./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:45:09,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:45:09,217 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:45:09,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:45:09,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:45:09,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:45:09,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:45:09,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:45:09,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:45:09,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:45:09,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:45:09,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:45:09,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:45:09,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:45:09,266 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:45:09,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:45:09,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:45:09,267 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:45:09,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:45:09,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:45:09,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:45:09,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:45:09,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:45:09,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:45:09,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:45:09,276 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:45:09,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:45:09,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:45:09,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:45:09,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:45:09,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:45:09,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:45:09,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:45:09,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:45:09,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:09,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:45:09,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:45:09,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:45:09,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:45:09,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:45:09,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:45:09,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:45:09,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:45:09,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:45:09,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-10-13 16:45:09,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:45:09,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:45:09,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:45:09,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:45:09,559 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:45:09,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-13 16:45:11,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:45:11,273 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:45:11,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-13 16:45:11,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870ded347/ff791b2b659e48028fb4e252b33a7ee0/FLAGfced67d88 [2024-10-13 16:45:11,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870ded347/ff791b2b659e48028fb4e252b33a7ee0 [2024-10-13 16:45:11,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:45:11,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:45:11,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:11,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:45:11,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:45:11,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:11,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@747551c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11, skipping insertion in model container [2024-10-13 16:45:11,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:11,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:45:11,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:11,901 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:45:11,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:11,967 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:45:11,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11 WrapperNode [2024-10-13 16:45:11,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:11,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:11,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:45:11,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:45:11,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:11,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,032 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 229 [2024-10-13 16:45:12,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:12,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:45:12,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:45:12,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:45:12,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,091 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 16:45:12,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:45:12,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:45:12,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:45:12,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:45:12,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (1/1) ... [2024-10-13 16:45:12,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:12,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:12,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:45:12,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:45:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:45:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:45:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:45:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:45:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:45:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:45:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:45:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:45:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:45:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:45:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:45:12,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:45:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:45:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:45:12,217 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:45:12,334 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:45:12,336 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:45:12,797 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:45:12,798 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:45:13,093 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:45:13,093 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:45:13,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:13 BoogieIcfgContainer [2024-10-13 16:45:13,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:45:13,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:45:13,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:45:13,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:45:13,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:45:11" (1/3) ... [2024-10-13 16:45:13,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457d750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:13, skipping insertion in model container [2024-10-13 16:45:13,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:11" (2/3) ... [2024-10-13 16:45:13,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457d750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:13, skipping insertion in model container [2024-10-13 16:45:13,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:13" (3/3) ... [2024-10-13 16:45:13,105 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-10-13 16:45:13,122 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:45:13,122 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-13 16:45:13,122 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:45:13,186 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:45:13,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 72 transitions, 158 flow [2024-10-13 16:45:13,278 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-10-13 16:45:13,278 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:45:13,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-13 16:45:13,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 72 transitions, 158 flow [2024-10-13 16:45:13,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 68 transitions, 145 flow [2024-10-13 16:45:13,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:45:13,313 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;@24f3a3d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:45:13,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-13 16:45:13,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:45:13,319 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:45:13,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:45:13,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:13,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:45:13,321 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:13,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash 734115, now seen corresponding path program 1 times [2024-10-13 16:45:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:13,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903364466] [2024-10-13 16:45:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:13,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903364466] [2024-10-13 16:45:13,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903364466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:13,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341479064] [2024-10-13 16:45:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:13,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:13,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:13,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:13,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:13,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:13,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:13,957 INFO L124 PetriNetUnfolderBase]: 285/771 cut-off events. [2024-10-13 16:45:13,957 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-13 16:45:13,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 771 events. 285/771 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4920 event pairs, 176 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 1156. Up to 443 conditions per place. [2024-10-13 16:45:13,971 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 33 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-10-13 16:45:13,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 237 flow [2024-10-13 16:45:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-10-13 16:45:13,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-10-13 16:45:13,986 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 145 flow. Second operand 4 states and 188 transitions. [2024-10-13 16:45:13,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 237 flow [2024-10-13 16:45:13,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:13,994 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 200 flow [2024-10-13 16:45:13,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-10-13 16:45:14,002 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2024-10-13 16:45:14,003 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 200 flow [2024-10-13 16:45:14,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:14,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:14,007 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:45:14,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:45:14,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:14,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash 395907990, now seen corresponding path program 1 times [2024-10-13 16:45:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:14,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098749637] [2024-10-13 16:45:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:14,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:14,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098749637] [2024-10-13 16:45:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098749637] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:14,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138121948] [2024-10-13 16:45:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:14,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:14,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:45:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:14,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:14,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:45:14,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138121948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:14,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:45:14,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:45:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498059682] [2024-10-13 16:45:14,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:14,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:45:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:45:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:45:14,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:14,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:14,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:14,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:14,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:14,613 INFO L124 PetriNetUnfolderBase]: 285/769 cut-off events. [2024-10-13 16:45:14,613 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-13 16:45:14,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 769 events. 285/769 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4904 event pairs, 176 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1206. Up to 433 conditions per place. [2024-10-13 16:45:14,621 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 26 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-10-13 16:45:14,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 268 flow [2024-10-13 16:45:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:45:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:45:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-10-13 16:45:14,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-13 16:45:14,628 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 200 flow. Second operand 6 states and 256 transitions. [2024-10-13 16:45:14,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 268 flow [2024-10-13 16:45:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:45:14,632 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 216 flow [2024-10-13 16:45:14,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-10-13 16:45:14,633 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-13 16:45:14,634 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 216 flow [2024-10-13 16:45:14,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:14,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:14,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:45:14,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:14,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:14,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:14,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash -611753468, now seen corresponding path program 1 times [2024-10-13 16:45:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:14,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715775369] [2024-10-13 16:45:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715775369] [2024-10-13 16:45:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715775369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184046600] [2024-10-13 16:45:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:14,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:14,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:45:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:15,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:15,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184046600] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:15,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:15,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:45:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884408708] [2024-10-13 16:45:15,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:45:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:45:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:45:15,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:15,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:15,344 INFO L124 PetriNetUnfolderBase]: 291/793 cut-off events. [2024-10-13 16:45:15,344 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-13 16:45:15,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 793 events. 291/793 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5124 event pairs, 176 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 1208. Up to 444 conditions per place. [2024-10-13 16:45:15,349 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 31 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-10-13 16:45:15,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 442 flow [2024-10-13 16:45:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-10-13 16:45:15,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2024-10-13 16:45:15,353 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 10 states and 422 transitions. [2024-10-13 16:45:15,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 442 flow [2024-10-13 16:45:15,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 384 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-13 16:45:15,356 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 356 flow [2024-10-13 16:45:15,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-10-13 16:45:15,357 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-10-13 16:45:15,357 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 356 flow [2024-10-13 16:45:15,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:15,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:15,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:15,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:15,558 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,SelfDestructingSolverStorable2 [2024-10-13 16:45:15,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:15,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash -743585408, now seen corresponding path program 1 times [2024-10-13 16:45:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243950211] [2024-10-13 16:45:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243950211] [2024-10-13 16:45:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243950211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:15,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477068970] [2024-10-13 16:45:15,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:15,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-13 16:45:15,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:15,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-13 16:45:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:15,921 INFO L124 PetriNetUnfolderBase]: 550/1292 cut-off events. [2024-10-13 16:45:15,922 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-13 16:45:15,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1292 events. 550/1292 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8840 event pairs, 161 based on Foata normal form. 40/1067 useless extension candidates. Maximal degree in co-relation 2214. Up to 431 conditions per place. [2024-10-13 16:45:15,930 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 82 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-10-13 16:45:15,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 588 flow [2024-10-13 16:45:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-10-13 16:45:15,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-10-13 16:45:15,932 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 356 flow. Second operand 4 states and 202 transitions. [2024-10-13 16:45:15,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 588 flow [2024-10-13 16:45:15,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 564 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:15,937 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 366 flow [2024-10-13 16:45:15,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-10-13 16:45:15,938 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-10-13 16:45:15,938 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 366 flow [2024-10-13 16:45:15,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:15,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:15,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:15,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:45:15,939 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:15,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1576310376, now seen corresponding path program 1 times [2024-10-13 16:45:15,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:15,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807856727] [2024-10-13 16:45:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807856727] [2024-10-13 16:45:16,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807856727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:16,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:16,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717267502] [2024-10-13 16:45:16,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:16,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:45:16,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:16,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:45:16,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:45:16,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 72 [2024-10-13 16:45:16,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:16,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:16,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 72 [2024-10-13 16:45:16,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,189 INFO L124 PetriNetUnfolderBase]: 359/1011 cut-off events. [2024-10-13 16:45:16,189 INFO L125 PetriNetUnfolderBase]: For 255/279 co-relation queries the response was YES. [2024-10-13 16:45:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 1011 events. 359/1011 cut-off events. For 255/279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6949 event pairs, 228 based on Foata normal form. 15/830 useless extension candidates. Maximal degree in co-relation 1792. Up to 563 conditions per place. [2024-10-13 16:45:16,199 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 47 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-10-13 16:45:16,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 465 flow [2024-10-13 16:45:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:45:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:45:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-13 16:45:16,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-13 16:45:16,201 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 366 flow. Second operand 3 states and 156 transitions. [2024-10-13 16:45:16,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 465 flow [2024-10-13 16:45:16,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:16,208 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 364 flow [2024-10-13 16:45:16,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-10-13 16:45:16,211 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-10-13 16:45:16,211 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 364 flow [2024-10-13 16:45:16,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:16,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:16,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:16,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:45:16,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:16,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1173233204, now seen corresponding path program 1 times [2024-10-13 16:45:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723312611] [2024-10-13 16:45:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723312611] [2024-10-13 16:45:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723312611] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451964152] [2024-10-13 16:45:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:16,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:16,341 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) [2024-10-13 16:45:16,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:45:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:16,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:45:16,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:16,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451964152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:16,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:45:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654533537] [2024-10-13 16:45:16,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:16,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:45:16,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:45:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:45:16,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:16,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:16,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:16,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:16,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,764 INFO L124 PetriNetUnfolderBase]: 355/1007 cut-off events. [2024-10-13 16:45:16,764 INFO L125 PetriNetUnfolderBase]: For 263/287 co-relation queries the response was YES. [2024-10-13 16:45:16,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 1007 events. 355/1007 cut-off events. For 263/287 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6850 event pairs, 228 based on Foata normal form. 17/829 useless extension candidates. Maximal degree in co-relation 1780. Up to 549 conditions per place. [2024-10-13 16:45:16,770 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 31 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2024-10-13 16:45:16,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 444 flow [2024-10-13 16:45:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:45:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:45:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2024-10-13 16:45:16,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2024-10-13 16:45:16,772 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 364 flow. Second operand 7 states and 298 transitions. [2024-10-13 16:45:16,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 444 flow [2024-10-13 16:45:16,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:16,775 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 372 flow [2024-10-13 16:45:16,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-10-13 16:45:16,776 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-10-13 16:45:16,777 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 372 flow [2024-10-13 16:45:16,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:16,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:16,777 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:45:16,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:45:16,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:16,982 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:16,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1859144361, now seen corresponding path program 2 times [2024-10-13 16:45:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:16,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562350751] [2024-10-13 16:45:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:16,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562350751] [2024-10-13 16:45:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562350751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097425839] [2024-10-13 16:45:17,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:17,189 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) [2024-10-13 16:45:17,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:45:17,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:17,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:17,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:17,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:45:17,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:45:17,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097425839] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:17,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:17,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-10-13 16:45:17,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581582556] [2024-10-13 16:45:17,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:17,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:45:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:45:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:45:17,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:17,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 372 flow. Second operand has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:17,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:17,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:17,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:17,741 INFO L124 PetriNetUnfolderBase]: 357/1009 cut-off events. [2024-10-13 16:45:17,741 INFO L125 PetriNetUnfolderBase]: For 289/313 co-relation queries the response was YES. [2024-10-13 16:45:17,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1009 events. 357/1009 cut-off events. For 289/313 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6855 event pairs, 228 based on Foata normal form. 15/828 useless extension candidates. Maximal degree in co-relation 1788. Up to 544 conditions per place. [2024-10-13 16:45:17,749 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 25 selfloop transitions, 29 changer transitions 0/88 dead transitions. [2024-10-13 16:45:17,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 488 flow [2024-10-13 16:45:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:45:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:45:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 522 transitions. [2024-10-13 16:45:17,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-10-13 16:45:17,751 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 372 flow. Second operand 13 states and 522 transitions. [2024-10-13 16:45:17,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 488 flow [2024-10-13 16:45:17,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 450 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-13 16:45:17,754 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 400 flow [2024-10-13 16:45:17,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-13 16:45:17,755 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-10-13 16:45:17,755 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 400 flow [2024-10-13 16:45:17,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:17,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:17,756 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:17,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:45:17,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:17,957 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:17,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 219563508, now seen corresponding path program 2 times [2024-10-13 16:45:17,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459832991] [2024-10-13 16:45:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:45:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459832991] [2024-10-13 16:45:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459832991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:18,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317236360] [2024-10-13 16:45:18,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:18,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:18,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:18,136 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) [2024-10-13 16:45:18,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:45:18,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:45:18,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:18,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:45:18,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:45:18,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:45:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317236360] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:18,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:45:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488635416] [2024-10-13 16:45:18,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:18,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:45:18,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:45:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:45:18,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:18,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 400 flow. Second operand has 18 states, 18 states have (on average 37.44444444444444) internal successors, (674), 18 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:18,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:18,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:18,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:18,785 INFO L124 PetriNetUnfolderBase]: 353/1005 cut-off events. [2024-10-13 16:45:18,786 INFO L125 PetriNetUnfolderBase]: For 285/309 co-relation queries the response was YES. [2024-10-13 16:45:18,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1005 events. 353/1005 cut-off events. For 285/309 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6795 event pairs, 228 based on Foata normal form. 15/825 useless extension candidates. Maximal degree in co-relation 1713. Up to 544 conditions per place. [2024-10-13 16:45:18,792 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 28 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2024-10-13 16:45:18,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 84 transitions, 470 flow [2024-10-13 16:45:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 16:45:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 16:45:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2024-10-13 16:45:18,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2024-10-13 16:45:18,795 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 400 flow. Second operand 11 states and 448 transitions. [2024-10-13 16:45:18,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 84 transitions, 470 flow [2024-10-13 16:45:18,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 350 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-10-13 16:45:18,798 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 294 flow [2024-10-13 16:45:18,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=294, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2024-10-13 16:45:18,799 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-10-13 16:45:18,800 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 294 flow [2024-10-13 16:45:18,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 37.44444444444444) internal successors, (674), 18 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:18,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:18,800 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:18,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:45:19,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:19,001 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:19,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1007424076, now seen corresponding path program 3 times [2024-10-13 16:45:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:19,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016604836] [2024-10-13 16:45:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 16:45:20,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:20,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016604836] [2024-10-13 16:45:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016604836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:20,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405535585] [2024-10-13 16:45:20,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:45:20,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:20,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:20,213 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:20,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:45:20,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-13 16:45:20,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:20,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 16:45:20,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:20,409 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 [2024-10-13 16:45:20,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 16:45:20,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-13 16:45:20,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 16:45:20,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-13 16:45:20,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 16:45:20,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-13 16:45:20,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 16:45:20,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-13 16:45:20,748 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 [2024-10-13 16:45:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 16:45:20,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:21,485 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 21 treesize of output 19 [2024-10-13 16:45:21,490 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 98 treesize of output 94 [2024-10-13 16:45:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-13 16:45:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405535585] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:21,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 33 [2024-10-13 16:45:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224819580] [2024-10-13 16:45:21,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:21,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 16:45:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 16:45:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 16:45:21,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 72 [2024-10-13 16:45:21,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 294 flow. Second operand has 34 states, 34 states have (on average 34.294117647058826) internal successors, (1166), 34 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:21,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:21,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 72 [2024-10-13 16:45:21,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:22,702 INFO L124 PetriNetUnfolderBase]: 897/2326 cut-off events. [2024-10-13 16:45:22,702 INFO L125 PetriNetUnfolderBase]: For 536/540 co-relation queries the response was YES. [2024-10-13 16:45:22,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2326 events. 897/2326 cut-off events. For 536/540 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17219 event pairs, 207 based on Foata normal form. 4/1997 useless extension candidates. Maximal degree in co-relation 4304. Up to 471 conditions per place. [2024-10-13 16:45:22,717 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 80 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2024-10-13 16:45:22,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 147 transitions, 681 flow [2024-10-13 16:45:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:45:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:45:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 673 transitions. [2024-10-13 16:45:22,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5498366013071896 [2024-10-13 16:45:22,720 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 294 flow. Second operand 17 states and 673 transitions. [2024-10-13 16:45:22,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 147 transitions, 681 flow [2024-10-13 16:45:22,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 147 transitions, 637 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-13 16:45:22,725 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 382 flow [2024-10-13 16:45:22,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=382, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-10-13 16:45:22,726 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2024-10-13 16:45:22,726 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 382 flow [2024-10-13 16:45:22,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 34.294117647058826) internal successors, (1166), 34 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:22,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:22,727 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:22,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:45:22,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:22,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:22,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1165406264, now seen corresponding path program 1 times [2024-10-13 16:45:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975664657] [2024-10-13 16:45:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 16:45:23,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:23,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975664657] [2024-10-13 16:45:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975664657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094569355] [2024-10-13 16:45:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:23,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:23,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:23,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:23,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:45:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:23,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-13 16:45:23,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:24,018 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 [2024-10-13 16:45:24,083 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:24,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-13 16:45:24,153 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:24,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-13 16:45:24,222 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-13 16:45:24,291 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:24,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-13 16:45:24,363 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 [2024-10-13 16:45:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 16:45:24,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:25,116 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 23 treesize of output 21 [2024-10-13 16:45:25,122 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 52 treesize of output 50 [2024-10-13 16:45:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-13 16:45:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094569355] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:25,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:25,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 34 [2024-10-13 16:45:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787833328] [2024-10-13 16:45:25,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:25,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-13 16:45:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-13 16:45:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-10-13 16:45:25,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 72 [2024-10-13 16:45:25,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 382 flow. Second operand has 35 states, 35 states have (on average 32.34285714285714) internal successors, (1132), 35 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:25,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:25,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 72 [2024-10-13 16:45:25,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:26,503 INFO L124 PetriNetUnfolderBase]: 1105/2452 cut-off events. [2024-10-13 16:45:26,504 INFO L125 PetriNetUnfolderBase]: For 1440/1448 co-relation queries the response was YES. [2024-10-13 16:45:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5357 conditions, 2452 events. 1105/2452 cut-off events. For 1440/1448 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16695 event pairs, 308 based on Foata normal form. 28/2177 useless extension candidates. Maximal degree in co-relation 2637. Up to 625 conditions per place. [2024-10-13 16:45:26,520 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 84 selfloop transitions, 35 changer transitions 0/148 dead transitions. [2024-10-13 16:45:26,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 148 transitions, 749 flow [2024-10-13 16:45:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:45:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:45:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-10-13 16:45:26,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-10-13 16:45:26,524 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 382 flow. Second operand 17 states and 639 transitions. [2024-10-13 16:45:26,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 148 transitions, 749 flow [2024-10-13 16:45:26,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 698 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-10-13 16:45:26,531 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 423 flow [2024-10-13 16:45:26,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=423, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-10-13 16:45:26,533 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 35 predicate places. [2024-10-13 16:45:26,533 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 423 flow [2024-10-13 16:45:26,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 32.34285714285714) internal successors, (1132), 35 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:26,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:26,535 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:26,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:26,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:26,740 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:26,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1861064877, now seen corresponding path program 1 times [2024-10-13 16:45:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:26,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190303379] [2024-10-13 16:45:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:26,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190303379] [2024-10-13 16:45:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190303379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:26,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:26,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347032753] [2024-10-13 16:45:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:26,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:26,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-13 16:45:26,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-13 16:45:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:27,207 INFO L124 PetriNetUnfolderBase]: 1369/3225 cut-off events. [2024-10-13 16:45:27,207 INFO L125 PetriNetUnfolderBase]: For 3471/3552 co-relation queries the response was YES. [2024-10-13 16:45:27,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 3225 events. 1369/3225 cut-off events. For 3471/3552 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24496 event pairs, 484 based on Foata normal form. 149/2854 useless extension candidates. Maximal degree in co-relation 6487. Up to 1123 conditions per place. [2024-10-13 16:45:27,233 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 101 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-10-13 16:45:27,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 899 flow [2024-10-13 16:45:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-10-13 16:45:27,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-10-13 16:45:27,235 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 423 flow. Second operand 4 states and 200 transitions. [2024-10-13 16:45:27,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 899 flow [2024-10-13 16:45:27,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 815 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-10-13 16:45:27,246 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 395 flow [2024-10-13 16:45:27,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-10-13 16:45:27,247 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-10-13 16:45:27,247 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 395 flow [2024-10-13 16:45:27,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:27,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:27,248 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:27,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:45:27,248 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-13 16:45:27,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1858435522, now seen corresponding path program 1 times [2024-10-13 16:45:27,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:27,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424513196] [2024-10-13 16:45:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:45:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424513196] [2024-10-13 16:45:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424513196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186602358] [2024-10-13 16:45:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:28,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:28,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:28,120 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:28,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:45:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:28,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-13 16:45:28,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:28,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-13 16:45:28,274 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 [2024-10-13 16:45:28,339 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:28,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 16:45:28,417 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:28,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 16:45:28,497 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:28,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 16:45:28,575 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 16:45:28,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 16:45:28,613 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:45:28,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:45:28,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:28,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:28,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:28,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:28,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:28,773 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 [2024-10-13 16:45:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:45:28,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:28,889 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_302 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_302) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false