./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:56:27,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:56:27,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:56:27,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:56:27,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:56:27,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:56:27,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:56:27,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:56:27,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:56:27,953 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:56:27,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:56:27,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:56:27,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:56:27,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:56:27,956 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:56:27,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:56:27,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:56:27,957 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:56:27,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:56:27,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:56:27,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:56:27,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:56:27,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:56:27,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:56:27,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:56:27,962 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:56:27,962 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:56:27,962 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:56:27,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:56:27,963 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:56:27,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:56:27,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:56:27,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:56:27,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:56:27,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:56:27,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:56:27,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:56:27,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:56:27,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:56:27,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:56:27,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:56:27,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:56:27,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:56:27,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:56:27,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-23 01:56:28,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:56:28,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:56:28,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:56:28,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:56:28,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:56:28,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-23 01:56:29,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:56:29,786 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:56:29,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-23 01:56:29,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48df6f76c/3c089403072b40dbb32bbe83e937bd44/FLAG7b5e1b784 [2024-11-23 01:56:30,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48df6f76c/3c089403072b40dbb32bbe83e937bd44 [2024-11-23 01:56:30,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:56:30,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:56:30,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:56:30,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:56:30,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:56:30,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242d846f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30, skipping insertion in model container [2024-11-23 01:56:30,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:56:30,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:56:30,392 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:56:30,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:56:30,433 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:56:30,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30 WrapperNode [2024-11-23 01:56:30,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:56:30,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:56:30,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:56:30,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:56:30,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,469 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 177 [2024-11-23 01:56:30,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:56:30,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:56:30,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:56:30,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:56:30,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,499 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-23 01:56:30,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:56:30,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:56:30,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:56:30,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:56:30,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (1/1) ... [2024-11-23 01:56:30,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:56:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:30,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:56:30,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:56:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:56:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:56:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:56:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:56:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:56:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:56:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:56:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:56:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:56:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:56:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:56:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:56:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:56:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:56:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:56:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:56:30,664 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:56:30,845 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:56:30,848 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:56:31,176 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:56:31,176 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:56:31,374 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:56:31,375 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 01:56:31,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:31 BoogieIcfgContainer [2024-11-23 01:56:31,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:56:31,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:56:31,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:56:31,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:56:31,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:30" (1/3) ... [2024-11-23 01:56:31,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87730f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:31, skipping insertion in model container [2024-11-23 01:56:31,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:30" (2/3) ... [2024-11-23 01:56:31,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87730f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:31, skipping insertion in model container [2024-11-23 01:56:31,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:31" (3/3) ... [2024-11-23 01:56:31,382 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-23 01:56:31,396 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:56:31,397 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-23 01:56:31,397 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:56:31,445 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 01:56:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2024-11-23 01:56:31,500 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2024-11-23 01:56:31,500 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 01:56:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 15/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2024-11-23 01:56:31,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2024-11-23 01:56:31,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2024-11-23 01:56:31,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:56:31,540 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;@227a31ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:56:31,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-23 01:56:31,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:56:31,547 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:56:31,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:56:31,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:31,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:56:31,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:31,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash 803296, now seen corresponding path program 1 times [2024-11-23 01:56:31,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:31,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989593605] [2024-11-23 01:56:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:31,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:31,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989593605] [2024-11-23 01:56:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989593605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:31,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:31,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:56:31,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012962657] [2024-11-23 01:56:31,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:31,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:31,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-23 01:56:31,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:31,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:31,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-23 01:56:31,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:32,496 INFO L124 PetriNetUnfolderBase]: 4000/6613 cut-off events. [2024-11-23 01:56:32,496 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-11-23 01:56:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 6613 events. 4000/6613 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42000 event pairs, 2534 based on Foata normal form. 3/4618 useless extension candidates. Maximal degree in co-relation 11334. Up to 5081 conditions per place. [2024-11-23 01:56:32,533 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 43 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2024-11-23 01:56:32,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 279 flow [2024-11-23 01:56:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-23 01:56:32,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224719101123596 [2024-11-23 01:56:32,544 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 186 transitions. [2024-11-23 01:56:32,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 279 flow [2024-11-23 01:56:32,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 270 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:32,554 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 184 flow [2024-11-23 01:56:32,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-11-23 01:56:32,559 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2024-11-23 01:56:32,559 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 184 flow [2024-11-23 01:56:32,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:32,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:32,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:56:32,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:56:32,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:32,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 24902940, now seen corresponding path program 1 times [2024-11-23 01:56:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654118583] [2024-11-23 01:56:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:32,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:32,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654118583] [2024-11-23 01:56:32,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654118583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:56:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213128212] [2024-11-23 01:56:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:32,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:32,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-23 01:56:32,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:32,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:32,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-23 01:56:32,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:33,156 INFO L124 PetriNetUnfolderBase]: 4003/6625 cut-off events. [2024-11-23 01:56:33,157 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-23 01:56:33,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11881 conditions, 6625 events. 4003/6625 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42108 event pairs, 2534 based on Foata normal form. 3/4634 useless extension candidates. Maximal degree in co-relation 11813. Up to 5094 conditions per place. [2024-11-23 01:56:33,189 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-11-23 01:56:33,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 336 flow [2024-11-23 01:56:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-23 01:56:33,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547752808988764 [2024-11-23 01:56:33,192 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 184 flow. Second operand 4 states and 195 transitions. [2024-11-23 01:56:33,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 336 flow [2024-11-23 01:56:33,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:33,195 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 250 flow [2024-11-23 01:56:33,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2024-11-23 01:56:33,196 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-23 01:56:33,196 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 250 flow [2024-11-23 01:56:33,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:33,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:33,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:56:33,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:56:33,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:33,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:33,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1145084438, now seen corresponding path program 1 times [2024-11-23 01:56:33,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:33,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862118133] [2024-11-23 01:56:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:33,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862118133] [2024-11-23 01:56:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862118133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:33,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718082384] [2024-11-23 01:56:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:33,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:33,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:33,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:33,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:56:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:33,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:33,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:33,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718082384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:33,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 01:56:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491578763] [2024-11-23 01:56:33,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:33,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:56:33,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:56:33,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:56:33,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-23 01:56:33,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:33,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-23 01:56:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:33,928 INFO L124 PetriNetUnfolderBase]: 4012/6661 cut-off events. [2024-11-23 01:56:33,929 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-23 01:56:33,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 6661 events. 4012/6661 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 42534 event pairs, 2534 based on Foata normal form. 0/4662 useless extension candidates. Maximal degree in co-relation 11827. Up to 5097 conditions per place. [2024-11-23 01:56:34,007 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2024-11-23 01:56:34,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 544 flow [2024-11-23 01:56:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:56:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:56:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2024-11-23 01:56:34,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4786516853932584 [2024-11-23 01:56:34,010 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 250 flow. Second operand 10 states and 426 transitions. [2024-11-23 01:56:34,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 544 flow [2024-11-23 01:56:34,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 544 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:56:34,015 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 494 flow [2024-11-23 01:56:34,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-11-23 01:56:34,016 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2024-11-23 01:56:34,016 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 494 flow [2024-11-23 01:56:34,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:34,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:34,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:34,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:56:34,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:34,218 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:34,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash -687557227, now seen corresponding path program 1 times [2024-11-23 01:56:34,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:34,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501871370] [2024-11-23 01:56:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:34,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:34,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501871370] [2024-11-23 01:56:34,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501871370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:34,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:34,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250176664] [2024-11-23 01:56:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:34,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:34,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-11-23 01:56:34,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:34,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:34,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-11-23 01:56:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:35,191 INFO L124 PetriNetUnfolderBase]: 7217/10894 cut-off events. [2024-11-23 01:56:35,192 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-23 01:56:35,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20679 conditions, 10894 events. 7217/10894 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 63689 event pairs, 3494 based on Foata normal form. 146/7927 useless extension candidates. Maximal degree in co-relation 20584. Up to 6976 conditions per place. [2024-11-23 01:56:35,243 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 139 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2024-11-23 01:56:35,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 173 transitions, 898 flow [2024-11-23 01:56:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-11-23 01:56:35,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2024-11-23 01:56:35,245 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 494 flow. Second operand 4 states and 253 transitions. [2024-11-23 01:56:35,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 173 transitions, 898 flow [2024-11-23 01:56:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 173 transitions, 803 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-23 01:56:35,249 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 428 flow [2024-11-23 01:56:35,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2024-11-23 01:56:35,250 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-11-23 01:56:35,250 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 428 flow [2024-11-23 01:56:35,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:35,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:35,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:35,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:56:35,251 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:35,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 160595052, now seen corresponding path program 1 times [2024-11-23 01:56:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438033190] [2024-11-23 01:56:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:35,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438033190] [2024-11-23 01:56:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438033190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870257288] [2024-11-23 01:56:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:35,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:35,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-23 01:56:35,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:35,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:35,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-23 01:56:35,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:37,108 INFO L124 PetriNetUnfolderBase]: 13551/22409 cut-off events. [2024-11-23 01:56:37,108 INFO L125 PetriNetUnfolderBase]: For 2730/2730 co-relation queries the response was YES. [2024-11-23 01:56:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42686 conditions, 22409 events. 13551/22409 cut-off events. For 2730/2730 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 170560 event pairs, 8268 based on Foata normal form. 230/16741 useless extension candidates. Maximal degree in co-relation 42578. Up to 8645 conditions per place. [2024-11-23 01:56:37,254 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 133 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2024-11-23 01:56:37,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 176 transitions, 890 flow [2024-11-23 01:56:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-11-23 01:56:37,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.601123595505618 [2024-11-23 01:56:37,260 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 428 flow. Second operand 6 states and 321 transitions. [2024-11-23 01:56:37,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 176 transitions, 890 flow [2024-11-23 01:56:37,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 176 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:56:37,266 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 482 flow [2024-11-23 01:56:37,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-11-23 01:56:37,267 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-11-23 01:56:37,267 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 482 flow [2024-11-23 01:56:37,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:37,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:37,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:37,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:56:37,268 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:37,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1245841916, now seen corresponding path program 1 times [2024-11-23 01:56:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999553216] [2024-11-23 01:56:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:37,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999553216] [2024-11-23 01:56:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999553216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:37,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:37,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686943594] [2024-11-23 01:56:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:37,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:37,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-11-23 01:56:37,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:37,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:37,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-11-23 01:56:37,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:39,514 INFO L124 PetriNetUnfolderBase]: 22204/33004 cut-off events. [2024-11-23 01:56:39,514 INFO L125 PetriNetUnfolderBase]: For 4059/4419 co-relation queries the response was YES. [2024-11-23 01:56:39,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66381 conditions, 33004 events. 22204/33004 cut-off events. For 4059/4419 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 216692 event pairs, 10634 based on Foata normal form. 448/25807 useless extension candidates. Maximal degree in co-relation 66268. Up to 21124 conditions per place. [2024-11-23 01:56:39,768 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 145 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2024-11-23 01:56:39,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 181 transitions, 926 flow [2024-11-23 01:56:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-23 01:56:39,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7050561797752809 [2024-11-23 01:56:39,770 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 482 flow. Second operand 4 states and 251 transitions. [2024-11-23 01:56:39,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 181 transitions, 926 flow [2024-11-23 01:56:39,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 181 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-23 01:56:39,777 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 508 flow [2024-11-23 01:56:39,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=508, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-11-23 01:56:39,780 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2024-11-23 01:56:39,780 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 508 flow [2024-11-23 01:56:39,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:39,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:39,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:39,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:56:39,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:39,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash 683480183, now seen corresponding path program 1 times [2024-11-23 01:56:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:39,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296081170] [2024-11-23 01:56:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:39,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:39,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296081170] [2024-11-23 01:56:39,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296081170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:39,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:39,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:56:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371530192] [2024-11-23 01:56:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:39,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:39,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-23 01:56:39,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:39,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:39,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-23 01:56:39,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:43,832 INFO L124 PetriNetUnfolderBase]: 39672/66276 cut-off events. [2024-11-23 01:56:43,833 INFO L125 PetriNetUnfolderBase]: For 18572/18644 co-relation queries the response was YES. [2024-11-23 01:56:44,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135310 conditions, 66276 events. 39672/66276 cut-off events. For 18572/18644 co-relation queries the response was YES. Maximal size of possible extension queue 2549. Compared 580345 event pairs, 24248 based on Foata normal form. 656/54034 useless extension candidates. Maximal degree in co-relation 135122. Up to 24784 conditions per place. [2024-11-23 01:56:44,714 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 162 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2024-11-23 01:56:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 202 transitions, 1145 flow [2024-11-23 01:56:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-11-23 01:56:44,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.651685393258427 [2024-11-23 01:56:44,716 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 508 flow. Second operand 5 states and 290 transitions. [2024-11-23 01:56:44,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 202 transitions, 1145 flow [2024-11-23 01:56:44,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:56:44,744 INFO L231 Difference]: Finished difference. Result has 107 places, 130 transitions, 574 flow [2024-11-23 01:56:44,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=107, PETRI_TRANSITIONS=130} [2024-11-23 01:56:44,745 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-11-23 01:56:44,745 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 574 flow [2024-11-23 01:56:44,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:44,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:44,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:44,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:56:44,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:44,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 33638896, now seen corresponding path program 1 times [2024-11-23 01:56:44,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:44,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752113784] [2024-11-23 01:56:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:44,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:44,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:44,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752113784] [2024-11-23 01:56:44,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752113784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:44,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:44,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:44,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27719401] [2024-11-23 01:56:44,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:44,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:44,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:44,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-23 01:56:44,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:44,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:44,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-23 01:56:44,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:53,090 INFO L124 PetriNetUnfolderBase]: 82740/136532 cut-off events. [2024-11-23 01:56:53,090 INFO L125 PetriNetUnfolderBase]: For 25573/25717 co-relation queries the response was YES. [2024-11-23 01:56:53,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273003 conditions, 136532 events. 82740/136532 cut-off events. For 25573/25717 co-relation queries the response was YES. Maximal size of possible extension queue 5039. Compared 1281776 event pairs, 50552 based on Foata normal form. 920/108362 useless extension candidates. Maximal degree in co-relation 272813. Up to 52400 conditions per place. [2024-11-23 01:56:54,386 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 125 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2024-11-23 01:56:54,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 173 transitions, 966 flow [2024-11-23 01:56:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2024-11-23 01:56:54,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247191011235955 [2024-11-23 01:56:54,392 INFO L175 Difference]: Start difference. First operand has 107 places, 130 transitions, 574 flow. Second operand 5 states and 278 transitions. [2024-11-23 01:56:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 173 transitions, 966 flow [2024-11-23 01:56:54,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 964 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-23 01:56:54,468 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 618 flow [2024-11-23 01:56:54,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-11-23 01:56:54,469 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2024-11-23 01:56:54,469 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 618 flow [2024-11-23 01:56:54,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:54,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:54,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:54,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:56:54,470 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:56:54,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1042806662, now seen corresponding path program 1 times [2024-11-23 01:56:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:54,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41690493] [2024-11-23 01:56:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:54,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:54,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41690493] [2024-11-23 01:56:54,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41690493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:54,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:54,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:54,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165303414] [2024-11-23 01:56:54,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:54,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:54,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:54,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:54,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:54,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-23 01:56:54,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:54,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:54,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-23 01:56:54,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:02,917 INFO L124 PetriNetUnfolderBase]: 80092/132544 cut-off events. [2024-11-23 01:57:02,917 INFO L125 PetriNetUnfolderBase]: For 33612/33828 co-relation queries the response was YES. [2024-11-23 01:57:03,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269778 conditions, 132544 events. 80092/132544 cut-off events. For 33612/33828 co-relation queries the response was YES. Maximal size of possible extension queue 4881. Compared 1242285 event pairs, 48548 based on Foata normal form. 560/106872 useless extension candidates. Maximal degree in co-relation 269581. Up to 49475 conditions per place. [2024-11-23 01:57:04,542 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 164 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-11-23 01:57:04,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 229 transitions, 1358 flow [2024-11-23 01:57:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:57:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:57:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 423 transitions. [2024-11-23 01:57:04,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5941011235955056 [2024-11-23 01:57:04,544 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 618 flow. Second operand 8 states and 423 transitions. [2024-11-23 01:57:04,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 229 transitions, 1358 flow [2024-11-23 01:57:04,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 229 transitions, 1333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:57:04,627 INFO L231 Difference]: Finished difference. Result has 123 places, 155 transitions, 906 flow [2024-11-23 01:57:04,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=123, PETRI_TRANSITIONS=155} [2024-11-23 01:57:04,628 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 44 predicate places. [2024-11-23 01:57:04,628 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 155 transitions, 906 flow [2024-11-23 01:57:04,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:04,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:04,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:04,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:57:04,629 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-23 01:57:04,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1451039184, now seen corresponding path program 1 times [2024-11-23 01:57:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754526971] [2024-11-23 01:57:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:57:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:04,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754526971] [2024-11-23 01:57:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754526971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:57:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:57:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:57:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157524276] [2024-11-23 01:57:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:57:04,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:57:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:57:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:57:04,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-11-23 01:57:04,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 155 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:04,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:04,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-11-23 01:57:04,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand