./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.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/popl20-more-array-sum-alt.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 cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:12:39,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:12:39,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:12:39,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:12:39,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:12:39,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:12:39,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:12:39,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:12:39,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:12:39,589 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:12:39,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:12:39,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:12:39,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:12:39,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:12:39,592 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:12:39,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:12:39,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:12:39,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:12:39,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:12:39,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:12:39,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:12:39,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:12:39,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:12:39,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:12:39,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:12:39,599 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:12:39,599 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:12:39,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:12:39,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:12:39,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:12:39,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:12:39,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:12:39,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:12:39,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:12:39,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:39,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:12:39,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:12:39,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:12:39,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:12:39,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:12:39,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:12:39,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:12:39,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:12:39,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:12:39,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 [2024-11-09 15:12:39,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:12:39,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:12:39,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:12:39,862 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:12:39,863 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:12:39,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-09 15:12:41,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:12:41,471 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:12:41,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-09 15:12:41,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ec96461/46d3cca02d9f4f1aae0509095f191678/FLAGea161440b [2024-11-09 15:12:41,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ec96461/46d3cca02d9f4f1aae0509095f191678 [2024-11-09 15:12:41,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:12:41,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:12:41,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:41,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:12:41,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:12:41,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:41" (1/1) ... [2024-11-09 15:12:41,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5182f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:41, skipping insertion in model container [2024-11-09 15:12:41,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:41" (1/1) ... [2024-11-09 15:12:41,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:12:42,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:42,157 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:12:42,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:42,195 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:12:42,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42 WrapperNode [2024-11-09 15:12:42,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:42,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:42,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:12:42,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:12:42,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,234 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 236 [2024-11-09 15:12:42,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:42,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:12:42,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:12:42,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:12:42,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,262 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 15:12:42,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:12:42,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:12:42,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:12:42,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:12:42,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (1/1) ... [2024-11-09 15:12:42,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:42,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:42,321 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 15:12:42,323 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 15:12:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:12:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:12:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:12:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:12:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:12:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:12:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:12:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:12:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:12:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:12:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:12:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:12:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:12:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:12:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:12:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:12:42,373 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 15:12:42,475 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:12:42,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:12:42,843 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:12:42,843 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:12:43,091 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:12:43,092 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:12:43,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:43 BoogieIcfgContainer [2024-11-09 15:12:43,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:12:43,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:12:43,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:12:43,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:12:43,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:12:41" (1/3) ... [2024-11-09 15:12:43,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a3309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:43, skipping insertion in model container [2024-11-09 15:12:43,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:42" (2/3) ... [2024-11-09 15:12:43,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a3309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:43, skipping insertion in model container [2024-11-09 15:12:43,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:43" (3/3) ... [2024-11-09 15:12:43,103 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-11-09 15:12:43,120 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:12:43,121 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-09 15:12:43,121 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:12:43,203 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:12:43,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 219 flow [2024-11-09 15:12:43,322 INFO L124 PetriNetUnfolderBase]: 10/96 cut-off events. [2024-11-09 15:12:43,322 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:12:43,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 10/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 355 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2024-11-09 15:12:43,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 219 flow [2024-11-09 15:12:43,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 203 flow [2024-11-09 15:12:43,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:12:43,346 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;@2f29a978, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:12:43,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-09 15:12:43,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:12:43,349 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:12:43,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:12:43,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:43,349 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:12:43,350 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:43,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash 726712, now seen corresponding path program 1 times [2024-11-09 15:12:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:43,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395467848] [2024-11-09 15:12:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:43,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:43,650 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 15:12:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395467848] [2024-11-09 15:12:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395467848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:43,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:43,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:12:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670697670] [2024-11-09 15:12:43,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:43,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:43,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:43,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-11-09 15:12:43,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 15:12:43,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:43,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-11-09 15:12:43,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:44,856 INFO L124 PetriNetUnfolderBase]: 5173/10302 cut-off events. [2024-11-09 15:12:44,856 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-11-09 15:12:44,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17443 conditions, 10302 events. 5173/10302 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88946 event pairs, 3548 based on Foata normal form. 1/8373 useless extension candidates. Maximal degree in co-relation 16640. Up to 6885 conditions per place. [2024-11-09 15:12:44,949 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 42 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-09 15:12:44,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 97 transitions, 301 flow [2024-11-09 15:12:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-09 15:12:44,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:12:44,967 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 203 flow. Second operand 4 states and 264 transitions. [2024-11-09 15:12:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 97 transitions, 301 flow [2024-11-09 15:12:44,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 292 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:44,980 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 223 flow [2024-11-09 15:12:44,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2024-11-09 15:12:44,987 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-11-09 15:12:44,988 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 223 flow [2024-11-09 15:12:44,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 15:12:44,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:44,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:12:44,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:12:44,990 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:44,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash 175398176, now seen corresponding path program 1 times [2024-11-09 15:12:44,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509744240] [2024-11-09 15:12:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:44,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:45,137 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 15:12:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509744240] [2024-11-09 15:12:45,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509744240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:45,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836124135] [2024-11-09 15:12:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:45,140 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 15:12:45,141 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 15:12:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:45,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:45,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:45,258 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 15:12:45,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:45,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836124135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:45,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:45,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:12:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164936422] [2024-11-09 15:12:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:45,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:12:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:12:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:12:45,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-11-09 15:12:45,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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 15:12:45,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:45,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-11-09 15:12:45,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:46,299 INFO L124 PetriNetUnfolderBase]: 5173/10301 cut-off events. [2024-11-09 15:12:46,300 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-09 15:12:46,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17354 conditions, 10301 events. 5173/10301 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88826 event pairs, 3548 based on Foata normal form. 1/8373 useless extension candidates. Maximal degree in co-relation 17327. Up to 6880 conditions per place. [2024-11-09 15:12:46,364 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 38 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2024-11-09 15:12:46,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 309 flow [2024-11-09 15:12:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:12:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:12:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-11-09 15:12:46,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.622895622895623 [2024-11-09 15:12:46,368 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 223 flow. Second operand 6 states and 370 transitions. [2024-11-09 15:12:46,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 309 flow [2024-11-09 15:12:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:46,371 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 230 flow [2024-11-09 15:12:46,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2024-11-09 15:12:46,372 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2024-11-09 15:12:46,372 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 230 flow [2024-11-09 15:12:46,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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 15:12:46,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:46,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:46,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:46,577 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 15:12:46,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:46,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1327580804, now seen corresponding path program 1 times [2024-11-09 15:12:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424208278] [2024-11-09 15:12:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:46,742 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 15:12:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424208278] [2024-11-09 15:12:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424208278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:46,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:12:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984598968] [2024-11-09 15:12:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:46,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:46,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-09 15:12:46,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 15:12:46,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:46,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-09 15:12:46,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:48,266 INFO L124 PetriNetUnfolderBase]: 9897/17785 cut-off events. [2024-11-09 15:12:48,267 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-09 15:12:48,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31319 conditions, 17785 events. 9897/17785 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 152354 event pairs, 3200 based on Foata normal form. 444/15049 useless extension candidates. Maximal degree in co-relation 31289. Up to 6292 conditions per place. [2024-11-09 15:12:48,374 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 98 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-09 15:12:48,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 149 transitions, 548 flow [2024-11-09 15:12:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-11-09 15:12:48,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7651515151515151 [2024-11-09 15:12:48,377 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 230 flow. Second operand 4 states and 303 transitions. [2024-11-09 15:12:48,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 149 transitions, 548 flow [2024-11-09 15:12:48,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 149 transitions, 526 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:48,382 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 242 flow [2024-11-09 15:12:48,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2024-11-09 15:12:48,383 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2024-11-09 15:12:48,383 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 242 flow [2024-11-09 15:12:48,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 15:12:48,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:48,384 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:12:48,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:12:48,384 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:48,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:48,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1142376923, now seen corresponding path program 1 times [2024-11-09 15:12:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78333914] [2024-11-09 15:12:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:48,477 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 15:12:48,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:48,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78333914] [2024-11-09 15:12:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78333914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:48,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741447509] [2024-11-09 15:12:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:48,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:48,481 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 15:12:48,483 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 15:12:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:48,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:48,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:48,580 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 15:12:48,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:48,631 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 15:12:48,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741447509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:48,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:48,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:12:48,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409904760] [2024-11-09 15:12:48,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:48,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:12:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:12:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:12:48,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-11-09 15:12:48,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 242 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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 15:12:48,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:48,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-11-09 15:12:48,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:49,805 INFO L124 PetriNetUnfolderBase]: 6435/13259 cut-off events. [2024-11-09 15:12:49,806 INFO L125 PetriNetUnfolderBase]: For 2353/2695 co-relation queries the response was YES. [2024-11-09 15:12:49,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23951 conditions, 13259 events. 6435/13259 cut-off events. For 2353/2695 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 122911 event pairs, 4508 based on Foata normal form. 176/11097 useless extension candidates. Maximal degree in co-relation 23899. Up to 8590 conditions per place. [2024-11-09 15:12:49,884 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 43 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2024-11-09 15:12:49,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 384 flow [2024-11-09 15:12:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:12:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:12:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 597 transitions. [2024-11-09 15:12:49,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603030303030303 [2024-11-09 15:12:49,887 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 242 flow. Second operand 10 states and 597 transitions. [2024-11-09 15:12:49,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 384 flow [2024-11-09 15:12:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:12:49,913 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 316 flow [2024-11-09 15:12:49,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2024-11-09 15:12:49,914 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 15 predicate places. [2024-11-09 15:12:49,914 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 316 flow [2024-11-09 15:12:49,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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 15:12:49,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:49,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:49,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:12:50,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:12:50,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:50,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:50,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1794667246, now seen corresponding path program 1 times [2024-11-09 15:12:50,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:50,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613359356] [2024-11-09 15:12:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:50,221 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 15:12:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613359356] [2024-11-09 15:12:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613359356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:12:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697020984] [2024-11-09 15:12:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:50,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:12:50,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-11-09 15:12:50,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 15:12:50,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:50,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-11-09 15:12:50,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:51,588 INFO L124 PetriNetUnfolderBase]: 8113/16817 cut-off events. [2024-11-09 15:12:51,589 INFO L125 PetriNetUnfolderBase]: For 2945/3287 co-relation queries the response was YES. [2024-11-09 15:12:51,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29955 conditions, 16817 events. 8113/16817 cut-off events. For 2945/3287 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 160005 event pairs, 5203 based on Foata normal form. 365/14404 useless extension candidates. Maximal degree in co-relation 29918. Up to 8594 conditions per place. [2024-11-09 15:12:51,726 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 105 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-09 15:12:51,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 655 flow [2024-11-09 15:12:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:12:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:12:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2024-11-09 15:12:51,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2024-11-09 15:12:51,729 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 316 flow. Second operand 5 states and 380 transitions. [2024-11-09 15:12:51,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 655 flow [2024-11-09 15:12:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 644 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:51,761 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 330 flow [2024-11-09 15:12:51,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-11-09 15:12:51,762 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2024-11-09 15:12:51,762 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 330 flow [2024-11-09 15:12:51,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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 15:12:51,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:51,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:51,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:12:51,763 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:51,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash 105412798, now seen corresponding path program 1 times [2024-11-09 15:12:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:51,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593025133] [2024-11-09 15:12:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:51,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:51,817 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 15:12:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593025133] [2024-11-09 15:12:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593025133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:51,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:51,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:12:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670267501] [2024-11-09 15:12:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:51,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:51,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-09 15:12:51,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 15:12:51,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:51,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-09 15:12:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:53,412 INFO L124 PetriNetUnfolderBase]: 14662/27058 cut-off events. [2024-11-09 15:12:53,413 INFO L125 PetriNetUnfolderBase]: For 8184/8733 co-relation queries the response was YES. [2024-11-09 15:12:53,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53160 conditions, 27058 events. 14662/27058 cut-off events. For 8184/8733 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 249213 event pairs, 5356 based on Foata normal form. 948/23486 useless extension candidates. Maximal degree in co-relation 53121. Up to 9929 conditions per place. [2024-11-09 15:12:53,617 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 115 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2024-11-09 15:12:53,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 754 flow [2024-11-09 15:12:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-11-09 15:12:53,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2024-11-09 15:12:53,620 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 330 flow. Second operand 4 states and 299 transitions. [2024-11-09 15:12:53,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 754 flow [2024-11-09 15:12:53,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 749 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:53,635 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 359 flow [2024-11-09 15:12:53,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2024-11-09 15:12:53,636 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 22 predicate places. [2024-11-09 15:12:53,636 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 359 flow [2024-11-09 15:12:53,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 15:12:53,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:53,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:53,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:12:53,637 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:53,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1027169743, now seen corresponding path program 1 times [2024-11-09 15:12:53,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:53,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501210837] [2024-11-09 15:12:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:53,725 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 15:12:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501210837] [2024-11-09 15:12:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501210837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:53,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:53,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:12:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563836386] [2024-11-09 15:12:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:53,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:53,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:12:53,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-11-09 15:12:53,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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 15:12:53,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:53,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-11-09 15:12:53,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:54,665 INFO L124 PetriNetUnfolderBase]: 8319/17552 cut-off events. [2024-11-09 15:12:54,666 INFO L125 PetriNetUnfolderBase]: For 7204/7995 co-relation queries the response was YES. [2024-11-09 15:12:54,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34605 conditions, 17552 events. 8319/17552 cut-off events. For 7204/7995 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 172114 event pairs, 5846 based on Foata normal form. 484/15327 useless extension candidates. Maximal degree in co-relation 34564. Up to 10564 conditions per place. [2024-11-09 15:12:54,815 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 88 selfloop transitions, 5 changer transitions 2/147 dead transitions. [2024-11-09 15:12:54,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 147 transitions, 638 flow [2024-11-09 15:12:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:12:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:12:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2024-11-09 15:12:54,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-09 15:12:54,817 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 359 flow. Second operand 5 states and 363 transitions. [2024-11-09 15:12:54,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 147 transitions, 638 flow [2024-11-09 15:12:54,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 147 transitions, 638 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:12:54,847 INFO L231 Difference]: Finished difference. Result has 122 places, 113 transitions, 384 flow [2024-11-09 15:12:54,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2024-11-09 15:12:54,848 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 28 predicate places. [2024-11-09 15:12:54,848 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 384 flow [2024-11-09 15:12:54,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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 15:12:54,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:54,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:54,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:12:54,848 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:54,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash -923662422, now seen corresponding path program 1 times [2024-11-09 15:12:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464901985] [2024-11-09 15:12:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:55,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464901985] [2024-11-09 15:12:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464901985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126091990] [2024-11-09 15:12:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:55,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:55,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:55,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:12:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:55,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:12:55,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:55,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:12:55,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:12:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:55,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:55,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:12:55,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:12:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126091990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:55,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:55,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:12:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90646314] [2024-11-09 15:12:55,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:55,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:12:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:12:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:12:55,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 99 [2024-11-09 15:12:55,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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 15:12:55,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:55,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 99 [2024-11-09 15:12:55,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:58,866 INFO L124 PetriNetUnfolderBase]: 19350/38800 cut-off events. [2024-11-09 15:12:58,866 INFO L125 PetriNetUnfolderBase]: For 18586/19775 co-relation queries the response was YES. [2024-11-09 15:12:58,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80591 conditions, 38800 events. 19350/38800 cut-off events. For 18586/19775 co-relation queries the response was YES. Maximal size of possible extension queue 1430. Compared 392275 event pairs, 6167 based on Foata normal form. 721/34924 useless extension candidates. Maximal degree in co-relation 80547. Up to 9012 conditions per place. [2024-11-09 15:12:59,090 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 183 selfloop transitions, 19 changer transitions 1/253 dead transitions. [2024-11-09 15:12:59,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 253 transitions, 1210 flow [2024-11-09 15:12:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:12:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:12:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2024-11-09 15:12:59,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7202020202020202 [2024-11-09 15:12:59,092 INFO L175 Difference]: Start difference. First operand has 122 places, 113 transitions, 384 flow. Second operand 10 states and 713 transitions. [2024-11-09 15:12:59,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 253 transitions, 1210 flow [2024-11-09 15:12:59,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 253 transitions, 1205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:59,235 INFO L231 Difference]: Finished difference. Result has 132 places, 122 transitions, 492 flow [2024-11-09 15:12:59,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=492, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2024-11-09 15:12:59,236 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-11-09 15:12:59,236 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 492 flow [2024-11-09 15:12:59,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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 15:12:59,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:59,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:59,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:12:59,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:59,442 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:59,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1422887261, now seen corresponding path program 1 times [2024-11-09 15:12:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:59,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681686808] [2024-11-09 15:12:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:59,497 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 15:12:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681686808] [2024-11-09 15:12:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681686808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:59,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:59,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:12:59,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590813901] [2024-11-09 15:12:59,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:59,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:59,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:59,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-09 15:12:59,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 15:12:59,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:59,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-09 15:12:59,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:03,770 INFO L124 PetriNetUnfolderBase]: 28389/53259 cut-off events. [2024-11-09 15:13:03,771 INFO L125 PetriNetUnfolderBase]: For 54977/58267 co-relation queries the response was YES. [2024-11-09 15:13:03,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125132 conditions, 53259 events. 28389/53259 cut-off events. For 54977/58267 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 531160 event pairs, 11169 based on Foata normal form. 2415/49002 useless extension candidates. Maximal degree in co-relation 125084. Up to 20656 conditions per place. [2024-11-09 15:13:04,203 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 149 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2024-11-09 15:13:04,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 201 transitions, 1222 flow [2024-11-09 15:13:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-11-09 15:13:04,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-09 15:13:04,206 INFO L175 Difference]: Start difference. First operand has 132 places, 122 transitions, 492 flow. Second operand 4 states and 297 transitions. [2024-11-09 15:13:04,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 201 transitions, 1222 flow [2024-11-09 15:13:04,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 1179 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:04,523 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 503 flow [2024-11-09 15:13:04,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-11-09 15:13:04,524 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-11-09 15:13:04,524 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 503 flow [2024-11-09 15:13:04,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 15:13:04,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:04,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:04,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:13:04,524 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:04,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1431205008, now seen corresponding path program 1 times [2024-11-09 15:13:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:04,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256480941] [2024-11-09 15:13:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:04,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:04,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:04,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256480941] [2024-11-09 15:13:04,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256480941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:04,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850361216] [2024-11-09 15:13:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:04,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:04,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:04,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:04,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:13:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:04,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 15:13:04,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:04,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:04,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:13:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:04,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:04,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 15:13:04,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:13:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850361216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:04,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:13:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128406456] [2024-11-09 15:13:04,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:04,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:13:04,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:13:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:13:05,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-11-09 15:13:05,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 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 15:13:05,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:05,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-11-09 15:13:05,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:10,125 INFO L124 PetriNetUnfolderBase]: 28322/52303 cut-off events. [2024-11-09 15:13:10,126 INFO L125 PetriNetUnfolderBase]: For 46441/49359 co-relation queries the response was YES. [2024-11-09 15:13:10,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126265 conditions, 52303 events. 28322/52303 cut-off events. For 46441/49359 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 512648 event pairs, 9159 based on Foata normal form. 1904/49734 useless extension candidates. Maximal degree in co-relation 126216. Up to 14249 conditions per place. [2024-11-09 15:13:10,556 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 199 selfloop transitions, 19 changer transitions 1/266 dead transitions. [2024-11-09 15:13:10,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 266 transitions, 1437 flow [2024-11-09 15:13:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 693 transitions. [2024-11-09 15:13:10,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-09 15:13:10,559 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 503 flow. Second operand 10 states and 693 transitions. [2024-11-09 15:13:10,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 266 transitions, 1437 flow [2024-11-09 15:13:10,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 266 transitions, 1437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:10,816 INFO L231 Difference]: Finished difference. Result has 143 places, 126 transitions, 567 flow [2024-11-09 15:13:10,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=567, PETRI_PLACES=143, PETRI_TRANSITIONS=126} [2024-11-09 15:13:10,817 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 49 predicate places. [2024-11-09 15:13:10,817 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 126 transitions, 567 flow [2024-11-09 15:13:10,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 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 15:13:10,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:10,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:10,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:11,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:11,019 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:11,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1159832973, now seen corresponding path program 1 times [2024-11-09 15:13:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:11,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982115339] [2024-11-09 15:13:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:11,105 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 15:13:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:11,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982115339] [2024-11-09 15:13:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982115339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:11,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:11,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:13:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040873322] [2024-11-09 15:13:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:11,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:13:11,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-11-09 15:13:11,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 126 transitions, 567 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 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 15:13:11,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:11,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-11-09 15:13:11,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:14,731 INFO L124 PetriNetUnfolderBase]: 19815/41855 cut-off events. [2024-11-09 15:13:14,731 INFO L125 PetriNetUnfolderBase]: For 52028/53891 co-relation queries the response was YES. [2024-11-09 15:13:14,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 41855 events. 19815/41855 cut-off events. For 52028/53891 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 452932 event pairs, 14513 based on Foata normal form. 1140/38732 useless extension candidates. Maximal degree in co-relation 103246. Up to 25927 conditions per place. [2024-11-09 15:13:15,026 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 64 selfloop transitions, 2 changer transitions 22/143 dead transitions. [2024-11-09 15:13:15,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 143 transitions, 799 flow [2024-11-09 15:13:15,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:13:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:13:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2024-11-09 15:13:15,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989898989898989 [2024-11-09 15:13:15,028 INFO L175 Difference]: Start difference. First operand has 143 places, 126 transitions, 567 flow. Second operand 5 states and 346 transitions. [2024-11-09 15:13:15,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 143 transitions, 799 flow [2024-11-09 15:13:15,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 143 transitions, 773 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-09 15:13:15,291 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 523 flow [2024-11-09 15:13:15,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-11-09 15:13:15,291 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 48 predicate places. [2024-11-09 15:13:15,292 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 523 flow [2024-11-09 15:13:15,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 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 15:13:15,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:15,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:15,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:13:15,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:15,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1417683085, now seen corresponding path program 1 times [2024-11-09 15:13:15,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915087942] [2024-11-09 15:13:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915087942] [2024-11-09 15:13:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915087942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:15,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605465165] [2024-11-09 15:13:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:15,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:15,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-09 15:13:15,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 15:13:15,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:15,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-09 15:13:15,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:19,616 INFO L124 PetriNetUnfolderBase]: 25993/48578 cut-off events. [2024-11-09 15:13:19,616 INFO L125 PetriNetUnfolderBase]: For 56758/59021 co-relation queries the response was YES. [2024-11-09 15:13:19,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122370 conditions, 48578 events. 25993/48578 cut-off events. For 56758/59021 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 481270 event pairs, 9754 based on Foata normal form. 1863/46141 useless extension candidates. Maximal degree in co-relation 122332. Up to 17665 conditions per place. [2024-11-09 15:13:20,389 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 123 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2024-11-09 15:13:20,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 178 transitions, 988 flow [2024-11-09 15:13:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-11-09 15:13:20,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-11-09 15:13:20,391 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 523 flow. Second operand 4 states and 300 transitions. [2024-11-09 15:13:20,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 178 transitions, 988 flow [2024-11-09 15:13:20,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 178 transitions, 939 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-11-09 15:13:20,681 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 497 flow [2024-11-09 15:13:20,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-11-09 15:13:20,682 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 37 predicate places. [2024-11-09 15:13:20,682 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 497 flow [2024-11-09 15:13:20,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 15:13:20,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:20,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:20,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:13:20,683 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:20,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1417682060, now seen corresponding path program 1 times [2024-11-09 15:13:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756393713] [2024-11-09 15:13:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:20,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756393713] [2024-11-09 15:13:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756393713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:20,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:20,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233185976] [2024-11-09 15:13:20,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:20,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:13:20,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-11-09 15:13:20,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 497 flow. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 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 15:13:20,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:20,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-11-09 15:13:20,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:25,239 INFO L124 PetriNetUnfolderBase]: 29583/52886 cut-off events. [2024-11-09 15:13:25,239 INFO L125 PetriNetUnfolderBase]: For 50515/53337 co-relation queries the response was YES. [2024-11-09 15:13:25,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130636 conditions, 52886 events. 29583/52886 cut-off events. For 50515/53337 co-relation queries the response was YES. Maximal size of possible extension queue 1876. Compared 506298 event pairs, 5412 based on Foata normal form. 1778/51421 useless extension candidates. Maximal degree in co-relation 130597. Up to 21871 conditions per place. [2024-11-09 15:13:25,640 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 189 selfloop transitions, 8 changer transitions 0/244 dead transitions. [2024-11-09 15:13:25,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 244 transitions, 1310 flow [2024-11-09 15:13:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2024-11-09 15:13:25,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7895622895622896 [2024-11-09 15:13:25,642 INFO L175 Difference]: Start difference. First operand has 131 places, 119 transitions, 497 flow. Second operand 6 states and 469 transitions. [2024-11-09 15:13:25,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 244 transitions, 1310 flow [2024-11-09 15:13:25,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 244 transitions, 1297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:25,977 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 526 flow [2024-11-09 15:13:25,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-11-09 15:13:25,978 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 43 predicate places. [2024-11-09 15:13:25,978 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 526 flow [2024-11-09 15:13:25,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 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 15:13:25,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:25,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:25,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:13:25,979 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:25,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1510156599, now seen corresponding path program 1 times [2024-11-09 15:13:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:25,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747838204] [2024-11-09 15:13:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:25,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:26,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747838204] [2024-11-09 15:13:26,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747838204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:26,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390610380] [2024-11-09 15:13:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:26,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:26,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:13:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:26,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:13:26,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:26,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:26,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:13:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:26,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:13:26,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:13:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390610380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:26,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:26,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:13:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220540724] [2024-11-09 15:13:26,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:26,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:13:26,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:13:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:13:26,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 99 [2024-11-09 15:13:26,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 526 flow. Second operand has 13 states, 13 states have (on average 54.69230769230769) internal successors, (711), 13 states have internal predecessors, (711), 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 15:13:26,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:26,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 99 [2024-11-09 15:13:26,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand