./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-trans.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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:09:10,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:09:11,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:09:11,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:09:11,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:09:11,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:09:11,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:09:11,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:09:11,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:09:11,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:09:11,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:09:11,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:09:11,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:09:11,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:09:11,090 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:09:11,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:09:11,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:09:11,091 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:09:11,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:09:11,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:09:11,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:09:11,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:09:11,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:09:11,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:09:11,093 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:09:11,094 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:09:11,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:09:11,094 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:09:11,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:09:11,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:09:11,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:09:11,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:09:11,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:09:11,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:09:11,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:09:11,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:09:11,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:09:11,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:09:11,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:09:11,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:09:11,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:09:11,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:09:11,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:09:11,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:09:11,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-11-09 15:09:11,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:09:11,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:09:11,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:09:11,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:09:11,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:09:11,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-09 15:09:12,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:09:13,001 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:09:13,002 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-09 15:09:13,015 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cc92bde/a7168ea656ce4cf7bd7a74c493269a06/FLAGe36f7abe8 [2024-11-09 15:09:13,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cc92bde/a7168ea656ce4cf7bd7a74c493269a06 [2024-11-09 15:09:13,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:09:13,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:09:13,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:09:13,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:09:13,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:09:13,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b71af2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13, skipping insertion in model container [2024-11-09 15:09:13,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:09:13,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:09:13,380 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:09:13,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:09:13,458 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:09:13,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13 WrapperNode [2024-11-09 15:09:13,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:09:13,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:09:13,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:09:13,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:09:13,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,559 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 737 [2024-11-09 15:09:13,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:09:13,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:09:13,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:09:13,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:09:13,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,585 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,616 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]. [2024-11-09 15:09:13,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:09:13,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:09:13,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:09:13,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:09:13,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (1/1) ... [2024-11-09 15:09:13,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:09:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:13,732 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) [2024-11-09 15:09:13,735 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 [2024-11-09 15:09:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:09:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:09:13,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:09:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:09:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:09:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:09:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:09:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:09:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:09:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:09:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:09:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:09:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:09:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:09:13,792 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:09:13,954 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:09:13,956 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:09:15,000 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:09:15,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:09:15,734 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:09:15,735 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 15:09:15,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:15 BoogieIcfgContainer [2024-11-09 15:09:15,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:09:15,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:09:15,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:09:15,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:09:15,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:09:13" (1/3) ... [2024-11-09 15:09:15,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112a622b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:09:15, skipping insertion in model container [2024-11-09 15:09:15,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:13" (2/3) ... [2024-11-09 15:09:15,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112a622b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:09:15, skipping insertion in model container [2024-11-09 15:09:15,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:15" (3/3) ... [2024-11-09 15:09:15,745 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-11-09 15:09:15,763 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:09:15,763 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-09 15:09:15,763 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:09:15,929 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:09:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 248 transitions, 517 flow [2024-11-09 15:09:16,076 INFO L124 PetriNetUnfolderBase]: 39/245 cut-off events. [2024-11-09 15:09:16,076 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:09:16,086 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. [2024-11-09 15:09:16,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 248 transitions, 517 flow [2024-11-09 15:09:16,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 243 transitions, 501 flow [2024-11-09 15:09:16,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:09:16,123 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;@51e3ec80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:09:16,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2024-11-09 15:09:16,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:09:16,129 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:09:16,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:09:16,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:16,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:09:16,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-09 15:09:16,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2303842, now seen corresponding path program 1 times [2024-11-09 15:09:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954050324] [2024-11-09 15:09:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:16,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:16,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:16,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954050324] [2024-11-09 15:09:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954050324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:16,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786727696] [2024-11-09 15:09:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:16,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:16,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-11-09 15:09:16,598 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) [2024-11-09 15:09:16,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:16,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-11-09 15:09:16,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:33,446 INFO L124 PetriNetUnfolderBase]: 124995/225807 cut-off events. [2024-11-09 15:09:33,446 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-11-09 15:09:33,996 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. [2024-11-09 15:09:35,448 INFO L140 encePairwiseOnDemand]: 229/248 looper letters, 119 selfloop transitions, 10 changer transitions 0/249 dead transitions. [2024-11-09 15:09:35,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 249 transitions, 771 flow [2024-11-09 15:09:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2024-11-09 15:09:35,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6350806451612904 [2024-11-09 15:09:35,470 INFO L175 Difference]: Start difference. First operand has 214 places, 243 transitions, 501 flow. Second operand 4 states and 630 transitions. [2024-11-09 15:09:35,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 249 transitions, 771 flow [2024-11-09 15:09:35,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 249 transitions, 762 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:09:35,532 INFO L231 Difference]: Finished difference. Result has 215 places, 249 transitions, 574 flow [2024-11-09 15:09:35,534 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} [2024-11-09 15:09:35,538 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2024-11-09 15:09:35,540 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 249 transitions, 574 flow [2024-11-09 15:09:35,542 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) [2024-11-09 15:09:35,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:35,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:09:35,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:09:35,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-09 15:09:35,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash -83539841, now seen corresponding path program 1 times [2024-11-09 15:09:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257109864] [2024-11-09 15:09:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257109864] [2024-11-09 15:09:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257109864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456531874] [2024-11-09 15:09:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:35,746 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) [2024-11-09 15:09:35,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:09:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:35,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:35,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:35,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:35,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456531874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:35,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:35,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:09:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122182614] [2024-11-09 15:09:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:35,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:09:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:35,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:09:35,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:35,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-11-09 15:09:35,973 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) [2024-11-09 15:09:35,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:35,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-11-09 15:09:35,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:50,386 INFO L124 PetriNetUnfolderBase]: 124995/225804 cut-off events. [2024-11-09 15:09:50,386 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-11-09 15:09:50,980 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. [2024-11-09 15:09:52,210 INFO L140 encePairwiseOnDemand]: 235/248 looper letters, 109 selfloop transitions, 17 changer transitions 0/246 dead transitions. [2024-11-09 15:09:52,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 246 transitions, 814 flow [2024-11-09 15:09:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:09:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:09:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2024-11-09 15:09:52,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5826612903225806 [2024-11-09 15:09:52,215 INFO L175 Difference]: Start difference. First operand has 215 places, 249 transitions, 574 flow. Second operand 6 states and 867 transitions. [2024-11-09 15:09:52,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 246 transitions, 814 flow [2024-11-09 15:09:52,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 246 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:09:52,221 INFO L231 Difference]: Finished difference. Result has 217 places, 246 transitions, 596 flow [2024-11-09 15:09:52,222 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} [2024-11-09 15:09:52,222 INFO L277 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2024-11-09 15:09:52,222 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 246 transitions, 596 flow [2024-11-09 15:09:52,223 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) [2024-11-09 15:09:52,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:52,223 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:09:52,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:09:52,427 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 [2024-11-09 15:09:52,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-09 15:09:52,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1705234418, now seen corresponding path program 1 times [2024-11-09 15:09:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509809290] [2024-11-09 15:09:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509809290] [2024-11-09 15:09:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509809290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011461699] [2024-11-09 15:09:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:52,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:52,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:52,559 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) [2024-11-09 15:09:52,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:09:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:52,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:52,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:52,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:52,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011461699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:09:52,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:09:52,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:09:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833302837] [2024-11-09 15:09:52,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:09:52,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:09:52,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:09:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:09:52,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 248 [2024-11-09 15:09:52,792 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) [2024-11-09 15:09:52,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:52,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 248 [2024-11-09 15:09:52,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand