./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:55:49,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:55:49,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:55:49,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:55:49,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:55:50,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:55:50,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:55:50,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:55:50,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:55:50,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:55:50,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:55:50,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:55:50,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:55:50,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:55:50,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:55:50,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:55:50,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:55:50,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:55:50,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:55:50,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:55:50,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:55:50,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:55:50,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:55:50,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:55:50,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:55:50,032 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:55:50,032 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:55:50,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:55:50,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:55:50,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:55:50,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:55:50,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:55:50,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:55:50,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:55:50,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:55:50,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:55:50,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:55:50,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:55:50,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:55:50,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:55:50,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:55:50,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:55:50,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:55:50,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:55:50,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-11-23 01:55:50,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:55:50,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:55:50,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:55:50,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:55:50,279 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:55:50,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-23 01:55:51,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:55:51,814 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:55:51,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-23 01:55:51,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa118c680/9fe8f6851a004b27af650cebcd99fe77/FLAG51fdc4684 [2024-11-23 01:55:51,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa118c680/9fe8f6851a004b27af650cebcd99fe77 [2024-11-23 01:55:51,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:55:51,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:55:51,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:55:51,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:55:51,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:55:51,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:51" (1/1) ... [2024-11-23 01:55:51,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16adccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:51, skipping insertion in model container [2024-11-23 01:55:51,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:51" (1/1) ... [2024-11-23 01:55:51,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:55:52,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:55:52,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:55:52,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:55:52,148 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:55:52,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52 WrapperNode [2024-11-23 01:55:52,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:55:52,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:55:52,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:55:52,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:55:52,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,220 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 737 [2024-11-23 01:55:52,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:55:52,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:55:52,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:55:52,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:55:52,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,317 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-23 01:55:52,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:55:52,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:55:52,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:55:52,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:55:52,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (1/1) ... [2024-11-23 01:55:52,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:55:52,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:52,430 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) [2024-11-23 01:55:52,432 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 [2024-11-23 01:55:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:55:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:55:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:55:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:55:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:55:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:55:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:55:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:55:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:55:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:55:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:55:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:55:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:55:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:55:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:55:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:55:52,474 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:55:52,607 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:55:52,609 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:55:53,449 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:55:53,450 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:55:54,027 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:55:54,028 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 01:55:54,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:54 BoogieIcfgContainer [2024-11-23 01:55:54,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:55:54,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:55:54,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:55:54,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:55:54,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:51" (1/3) ... [2024-11-23 01:55:54,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390db102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:54, skipping insertion in model container [2024-11-23 01:55:54,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:52" (2/3) ... [2024-11-23 01:55:54,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390db102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:54, skipping insertion in model container [2024-11-23 01:55:54,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:54" (3/3) ... [2024-11-23 01:55:54,035 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-11-23 01:55:54,048 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:55:54,048 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-23 01:55:54,049 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:55:54,158 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 01:55:54,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 248 transitions, 517 flow [2024-11-23 01:55:54,250 INFO L124 PetriNetUnfolderBase]: 39/245 cut-off events. [2024-11-23 01:55:54,250 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 01:55:54,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 245 events. 39/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1427 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2024-11-23 01:55:54,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 248 transitions, 517 flow [2024-11-23 01:55:54,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 243 transitions, 501 flow [2024-11-23 01:55:54,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:55:54,283 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;@53a5cb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:55:54,283 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2024-11-23 01:55:54,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:55:54,288 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:55:54,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:55:54,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:54,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:55:54,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-23 01:55:54,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2303842, now seen corresponding path program 1 times [2024-11-23 01:55:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:54,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759651824] [2024-11-23 01:55:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:54,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:54,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759651824] [2024-11-23 01:55:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759651824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:54,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:54,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:55:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922380051] [2024-11-23 01:55:54,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:54,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:54,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:54,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-11-23 01:55:54,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 243 transitions, 501 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 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) [2024-11-23 01:55:54,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:54,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-11-23 01:55:54,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:09,150 INFO L124 PetriNetUnfolderBase]: 124995/225807 cut-off events. [2024-11-23 01:56:09,151 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-11-23 01:56:09,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387951 conditions, 225807 events. 124995/225807 cut-off events. For 2493/2493 co-relation queries the response was YES. Maximal size of possible extension queue 11455. Compared 2641393 event pairs, 82770 based on Foata normal form. 3/181386 useless extension candidates. Maximal degree in co-relation 381895. Up to 160188 conditions per place. [2024-11-23 01:56:11,787 INFO L140 encePairwiseOnDemand]: 229/248 looper letters, 119 selfloop transitions, 10 changer transitions 0/249 dead transitions. [2024-11-23 01:56:11,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 249 transitions, 771 flow [2024-11-23 01:56:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2024-11-23 01:56:11,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6350806451612904 [2024-11-23 01:56:11,805 INFO L175 Difference]: Start difference. First operand has 214 places, 243 transitions, 501 flow. Second operand 4 states and 630 transitions. [2024-11-23 01:56:11,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 249 transitions, 771 flow [2024-11-23 01:56:11,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 249 transitions, 762 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:11,838 INFO L231 Difference]: Finished difference. Result has 215 places, 249 transitions, 574 flow [2024-11-23 01:56:11,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=215, PETRI_TRANSITIONS=249} [2024-11-23 01:56:11,842 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2024-11-23 01:56:11,843 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 249 transitions, 574 flow [2024-11-23 01:56:11,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 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) [2024-11-23 01:56:11,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:11,844 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 01:56:11,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:56:11,844 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-23 01:56:11,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -83539841, now seen corresponding path program 1 times [2024-11-23 01:56:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:11,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213819860] [2024-11-23 01:56:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:12,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:12,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213819860] [2024-11-23 01:56:12,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213819860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:12,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421697443] [2024-11-23 01:56:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:12,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:12,139 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) [2024-11-23 01:56:12,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:56:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:12,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:12,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:12,281 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421697443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:12,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:56:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:56:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123759997] [2024-11-23 01:56:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:56:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:56:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:56:12,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-11-23 01:56:12,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 249 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 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) [2024-11-23 01:56:12,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:12,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-11-23 01:56:12,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:25,952 INFO L124 PetriNetUnfolderBase]: 124995/225804 cut-off events. [2024-11-23 01:56:25,953 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-11-23 01:56:26,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387303 conditions, 225804 events. 124995/225804 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 11455. Compared 2641287 event pairs, 82770 based on Foata normal form. 3/181388 useless extension candidates. Maximal degree in co-relation 387230. Up to 160173 conditions per place. [2024-11-23 01:56:27,962 INFO L140 encePairwiseOnDemand]: 235/248 looper letters, 109 selfloop transitions, 17 changer transitions 0/246 dead transitions. [2024-11-23 01:56:27,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 246 transitions, 814 flow [2024-11-23 01:56:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2024-11-23 01:56:27,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5826612903225806 [2024-11-23 01:56:27,967 INFO L175 Difference]: Start difference. First operand has 215 places, 249 transitions, 574 flow. Second operand 6 states and 867 transitions. [2024-11-23 01:56:27,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 246 transitions, 814 flow [2024-11-23 01:56:27,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 246 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:56:27,972 INFO L231 Difference]: Finished difference. Result has 217 places, 246 transitions, 596 flow [2024-11-23 01:56:27,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=596, PETRI_PLACES=217, PETRI_TRANSITIONS=246} [2024-11-23 01:56:27,973 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2024-11-23 01:56:27,973 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 246 transitions, 596 flow [2024-11-23 01:56:27,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 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) [2024-11-23 01:56:27,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:27,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:56:27,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:28,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:28,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-23 01:56:28,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1705234418, now seen corresponding path program 1 times [2024-11-23 01:56:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:28,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588913003] [2024-11-23 01:56:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:28,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588913003] [2024-11-23 01:56:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588913003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476412524] [2024-11-23 01:56:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:28,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:28,270 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) [2024-11-23 01:56:28,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:56:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:28,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:28,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:28,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:28,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476412524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:28,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:28,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 01:56:28,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913505923] [2024-11-23 01:56:28,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:28,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:56:28,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:28,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:56:28,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:56:28,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-11-23 01:56:28,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 246 transitions, 596 flow. Second operand has 12 states, 12 states have (on average 124.08333333333333) internal successors, (1489), 12 states have internal predecessors, (1489), 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) [2024-11-23 01:56:28,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:28,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-11-23 01:56:28,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand