./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-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.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:50:37,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:50:37,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:50:37,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:50:37,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:50:37,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:50:37,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:50:37,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:50:37,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:50:37,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:50:37,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:50:37,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:50:37,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:50:37,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:50:37,447 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:50:37,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:50:37,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:50:37,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:50:37,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:50:37,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:50:37,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:50:37,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:50:37,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:50:37,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:50:37,453 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:50:37,453 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:50:37,454 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:50:37,454 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:50:37,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:50:37,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:50:37,454 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:50:37,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:50:37,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:50:37,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:50:37,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:50:37,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:50:37,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:50:37,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:50:37,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:50:37,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:50:37,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:50:37,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:50:37,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:50:37,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:50:37,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-11-17 07:50:37,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:50:37,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:50:37,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:50:37,767 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:50:37,768 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:50:37,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-17 07:50:39,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:50:39,436 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:50:39,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-17 07:50:39,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c6c64fe/cf16e9c2483f4b8989ab2832256ffa40/FLAG06669615c [2024-11-17 07:50:39,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c6c64fe/cf16e9c2483f4b8989ab2832256ffa40 [2024-11-17 07:50:39,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:50:39,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:50:39,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:50:39,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:50:39,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:50:39,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:39,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b60cd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39, skipping insertion in model container [2024-11-17 07:50:39,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:39,519 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:50:39,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:50:39,842 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:50:39,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:50:39,930 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:50:39,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39 WrapperNode [2024-11-17 07:50:39,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:50:39,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:50:39,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:50:39,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:50:39,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:39,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:39,984 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 225 [2024-11-17 07:50:39,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:50:39,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:50:39,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:50:39,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:50:39,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:39,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,031 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]. [2024-11-17 07:50:40,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,041 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:50:40,061 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:50:40,061 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:50:40,061 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:50:40,062 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (1/1) ... [2024-11-17 07:50:40,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:50:40,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:40,096 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) [2024-11-17 07:50:40,098 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 [2024-11-17 07:50:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:50:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:50:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:50:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:50:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:50:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:50:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:50:40,143 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:50:40,263 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:50:40,266 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:50:40,681 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:50:40,681 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:50:41,008 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:50:41,009 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:50:41,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:50:41 BoogieIcfgContainer [2024-11-17 07:50:41,009 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:50:41,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:50:41,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:50:41,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:50:41,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:50:39" (1/3) ... [2024-11-17 07:50:41,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4412e2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:50:41, skipping insertion in model container [2024-11-17 07:50:41,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:50:39" (2/3) ... [2024-11-17 07:50:41,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4412e2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:50:41, skipping insertion in model container [2024-11-17 07:50:41,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:50:41" (3/3) ... [2024-11-17 07:50:41,020 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-11-17 07:50:41,039 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:50:41,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-17 07:50:41,039 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:50:41,118 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:50:41,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 84 transitions, 182 flow [2024-11-17 07:50:41,209 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-17 07:50:41,209 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:50:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 12/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-11-17 07:50:41,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 84 transitions, 182 flow [2024-11-17 07:50:41,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 80 transitions, 169 flow [2024-11-17 07:50:41,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:50:41,244 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;@12b99ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:50:41,244 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-17 07:50:41,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:50:41,248 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:50:41,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:50:41,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:41,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:50:41,249 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:41,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash 20208675, now seen corresponding path program 1 times [2024-11-17 07:50:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:41,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437998398] [2024-11-17 07:50:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:41,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:41,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437998398] [2024-11-17 07:50:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437998398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:41,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:41,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:50:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913038603] [2024-11-17 07:50:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:41,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:50:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:50:41,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:50:41,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-17 07:50:41,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-17 07:50:41,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:41,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-17 07:50:41,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:41,883 INFO L124 PetriNetUnfolderBase]: 311/685 cut-off events. [2024-11-17 07:50:41,883 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-17 07:50:41,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 685 events. 311/685 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3962 event pairs, 196 based on Foata normal form. 43/580 useless extension candidates. Maximal degree in co-relation 1108. Up to 489 conditions per place. [2024-11-17 07:50:41,891 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 33 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-11-17 07:50:41,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 82 transitions, 253 flow [2024-11-17 07:50:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:50:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:50:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-17 07:50:41,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6726190476190477 [2024-11-17 07:50:41,909 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 169 flow. Second operand 4 states and 226 transitions. [2024-11-17 07:50:41,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 82 transitions, 253 flow [2024-11-17 07:50:41,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:50:41,920 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 216 flow [2024-11-17 07:50:41,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-11-17 07:50:41,929 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-17 07:50:41,930 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 216 flow [2024-11-17 07:50:41,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-17 07:50:41,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:41,930 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:50:41,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:50:41,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:41,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1519924175, now seen corresponding path program 1 times [2024-11-17 07:50:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:41,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247660088] [2024-11-17 07:50:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247660088] [2024-11-17 07:50:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247660088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475904549] [2024-11-17 07:50:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:42,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:42,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:42,154 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) [2024-11-17 07:50:42,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:50:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:42,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:50:42,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:42,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:50:42,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475904549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:42,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:50:42,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:50:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665624356] [2024-11-17 07:50:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:42,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:50:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:50:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:50:42,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-17 07:50:42,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-17 07:50:42,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:42,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-17 07:50:42,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:42,573 INFO L124 PetriNetUnfolderBase]: 311/683 cut-off events. [2024-11-17 07:50:42,574 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 07:50:42,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 683 events. 311/683 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3905 event pairs, 196 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 1166. Up to 479 conditions per place. [2024-11-17 07:50:42,581 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 26 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-11-17 07:50:42,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 284 flow [2024-11-17 07:50:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:50:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:50:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2024-11-17 07:50:42,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-17 07:50:42,585 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 216 flow. Second operand 6 states and 304 transitions. [2024-11-17 07:50:42,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 284 flow [2024-11-17 07:50:42,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:50:42,592 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 232 flow [2024-11-17 07:50:42,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-17 07:50:42,593 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-17 07:50:42,593 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 232 flow [2024-11-17 07:50:42,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-17 07:50:42,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:42,594 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:50:42,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:50:42,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:42,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:42,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -126990279, now seen corresponding path program 1 times [2024-11-17 07:50:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:42,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607627479] [2024-11-17 07:50:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:42,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:42,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607627479] [2024-11-17 07:50:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607627479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885288654] [2024-11-17 07:50:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:42,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:42,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:42,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:42,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:50:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:42,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:50:42,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:43,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885288654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:43,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:43,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:50:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878894344] [2024-11-17 07:50:43,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:43,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:50:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:50:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:50:43,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-17 07:50:43,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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) [2024-11-17 07:50:43,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:43,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-17 07:50:43,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:43,436 INFO L124 PetriNetUnfolderBase]: 317/719 cut-off events. [2024-11-17 07:50:43,436 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-17 07:50:43,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 719 events. 317/719 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4254 event pairs, 196 based on Foata normal form. 6/579 useless extension candidates. Maximal degree in co-relation 1168. Up to 490 conditions per place. [2024-11-17 07:50:43,444 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 31 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-11-17 07:50:43,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 458 flow [2024-11-17 07:50:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:50:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:50:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 502 transitions. [2024-11-17 07:50:43,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5976190476190476 [2024-11-17 07:50:43,450 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 232 flow. Second operand 10 states and 502 transitions. [2024-11-17 07:50:43,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 458 flow [2024-11-17 07:50:43,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 400 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-17 07:50:43,456 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 372 flow [2024-11-17 07:50:43,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2024-11-17 07:50:43,457 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2024-11-17 07:50:43,457 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 372 flow [2024-11-17 07:50:43,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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) [2024-11-17 07:50:43,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:43,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:43,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:50:43,662 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 [2024-11-17 07:50:43,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:43,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1050763332, now seen corresponding path program 1 times [2024-11-17 07:50:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:43,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405069002] [2024-11-17 07:50:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:43,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405069002] [2024-11-17 07:50:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405069002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:43,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:50:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646442364] [2024-11-17 07:50:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:43,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:50:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:50:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:50:43,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-17 07:50:43,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-17 07:50:43,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:43,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-17 07:50:43,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:44,019 INFO L124 PetriNetUnfolderBase]: 573/1233 cut-off events. [2024-11-17 07:50:44,019 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-11-17 07:50:44,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 1233 events. 573/1233 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8023 event pairs, 176 based on Foata normal form. 40/1048 useless extension candidates. Maximal degree in co-relation 2193. Up to 467 conditions per place. [2024-11-17 07:50:44,028 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 82 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2024-11-17 07:50:44,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 125 transitions, 604 flow [2024-11-17 07:50:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:50:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:50:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-17 07:50:44,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-11-17 07:50:44,030 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 372 flow. Second operand 4 states and 234 transitions. [2024-11-17 07:50:44,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 125 transitions, 604 flow [2024-11-17 07:50:44,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 580 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-17 07:50:44,034 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 382 flow [2024-11-17 07:50:44,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2024-11-17 07:50:44,035 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2024-11-17 07:50:44,035 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 382 flow [2024-11-17 07:50:44,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-17 07:50:44,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:44,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:44,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:50:44,036 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:44,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1786075711, now seen corresponding path program 1 times [2024-11-17 07:50:44,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:44,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094116100] [2024-11-17 07:50:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:44,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:44,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094116100] [2024-11-17 07:50:44,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094116100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:44,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:44,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:50:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711486549] [2024-11-17 07:50:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:44,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:50:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:50:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:50:44,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 84 [2024-11-17 07:50:44,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-17 07:50:44,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:44,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 84 [2024-11-17 07:50:44,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:44,289 INFO L124 PetriNetUnfolderBase]: 383/948 cut-off events. [2024-11-17 07:50:44,290 INFO L125 PetriNetUnfolderBase]: For 328/359 co-relation queries the response was YES. [2024-11-17 07:50:44,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 948 events. 383/948 cut-off events. For 328/359 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6113 event pairs, 249 based on Foata normal form. 18/778 useless extension candidates. Maximal degree in co-relation 1788. Up to 615 conditions per place. [2024-11-17 07:50:44,299 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-17 07:50:44,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 485 flow [2024-11-17 07:50:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:50:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:50:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-17 07:50:44,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2024-11-17 07:50:44,302 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 382 flow. Second operand 3 states and 176 transitions. [2024-11-17 07:50:44,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 485 flow [2024-11-17 07:50:44,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:50:44,308 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 391 flow [2024-11-17 07:50:44,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2024-11-17 07:50:44,312 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2024-11-17 07:50:44,312 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 391 flow [2024-11-17 07:50:44,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-17 07:50:44,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:44,314 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:50:44,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:50:44,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:44,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1501207115, now seen corresponding path program 2 times [2024-11-17 07:50:44,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331435408] [2024-11-17 07:50:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331435408] [2024-11-17 07:50:44,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331435408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165239247] [2024-11-17 07:50:44,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:50:44,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:44,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:44,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:50:44,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:50:44,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:50:44,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:50:44,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:50:44,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:50:44,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165239247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:44,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:44,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-11-17 07:50:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392349816] [2024-11-17 07:50:44,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:44,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:50:44,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:50:44,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:50:44,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-17 07:50:44,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 391 flow. Second operand has 15 states, 15 states have (on average 43.333333333333336) internal successors, (650), 15 states have internal predecessors, (650), 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) [2024-11-17 07:50:44,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:44,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-17 07:50:44,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:45,163 INFO L124 PetriNetUnfolderBase]: 385/954 cut-off events. [2024-11-17 07:50:45,164 INFO L125 PetriNetUnfolderBase]: For 364/395 co-relation queries the response was YES. [2024-11-17 07:50:45,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 954 events. 385/954 cut-off events. For 364/395 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6154 event pairs, 249 based on Foata normal form. 18/784 useless extension candidates. Maximal degree in co-relation 1798. Up to 590 conditions per place. [2024-11-17 07:50:45,171 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 35 selfloop transitions, 33 changer transitions 0/108 dead transitions. [2024-11-17 07:50:45,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 564 flow [2024-11-17 07:50:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 07:50:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 07:50:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 614 transitions. [2024-11-17 07:50:45,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5622710622710623 [2024-11-17 07:50:45,174 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 391 flow. Second operand 13 states and 614 transitions. [2024-11-17 07:50:45,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 564 flow [2024-11-17 07:50:45,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 528 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-17 07:50:45,180 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 426 flow [2024-11-17 07:50:45,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=426, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2024-11-17 07:50:45,183 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 22 predicate places. [2024-11-17 07:50:45,183 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 426 flow [2024-11-17 07:50:45,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.333333333333336) internal successors, (650), 15 states have internal predecessors, (650), 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) [2024-11-17 07:50:45,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:45,184 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:45,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:50:45,388 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 [2024-11-17 07:50:45,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:45,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1184739060, now seen corresponding path program 1 times [2024-11-17 07:50:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148865712] [2024-11-17 07:50:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:50:45,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148865712] [2024-11-17 07:50:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148865712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988064460] [2024-11-17 07:50:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:45,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:45,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:45,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:50:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:45,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:50:45,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:50:45,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:50:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988064460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:45,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:50:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817677773] [2024-11-17 07:50:45,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:45,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 07:50:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 07:50:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-17 07:50:45,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-17 07:50:45,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 426 flow. Second operand has 11 states, 11 states have (on average 43.81818181818182) internal successors, (482), 11 states have internal predecessors, (482), 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) [2024-11-17 07:50:45,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:45,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-17 07:50:45,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:45,925 INFO L124 PetriNetUnfolderBase]: 381/946 cut-off events. [2024-11-17 07:50:45,926 INFO L125 PetriNetUnfolderBase]: For 372/403 co-relation queries the response was YES. [2024-11-17 07:50:45,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 946 events. 381/946 cut-off events. For 372/403 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5955 event pairs, 249 based on Foata normal form. 20/778 useless extension candidates. Maximal degree in co-relation 1689. Up to 600 conditions per place. [2024-11-17 07:50:45,932 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 32 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-11-17 07:50:45,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 508 flow [2024-11-17 07:50:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:50:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:50:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-17 07:50:45,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-17 07:50:45,934 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 426 flow. Second operand 7 states and 340 transitions. [2024-11-17 07:50:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 508 flow [2024-11-17 07:50:45,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 402 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-17 07:50:45,938 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 364 flow [2024-11-17 07:50:45,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-11-17 07:50:45,939 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2024-11-17 07:50:45,939 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 364 flow [2024-11-17 07:50:45,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 43.81818181818182) internal successors, (482), 11 states have internal predecessors, (482), 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) [2024-11-17 07:50:45,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:45,940 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:45,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:50:46,140 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 [2024-11-17 07:50:46,141 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:46,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1485525210, now seen corresponding path program 2 times [2024-11-17 07:50:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322873870] [2024-11-17 07:50:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:50:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322873870] [2024-11-17 07:50:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322873870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612825616] [2024-11-17 07:50:46,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:50:46,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:46,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:46,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:46,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:50:46,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:50:46,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:50:46,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:50:46,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:50:46,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:50:46,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612825616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:46,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:46,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-17 07:50:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56436259] [2024-11-17 07:50:46,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:46,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:50:46,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:50:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:50:46,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-17 07:50:46,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 364 flow. Second operand has 18 states, 18 states have (on average 43.55555555555556) internal successors, (784), 18 states have internal predecessors, (784), 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) [2024-11-17 07:50:46,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:46,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-17 07:50:46,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:47,021 INFO L124 PetriNetUnfolderBase]: 377/938 cut-off events. [2024-11-17 07:50:47,022 INFO L125 PetriNetUnfolderBase]: For 353/384 co-relation queries the response was YES. [2024-11-17 07:50:47,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 938 events. 377/938 cut-off events. For 353/384 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5871 event pairs, 249 based on Foata normal form. 20/770 useless extension candidates. Maximal degree in co-relation 1693. Up to 590 conditions per place. [2024-11-17 07:50:47,028 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 30 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-11-17 07:50:47,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 448 flow [2024-11-17 07:50:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:50:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:50:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 516 transitions. [2024-11-17 07:50:47,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-17 07:50:47,032 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 364 flow. Second operand 11 states and 516 transitions. [2024-11-17 07:50:47,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 448 flow [2024-11-17 07:50:47,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 404 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 07:50:47,036 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 362 flow [2024-11-17 07:50:47,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=362, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2024-11-17 07:50:47,039 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2024-11-17 07:50:47,040 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 362 flow [2024-11-17 07:50:47,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.55555555555556) internal successors, (784), 18 states have internal predecessors, (784), 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) [2024-11-17 07:50:47,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:47,040 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:47,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:50:47,244 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 [2024-11-17 07:50:47,245 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:47,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1555389632, now seen corresponding path program 3 times [2024-11-17 07:50:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611903826] [2024-11-17 07:50:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:50:48,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611903826] [2024-11-17 07:50:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611903826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218156199] [2024-11-17 07:50:48,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:50:48,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:48,475 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) [2024-11-17 07:50:48,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:50:48,601 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-17 07:50:48,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:50:48,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-17 07:50:48,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:48,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:50:48,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:50:48,770 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 [2024-11-17 07:50:48,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:50:48,855 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 [2024-11-17 07:50:48,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:50:48,950 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 [2024-11-17 07:50:49,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:50:49,039 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 [2024-11-17 07:50:49,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 07:50:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:50:49,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:49,848 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 [2024-11-17 07:50:49,855 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 44 treesize of output 42 [2024-11-17 07:50:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-17 07:50:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218156199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:49,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 9] total 33 [2024-11-17 07:50:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54899576] [2024-11-17 07:50:49,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:49,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 07:50:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 07:50:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 07:50:50,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-17 07:50:50,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 362 flow. Second operand has 34 states, 34 states have (on average 40.38235294117647) internal successors, (1373), 34 states have internal predecessors, (1373), 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) [2024-11-17 07:50:50,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:50,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-17 07:50:50,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:51,231 INFO L124 PetriNetUnfolderBase]: 867/2217 cut-off events. [2024-11-17 07:50:51,231 INFO L125 PetriNetUnfolderBase]: For 647/661 co-relation queries the response was YES. [2024-11-17 07:50:51,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 2217 events. 867/2217 cut-off events. For 647/661 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16135 event pairs, 198 based on Foata normal form. 14/1915 useless extension candidates. Maximal degree in co-relation 4067. Up to 442 conditions per place. [2024-11-17 07:50:51,248 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 82 selfloop transitions, 35 changer transitions 0/155 dead transitions. [2024-11-17 07:50:51,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 155 transitions, 753 flow [2024-11-17 07:50:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:50:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:50:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 777 transitions. [2024-11-17 07:50:51,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-11-17 07:50:51,252 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 362 flow. Second operand 17 states and 777 transitions. [2024-11-17 07:50:51,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 155 transitions, 753 flow [2024-11-17 07:50:51,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 155 transitions, 709 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-17 07:50:51,259 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 450 flow [2024-11-17 07:50:51,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=450, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2024-11-17 07:50:51,261 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2024-11-17 07:50:51,261 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 450 flow [2024-11-17 07:50:51,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 40.38235294117647) internal successors, (1373), 34 states have internal predecessors, (1373), 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) [2024-11-17 07:50:51,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:51,262 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:51,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:50:51,467 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 [2024-11-17 07:50:51,467 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:51,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash -972468449, now seen corresponding path program 1 times [2024-11-17 07:50:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163805786] [2024-11-17 07:50:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:50:52,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163805786] [2024-11-17 07:50:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163805786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133967968] [2024-11-17 07:50:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:52,568 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) [2024-11-17 07:50:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:50:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:52,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-17 07:50:52,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:52,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:50:52,777 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:52,777 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 [2024-11-17 07:50:52,846 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:52,847 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 [2024-11-17 07:50:52,918 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:52,919 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 [2024-11-17 07:50:52,991 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:52,991 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 [2024-11-17 07:50:53,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 07:50:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:50:53,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:53,931 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 [2024-11-17 07:50:53,936 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 [2024-11-17 07:50:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-17 07:50:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133967968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:53,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:53,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 9] total 35 [2024-11-17 07:50:53,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069194061] [2024-11-17 07:50:53,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:53,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-17 07:50:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-17 07:50:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2024-11-17 07:50:54,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:50:54,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 450 flow. Second operand has 36 states, 36 states have (on average 38.416666666666664) internal successors, (1383), 36 states have internal predecessors, (1383), 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) [2024-11-17 07:50:54,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:54,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:50:54,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:55,242 INFO L124 PetriNetUnfolderBase]: 1066/2479 cut-off events. [2024-11-17 07:50:55,243 INFO L125 PetriNetUnfolderBase]: For 1647/1660 co-relation queries the response was YES. [2024-11-17 07:50:55,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2479 events. 1066/2479 cut-off events. For 1647/1660 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17518 event pairs, 268 based on Foata normal form. 33/2190 useless extension candidates. Maximal degree in co-relation 5136. Up to 594 conditions per place. [2024-11-17 07:50:55,260 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 86 selfloop transitions, 35 changer transitions 0/156 dead transitions. [2024-11-17 07:50:55,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 821 flow [2024-11-17 07:50:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:50:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:50:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 743 transitions. [2024-11-17 07:50:55,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5203081232492998 [2024-11-17 07:50:55,264 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 450 flow. Second operand 17 states and 743 transitions. [2024-11-17 07:50:55,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 821 flow [2024-11-17 07:50:55,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 770 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-17 07:50:55,269 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 491 flow [2024-11-17 07:50:55,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=491, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-11-17 07:50:55,271 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 40 predicate places. [2024-11-17 07:50:55,271 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 491 flow [2024-11-17 07:50:55,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 38.416666666666664) internal successors, (1383), 36 states have internal predecessors, (1383), 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) [2024-11-17 07:50:55,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:55,273 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:55,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:50:55,477 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 [2024-11-17 07:50:55,478 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:55,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash -59118043, now seen corresponding path program 1 times [2024-11-17 07:50:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:55,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881829363] [2024-11-17 07:50:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-17 07:50:55,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881829363] [2024-11-17 07:50:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881829363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:55,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:55,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:50:55,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855456311] [2024-11-17 07:50:55,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:55,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:50:55,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:50:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:50:55,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-17 07:50:55,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-17 07:50:55,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:55,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-17 07:50:55,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:55,988 INFO L124 PetriNetUnfolderBase]: 1371/3009 cut-off events. [2024-11-17 07:50:55,988 INFO L125 PetriNetUnfolderBase]: For 3634/3786 co-relation queries the response was YES. [2024-11-17 07:50:55,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 3009 events. 1371/3009 cut-off events. For 3634/3786 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22152 event pairs, 488 based on Foata normal form. 184/2652 useless extension candidates. Maximal degree in co-relation 6857. Up to 1134 conditions per place. [2024-11-17 07:50:56,019 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 101 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2024-11-17 07:50:56,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 145 transitions, 967 flow [2024-11-17 07:50:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:50:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:50:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-17 07:50:56,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-17 07:50:56,022 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 491 flow. Second operand 4 states and 232 transitions. [2024-11-17 07:50:56,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 145 transitions, 967 flow [2024-11-17 07:50:56,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 145 transitions, 883 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-17 07:50:56,030 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 463 flow [2024-11-17 07:50:56,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-11-17 07:50:56,031 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 31 predicate places. [2024-11-17 07:50:56,031 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 463 flow [2024-11-17 07:50:56,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-17 07:50:56,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:56,031 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:56,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:50:56,032 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:50:56,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -81751198, now seen corresponding path program 1 times [2024-11-17 07:50:56,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:56,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208423955] [2024-11-17 07:50:56,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:56,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:50:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208423955] [2024-11-17 07:50:57,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208423955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:57,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816643453] [2024-11-17 07:50:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:57,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:57,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:57,428 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) [2024-11-17 07:50:57,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:50:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:57,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 07:50:57,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:57,560 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 [2024-11-17 07:50:57,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:50:57,666 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:57,666 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 [2024-11-17 07:50:57,754 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:57,755 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 [2024-11-17 07:50:57,849 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:57,850 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 [2024-11-17 07:50:57,936 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:50:57,936 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 [2024-11-17 07:50:57,975 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:50:57,976 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 [2024-11-17 07:50:58,013 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 18 treesize of output 13 [2024-11-17 07:50:58,027 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 18 treesize of output 13 [2024-11-17 07:50:58,045 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 18 treesize of output 13 [2024-11-17 07:50:58,064 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 18 treesize of output 13 [2024-11-17 07:50:58,087 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 18 treesize of output 13 [2024-11-17 07:50:58,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 07:50:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:50:58,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:58,309 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_305) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2024-11-17 07:50:58,358 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142| Int)) (or (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142| v_ArrVal_305) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142|) 0)))) is different from false [2024-11-17 07:51:54,490 INFO L349 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2024-11-17 07:51:54,490 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 73 [2024-11-17 07:51:54,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:51:54,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 35 [2024-11-17 07:51:54,510 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 11 treesize of output 9 [2024-11-17 07:51:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 36 not checked. [2024-11-17 07:51:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816643453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:51:54,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:51:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 45 [2024-11-17 07:51:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400934394] [2024-11-17 07:51:54,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:51:54,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-17 07:51:54,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-17 07:51:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1769, Unknown=16, NotChecked=174, Total=2162 [2024-11-17 07:51:54,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 84 [2024-11-17 07:51:54,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 463 flow. Second operand has 47 states, 47 states have (on average 29.914893617021278) internal successors, (1406), 47 states have internal predecessors, (1406), 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) [2024-11-17 07:51:54,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:54,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 84 [2024-11-17 07:51:54,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:57,485 INFO L124 PetriNetUnfolderBase]: 2058/3892 cut-off events. [2024-11-17 07:51:57,486 INFO L125 PetriNetUnfolderBase]: For 2921/3090 co-relation queries the response was YES. [2024-11-17 07:51:57,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 3892 events. 2058/3892 cut-off events. For 2921/3090 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 26544 event pairs, 493 based on Foata normal form. 116/3732 useless extension candidates. Maximal degree in co-relation 9727. Up to 1061 conditions per place. [2024-11-17 07:51:57,517 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 175 selfloop transitions, 40 changer transitions 0/241 dead transitions. [2024-11-17 07:51:57,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 241 transitions, 1338 flow [2024-11-17 07:51:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-17 07:51:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-17 07:51:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1065 transitions. [2024-11-17 07:51:57,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40898617511520735 [2024-11-17 07:51:57,523 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 463 flow. Second operand 31 states and 1065 transitions. [2024-11-17 07:51:57,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 241 transitions, 1338 flow [2024-11-17 07:51:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 241 transitions, 1338 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:51:57,537 INFO L231 Difference]: Finished difference. Result has 142 places, 108 transitions, 591 flow [2024-11-17 07:51:57,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=591, PETRI_PLACES=142, PETRI_TRANSITIONS=108} [2024-11-17 07:51:57,538 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-11-17 07:51:57,539 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 108 transitions, 591 flow [2024-11-17 07:51:57,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 29.914893617021278) internal successors, (1406), 47 states have internal predecessors, (1406), 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) [2024-11-17 07:51:57,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:57,540 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:57,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:57,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-17 07:51:57,741 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:57,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1832658670, now seen corresponding path program 1 times [2024-11-17 07:51:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651155340] [2024-11-17 07:51:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:51:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651155340] [2024-11-17 07:51:58,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651155340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182551007] [2024-11-17 07:51:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:58,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:58,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:58,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:58,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:51:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:58,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-17 07:51:58,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:58,967 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 [2024-11-17 07:51:58,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:51:59,053 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:51:59,053 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 [2024-11-17 07:51:59,120 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:51:59,120 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 [2024-11-17 07:51:59,197 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:51:59,198 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 [2024-11-17 07:51:59,273 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 07:51:59,273 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 [2024-11-17 07:51:59,312 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:51:59,313 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 [2024-11-17 07:51:59,341 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 [2024-11-17 07:51:59,365 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 [2024-11-17 07:51:59,385 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 [2024-11-17 07:51:59,403 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 [2024-11-17 07:51:59,422 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 [2024-11-17 07:51:59,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 07:51:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:51:59,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:51:59,577 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_367 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_367) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false