./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 a046e57d 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 /storage/repos/ultimate/releaseScripts/default/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-mul-div-a046e57-m [2024-10-13 16:46:38,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:46:38,187 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:46:38,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:46:38,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:46:38,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:46:38,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:46:38,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:46:38,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:46:38,216 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:46:38,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:46:38,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:46:38,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:46:38,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:46:38,218 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:46:38,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:46:38,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:46:38,219 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:46:38,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:46:38,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:46:38,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:46:38,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:46:38,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:46:38,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:46:38,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:46:38,222 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:46:38,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:46:38,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:46:38,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:46:38,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:46:38,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:46:38,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:46:38,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:46:38,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:46:38,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:46:38,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:46:38,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:46:38,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:46:38,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:46:38,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:46:38,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:46:38,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:46:38,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:46:38,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:46:38,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-10-13 16:46:38,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:46:38,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:46:38,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:46:38,521 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:46:38,521 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:46:38,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-13 16:46:39,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:46:40,221 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:46:40,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-10-13 16:46:40,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c5d74271/16e30a850c88442db6f98cbdb1f58798/FLAGda287e846 [2024-10-13 16:46:40,246 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c5d74271/16e30a850c88442db6f98cbdb1f58798 [2024-10-13 16:46:40,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:46:40,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:46:40,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:46:40,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:46:40,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:46:40,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4321b04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40, skipping insertion in model container [2024-10-13 16:46:40,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,280 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:46:40,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:46:40,536 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:46:40,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:46:40,598 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:46:40,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40 WrapperNode [2024-10-13 16:46:40,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:46:40,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:46:40,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:46:40,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:46:40,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,670 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 737 [2024-10-13 16:46:40,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:46:40,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:46:40,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:46:40,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:46:40,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,731 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]. [2024-10-13 16:46:40,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:46:40,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:46:40,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:46:40,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:46:40,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (1/1) ... [2024-10-13 16:46:40,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:46:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:40,863 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) [2024-10-13 16:46:40,866 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 [2024-10-13 16:46:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:46:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:46:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:46:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:46:40,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:46:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:46:40,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:46:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:46:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:46:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:46:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:46:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:46:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:46:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:46:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:46:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:46:40,918 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:46:41,059 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:46:41,061 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:46:42,048 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:46:42,048 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:46:42,737 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:46:42,737 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 16:46:42,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:46:42 BoogieIcfgContainer [2024-10-13 16:46:42,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:46:42,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:46:42,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:46:42,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:46:42,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:46:40" (1/3) ... [2024-10-13 16:46:42,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77690be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:46:42, skipping insertion in model container [2024-10-13 16:46:42,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:40" (2/3) ... [2024-10-13 16:46:42,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77690be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:46:42, skipping insertion in model container [2024-10-13 16:46:42,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:46:42" (3/3) ... [2024-10-13 16:46:42,747 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-10-13 16:46:42,765 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:46:42,765 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-10-13 16:46:42,765 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:46:42,927 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:46:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 248 transitions, 517 flow [2024-10-13 16:46:43,083 INFO L124 PetriNetUnfolderBase]: 39/245 cut-off events. [2024-10-13 16:46:43,085 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:46:43,095 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. [2024-10-13 16:46:43,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 248 transitions, 517 flow [2024-10-13 16:46:43,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 243 transitions, 501 flow [2024-10-13 16:46:43,121 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:46:43,128 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;@6b5048a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:46:43,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2024-10-13 16:46:43,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:46:43,135 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:46:43,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:46:43,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:43,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:46:43,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-10-13 16:46:43,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2303842, now seen corresponding path program 1 times [2024-10-13 16:46:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:43,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656037824] [2024-10-13 16:46:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656037824] [2024-10-13 16:46:43,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656037824] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:43,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:43,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:46:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627055601] [2024-10-13 16:46:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:43,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:43,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-10-13 16:46:43,576 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) [2024-10-13 16:46:43,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:43,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-10-13 16:46:43,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:00,804 INFO L124 PetriNetUnfolderBase]: 124995/225807 cut-off events. [2024-10-13 16:47:00,805 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-10-13 16:47:01,362 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. [2024-10-13 16:47:02,663 INFO L140 encePairwiseOnDemand]: 229/248 looper letters, 119 selfloop transitions, 10 changer transitions 0/249 dead transitions. [2024-10-13 16:47:02,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 249 transitions, 771 flow [2024-10-13 16:47:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2024-10-13 16:47:02,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6350806451612904 [2024-10-13 16:47:02,681 INFO L175 Difference]: Start difference. First operand has 214 places, 243 transitions, 501 flow. Second operand 4 states and 630 transitions. [2024-10-13 16:47:02,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 249 transitions, 771 flow [2024-10-13 16:47:02,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 249 transitions, 762 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:02,737 INFO L231 Difference]: Finished difference. Result has 215 places, 249 transitions, 574 flow [2024-10-13 16:47:02,739 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} [2024-10-13 16:47:02,742 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2024-10-13 16:47:02,742 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 249 transitions, 574 flow [2024-10-13 16:47:02,743 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) [2024-10-13 16:47:02,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:02,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:47:02,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:47:02,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-10-13 16:47:02,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash -83539841, now seen corresponding path program 1 times [2024-10-13 16:47:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:02,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416742135] [2024-10-13 16:47:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:02,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416742135] [2024-10-13 16:47:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416742135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318434743] [2024-10-13 16:47:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:02,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:02,908 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) [2024-10-13 16:47:02,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:47:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:03,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:03,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:03,104 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:47:03,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318434743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:03,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:47:03,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:47:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474199205] [2024-10-13 16:47:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:03,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:03,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:47:03,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-10-13 16:47:03,134 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) [2024-10-13 16:47:03,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:03,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-10-13 16:47:03,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:18,275 INFO L124 PetriNetUnfolderBase]: 124995/225804 cut-off events. [2024-10-13 16:47:18,275 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-10-13 16:47:18,848 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. [2024-10-13 16:47:19,946 INFO L140 encePairwiseOnDemand]: 235/248 looper letters, 109 selfloop transitions, 17 changer transitions 0/246 dead transitions. [2024-10-13 16:47:19,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 246 transitions, 814 flow [2024-10-13 16:47:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:47:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:47:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2024-10-13 16:47:19,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5826612903225806 [2024-10-13 16:47:19,952 INFO L175 Difference]: Start difference. First operand has 215 places, 249 transitions, 574 flow. Second operand 6 states and 867 transitions. [2024-10-13 16:47:19,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 246 transitions, 814 flow [2024-10-13 16:47:19,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 246 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:19,962 INFO L231 Difference]: Finished difference. Result has 217 places, 246 transitions, 596 flow [2024-10-13 16:47:19,963 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} [2024-10-13 16:47:19,966 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2024-10-13 16:47:19,967 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 246 transitions, 596 flow [2024-10-13 16:47:19,967 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) [2024-10-13 16:47:19,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:19,967 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:47:19,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:47:20,168 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 [2024-10-13 16:47:20,169 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-10-13 16:47:20,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1705234418, now seen corresponding path program 1 times [2024-10-13 16:47:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58980139] [2024-10-13 16:47:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:20,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:20,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58980139] [2024-10-13 16:47:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58980139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:20,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455730950] [2024-10-13 16:47:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:20,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:20,307 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) [2024-10-13 16:47:20,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:47:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:20,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:20,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:20,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:47:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455730950] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:47:20,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:47:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:47:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061813059] [2024-10-13 16:47:20,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:47:20,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:47:20,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:47:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:47:20,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-10-13 16:47:20,549 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) [2024-10-13 16:47:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-10-13 16:47:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand