, 105 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2024-11-19 14:00:39,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 157 transitions, 557 flow [2024-11-19 14:00:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2024-11-19 14:00:39,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596830985915493 [2024-11-19 14:00:39,738 INFO L175 Difference]: Start difference. First operand has 126 places, 142 transitions, 311 flow. Second operand 4 states and 339 transitions. [2024-11-19 14:00:39,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 157 transitions, 557 flow [2024-11-19 14:00:39,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 157 transitions, 557 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:00:39,748 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 295 flow [2024-11-19 14:00:39,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-11-19 14:00:39,749 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2024-11-19 14:00:39,749 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 295 flow [2024-11-19 14:00:39,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-19 14:00:39,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:39,750 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:39,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:00:39,750 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:00:39,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1620327688, now seen corresponding path program 1 times [2024-11-19 14:00:39,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:39,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856624102] [2024-11-19 14:00:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:39,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:39,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856624102] [2024-11-19 14:00:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856624102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:39,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750057548] [2024-11-19 14:00:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:39,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:39,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:39,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:39,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:00:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:39,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:00:39,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:39,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:00:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750057548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:39,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:00:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:00:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065074004] [2024-11-19 14:00:39,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:39,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:00:39,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:00:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:00:39,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-11-19 14:00:39,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:39,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:39,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-11-19 14:00:39,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand