./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-12 00:02:20,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:02:20,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:02:20,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:02:20,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:02:20,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:02:20,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:02:20,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:02:20,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:02:20,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:02:20,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:02:20,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:02:20,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:02:20,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:02:20,913 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:02:20,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:02:20,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:02:20,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:02:20,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:02:20,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:02:20,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:02:20,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:02:20,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:02:20,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:02:20,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:02:20,918 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:02:20,918 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:02:20,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:02:20,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:02:20,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:02:20,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:02:20,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:02:20,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:02:20,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:02:20,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:02:20,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:02:20,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:02:20,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:02:20,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:02:20,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:02:20,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:02:20,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:02:20,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:02:20,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:02:20,921 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-10-12 00:02:21,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:02:21,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:02:21,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:02:21,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:02:21,179 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:02:21,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-12 00:02:22,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:02:22,836 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:02:22,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-12 00:02:22,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3fb3dacd6/45685a28e2ee438883c84528090189ff/FLAGc1d83fb27 [2024-10-12 00:02:22,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3fb3dacd6/45685a28e2ee438883c84528090189ff [2024-10-12 00:02:22,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:02:22,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:02:22,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:02:22,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:02:22,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:02:22,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:02:22" (1/1) ... [2024-10-12 00:02:22,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340fba4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:22, skipping insertion in model container [2024-10-12 00:02:22,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:02:22" (1/1) ... [2024-10-12 00:02:22,923 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:02:23,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:02:23,194 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:02:23,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:02:23,254 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:02:23,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23 WrapperNode [2024-10-12 00:02:23,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:02:23,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:02:23,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:02:23,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:02:23,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,324 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 737 [2024-10-12 00:02:23,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:02:23,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:02:23,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:02:23,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:02:23,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,343 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,387 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]. [2024-10-12 00:02:23,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:02:23,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:02:23,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:02:23,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:02:23,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (1/1) ... [2024-10-12 00:02:23,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:02:23,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:23,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:02:23,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:02:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:02:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:02:23,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:02:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:02:23,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:02:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:02:23,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:02:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:02:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:02:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:02:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:02:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:02:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:02:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:02:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:02:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:02:23,530 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:02:23,695 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:02:23,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:02:24,648 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:02:24,649 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:02:25,310 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:02:25,311 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 00:02:25,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:02:25 BoogieIcfgContainer [2024-10-12 00:02:25,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:02:25,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:02:25,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:02:25,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:02:25,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:02:22" (1/3) ... [2024-10-12 00:02:25,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5454906a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:02:25, skipping insertion in model container [2024-10-12 00:02:25,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:02:23" (2/3) ... [2024-10-12 00:02:25,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5454906a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:02:25, skipping insertion in model container [2024-10-12 00:02:25,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:02:25" (3/3) ... [2024-10-12 00:02:25,319 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-10-12 00:02:25,335 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:02:25,336 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-10-12 00:02:25,336 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:02:25,446 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:02:25,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 248 transitions, 517 flow [2024-10-12 00:02:25,544 INFO L124 PetriNetUnfolderBase]: 39/245 cut-off events. [2024-10-12 00:02:25,544 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:02:25,552 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. [2024-10-12 00:02:25,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 248 transitions, 517 flow [2024-10-12 00:02:25,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 243 transitions, 501 flow [2024-10-12 00:02:25,568 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:02:25,574 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;@4c4c3a1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:02:25,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2024-10-12 00:02:25,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:02:25,577 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:02:25,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:02:25,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:25,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:02:25,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-10-12 00:02:25,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2303842, now seen corresponding path program 1 times [2024-10-12 00:02:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:25,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758284080] [2024-10-12 00:02:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:25,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:25,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758284080] [2024-10-12 00:02:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758284080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:25,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:02:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206099244] [2024-10-12 00:02:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:25,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:26,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-10-12 00:02:26,012 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) [2024-10-12 00:02:26,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:26,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-10-12 00:02:26,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:42,343 INFO L124 PetriNetUnfolderBase]: 124995/225807 cut-off events. [2024-10-12 00:02:42,344 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-10-12 00:02:42,924 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. [2024-10-12 00:02:44,181 INFO L140 encePairwiseOnDemand]: 229/248 looper letters, 119 selfloop transitions, 10 changer transitions 0/249 dead transitions. [2024-10-12 00:02:44,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 249 transitions, 771 flow [2024-10-12 00:02:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2024-10-12 00:02:44,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6350806451612904 [2024-10-12 00:02:44,200 INFO L175 Difference]: Start difference. First operand has 214 places, 243 transitions, 501 flow. Second operand 4 states and 630 transitions. [2024-10-12 00:02:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 249 transitions, 771 flow [2024-10-12 00:02:44,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 249 transitions, 762 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:02:44,249 INFO L231 Difference]: Finished difference. Result has 215 places, 249 transitions, 574 flow [2024-10-12 00:02:44,251 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} [2024-10-12 00:02:44,255 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2024-10-12 00:02:44,255 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 249 transitions, 574 flow [2024-10-12 00:02:44,256 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) [2024-10-12 00:02:44,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:44,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:02:44,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:02:44,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-10-12 00:02:44,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:44,259 INFO L85 PathProgramCache]: Analyzing trace with hash -83539841, now seen corresponding path program 1 times [2024-10-12 00:02:44,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:44,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318143903] [2024-10-12 00:02:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:44,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:44,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318143903] [2024-10-12 00:02:44,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318143903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039059630] [2024-10-12 00:02:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:44,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:44,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:44,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:44,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:02:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:44,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:02:44,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:44,550 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:44,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039059630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:44,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:44,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:02:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628971289] [2024-10-12 00:02:44,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:44,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:44,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-10-12 00:02:44,577 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) [2024-10-12 00:02:44,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:44,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-10-12 00:02:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:57,958 INFO L124 PetriNetUnfolderBase]: 124995/225804 cut-off events. [2024-10-12 00:02:57,959 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-10-12 00:02:58,592 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. [2024-10-12 00:02:59,958 INFO L140 encePairwiseOnDemand]: 235/248 looper letters, 109 selfloop transitions, 17 changer transitions 0/246 dead transitions. [2024-10-12 00:02:59,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 246 transitions, 814 flow [2024-10-12 00:02:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2024-10-12 00:02:59,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5826612903225806 [2024-10-12 00:02:59,964 INFO L175 Difference]: Start difference. First operand has 215 places, 249 transitions, 574 flow. Second operand 6 states and 867 transitions. [2024-10-12 00:02:59,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 246 transitions, 814 flow [2024-10-12 00:02:59,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 246 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:02:59,970 INFO L231 Difference]: Finished difference. Result has 217 places, 246 transitions, 596 flow [2024-10-12 00:02:59,973 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} [2024-10-12 00:02:59,973 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2024-10-12 00:02:59,974 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 246 transitions, 596 flow [2024-10-12 00:02:59,974 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) [2024-10-12 00:02:59,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:59,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:02:59,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:03:00,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:00,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-10-12 00:03:00,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1705234418, now seen corresponding path program 1 times [2024-10-12 00:03:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:00,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183953897] [2024-10-12 00:03:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:00,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:00,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:00,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183953897] [2024-10-12 00:03:00,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183953897] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:00,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26765745] [2024-10-12 00:03:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:00,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:03:00,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:03:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:00,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:03:00,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:00,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26765745] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:00,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:00,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:03:00,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056587248] [2024-10-12 00:03:00,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:00,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:03:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:03:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:03:00,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-10-12 00:03:00,492 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) [2024-10-12 00:03:00,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:00,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-10-12 00:03:00,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand