./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:12:44,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:12:44,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:12:44,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:12:44,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:12:44,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:12:44,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:12:44,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:12:44,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:12:44,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:12:44,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:12:44,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:12:44,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:12:44,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:12:44,505 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:12:44,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:12:44,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:12:44,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:12:44,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:12:44,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:12:44,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:12:44,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:12:44,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:12:44,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:12:44,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:12:44,511 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:12:44,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:12:44,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:12:44,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:12:44,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:12:44,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:12:44,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:12:44,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:12:44,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:12:44,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:44,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:12:44,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:12:44,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:12:44,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:12:44,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:12:44,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:12:44,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:12:44,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:12:44,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:12:44,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-09 15:12:44,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:12:44,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:12:44,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:12:44,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:12:44,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:12:44,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-09 15:12:46,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:12:46,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:12:46,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-09 15:12:46,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1e0dbd9/3a307f30bf884edba7d9cf74b8d10c27/FLAG2a833bfcc [2024-11-09 15:12:46,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1e0dbd9/3a307f30bf884edba7d9cf74b8d10c27 [2024-11-09 15:12:46,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:12:46,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:12:46,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:46,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:12:46,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:12:46,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410363cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46, skipping insertion in model container [2024-11-09 15:12:46,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:12:46,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:46,773 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:12:46,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:46,812 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:12:46,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46 WrapperNode [2024-11-09 15:12:46,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:46,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:46,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:12:46,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:12:46,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,852 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 234 [2024-11-09 15:12:46,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:46,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:12:46,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:12:46,854 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:12:46,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,887 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 15:12:46,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:12:46,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:12:46,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:12:46,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:12:46,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (1/1) ... [2024-11-09 15:12:46,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:46,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:46,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:12:46,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:12:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:12:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:12:47,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:12:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:12:47,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:12:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:12:47,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:12:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:12:47,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:12:47,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:12:47,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:12:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:12:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:12:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:12:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:12:47,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:12:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:12:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:12:47,016 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:12:47,159 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:12:47,162 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:12:47,582 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:12:47,583 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:12:47,971 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:12:47,972 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:12:47,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:47 BoogieIcfgContainer [2024-11-09 15:12:47,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:12:47,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:12:47,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:12:47,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:12:47,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:12:46" (1/3) ... [2024-11-09 15:12:47,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8f628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:47, skipping insertion in model container [2024-11-09 15:12:47,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:46" (2/3) ... [2024-11-09 15:12:47,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8f628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:47, skipping insertion in model container [2024-11-09 15:12:47,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:47" (3/3) ... [2024-11-09 15:12:47,983 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-09 15:12:48,004 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:12:48,005 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-09 15:12:48,005 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:12:48,176 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:12:48,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2024-11-09 15:12:48,259 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2024-11-09 15:12:48,259 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:12:48,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 4/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 226 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-11-09 15:12:48,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2024-11-09 15:12:48,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 135 flow [2024-11-09 15:12:48,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:12:48,285 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;@42b30ac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:12:48,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-09 15:12:48,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:12:48,290 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:12:48,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:12:48,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:48,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:12:48,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:48,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash 773833, now seen corresponding path program 1 times [2024-11-09 15:12:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:48,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289544959] [2024-11-09 15:12:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289544959] [2024-11-09 15:12:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289544959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:48,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:12:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589261335] [2024-11-09 15:12:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:48,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:48,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-09 15:12:48,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:48,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:48,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-09 15:12:48,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:49,620 INFO L124 PetriNetUnfolderBase]: 2971/4590 cut-off events. [2024-11-09 15:12:49,620 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-09 15:12:49,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 4590 events. 2971/4590 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29803 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8514. Up to 4217 conditions per place. [2024-11-09 15:12:49,655 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 37 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-09 15:12:49,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2024-11-09 15:12:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-09 15:12:49,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-11-09 15:12:49,670 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 135 flow. Second operand 4 states and 125 transitions. [2024-11-09 15:12:49,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2024-11-09 15:12:49,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:49,682 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 143 flow [2024-11-09 15:12:49,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-09 15:12:49,690 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-09 15:12:49,690 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 143 flow [2024-11-09 15:12:49,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:49,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:49,691 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:12:49,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:12:49,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:49,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1579194334, now seen corresponding path program 1 times [2024-11-09 15:12:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638393018] [2024-11-09 15:12:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:49,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638393018] [2024-11-09 15:12:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638393018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860781914] [2024-11-09 15:12:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:49,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:49,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:49,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:12:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:49,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:49,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:50,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860781914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:50,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:50,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:12:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555760022] [2024-11-09 15:12:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:50,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:12:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:12:50,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:12:50,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-09 15:12:50,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:50,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:50,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-09 15:12:50,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:50,798 INFO L124 PetriNetUnfolderBase]: 2971/4589 cut-off events. [2024-11-09 15:12:50,799 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 15:12:50,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 4589 events. 2971/4589 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29904 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8932. Up to 4212 conditions per place. [2024-11-09 15:12:50,826 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-09 15:12:50,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 219 flow [2024-11-09 15:12:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:12:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:12:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-09 15:12:50,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-11-09 15:12:50,829 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 143 flow. Second operand 6 states and 155 transitions. [2024-11-09 15:12:50,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 219 flow [2024-11-09 15:12:50,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:12:50,831 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 150 flow [2024-11-09 15:12:50,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-09 15:12:50,832 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2024-11-09 15:12:50,832 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 150 flow [2024-11-09 15:12:50,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:50,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:50,833 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 15:12:50,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:12:51,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:51,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:51,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1581743135, now seen corresponding path program 1 times [2024-11-09 15:12:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:51,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521341666] [2024-11-09 15:12:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521341666] [2024-11-09 15:12:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521341666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:12:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385745121] [2024-11-09 15:12:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:51,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:12:51,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-11-09 15:12:51,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:51,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:51,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-11-09 15:12:51,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:52,006 INFO L124 PetriNetUnfolderBase]: 4377/6876 cut-off events. [2024-11-09 15:12:52,006 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 15:12:52,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13382 conditions, 6876 events. 4377/6876 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 46724 event pairs, 3263 based on Foata normal form. 0/4093 useless extension candidates. Maximal degree in co-relation 10025. Up to 4714 conditions per place. [2024-11-09 15:12:52,055 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 82 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-09 15:12:52,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 427 flow [2024-11-09 15:12:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:12:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:12:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-11-09 15:12:52,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5784615384615385 [2024-11-09 15:12:52,058 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 150 flow. Second operand 5 states and 188 transitions. [2024-11-09 15:12:52,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 427 flow [2024-11-09 15:12:52,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 405 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:52,061 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 153 flow [2024-11-09 15:12:52,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-09 15:12:52,062 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-09 15:12:52,062 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 153 flow [2024-11-09 15:12:52,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:52,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:52,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:12:52,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:12:52,064 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:52,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1710384875, now seen corresponding path program 1 times [2024-11-09 15:12:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:52,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101759554] [2024-11-09 15:12:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:52,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101759554] [2024-11-09 15:12:52,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101759554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431725178] [2024-11-09 15:12:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:52,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:52,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:52,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:52,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:12:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:52,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:52,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:52,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:52,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431725178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:52,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:52,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:12:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642677588] [2024-11-09 15:12:52,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:52,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:12:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:12:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:12:52,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-09 15:12:52,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:52,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:52,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-09 15:12:52,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:53,272 INFO L124 PetriNetUnfolderBase]: 4026/6344 cut-off events. [2024-11-09 15:12:53,273 INFO L125 PetriNetUnfolderBase]: For 1171/1275 co-relation queries the response was YES. [2024-11-09 15:12:53,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13244 conditions, 6344 events. 4026/6344 cut-off events. For 1171/1275 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 43714 event pairs, 3468 based on Foata normal form. 3/3762 useless extension candidates. Maximal degree in co-relation 9327. Up to 5782 conditions per place. [2024-11-09 15:12:53,307 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-11-09 15:12:53,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 285 flow [2024-11-09 15:12:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:12:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:12:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-11-09 15:12:53,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723076923076923 [2024-11-09 15:12:53,311 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 153 flow. Second operand 10 states and 242 transitions. [2024-11-09 15:12:53,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 285 flow [2024-11-09 15:12:53,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:53,314 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 222 flow [2024-11-09 15:12:53,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-09 15:12:53,316 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-11-09 15:12:53,317 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 222 flow [2024-11-09 15:12:53,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:53,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:53,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:53,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:12:53,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:12:53,522 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:53,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash -400621260, now seen corresponding path program 1 times [2024-11-09 15:12:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583615680] [2024-11-09 15:12:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583615680] [2024-11-09 15:12:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583615680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:12:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495256048] [2024-11-09 15:12:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:53,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:12:53,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-11-09 15:12:53,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:53,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:53,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-11-09 15:12:53,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:54,319 INFO L124 PetriNetUnfolderBase]: 3682/5799 cut-off events. [2024-11-09 15:12:54,320 INFO L125 PetriNetUnfolderBase]: For 709/871 co-relation queries the response was YES. [2024-11-09 15:12:54,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 5799 events. 3682/5799 cut-off events. For 709/871 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 38055 event pairs, 3023 based on Foata normal form. 0/3441 useless extension candidates. Maximal degree in co-relation 11820. Up to 4743 conditions per place. [2024-11-09 15:12:54,353 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 5 changer transitions 2/99 dead transitions. [2024-11-09 15:12:54,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 469 flow [2024-11-09 15:12:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:12:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:12:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-09 15:12:54,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-09 15:12:54,355 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 222 flow. Second operand 5 states and 175 transitions. [2024-11-09 15:12:54,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 469 flow [2024-11-09 15:12:54,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 458 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:54,361 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 236 flow [2024-11-09 15:12:54,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-09 15:12:54,363 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-09 15:12:54,363 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 236 flow [2024-11-09 15:12:54,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:54,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:54,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:54,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:12:54,364 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:54,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035478, now seen corresponding path program 1 times [2024-11-09 15:12:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882864050] [2024-11-09 15:12:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:54,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:54,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882864050] [2024-11-09 15:12:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882864050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:54,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145055473] [2024-11-09 15:12:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:54,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:54,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:54,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:54,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:12:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:54,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 15:12:54,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:54,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:12:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:54,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:54,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:12:54,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:12:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145055473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:54,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:54,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:12:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738556904] [2024-11-09 15:12:54,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:54,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:12:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:12:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:12:54,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-09 15:12:54,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 236 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:54,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:54,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-09 15:12:54,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:56,437 INFO L124 PetriNetUnfolderBase]: 5230/8958 cut-off events. [2024-11-09 15:12:56,437 INFO L125 PetriNetUnfolderBase]: For 1490/1867 co-relation queries the response was YES. [2024-11-09 15:12:56,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 8958 events. 5230/8958 cut-off events. For 1490/1867 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 70477 event pairs, 1573 based on Foata normal form. 0/5564 useless extension candidates. Maximal degree in co-relation 18165. Up to 2500 conditions per place. [2024-11-09 15:12:56,490 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 99 selfloop transitions, 16 changer transitions 1/133 dead transitions. [2024-11-09 15:12:56,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 618 flow [2024-11-09 15:12:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:12:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:12:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-11-09 15:12:56,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2024-11-09 15:12:56,492 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 236 flow. Second operand 8 states and 276 transitions. [2024-11-09 15:12:56,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 618 flow [2024-11-09 15:12:56,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:12:56,497 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 304 flow [2024-11-09 15:12:56,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-11-09 15:12:56,497 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2024-11-09 15:12:56,498 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 304 flow [2024-11-09 15:12:56,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:56,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:56,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:56,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:12:56,702 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 [2024-11-09 15:12:56,703 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:56,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035477, now seen corresponding path program 1 times [2024-11-09 15:12:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:56,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139176272] [2024-11-09 15:12:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:56,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:56,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139176272] [2024-11-09 15:12:56,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139176272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:56,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306657420] [2024-11-09 15:12:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:56,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:56,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:56,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:12:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:57,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 15:12:57,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:57,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:12:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:57,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:12:57,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 15:12:57,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:12:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306657420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:12:57,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:12:57,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-09 15:12:57,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376599511] [2024-11-09 15:12:57,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:12:57,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:12:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:12:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:12:57,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-09 15:12:57,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:57,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:57,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-09 15:12:57,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:58,180 INFO L124 PetriNetUnfolderBase]: 4876/8459 cut-off events. [2024-11-09 15:12:58,181 INFO L125 PetriNetUnfolderBase]: For 3929/4287 co-relation queries the response was YES. [2024-11-09 15:12:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20080 conditions, 8459 events. 4876/8459 cut-off events. For 3929/4287 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 65799 event pairs, 1573 based on Foata normal form. 0/5501 useless extension candidates. Maximal degree in co-relation 20039. Up to 2359 conditions per place. [2024-11-09 15:12:58,245 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 98 selfloop transitions, 16 changer transitions 1/132 dead transitions. [2024-11-09 15:12:58,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 666 flow [2024-11-09 15:12:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:12:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:12:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-11-09 15:12:58,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-11-09 15:12:58,247 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 304 flow. Second operand 8 states and 275 transitions. [2024-11-09 15:12:58,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 666 flow [2024-11-09 15:12:58,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 649 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:58,254 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 315 flow [2024-11-09 15:12:58,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-11-09 15:12:58,255 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-09 15:12:58,255 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 315 flow [2024-11-09 15:12:58,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:58,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:58,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:58,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:12:58,459 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 [2024-11-09 15:12:58,460 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:58,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035474, now seen corresponding path program 1 times [2024-11-09 15:12:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530369772] [2024-11-09 15:12:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:12:58,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:58,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530369772] [2024-11-09 15:12:58,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530369772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:58,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:58,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:12:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986830407] [2024-11-09 15:12:58,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:58,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:12:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:58,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:12:58,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:12:58,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-09 15:12:58,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:58,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:58,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-09 15:12:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:59,173 INFO L124 PetriNetUnfolderBase]: 4512/8124 cut-off events. [2024-11-09 15:12:59,173 INFO L125 PetriNetUnfolderBase]: For 6519/6818 co-relation queries the response was YES. [2024-11-09 15:12:59,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20000 conditions, 8124 events. 4512/8124 cut-off events. For 6519/6818 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 63834 event pairs, 1253 based on Foata normal form. 0/5710 useless extension candidates. Maximal degree in co-relation 19959. Up to 4355 conditions per place. [2024-11-09 15:12:59,224 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 76 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-11-09 15:12:59,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 518 flow [2024-11-09 15:12:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:12:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:12:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-09 15:12:59,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-09 15:12:59,226 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 315 flow. Second operand 3 states and 126 transitions. [2024-11-09 15:12:59,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 518 flow [2024-11-09 15:12:59,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 503 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:59,232 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 296 flow [2024-11-09 15:12:59,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-11-09 15:12:59,233 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-11-09 15:12:59,233 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 296 flow [2024-11-09 15:12:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:59,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:59,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:12:59,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:12:59,234 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:12:59,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1536299316, now seen corresponding path program 1 times [2024-11-09 15:12:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:59,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046233495] [2024-11-09 15:12:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:59,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046233495] [2024-11-09 15:12:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046233495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:59,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:59,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:12:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270805912] [2024-11-09 15:12:59,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:59,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:12:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:12:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:12:59,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-11-09 15:12:59,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:59,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:59,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-11-09 15:12:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:00,099 INFO L124 PetriNetUnfolderBase]: 4769/7585 cut-off events. [2024-11-09 15:13:00,099 INFO L125 PetriNetUnfolderBase]: For 6642/7180 co-relation queries the response was YES. [2024-11-09 15:13:00,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 7585 events. 4769/7585 cut-off events. For 6642/7180 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51695 event pairs, 4132 based on Foata normal form. 0/5093 useless extension candidates. Maximal degree in co-relation 19831. Up to 6599 conditions per place. [2024-11-09 15:13:00,146 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 49 selfloop transitions, 2 changer transitions 22/89 dead transitions. [2024-11-09 15:13:00,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 498 flow [2024-11-09 15:13:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:13:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:13:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-09 15:13:00,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2024-11-09 15:13:00,149 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 296 flow. Second operand 5 states and 162 transitions. [2024-11-09 15:13:00,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 498 flow [2024-11-09 15:13:00,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:00,156 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 276 flow [2024-11-09 15:13:00,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-11-09 15:13:00,159 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-11-09 15:13:00,159 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 276 flow [2024-11-09 15:13:00,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:00,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:00,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:00,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:13:00,160 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:00,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1521484720, now seen corresponding path program 1 times [2024-11-09 15:13:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306692100] [2024-11-09 15:13:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:00,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306692100] [2024-11-09 15:13:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306692100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:00,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503485538] [2024-11-09 15:13:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:00,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:00,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-09 15:13:00,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:00,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:00,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-09 15:13:00,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:00,981 INFO L124 PetriNetUnfolderBase]: 5587/8602 cut-off events. [2024-11-09 15:13:00,981 INFO L125 PetriNetUnfolderBase]: For 5862/6477 co-relation queries the response was YES. [2024-11-09 15:13:00,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22017 conditions, 8602 events. 5587/8602 cut-off events. For 5862/6477 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 58866 event pairs, 2113 based on Foata normal form. 292/6275 useless extension candidates. Maximal degree in co-relation 21989. Up to 6433 conditions per place. [2024-11-09 15:13:01,024 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 92 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-09 15:13:01,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 576 flow [2024-11-09 15:13:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-09 15:13:01,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-11-09 15:13:01,026 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 276 flow. Second operand 4 states and 159 transitions. [2024-11-09 15:13:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 576 flow [2024-11-09 15:13:01,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 538 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-11-09 15:13:01,044 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 275 flow [2024-11-09 15:13:01,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-11-09 15:13:01,045 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-09 15:13:01,045 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 275 flow [2024-11-09 15:13:01,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:01,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:01,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:01,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:13:01,046 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:01,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102979, now seen corresponding path program 1 times [2024-11-09 15:13:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:01,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059183963] [2024-11-09 15:13:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059183963] [2024-11-09 15:13:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059183963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:13:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70295012] [2024-11-09 15:13:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:01,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:01,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-09 15:13:01,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:01,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:01,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-09 15:13:01,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:01,821 INFO L124 PetriNetUnfolderBase]: 5773/9600 cut-off events. [2024-11-09 15:13:01,821 INFO L125 PetriNetUnfolderBase]: For 9032/9032 co-relation queries the response was YES. [2024-11-09 15:13:01,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24197 conditions, 9600 events. 5773/9600 cut-off events. For 9032/9032 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 71322 event pairs, 1694 based on Foata normal form. 0/6632 useless extension candidates. Maximal degree in co-relation 24165. Up to 5988 conditions per place. [2024-11-09 15:13:01,868 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 73 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-09 15:13:01,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 539 flow [2024-11-09 15:13:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-09 15:13:01,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-09 15:13:01,869 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 275 flow. Second operand 3 states and 126 transitions. [2024-11-09 15:13:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 539 flow [2024-11-09 15:13:01,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:01,873 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 294 flow [2024-11-09 15:13:01,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-11-09 15:13:01,874 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-09 15:13:01,874 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 294 flow [2024-11-09 15:13:01,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:01,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:01,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:01,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:13:01,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:01,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102975, now seen corresponding path program 1 times [2024-11-09 15:13:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387902566] [2024-11-09 15:13:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:02,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:02,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387902566] [2024-11-09 15:13:02,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387902566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:02,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947896906] [2024-11-09 15:13:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:02,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:02,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:02,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:02,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:13:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:02,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 15:13:02,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:02,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:02,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:02,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:13:02,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:13:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947896906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:02,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:13:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727126692] [2024-11-09 15:13:02,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:02,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:13:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:13:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:13:02,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-09 15:13:02,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 294 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:02,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:02,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-09 15:13:02,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:03,549 INFO L124 PetriNetUnfolderBase]: 7770/12807 cut-off events. [2024-11-09 15:13:03,550 INFO L125 PetriNetUnfolderBase]: For 9619/9619 co-relation queries the response was YES. [2024-11-09 15:13:03,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33788 conditions, 12807 events. 7770/12807 cut-off events. For 9619/9619 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 97886 event pairs, 2218 based on Foata normal form. 0/9671 useless extension candidates. Maximal degree in co-relation 33754. Up to 4112 conditions per place. [2024-11-09 15:13:03,621 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 90 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-11-09 15:13:03,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 123 transitions, 737 flow [2024-11-09 15:13:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:13:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:13:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-11-09 15:13:03,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2024-11-09 15:13:03,623 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 294 flow. Second operand 8 states and 253 transitions. [2024-11-09 15:13:03,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 123 transitions, 737 flow [2024-11-09 15:13:03,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:03,629 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 366 flow [2024-11-09 15:13:03,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-11-09 15:13:03,630 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-11-09 15:13:03,630 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 366 flow [2024-11-09 15:13:03,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:03,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:03,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:03,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:13:03,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 15:13:03,836 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:03,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102976, now seen corresponding path program 1 times [2024-11-09 15:13:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:03,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56855580] [2024-11-09 15:13:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:04,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:04,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56855580] [2024-11-09 15:13:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56855580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540191576] [2024-11-09 15:13:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:04,088 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) [2024-11-09 15:13:04,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:13:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:04,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 15:13:04,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:04,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:04,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:04,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 15:13:04,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:13:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:04,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540191576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:04,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:04,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-09 15:13:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893899678] [2024-11-09 15:13:04,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:04,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:13:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:13:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:13:04,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-09 15:13:04,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:04,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:04,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-09 15:13:04,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:05,664 INFO L124 PetriNetUnfolderBase]: 7018/11861 cut-off events. [2024-11-09 15:13:05,665 INFO L125 PetriNetUnfolderBase]: For 12693/12693 co-relation queries the response was YES. [2024-11-09 15:13:05,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35255 conditions, 11861 events. 7018/11861 cut-off events. For 12693/12693 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 92867 event pairs, 2060 based on Foata normal form. 310/9412 useless extension candidates. Maximal degree in co-relation 35216. Up to 3906 conditions per place. [2024-11-09 15:13:05,723 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 89 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-11-09 15:13:05,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 784 flow [2024-11-09 15:13:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:13:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:13:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-11-09 15:13:05,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-09 15:13:05,725 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 366 flow. Second operand 8 states and 252 transitions. [2024-11-09 15:13:05,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 784 flow [2024-11-09 15:13:05,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 122 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:13:05,731 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 382 flow [2024-11-09 15:13:05,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-11-09 15:13:05,732 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-11-09 15:13:05,732 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 382 flow [2024-11-09 15:13:05,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:05,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:05,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:05,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:05,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:05,934 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:05,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 293847717, now seen corresponding path program 1 times [2024-11-09 15:13:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200736824] [2024-11-09 15:13:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:05,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:05,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200736824] [2024-11-09 15:13:05,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200736824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:05,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:05,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50993286] [2024-11-09 15:13:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:05,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:05,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-09 15:13:05,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:05,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:05,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-09 15:13:05,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:07,158 INFO L124 PetriNetUnfolderBase]: 9082/13791 cut-off events. [2024-11-09 15:13:07,158 INFO L125 PetriNetUnfolderBase]: For 19136/19136 co-relation queries the response was YES. [2024-11-09 15:13:07,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44333 conditions, 13791 events. 9082/13791 cut-off events. For 19136/19136 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 96836 event pairs, 4504 based on Foata normal form. 428/11255 useless extension candidates. Maximal degree in co-relation 44294. Up to 9028 conditions per place. [2024-11-09 15:13:07,241 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 104 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-09 15:13:07,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 123 transitions, 814 flow [2024-11-09 15:13:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:07,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-09 15:13:07,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-11-09 15:13:07,242 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 382 flow. Second operand 4 states and 159 transitions. [2024-11-09 15:13:07,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 123 transitions, 814 flow [2024-11-09 15:13:07,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 801 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:07,251 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 390 flow [2024-11-09 15:13:07,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-11-09 15:13:07,252 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-11-09 15:13:07,252 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 390 flow [2024-11-09 15:13:07,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:07,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:07,253 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:07,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 15:13:07,253 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:07,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 280090236, now seen corresponding path program 1 times [2024-11-09 15:13:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996416302] [2024-11-09 15:13:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:07,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996416302] [2024-11-09 15:13:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996416302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082506170] [2024-11-09 15:13:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:07,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:07,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:07,596 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) [2024-11-09 15:13:07,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:13:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:07,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:13:07,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:07,711 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 23 treesize of output 1 [2024-11-09 15:13:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:08,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:08,275 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 18 treesize of output 16 [2024-11-09 15:13:08,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-09 15:13:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082506170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:08,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:08,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-09 15:13:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71167960] [2024-11-09 15:13:08,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:08,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 15:13:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 15:13:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:13:08,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-09 15:13:08,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 390 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:08,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:08,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-09 15:13:08,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:14,599 INFO L124 PetriNetUnfolderBase]: 28447/43984 cut-off events. [2024-11-09 15:13:14,599 INFO L125 PetriNetUnfolderBase]: For 74909/74909 co-relation queries the response was YES. [2024-11-09 15:13:14,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147861 conditions, 43984 events. 28447/43984 cut-off events. For 74909/74909 co-relation queries the response was YES. Maximal size of possible extension queue 2242. Compared 361853 event pairs, 10806 based on Foata normal form. 0/32850 useless extension candidates. Maximal degree in co-relation 147822. Up to 8965 conditions per place. [2024-11-09 15:13:14,955 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 284 selfloop transitions, 35 changer transitions 0/336 dead transitions. [2024-11-09 15:13:14,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 336 transitions, 2558 flow [2024-11-09 15:13:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:13:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:13:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 510 transitions. [2024-11-09 15:13:14,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-11-09 15:13:14,957 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 390 flow. Second operand 15 states and 510 transitions. [2024-11-09 15:13:14,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 336 transitions, 2558 flow [2024-11-09 15:13:14,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 336 transitions, 2504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:14,994 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 590 flow [2024-11-09 15:13:14,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=590, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-11-09 15:13:14,994 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-11-09 15:13:14,994 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 590 flow [2024-11-09 15:13:14,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:14,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:14,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:15,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:15,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:15,196 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:15,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash 280090235, now seen corresponding path program 1 times [2024-11-09 15:13:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586837368] [2024-11-09 15:13:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586837368] [2024-11-09 15:13:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586837368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389333399] [2024-11-09 15:13:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:15,510 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) [2024-11-09 15:13:15,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:13:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:15,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:13:15,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:15,617 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 23 treesize of output 1 [2024-11-09 15:13:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:16,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:16,304 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 20 treesize of output 18 [2024-11-09 15:13:16,311 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 26 treesize of output 20 [2024-11-09 15:13:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:16,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389333399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:16,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:16,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-09 15:13:16,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043121952] [2024-11-09 15:13:16,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:16,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 15:13:16,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:16,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 15:13:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:13:16,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-09 15:13:16,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 590 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:16,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:16,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-09 15:13:16,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:22,841 INFO L124 PetriNetUnfolderBase]: 27421/42856 cut-off events. [2024-11-09 15:13:22,842 INFO L125 PetriNetUnfolderBase]: For 70088/70088 co-relation queries the response was YES. [2024-11-09 15:13:23,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157484 conditions, 42856 events. 27421/42856 cut-off events. For 70088/70088 co-relation queries the response was YES. Maximal size of possible extension queue 2183. Compared 356331 event pairs, 10806 based on Foata normal form. 536/33847 useless extension candidates. Maximal degree in co-relation 157436. Up to 8845 conditions per place. [2024-11-09 15:13:23,287 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 282 selfloop transitions, 35 changer transitions 0/334 dead transitions. [2024-11-09 15:13:23,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 334 transitions, 2646 flow [2024-11-09 15:13:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:13:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:13:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 508 transitions. [2024-11-09 15:13:23,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521025641025641 [2024-11-09 15:13:23,289 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 590 flow. Second operand 15 states and 508 transitions. [2024-11-09 15:13:23,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 334 transitions, 2646 flow [2024-11-09 15:13:23,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 334 transitions, 2637 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:13:23,530 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 655 flow [2024-11-09 15:13:23,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=655, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-11-09 15:13:23,531 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 54 predicate places. [2024-11-09 15:13:23,531 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 655 flow [2024-11-09 15:13:23,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:23,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:23,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:23,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:23,732 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,SelfDestructingSolverStorable15 [2024-11-09 15:13:23,732 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:23,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1762250554, now seen corresponding path program 1 times [2024-11-09 15:13:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802527743] [2024-11-09 15:13:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:23,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802527743] [2024-11-09 15:13:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802527743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534989623] [2024-11-09 15:13:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:23,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:23,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:23,867 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) [2024-11-09 15:13:23,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:13:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:23,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:13:23,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:24,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:24,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534989623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:24,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:24,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 15:13:24,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759711380] [2024-11-09 15:13:24,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:24,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 15:13:24,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 15:13:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:13:24,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-11-09 15:13:24,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 655 flow. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:24,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:24,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-11-09 15:13:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:29,675 INFO L124 PetriNetUnfolderBase]: 28635/44137 cut-off events. [2024-11-09 15:13:29,676 INFO L125 PetriNetUnfolderBase]: For 90623/91816 co-relation queries the response was YES. [2024-11-09 15:13:29,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167176 conditions, 44137 events. 28635/44137 cut-off events. For 90623/91816 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 351251 event pairs, 20708 based on Foata normal form. 689/35803 useless extension candidates. Maximal degree in co-relation 167126. Up to 30864 conditions per place. [2024-11-09 15:13:30,087 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 201 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2024-11-09 15:13:30,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 232 transitions, 1862 flow [2024-11-09 15:13:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-11-09 15:13:30,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44769230769230767 [2024-11-09 15:13:30,089 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 655 flow. Second operand 10 states and 291 transitions. [2024-11-09 15:13:30,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 232 transitions, 1862 flow [2024-11-09 15:13:30,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1802 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-11-09 15:13:30,433 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 708 flow [2024-11-09 15:13:30,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=708, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-11-09 15:13:30,434 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2024-11-09 15:13:30,434 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 708 flow [2024-11-09 15:13:30,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:30,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:30,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:30,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:30,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:13:30,635 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:30,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1416192319, now seen corresponding path program 1 times [2024-11-09 15:13:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258706132] [2024-11-09 15:13:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:30,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:30,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258706132] [2024-11-09 15:13:30,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258706132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:30,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:13:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027854574] [2024-11-09 15:13:30,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:30,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:13:30,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-09 15:13:30,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 708 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:30,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:30,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-09 15:13:30,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:35,347 INFO L124 PetriNetUnfolderBase]: 24157/36351 cut-off events. [2024-11-09 15:13:35,347 INFO L125 PetriNetUnfolderBase]: For 92174/93349 co-relation queries the response was YES. [2024-11-09 15:13:35,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144925 conditions, 36351 events. 24157/36351 cut-off events. For 92174/93349 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 281889 event pairs, 4627 based on Foata normal form. 1311/31429 useless extension candidates. Maximal degree in co-relation 144871. Up to 20298 conditions per place. [2024-11-09 15:13:35,686 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 135 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-11-09 15:13:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 1456 flow [2024-11-09 15:13:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:13:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:13:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-11-09 15:13:35,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2024-11-09 15:13:35,688 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 708 flow. Second operand 5 states and 167 transitions. [2024-11-09 15:13:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 1456 flow [2024-11-09 15:13:35,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 169 transitions, 1420 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:13:35,802 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 704 flow [2024-11-09 15:13:35,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=704, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-11-09 15:13:35,802 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 55 predicate places. [2024-11-09 15:13:35,802 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 704 flow [2024-11-09 15:13:35,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:35,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:35,803 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:13:35,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 15:13:35,803 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-09 15:13:35,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash -51210848, now seen corresponding path program 2 times [2024-11-09 15:13:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836231526] [2024-11-09 15:13:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836231526] [2024-11-09 15:13:35,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836231526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661820974] [2024-11-09 15:13:35,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:13:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:35,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:35,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:13:35,992 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:13:35,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:35,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:13:35,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:36,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661820974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:36,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:36,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:13:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515270155] [2024-11-09 15:13:36,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:36,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:13:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:13:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:13:36,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-09 15:13:36,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 704 flow. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:36,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:36,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-09 15:13:36,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand