./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.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 ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:49:00,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:49:01,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:49:01,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:49:01,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:49:01,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:49:01,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:49:01,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:49:01,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:49:01,073 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:49:01,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:49:01,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:49:01,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:49:01,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:49:01,075 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:49:01,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:49:01,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:49:01,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:49:01,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:49:01,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:49:01,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:49:01,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:49:01,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:49:01,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:49:01,082 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:49:01,082 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:49:01,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:49:01,083 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:49:01,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:49:01,083 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:49:01,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:49:01,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:49:01,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:49:01,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:49:01,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:01,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:49:01,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:49:01,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:49:01,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:49:01,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:49:01,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:49:01,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:49:01,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:49:01,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:49:01,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2024-10-13 16:49:01,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:49:01,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:49:01,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:49:01,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:49:01,398 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:49:01,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-13 16:49:02,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:49:03,193 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:49:03,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-13 16:49:03,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1c0888d/ec69722224f644aabce998a3ea585b72/FLAGdd0ec6c08 [2024-10-13 16:49:03,568 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1c0888d/ec69722224f644aabce998a3ea585b72 [2024-10-13 16:49:03,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:49:03,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:49:03,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:03,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:49:03,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:49:03,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c5ded9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03, skipping insertion in model container [2024-10-13 16:49:03,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:49:03,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:03,860 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:49:03,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:03,898 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:49:03,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03 WrapperNode [2024-10-13 16:49:03,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:03,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:03,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:49:03,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:49:03,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,936 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 176 [2024-10-13 16:49:03,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:03,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:49:03,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:49:03,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:49:03,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,970 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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]. [2024-10-13 16:49:03,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:03,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:49:03,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:49:03,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:49:03,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:49:03,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (1/1) ... [2024-10-13 16:49:04,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:04,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:04,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:49:04,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:49:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:49:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:49:04,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:49:04,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:49:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:49:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:49:04,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:49:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:49:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:49:04,078 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:49:04,177 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:49:04,178 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:49:04,501 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:49:04,501 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:49:04,890 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:49:04,892 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 16:49:04,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:04 BoogieIcfgContainer [2024-10-13 16:49:04,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:49:04,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:49:04,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:49:04,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:49:04,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:49:03" (1/3) ... [2024-10-13 16:49:04,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723abe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:04, skipping insertion in model container [2024-10-13 16:49:04,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:03" (2/3) ... [2024-10-13 16:49:04,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723abe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:04, skipping insertion in model container [2024-10-13 16:49:04,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:04" (3/3) ... [2024-10-13 16:49:04,903 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-10-13 16:49:04,921 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:49:04,921 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-13 16:49:04,921 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:49:05,020 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:49:05,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 48 transitions, 110 flow [2024-10-13 16:49:05,088 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-13 16:49:05,089 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:49:05,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 3/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 132 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-13 16:49:05,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 48 transitions, 110 flow [2024-10-13 16:49:05,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 44 transitions, 97 flow [2024-10-13 16:49:05,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:49:05,112 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;@3e16de83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:49:05,112 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-13 16:49:05,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:49:05,116 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:49:05,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:49:05,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:05,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:49:05,117 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:05,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 600957, now seen corresponding path program 1 times [2024-10-13 16:49:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:05,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669310176] [2024-10-13 16:49:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:05,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:05,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669310176] [2024-10-13 16:49:05,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669310176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:05,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:05,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:05,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982858629] [2024-10-13 16:49:05,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:05,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:05,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:05,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:05,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:05,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:05,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:05,847 INFO L124 PetriNetUnfolderBase]: 273/521 cut-off events. [2024-10-13 16:49:05,848 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-13 16:49:05,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 521 events. 273/521 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2895 event pairs, 232 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 950. Up to 468 conditions per place. [2024-10-13 16:49:05,859 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 28 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-10-13 16:49:05,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 159 flow [2024-10-13 16:49:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-10-13 16:49:05,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-13 16:49:05,877 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 97 flow. Second operand 4 states and 90 transitions. [2024-10-13 16:49:05,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 159 flow [2024-10-13 16:49:05,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:05,890 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 113 flow [2024-10-13 16:49:05,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-10-13 16:49:05,899 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-10-13 16:49:05,900 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 113 flow [2024-10-13 16:49:05,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:05,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:05,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:49:05,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:49:05,901 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:05,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 723828306, now seen corresponding path program 1 times [2024-10-13 16:49:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488554222] [2024-10-13 16:49:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:06,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488554222] [2024-10-13 16:49:06,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488554222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934846916] [2024-10-13 16:49:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:06,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:06,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:06,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:06,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:49:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:06,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:06,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:06,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934846916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:06,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:49:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841507463] [2024-10-13 16:49:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:06,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:06,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:06,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:06,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-10-13 16:49:06,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:06,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:06,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:06,455 INFO L124 PetriNetUnfolderBase]: 273/520 cut-off events. [2024-10-13 16:49:06,456 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:49:06,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 520 events. 273/520 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2911 event pairs, 232 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 996. Up to 463 conditions per place. [2024-10-13 16:49:06,460 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 24 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-10-13 16:49:06,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 171 flow [2024-10-13 16:49:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-13 16:49:06,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-10-13 16:49:06,463 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 113 flow. Second operand 6 states and 110 transitions. [2024-10-13 16:49:06,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 171 flow [2024-10-13 16:49:06,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:06,465 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 120 flow [2024-10-13 16:49:06,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-10-13 16:49:06,466 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-10-13 16:49:06,467 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 120 flow [2024-10-13 16:49:06,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-10-13 16:49:06,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:06,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:49:06,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:06,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:06,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:06,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash 725815757, now seen corresponding path program 1 times [2024-10-13 16:49:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:06,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741537306] [2024-10-13 16:49:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741537306] [2024-10-13 16:49:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741537306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:06,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:06,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:49:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824737812] [2024-10-13 16:49:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:06,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:49:06,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:49:06,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:06,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:06,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:49:06,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:07,028 INFO L124 PetriNetUnfolderBase]: 378/737 cut-off events. [2024-10-13 16:49:07,028 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 16:49:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 737 events. 378/737 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4077 event pairs, 302 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 1110. Up to 514 conditions per place. [2024-10-13 16:49:07,037 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 52 selfloop transitions, 5 changer transitions 2/70 dead transitions. [2024-10-13 16:49:07,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 300 flow [2024-10-13 16:49:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-13 16:49:07,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 16:49:07,043 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 120 flow. Second operand 5 states and 130 transitions. [2024-10-13 16:49:07,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 300 flow [2024-10-13 16:49:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 278 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:07,045 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-10-13 16:49:07,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-13 16:49:07,048 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-10-13 16:49:07,049 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-10-13 16:49:07,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:07,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:07,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:49:07,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:49:07,050 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:07,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:07,051 INFO L85 PathProgramCache]: Analyzing trace with hash 963841598, now seen corresponding path program 1 times [2024-10-13 16:49:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:07,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600498387] [2024-10-13 16:49:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:07,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600498387] [2024-10-13 16:49:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600498387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191227284] [2024-10-13 16:49:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:07,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:07,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:07,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:49:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:07,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:07,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:07,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191227284] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:07,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:07,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:49:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37083247] [2024-10-13 16:49:07,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:07,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:07,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:07,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:07,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:07,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:07,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:07,562 INFO L124 PetriNetUnfolderBase]: 352/748 cut-off events. [2024-10-13 16:49:07,562 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-10-13 16:49:07,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 748 events. 352/748 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4430 event pairs, 302 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 1143. Up to 616 conditions per place. [2024-10-13 16:49:07,568 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 29 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-10-13 16:49:07,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 237 flow [2024-10-13 16:49:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-10-13 16:49:07,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36041666666666666 [2024-10-13 16:49:07,571 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 10 states and 173 transitions. [2024-10-13 16:49:07,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 237 flow [2024-10-13 16:49:07,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:07,573 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 192 flow [2024-10-13 16:49:07,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-13 16:49:07,574 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2024-10-13 16:49:07,575 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 192 flow [2024-10-13 16:49:07,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:07,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:07,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:07,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:49:07,776 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 [2024-10-13 16:49:07,776 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:07,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1692958036, now seen corresponding path program 1 times [2024-10-13 16:49:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887477401] [2024-10-13 16:49:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:07,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887477401] [2024-10-13 16:49:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887477401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:07,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:07,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:49:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106144756] [2024-10-13 16:49:07,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:07,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:49:07,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:49:07,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:07,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:07,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:49:07,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:08,059 INFO L124 PetriNetUnfolderBase]: 325/655 cut-off events. [2024-10-13 16:49:08,061 INFO L125 PetriNetUnfolderBase]: For 127/147 co-relation queries the response was YES. [2024-10-13 16:49:08,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 655 events. 325/655 cut-off events. For 127/147 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3568 event pairs, 272 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 1337. Up to 521 conditions per place. [2024-10-13 16:49:08,067 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 37 selfloop transitions, 2 changer transitions 14/64 dead transitions. [2024-10-13 16:49:08,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 333 flow [2024-10-13 16:49:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-10-13 16:49:08,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-13 16:49:08,070 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 192 flow. Second operand 5 states and 115 transitions. [2024-10-13 16:49:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 333 flow [2024-10-13 16:49:08,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 322 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:08,073 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 174 flow [2024-10-13 16:49:08,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2024-10-13 16:49:08,075 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2024-10-13 16:49:08,076 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 174 flow [2024-10-13 16:49:08,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:08,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:08,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:08,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:49:08,077 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:08,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1459154219, now seen corresponding path program 1 times [2024-10-13 16:49:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312442820] [2024-10-13 16:49:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:08,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312442820] [2024-10-13 16:49:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312442820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972226362] [2024-10-13 16:49:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:08,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:08,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:08,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:49:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:08,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 16:49:08,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:08,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:49:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:08,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:08,626 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 [2024-10-13 16:49:08,631 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 [2024-10-13 16:49:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972226362] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:08,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:08,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:49:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254513865] [2024-10-13 16:49:08,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:08,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:49:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:49:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:49:08,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:49:08,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 174 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:08,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:08,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:49:08,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:09,014 INFO L124 PetriNetUnfolderBase]: 469/998 cut-off events. [2024-10-13 16:49:09,015 INFO L125 PetriNetUnfolderBase]: For 125/172 co-relation queries the response was YES. [2024-10-13 16:49:09,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 998 events. 469/998 cut-off events. For 125/172 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6046 event pairs, 118 based on Foata normal form. 0/678 useless extension candidates. Maximal degree in co-relation 1975. Up to 294 conditions per place. [2024-10-13 16:49:09,023 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 54 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-10-13 16:49:09,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 388 flow [2024-10-13 16:49:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:49:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:49:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-10-13 16:49:09,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-10-13 16:49:09,025 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 174 flow. Second operand 8 states and 181 transitions. [2024-10-13 16:49:09,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 388 flow [2024-10-13 16:49:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 362 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-10-13 16:49:09,028 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 227 flow [2024-10-13 16:49:09,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=227, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-13 16:49:09,029 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2024-10-13 16:49:09,029 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 227 flow [2024-10-13 16:49:09,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:09,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:09,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:09,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:49:09,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:09,235 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:09,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1459154218, now seen corresponding path program 1 times [2024-10-13 16:49:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683981327] [2024-10-13 16:49:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:09,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683981327] [2024-10-13 16:49:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683981327] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527429760] [2024-10-13 16:49:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:09,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:09,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:09,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:09,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:49:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:09,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 16:49:09,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:09,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:49:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:09,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:09,655 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 [2024-10-13 16:49:09,658 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 [2024-10-13 16:49:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527429760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:09,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:09,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-13 16:49:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921375625] [2024-10-13 16:49:09,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:09,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 16:49:09,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 16:49:09,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 16:49:09,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:49:09,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 227 flow. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:09,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:09,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:49:09,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:09,988 INFO L124 PetriNetUnfolderBase]: 440/941 cut-off events. [2024-10-13 16:49:09,989 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2024-10-13 16:49:09,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 941 events. 440/941 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5600 event pairs, 106 based on Foata normal form. 0/671 useless extension candidates. Maximal degree in co-relation 2122. Up to 245 conditions per place. [2024-10-13 16:49:09,995 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 53 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-10-13 16:49:09,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 413 flow [2024-10-13 16:49:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:49:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:49:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-10-13 16:49:09,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-13 16:49:09,997 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 227 flow. Second operand 8 states and 180 transitions. [2024-10-13 16:49:09,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 413 flow [2024-10-13 16:49:09,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 403 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:49:10,001 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 243 flow [2024-10-13 16:49:10,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-10-13 16:49:10,002 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-13 16:49:10,002 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 243 flow [2024-10-13 16:49:10,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:10,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:10,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:10,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:49:10,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:10,207 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:10,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1459154216, now seen corresponding path program 1 times [2024-10-13 16:49:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:10,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434548881] [2024-10-13 16:49:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:10,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434548881] [2024-10-13 16:49:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434548881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:10,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:10,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:49:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384239301] [2024-10-13 16:49:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:10,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:10,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:10,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:10,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:10,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:10,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:10,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:10,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:10,523 INFO L124 PetriNetUnfolderBase]: 606/1239 cut-off events. [2024-10-13 16:49:10,524 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-10-13 16:49:10,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 1239 events. 606/1239 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7544 event pairs, 168 based on Foata normal form. 0/943 useless extension candidates. Maximal degree in co-relation 2985. Up to 881 conditions per place. [2024-10-13 16:49:10,532 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 56 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-10-13 16:49:10,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 406 flow [2024-10-13 16:49:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-13 16:49:10,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-10-13 16:49:10,534 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 243 flow. Second operand 3 states and 86 transitions. [2024-10-13 16:49:10,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 406 flow [2024-10-13 16:49:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 391 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:10,538 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 255 flow [2024-10-13 16:49:10,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-10-13 16:49:10,539 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2024-10-13 16:49:10,539 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 255 flow [2024-10-13 16:49:10,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:10,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:10,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:10,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:49:10,541 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:10,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2119145569, now seen corresponding path program 1 times [2024-10-13 16:49:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:10,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584183079] [2024-10-13 16:49:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:10,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584183079] [2024-10-13 16:49:10,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584183079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854230534] [2024-10-13 16:49:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:10,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:10,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:49:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:10,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 16:49:10,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:10,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:49:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:10,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:10,974 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 [2024-10-13 16:49:10,979 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 [2024-10-13 16:49:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:10,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854230534] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:10,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:10,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:49:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355337520] [2024-10-13 16:49:10,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:10,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:49:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:49:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:49:11,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:49:11,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 255 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:11,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:11,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:49:11,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:11,392 INFO L124 PetriNetUnfolderBase]: 739/1546 cut-off events. [2024-10-13 16:49:11,393 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2024-10-13 16:49:11,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 1546 events. 739/1546 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9856 event pairs, 177 based on Foata normal form. 0/1202 useless extension candidates. Maximal degree in co-relation 3884. Up to 401 conditions per place. [2024-10-13 16:49:11,406 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 67 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-10-13 16:49:11,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 611 flow [2024-10-13 16:49:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:49:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:49:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-10-13 16:49:11,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-10-13 16:49:11,408 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 255 flow. Second operand 8 states and 179 transitions. [2024-10-13 16:49:11,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 611 flow [2024-10-13 16:49:11,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:11,413 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 325 flow [2024-10-13 16:49:11,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-10-13 16:49:11,415 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-10-13 16:49:11,415 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 325 flow [2024-10-13 16:49:11,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:11,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:11,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:11,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:49:11,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:11,618 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:11,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2119145568, now seen corresponding path program 1 times [2024-10-13 16:49:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498099465] [2024-10-13 16:49:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:11,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:11,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498099465] [2024-10-13 16:49:11,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498099465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:11,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163613274] [2024-10-13 16:49:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:11,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:11,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:11,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:11,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:49:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:11,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 16:49:11,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:11,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:49:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:11,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:12,042 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 [2024-10-13 16:49:12,046 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 [2024-10-13 16:49:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163613274] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:12,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:12,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-13 16:49:12,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262733023] [2024-10-13 16:49:12,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:12,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 16:49:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 16:49:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 16:49:12,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:49:12,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 325 flow. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:12,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:12,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:49:12,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:12,416 INFO L124 PetriNetUnfolderBase]: 698/1477 cut-off events. [2024-10-13 16:49:12,416 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2024-10-13 16:49:12,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 1477 events. 698/1477 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9377 event pairs, 177 based on Foata normal form. 0/1182 useless extension candidates. Maximal degree in co-relation 4286. Up to 401 conditions per place. [2024-10-13 16:49:12,450 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 66 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2024-10-13 16:49:12,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 95 transitions, 659 flow [2024-10-13 16:49:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:49:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:49:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-10-13 16:49:12,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-10-13 16:49:12,452 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 325 flow. Second operand 8 states and 178 transitions. [2024-10-13 16:49:12,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 95 transitions, 659 flow [2024-10-13 16:49:12,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 649 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:49:12,456 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 341 flow [2024-10-13 16:49:12,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=341, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-10-13 16:49:12,457 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-10-13 16:49:12,458 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 341 flow [2024-10-13 16:49:12,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:12,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:12,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:12,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:49:12,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:12,663 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:12,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -298597576, now seen corresponding path program 1 times [2024-10-13 16:49:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:12,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754641970] [2024-10-13 16:49:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754641970] [2024-10-13 16:49:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754641970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:12,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:12,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:12,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316956378] [2024-10-13 16:49:12,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:12,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:12,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:12,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:12,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:12,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:12,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:12,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:13,002 INFO L124 PetriNetUnfolderBase]: 829/1604 cut-off events. [2024-10-13 16:49:13,003 INFO L125 PetriNetUnfolderBase]: For 2142/2142 co-relation queries the response was YES. [2024-10-13 16:49:13,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 1604 events. 829/1604 cut-off events. For 2142/2142 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9770 event pairs, 424 based on Foata normal form. 60/1367 useless extension candidates. Maximal degree in co-relation 5022. Up to 993 conditions per place. [2024-10-13 16:49:13,061 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-10-13 16:49:13,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 707 flow [2024-10-13 16:49:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-13 16:49:13,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-10-13 16:49:13,063 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 341 flow. Second operand 4 states and 113 transitions. [2024-10-13 16:49:13,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 707 flow [2024-10-13 16:49:13,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:13,069 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 349 flow [2024-10-13 16:49:13,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-10-13 16:49:13,070 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-10-13 16:49:13,070 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 349 flow [2024-10-13 16:49:13,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:13,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:13,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:13,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:49:13,071 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:13,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:13,072 INFO L85 PathProgramCache]: Analyzing trace with hash 259391550, now seen corresponding path program 1 times [2024-10-13 16:49:13,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:13,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976772350] [2024-10-13 16:49:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:13,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:13,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976772350] [2024-10-13 16:49:13,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976772350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:13,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:13,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837330820] [2024-10-13 16:49:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:13,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:13,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:13,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:13,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:13,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:13,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:13,466 INFO L124 PetriNetUnfolderBase]: 795/1514 cut-off events. [2024-10-13 16:49:13,467 INFO L125 PetriNetUnfolderBase]: For 2588/2588 co-relation queries the response was YES. [2024-10-13 16:49:13,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5167 conditions, 1514 events. 795/1514 cut-off events. For 2588/2588 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9153 event pairs, 439 based on Foata normal form. 62/1304 useless extension candidates. Maximal degree in co-relation 5132. Up to 985 conditions per place. [2024-10-13 16:49:13,521 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2024-10-13 16:49:13,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 731 flow [2024-10-13 16:49:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-13 16:49:13,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-13 16:49:13,523 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 349 flow. Second operand 4 states and 111 transitions. [2024-10-13 16:49:13,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 731 flow [2024-10-13 16:49:13,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:13,528 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 364 flow [2024-10-13 16:49:13,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-10-13 16:49:13,529 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2024-10-13 16:49:13,529 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 364 flow [2024-10-13 16:49:13,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:13,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:13,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:13,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:49:13,531 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:13,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1908549138, now seen corresponding path program 1 times [2024-10-13 16:49:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939660277] [2024-10-13 16:49:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:13,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939660277] [2024-10-13 16:49:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939660277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:13,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327325236] [2024-10-13 16:49:13,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:13,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:13,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:13,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:13,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:13,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:13,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:14,055 INFO L124 PetriNetUnfolderBase]: 1105/2102 cut-off events. [2024-10-13 16:49:14,055 INFO L125 PetriNetUnfolderBase]: For 3708/3708 co-relation queries the response was YES. [2024-10-13 16:49:14,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 2102 events. 1105/2102 cut-off events. For 3708/3708 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12896 event pairs, 298 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 7352. Up to 768 conditions per place. [2024-10-13 16:49:14,080 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 91 selfloop transitions, 18 changer transitions 0/119 dead transitions. [2024-10-13 16:49:14,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 904 flow [2024-10-13 16:49:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-10-13 16:49:14,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-13 16:49:14,081 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 364 flow. Second operand 5 states and 138 transitions. [2024-10-13 16:49:14,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 904 flow [2024-10-13 16:49:14,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:14,090 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 514 flow [2024-10-13 16:49:14,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-13 16:49:14,091 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 36 predicate places. [2024-10-13 16:49:14,091 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 514 flow [2024-10-13 16:49:14,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:14,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:14,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:14,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:49:14,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:14,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -317726813, now seen corresponding path program 1 times [2024-10-13 16:49:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:14,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386465268] [2024-10-13 16:49:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386465268] [2024-10-13 16:49:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386465268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:14,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:14,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484696077] [2024-10-13 16:49:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:14,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:14,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:14,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:14,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:14,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:14,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:14,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:14,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:14,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:14,617 INFO L124 PetriNetUnfolderBase]: 1045/2065 cut-off events. [2024-10-13 16:49:14,617 INFO L125 PetriNetUnfolderBase]: For 6275/6275 co-relation queries the response was YES. [2024-10-13 16:49:14,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 2065 events. 1045/2065 cut-off events. For 6275/6275 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12909 event pairs, 270 based on Foata normal form. 70/2115 useless extension candidates. Maximal degree in co-relation 7905. Up to 692 conditions per place. [2024-10-13 16:49:14,635 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 93 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-10-13 16:49:14,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 1127 flow [2024-10-13 16:49:14,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-10-13 16:49:14,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-10-13 16:49:14,638 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 514 flow. Second operand 5 states and 137 transitions. [2024-10-13 16:49:14,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 1127 flow [2024-10-13 16:49:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1127 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:49:14,648 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 793 flow [2024-10-13 16:49:14,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-10-13 16:49:14,648 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2024-10-13 16:49:14,649 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 793 flow [2024-10-13 16:49:14,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:14,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:14,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:14,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:49:14,649 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:14,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1476180032, now seen corresponding path program 1 times [2024-10-13 16:49:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114033698] [2024-10-13 16:49:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114033698] [2024-10-13 16:49:14,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114033698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:14,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:14,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40937255] [2024-10-13 16:49:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:14,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:14,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:14,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 793 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:14,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:14,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:14,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:15,098 INFO L124 PetriNetUnfolderBase]: 915/1847 cut-off events. [2024-10-13 16:49:15,099 INFO L125 PetriNetUnfolderBase]: For 8505/8505 co-relation queries the response was YES. [2024-10-13 16:49:15,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1847 events. 915/1847 cut-off events. For 8505/8505 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11345 event pairs, 180 based on Foata normal form. 60/1865 useless extension candidates. Maximal degree in co-relation 7451. Up to 634 conditions per place. [2024-10-13 16:49:15,116 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 100 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2024-10-13 16:49:15,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 126 transitions, 1204 flow [2024-10-13 16:49:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-13 16:49:15,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-10-13 16:49:15,118 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 793 flow. Second operand 5 states and 134 transitions. [2024-10-13 16:49:15,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 126 transitions, 1204 flow [2024-10-13 16:49:15,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 126 transitions, 1177 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:15,133 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 673 flow [2024-10-13 16:49:15,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=673, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-10-13 16:49:15,134 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 45 predicate places. [2024-10-13 16:49:15,134 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 673 flow [2024-10-13 16:49:15,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:15,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:15,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:15,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:49:15,134 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:15,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1476180031, now seen corresponding path program 1 times [2024-10-13 16:49:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:15,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807287288] [2024-10-13 16:49:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807287288] [2024-10-13 16:49:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807287288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215894679] [2024-10-13 16:49:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:15,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:15,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:15,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:15,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:15,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:15,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:15,501 INFO L124 PetriNetUnfolderBase]: 789/1572 cut-off events. [2024-10-13 16:49:15,501 INFO L125 PetriNetUnfolderBase]: For 6406/6409 co-relation queries the response was YES. [2024-10-13 16:49:15,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6409 conditions, 1572 events. 789/1572 cut-off events. For 6406/6409 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9042 event pairs, 135 based on Foata normal form. 59/1604 useless extension candidates. Maximal degree in co-relation 6360. Up to 466 conditions per place. [2024-10-13 16:49:15,523 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 86 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-10-13 16:49:15,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 111 transitions, 1004 flow [2024-10-13 16:49:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-13 16:49:15,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-10-13 16:49:15,525 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 673 flow. Second operand 5 states and 131 transitions. [2024-10-13 16:49:15,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 111 transitions, 1004 flow [2024-10-13 16:49:15,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 908 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-13 16:49:15,542 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 487 flow [2024-10-13 16:49:15,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=487, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-10-13 16:49:15,543 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 39 predicate places. [2024-10-13 16:49:15,543 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 487 flow [2024-10-13 16:49:15,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:15,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:15,544 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:15,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:49:15,544 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:15,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -642493439, now seen corresponding path program 1 times [2024-10-13 16:49:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888894984] [2024-10-13 16:49:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:15,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:15,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888894984] [2024-10-13 16:49:15,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888894984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:15,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024954062] [2024-10-13 16:49:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:15,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:15,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:15,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:15,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:49:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:15,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:49:15,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:15,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:16,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024954062] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:16,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:16,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 16:49:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678010742] [2024-10-13 16:49:16,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:16,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 16:49:16,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 16:49:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:49:16,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:49:16,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 487 flow. Second operand has 20 states, 20 states have (on average 11.55) internal successors, (231), 20 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:16,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:16,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:49:16,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:16,826 INFO L124 PetriNetUnfolderBase]: 1308/2588 cut-off events. [2024-10-13 16:49:16,826 INFO L125 PetriNetUnfolderBase]: For 7794/7829 co-relation queries the response was YES. [2024-10-13 16:49:16,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 2588 events. 1308/2588 cut-off events. For 7794/7829 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 16209 event pairs, 689 based on Foata normal form. 75/2591 useless extension candidates. Maximal degree in co-relation 9812. Up to 1507 conditions per place. [2024-10-13 16:49:16,859 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 110 selfloop transitions, 17 changer transitions 8/151 dead transitions. [2024-10-13 16:49:16,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 151 transitions, 1323 flow [2024-10-13 16:49:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-10-13 16:49:16,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-10-13 16:49:16,861 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 487 flow. Second operand 10 states and 182 transitions. [2024-10-13 16:49:16,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 151 transitions, 1323 flow [2024-10-13 16:49:16,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 1233 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:49:16,876 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 565 flow [2024-10-13 16:49:16,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=565, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2024-10-13 16:49:16,877 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 48 predicate places. [2024-10-13 16:49:16,877 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 565 flow [2024-10-13 16:49:16,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.55) internal successors, (231), 20 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:16,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:16,878 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:49:16,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:49:17,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:17,079 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:17,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash 339443379, now seen corresponding path program 2 times [2024-10-13 16:49:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:17,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292298274] [2024-10-13 16:49:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:17,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292298274] [2024-10-13 16:49:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292298274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022598382] [2024-10-13 16:49:17,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:17,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:17,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:17,214 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:17,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:49:17,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:17,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:17,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:49:17,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:49:17,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:49:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022598382] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:17,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:17,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:49:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094122196] [2024-10-13 16:49:17,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:17,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:49:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:49:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:49:17,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:17,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 565 flow. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:17,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:17,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:17,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:17,825 INFO L124 PetriNetUnfolderBase]: 1049/2255 cut-off events. [2024-10-13 16:49:17,825 INFO L125 PetriNetUnfolderBase]: For 8189/8248 co-relation queries the response was YES. [2024-10-13 16:49:17,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 2255 events. 1049/2255 cut-off events. For 8189/8248 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15009 event pairs, 666 based on Foata normal form. 29/2184 useless extension candidates. Maximal degree in co-relation 8790. Up to 1722 conditions per place. [2024-10-13 16:49:17,853 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 18 changer transitions 0/78 dead transitions. [2024-10-13 16:49:17,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 78 transitions, 699 flow [2024-10-13 16:49:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 221 transitions. [2024-10-13 16:49:17,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3288690476190476 [2024-10-13 16:49:17,856 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 565 flow. Second operand 14 states and 221 transitions. [2024-10-13 16:49:17,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 78 transitions, 699 flow [2024-10-13 16:49:17,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 78 transitions, 668 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-13 16:49:17,872 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 586 flow [2024-10-13 16:49:17,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=14, PETRI_FLOW=586, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-10-13 16:49:17,874 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2024-10-13 16:49:17,874 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 586 flow [2024-10-13 16:49:17,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:17,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:17,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:17,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:18,075 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,SelfDestructingSolverStorable17 [2024-10-13 16:49:18,076 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:18,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash 888139595, now seen corresponding path program 1 times [2024-10-13 16:49:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449848420] [2024-10-13 16:49:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449848420] [2024-10-13 16:49:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449848420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407902194] [2024-10-13 16:49:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:18,225 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) [2024-10-13 16:49:18,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:49:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:18,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:49:18,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:18,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:18,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407902194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:18,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:18,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 16:49:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458749756] [2024-10-13 16:49:18,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:18,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 16:49:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 16:49:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:49:18,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:49:18,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 586 flow. Second operand has 20 states, 20 states have (on average 11.65) internal successors, (233), 20 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:18,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:18,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:49:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:19,186 INFO L124 PetriNetUnfolderBase]: 1117/2197 cut-off events. [2024-10-13 16:49:19,186 INFO L125 PetriNetUnfolderBase]: For 7221/7297 co-relation queries the response was YES. [2024-10-13 16:49:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8587 conditions, 2197 events. 1117/2197 cut-off events. For 7221/7297 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13128 event pairs, 666 based on Foata normal form. 47/2233 useless extension candidates. Maximal degree in co-relation 6678. Up to 1486 conditions per place. [2024-10-13 16:49:19,205 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 12 changer transitions 51/122 dead transitions. [2024-10-13 16:49:19,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 122 transitions, 1136 flow [2024-10-13 16:49:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-10-13 16:49:19,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-10-13 16:49:19,207 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 586 flow. Second operand 10 states and 170 transitions. [2024-10-13 16:49:19,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 122 transitions, 1136 flow [2024-10-13 16:49:19,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 122 transitions, 1060 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-10-13 16:49:19,222 INFO L231 Difference]: Finished difference. Result has 100 places, 71 transitions, 469 flow [2024-10-13 16:49:19,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=469, PETRI_PLACES=100, PETRI_TRANSITIONS=71} [2024-10-13 16:49:19,223 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2024-10-13 16:49:19,223 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 71 transitions, 469 flow [2024-10-13 16:49:19,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.65) internal successors, (233), 20 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:19,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:19,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:19,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:19,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:19,425 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:19,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1628000086, now seen corresponding path program 2 times [2024-10-13 16:49:19,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:19,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302493674] [2024-10-13 16:49:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302493674] [2024-10-13 16:49:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302493674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309700250] [2024-10-13 16:49:19,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:19,699 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) [2024-10-13 16:49:19,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:49:19,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:49:19,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:19,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-13 16:49:19,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:19,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:49:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:19,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:19,994 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 [2024-10-13 16:49:19,998 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 20 treesize of output 16 [2024-10-13 16:49:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:20,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309700250] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:20,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:20,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:49:20,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101878748] [2024-10-13 16:49:20,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:20,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:49:20,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:49:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:49:20,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:49:20,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 71 transitions, 469 flow. Second operand has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:20,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:20,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:49:20,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:20,867 INFO L124 PetriNetUnfolderBase]: 1265/2564 cut-off events. [2024-10-13 16:49:20,867 INFO L125 PetriNetUnfolderBase]: For 7917/8003 co-relation queries the response was YES. [2024-10-13 16:49:20,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9720 conditions, 2564 events. 1265/2564 cut-off events. For 7917/8003 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16046 event pairs, 257 based on Foata normal form. 50/2597 useless extension candidates. Maximal degree in co-relation 9624. Up to 658 conditions per place. [2024-10-13 16:49:20,895 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 141 selfloop transitions, 22 changer transitions 0/180 dead transitions. [2024-10-13 16:49:20,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 180 transitions, 1547 flow [2024-10-13 16:49:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 255 transitions. [2024-10-13 16:49:20,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-10-13 16:49:20,897 INFO L175 Difference]: Start difference. First operand has 100 places, 71 transitions, 469 flow. Second operand 14 states and 255 transitions. [2024-10-13 16:49:20,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 180 transitions, 1547 flow [2024-10-13 16:49:20,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 1423 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-10-13 16:49:20,913 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 524 flow [2024-10-13 16:49:20,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=524, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-10-13 16:49:20,914 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2024-10-13 16:49:20,914 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 524 flow [2024-10-13 16:49:20,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:20,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:20,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:20,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:21,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:21,120 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:21,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1628000085, now seen corresponding path program 1 times [2024-10-13 16:49:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243274192] [2024-10-13 16:49:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:21,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:21,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243274192] [2024-10-13 16:49:21,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243274192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:21,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771299417] [2024-10-13 16:49:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:21,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:21,384 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:21,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:49:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:21,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-13 16:49:21,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:21,514 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 19 treesize of output 1 [2024-10-13 16:49:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:21,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:21,724 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 [2024-10-13 16:49:21,727 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 24 treesize of output 20 [2024-10-13 16:49:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771299417] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:21,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:21,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-13 16:49:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567482034] [2024-10-13 16:49:21,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:21,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:49:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:21,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:49:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-10-13 16:49:21,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:49:21,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 524 flow. Second operand has 23 states, 23 states have (on average 12.434782608695652) internal successors, (286), 23 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:21,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:21,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:49:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:22,641 INFO L124 PetriNetUnfolderBase]: 1206/2465 cut-off events. [2024-10-13 16:49:22,642 INFO L125 PetriNetUnfolderBase]: For 8622/8636 co-relation queries the response was YES. [2024-10-13 16:49:22,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9390 conditions, 2465 events. 1206/2465 cut-off events. For 8622/8636 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15357 event pairs, 257 based on Foata normal form. 50/2498 useless extension candidates. Maximal degree in co-relation 8337. Up to 559 conditions per place. [2024-10-13 16:49:22,665 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 140 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-10-13 16:49:22,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 179 transitions, 1482 flow [2024-10-13 16:49:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 254 transitions. [2024-10-13 16:49:22,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-10-13 16:49:22,667 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 524 flow. Second operand 14 states and 254 transitions. [2024-10-13 16:49:22,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 179 transitions, 1482 flow [2024-10-13 16:49:22,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1441 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-13 16:49:22,683 INFO L231 Difference]: Finished difference. Result has 98 places, 75 transitions, 519 flow [2024-10-13 16:49:22,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=519, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2024-10-13 16:49:22,686 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 50 predicate places. [2024-10-13 16:49:22,686 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 519 flow [2024-10-13 16:49:22,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.434782608695652) internal successors, (286), 23 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:22,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:22,686 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:22,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 16:49:22,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 16:49:22,887 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:22,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash 989030752, now seen corresponding path program 2 times [2024-10-13 16:49:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263965994] [2024-10-13 16:49:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:22,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:23,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263965994] [2024-10-13 16:49:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263965994] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:23,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681271024] [2024-10-13 16:49:23,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:23,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:23,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:23,212 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:23,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:49:23,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:49:23,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:23,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 16:49:23,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:23,353 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 19 treesize of output 1 [2024-10-13 16:49:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:23,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:23,583 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 [2024-10-13 16:49:23,587 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 24 treesize of output 20 [2024-10-13 16:49:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681271024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:23,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-13 16:49:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649048457] [2024-10-13 16:49:23,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:23,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:49:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:49:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-10-13 16:49:23,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:49:23,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 519 flow. Second operand has 23 states, 23 states have (on average 12.695652173913043) internal successors, (292), 23 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:23,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:23,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:49:23,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:24,537 INFO L124 PetriNetUnfolderBase]: 1779/3531 cut-off events. [2024-10-13 16:49:24,537 INFO L125 PetriNetUnfolderBase]: For 14122/14148 co-relation queries the response was YES. [2024-10-13 16:49:24,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 3531 events. 1779/3531 cut-off events. For 14122/14148 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 22752 event pairs, 372 based on Foata normal form. 72/3543 useless extension candidates. Maximal degree in co-relation 8464. Up to 905 conditions per place. [2024-10-13 16:49:24,577 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 162 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-10-13 16:49:24,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 201 transitions, 2056 flow [2024-10-13 16:49:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-10-13 16:49:24,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-10-13 16:49:24,579 INFO L175 Difference]: Start difference. First operand has 98 places, 75 transitions, 519 flow. Second operand 14 states and 249 transitions. [2024-10-13 16:49:24,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 201 transitions, 2056 flow [2024-10-13 16:49:24,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 201 transitions, 1936 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-13 16:49:24,602 INFO L231 Difference]: Finished difference. Result has 102 places, 80 transitions, 592 flow [2024-10-13 16:49:24,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=592, PETRI_PLACES=102, PETRI_TRANSITIONS=80} [2024-10-13 16:49:24,603 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 54 predicate places. [2024-10-13 16:49:24,603 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 80 transitions, 592 flow [2024-10-13 16:49:24,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.695652173913043) internal successors, (292), 23 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:24,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:24,603 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:24,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 16:49:24,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 16:49:24,808 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:24,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 989030751, now seen corresponding path program 1 times [2024-10-13 16:49:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502933885] [2024-10-13 16:49:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502933885] [2024-10-13 16:49:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502933885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:25,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114183115] [2024-10-13 16:49:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:25,117 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:25,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:49:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:25,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 16:49:25,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:25,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:49:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:25,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:25,396 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 [2024-10-13 16:49:25,399 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 20 treesize of output 16 [2024-10-13 16:49:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114183115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:25,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:25,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:49:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283722344] [2024-10-13 16:49:25,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:25,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:49:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:49:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:49:25,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:49:25,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 80 transitions, 592 flow. Second operand has 19 states, 19 states have (on average 12.578947368421053) internal successors, (239), 19 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:25,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:25,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:49:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:26,252 INFO L124 PetriNetUnfolderBase]: 1697/3395 cut-off events. [2024-10-13 16:49:26,252 INFO L125 PetriNetUnfolderBase]: For 14730/14750 co-relation queries the response was YES. [2024-10-13 16:49:26,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14019 conditions, 3395 events. 1697/3395 cut-off events. For 14730/14750 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 21777 event pairs, 372 based on Foata normal form. 66/3401 useless extension candidates. Maximal degree in co-relation 8590. Up to 769 conditions per place. [2024-10-13 16:49:26,276 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 161 selfloop transitions, 22 changer transitions 0/200 dead transitions. [2024-10-13 16:49:26,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 200 transitions, 1995 flow [2024-10-13 16:49:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 248 transitions. [2024-10-13 16:49:26,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-10-13 16:49:26,279 INFO L175 Difference]: Start difference. First operand has 102 places, 80 transitions, 592 flow. Second operand 14 states and 248 transitions. [2024-10-13 16:49:26,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 200 transitions, 1995 flow [2024-10-13 16:49:26,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 200 transitions, 1954 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-13 16:49:26,306 INFO L231 Difference]: Finished difference. Result has 106 places, 79 transitions, 587 flow [2024-10-13 16:49:26,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=587, PETRI_PLACES=106, PETRI_TRANSITIONS=79} [2024-10-13 16:49:26,307 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2024-10-13 16:49:26,307 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 79 transitions, 587 flow [2024-10-13 16:49:26,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.578947368421053) internal successors, (239), 19 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:26,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:26,308 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:26,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:26,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 16:49:26,509 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:26,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 980563640, now seen corresponding path program 1 times [2024-10-13 16:49:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189324404] [2024-10-13 16:49:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:26,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189324404] [2024-10-13 16:49:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189324404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437331201] [2024-10-13 16:49:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:26,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:26,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:26,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 16:49:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:26,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:26,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:26,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437331201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:49:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376171124] [2024-10-13 16:49:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:26,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:26,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:26,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 79 transitions, 587 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:26,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:26,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:26,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:27,151 INFO L124 PetriNetUnfolderBase]: 1503/3151 cut-off events. [2024-10-13 16:49:27,151 INFO L125 PetriNetUnfolderBase]: For 14269/14295 co-relation queries the response was YES. [2024-10-13 16:49:27,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13010 conditions, 3151 events. 1503/3151 cut-off events. For 14269/14295 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20532 event pairs, 201 based on Foata normal form. 144/3282 useless extension candidates. Maximal degree in co-relation 12454. Up to 1030 conditions per place. [2024-10-13 16:49:27,175 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 135 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2024-10-13 16:49:27,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 163 transitions, 1607 flow [2024-10-13 16:49:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-13 16:49:27,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-10-13 16:49:27,177 INFO L175 Difference]: Start difference. First operand has 106 places, 79 transitions, 587 flow. Second operand 6 states and 147 transitions. [2024-10-13 16:49:27,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 163 transitions, 1607 flow [2024-10-13 16:49:27,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1514 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-13 16:49:27,199 INFO L231 Difference]: Finished difference. Result has 99 places, 78 transitions, 574 flow [2024-10-13 16:49:27,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=574, PETRI_PLACES=99, PETRI_TRANSITIONS=78} [2024-10-13 16:49:27,200 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 51 predicate places. [2024-10-13 16:49:27,200 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 78 transitions, 574 flow [2024-10-13 16:49:27,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:27,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:27,201 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:27,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 16:49:27,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:27,405 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:27,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash 332702396, now seen corresponding path program 1 times [2024-10-13 16:49:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:27,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076209192] [2024-10-13 16:49:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:27,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:27,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076209192] [2024-10-13 16:49:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076209192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:27,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944936587] [2024-10-13 16:49:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:27,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:27,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:27,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:27,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 16:49:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:27,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:27,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:27,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944936587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:27,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:27,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:49:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649274229] [2024-10-13 16:49:27,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:27,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:27,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:27,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:27,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 78 transitions, 574 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:27,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:27,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:27,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:28,335 INFO L124 PetriNetUnfolderBase]: 2507/5081 cut-off events. [2024-10-13 16:49:28,335 INFO L125 PetriNetUnfolderBase]: For 25486/25512 co-relation queries the response was YES. [2024-10-13 16:49:28,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21998 conditions, 5081 events. 2507/5081 cut-off events. For 25486/25512 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 34077 event pairs, 453 based on Foata normal form. 204/5204 useless extension candidates. Maximal degree in co-relation 20754. Up to 1476 conditions per place. [2024-10-13 16:49:28,366 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 231 selfloop transitions, 17 changer transitions 0/265 dead transitions. [2024-10-13 16:49:28,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 265 transitions, 2589 flow [2024-10-13 16:49:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-10-13 16:49:28,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5354166666666667 [2024-10-13 16:49:28,367 INFO L175 Difference]: Start difference. First operand has 99 places, 78 transitions, 574 flow. Second operand 10 states and 257 transitions. [2024-10-13 16:49:28,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 265 transitions, 2589 flow [2024-10-13 16:49:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 265 transitions, 2526 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-13 16:49:28,401 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 677 flow [2024-10-13 16:49:28,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=677, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2024-10-13 16:49:28,401 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 57 predicate places. [2024-10-13 16:49:28,401 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 677 flow [2024-10-13 16:49:28,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:28,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:28,402 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:28,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:28,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:28,603 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:28,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:28,605 INFO L85 PathProgramCache]: Analyzing trace with hash 740206206, now seen corresponding path program 1 times [2024-10-13 16:49:28,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:28,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118094730] [2024-10-13 16:49:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:28,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:28,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118094730] [2024-10-13 16:49:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118094730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:28,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823540746] [2024-10-13 16:49:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:28,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:28,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:28,682 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:28,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 16:49:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:28,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:28,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:28,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823540746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:49:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731800932] [2024-10-13 16:49:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:28,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:28,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:28,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 677 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:28,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:28,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:28,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:29,511 INFO L124 PetriNetUnfolderBase]: 2805/5403 cut-off events. [2024-10-13 16:49:29,511 INFO L125 PetriNetUnfolderBase]: For 27867/27909 co-relation queries the response was YES. [2024-10-13 16:49:29,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23223 conditions, 5403 events. 2805/5403 cut-off events. For 27867/27909 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 35546 event pairs, 428 based on Foata normal form. 242/5616 useless extension candidates. Maximal degree in co-relation 18288. Up to 1907 conditions per place. [2024-10-13 16:49:29,548 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 181 selfloop transitions, 11 changer transitions 0/208 dead transitions. [2024-10-13 16:49:29,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 208 transitions, 2245 flow [2024-10-13 16:49:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-10-13 16:49:29,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-10-13 16:49:29,549 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 677 flow. Second operand 6 states and 143 transitions. [2024-10-13 16:49:29,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 208 transitions, 2245 flow [2024-10-13 16:49:29,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 208 transitions, 2195 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:29,581 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 685 flow [2024-10-13 16:49:29,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-10-13 16:49:29,581 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2024-10-13 16:49:29,582 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 685 flow [2024-10-13 16:49:29,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:29,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:29,582 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:49:29,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:29,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 16:49:29,783 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:29,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1899442304, now seen corresponding path program 2 times [2024-10-13 16:49:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:29,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180222078] [2024-10-13 16:49:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:29,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:29,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180222078] [2024-10-13 16:49:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180222078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:29,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105610420] [2024-10-13 16:49:29,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:29,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:29,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:29,972 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:29,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 16:49:30,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:49:30,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:30,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 16:49:30,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:30,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:30,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105610420] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:30,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:30,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-10-13 16:49:30,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743820072] [2024-10-13 16:49:30,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:30,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 16:49:30,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:30,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 16:49:30,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2024-10-13 16:49:30,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:49:30,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 685 flow. Second operand has 30 states, 30 states have (on average 11.5) internal successors, (345), 30 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:30,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:30,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:49:30,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:31,799 INFO L124 PetriNetUnfolderBase]: 3852/7370 cut-off events. [2024-10-13 16:49:31,800 INFO L125 PetriNetUnfolderBase]: For 37487/37518 co-relation queries the response was YES. [2024-10-13 16:49:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33173 conditions, 7370 events. 3852/7370 cut-off events. For 37487/37518 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 49385 event pairs, 1949 based on Foata normal form. 89/7369 useless extension candidates. Maximal degree in co-relation 25937. Up to 4498 conditions per place. [2024-10-13 16:49:31,849 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 183 selfloop transitions, 23 changer transitions 12/233 dead transitions. [2024-10-13 16:49:31,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 233 transitions, 2404 flow [2024-10-13 16:49:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 247 transitions. [2024-10-13 16:49:31,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36755952380952384 [2024-10-13 16:49:31,850 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 685 flow. Second operand 14 states and 247 transitions. [2024-10-13 16:49:31,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 233 transitions, 2404 flow [2024-10-13 16:49:31,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 233 transitions, 2173 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-10-13 16:49:31,904 INFO L231 Difference]: Finished difference. Result has 119 places, 97 transitions, 840 flow [2024-10-13 16:49:31,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=840, PETRI_PLACES=119, PETRI_TRANSITIONS=97} [2024-10-13 16:49:31,905 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 71 predicate places. [2024-10-13 16:49:31,905 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 97 transitions, 840 flow [2024-10-13 16:49:31,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.5) internal successors, (345), 30 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:31,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:31,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:31,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:32,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 16:49:32,106 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:32,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1471556550, now seen corresponding path program 1 times [2024-10-13 16:49:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:32,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066814568] [2024-10-13 16:49:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:32,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:32,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066814568] [2024-10-13 16:49:32,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066814568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:32,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266547161] [2024-10-13 16:49:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:32,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:32,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:32,167 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:32,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 16:49:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:32,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:32,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:32,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266547161] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:32,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:32,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:49:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780897525] [2024-10-13 16:49:32,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:32,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:32,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:32,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:49:32,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 97 transitions, 840 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:32,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:32,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:49:32,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:33,874 INFO L124 PetriNetUnfolderBase]: 6275/12190 cut-off events. [2024-10-13 16:49:33,874 INFO L125 PetriNetUnfolderBase]: For 69008/69116 co-relation queries the response was YES. [2024-10-13 16:49:33,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53464 conditions, 12190 events. 6275/12190 cut-off events. For 69008/69116 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 89455 event pairs, 1175 based on Foata normal form. 472/12552 useless extension candidates. Maximal degree in co-relation 42241. Up to 3627 conditions per place. [2024-10-13 16:49:33,992 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 403 selfloop transitions, 17 changer transitions 0/436 dead transitions. [2024-10-13 16:49:33,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 436 transitions, 5380 flow [2024-10-13 16:49:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-10-13 16:49:33,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-10-13 16:49:33,994 INFO L175 Difference]: Start difference. First operand has 119 places, 97 transitions, 840 flow. Second operand 10 states and 249 transitions. [2024-10-13 16:49:33,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 436 transitions, 5380 flow [2024-10-13 16:49:34,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 436 transitions, 5319 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-10-13 16:49:34,065 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 938 flow [2024-10-13 16:49:34,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=938, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-10-13 16:49:34,065 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 76 predicate places. [2024-10-13 16:49:34,065 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 938 flow [2024-10-13 16:49:34,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:34,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:34,066 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:34,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:34,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 16:49:34,266 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:34,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1121624330, now seen corresponding path program 2 times [2024-10-13 16:49:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193795592] [2024-10-13 16:49:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:34,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193795592] [2024-10-13 16:49:34,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193795592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686466156] [2024-10-13 16:49:34,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:34,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:34,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:34,467 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:34,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 16:49:34,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:49:34,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:34,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 16:49:34,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:34,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686466156] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:34,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:34,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-10-13 16:49:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419311521] [2024-10-13 16:49:34,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:34,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 16:49:34,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 16:49:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2024-10-13 16:49:35,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:49:35,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 938 flow. Second operand has 30 states, 30 states have (on average 11.566666666666666) internal successors, (347), 30 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:35,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:35,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:49:35,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:37,478 INFO L124 PetriNetUnfolderBase]: 5926/10999 cut-off events. [2024-10-13 16:49:37,478 INFO L125 PetriNetUnfolderBase]: For 65577/65748 co-relation queries the response was YES. [2024-10-13 16:49:37,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50763 conditions, 10999 events. 5926/10999 cut-off events. For 65577/65748 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 74481 event pairs, 3492 based on Foata normal form. 109/11081 useless extension candidates. Maximal degree in co-relation 43422. Up to 8188 conditions per place. [2024-10-13 16:49:37,545 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 69 selfloop transitions, 12 changer transitions 112/208 dead transitions. [2024-10-13 16:49:37,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 2345 flow [2024-10-13 16:49:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 230 transitions. [2024-10-13 16:49:37,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34226190476190477 [2024-10-13 16:49:37,546 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 938 flow. Second operand 14 states and 230 transitions. [2024-10-13 16:49:37,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 2345 flow [2024-10-13 16:49:37,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 208 transitions, 2325 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:37,626 INFO L231 Difference]: Finished difference. Result has 140 places, 96 transitions, 825 flow [2024-10-13 16:49:37,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=825, PETRI_PLACES=140, PETRI_TRANSITIONS=96} [2024-10-13 16:49:37,627 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 92 predicate places. [2024-10-13 16:49:37,627 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 96 transitions, 825 flow [2024-10-13 16:49:37,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.566666666666666) internal successors, (347), 30 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:37,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:37,627 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:49:37,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-13 16:49:37,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 16:49:37,828 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:37,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash 112141515, now seen corresponding path program 3 times [2024-10-13 16:49:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620952152] [2024-10-13 16:49:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:38,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:38,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620952152] [2024-10-13 16:49:38,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620952152] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875688268] [2024-10-13 16:49:38,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:49:38,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:38,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:38,344 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:38,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 16:49:38,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 16:49:38,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:38,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 16:49:38,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:38,605 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 [2024-10-13 16:49:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:39,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:39,844 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 [2024-10-13 16:49:39,848 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 [2024-10-13 16:49:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875688268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:40,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:40,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 40 [2024-10-13 16:49:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231388527] [2024-10-13 16:49:40,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:40,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-13 16:49:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-13 16:49:40,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1579, Unknown=0, NotChecked=0, Total=1722 [2024-10-13 16:49:40,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:49:40,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 96 transitions, 825 flow. Second operand has 42 states, 42 states have (on average 11.428571428571429) internal successors, (480), 42 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:40,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:40,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:49:40,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:48,421 INFO L124 PetriNetUnfolderBase]: 15164/27849 cut-off events. [2024-10-13 16:49:48,421 INFO L125 PetriNetUnfolderBase]: For 164299/164596 co-relation queries the response was YES. [2024-10-13 16:49:48,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128471 conditions, 27849 events. 15164/27849 cut-off events. For 164299/164596 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 222702 event pairs, 1777 based on Foata normal form. 832/28631 useless extension candidates. Maximal degree in co-relation 91627. Up to 4278 conditions per place. [2024-10-13 16:49:48,786 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 1036 selfloop transitions, 89 changer transitions 5/1145 dead transitions. [2024-10-13 16:49:48,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1145 transitions, 12750 flow [2024-10-13 16:49:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-13 16:49:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-13 16:49:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 875 transitions. [2024-10-13 16:49:48,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050925925925926 [2024-10-13 16:49:48,790 INFO L175 Difference]: Start difference. First operand has 140 places, 96 transitions, 825 flow. Second operand 45 states and 875 transitions. [2024-10-13 16:49:48,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 1145 transitions, 12750 flow [2024-10-13 16:49:49,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 1145 transitions, 11990 flow, removed 368 selfloop flow, removed 19 redundant places. [2024-10-13 16:49:49,467 INFO L231 Difference]: Finished difference. Result has 161 places, 153 transitions, 1558 flow [2024-10-13 16:49:49,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1558, PETRI_PLACES=161, PETRI_TRANSITIONS=153} [2024-10-13 16:49:49,468 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 113 predicate places. [2024-10-13 16:49:49,468 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 153 transitions, 1558 flow [2024-10-13 16:49:49,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.428571428571429) internal successors, (480), 42 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:49,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:49,469 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:49:49,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-13 16:49:49,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:49,669 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:49:49,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 112141516, now seen corresponding path program 3 times [2024-10-13 16:49:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:49,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209982197] [2024-10-13 16:49:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209982197] [2024-10-13 16:49:50,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209982197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439625112] [2024-10-13 16:49:50,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:49:50,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:50,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:50,052 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:50,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 16:49:50,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 16:49:50,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:50,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 16:49:50,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:50,251 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 [2024-10-13 16:49:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:50,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:51,138 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 [2024-10-13 16:49:51,148 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 [2024-10-13 16:49:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439625112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:51,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 40 [2024-10-13 16:49:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561183552] [2024-10-13 16:49:51,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:51,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-13 16:49:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-13 16:49:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2024-10-13 16:49:52,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:49:52,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 153 transitions, 1558 flow. Second operand has 42 states, 42 states have (on average 11.428571428571429) internal successors, (480), 42 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:52,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:52,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:49:52,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:59,117 INFO L124 PetriNetUnfolderBase]: 14034/25833 cut-off events. [2024-10-13 16:49:59,117 INFO L125 PetriNetUnfolderBase]: For 183203/183299 co-relation queries the response was YES. [2024-10-13 16:49:59,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126286 conditions, 25833 events. 14034/25833 cut-off events. For 183203/183299 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 204396 event pairs, 1529 based on Foata normal form. 826/26645 useless extension candidates. Maximal degree in co-relation 107645. Up to 3910 conditions per place. [2024-10-13 16:49:59,379 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 1033 selfloop transitions, 88 changer transitions 5/1141 dead transitions. [2024-10-13 16:49:59,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1141 transitions, 12270 flow [2024-10-13 16:49:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-13 16:49:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-13 16:49:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 871 transitions. [2024-10-13 16:49:59,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40324074074074073 [2024-10-13 16:49:59,382 INFO L175 Difference]: Start difference. First operand has 161 places, 153 transitions, 1558 flow. Second operand 45 states and 871 transitions. [2024-10-13 16:49:59,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1141 transitions, 12270 flow [2024-10-13 16:49:59,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 1141 transitions, 12004 flow, removed 20 selfloop flow, removed 21 redundant places. [2024-10-13 16:49:59,934 INFO L231 Difference]: Finished difference. Result has 184 places, 151 transitions, 1470 flow [2024-10-13 16:49:59,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1470, PETRI_PLACES=184, PETRI_TRANSITIONS=151} [2024-10-13 16:49:59,934 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 136 predicate places. [2024-10-13 16:49:59,935 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 151 transitions, 1470 flow [2024-10-13 16:49:59,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.428571428571429) internal successors, (480), 42 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:59,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:59,935 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:59,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:00,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,136 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:50:00,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1512484501, now seen corresponding path program 3 times [2024-10-13 16:50:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136893658] [2024-10-13 16:50:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136893658] [2024-10-13 16:50:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136893658] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601042087] [2024-10-13 16:50:00,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:50:00,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:00,473 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:00,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 16:50:00,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 16:50:00,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:00,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-13 16:50:00,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:00,636 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 19 treesize of output 1 [2024-10-13 16:50:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:00,922 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 [2024-10-13 16:50:00,924 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 20 treesize of output 16 [2024-10-13 16:50:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601042087] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:00,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-10-13 16:50:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601448012] [2024-10-13 16:50:00,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:00,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-13 16:50:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-13 16:50:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 16:50:01,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:50:01,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 151 transitions, 1470 flow. Second operand has 33 states, 33 states have (on average 12.575757575757576) internal successors, (415), 33 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:01,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:01,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:50:01,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:04,644 INFO L124 PetriNetUnfolderBase]: 11495/22207 cut-off events. [2024-10-13 16:50:04,645 INFO L125 PetriNetUnfolderBase]: For 146830/146938 co-relation queries the response was YES. [2024-10-13 16:50:04,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105639 conditions, 22207 events. 11495/22207 cut-off events. For 146830/146938 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 178993 event pairs, 1933 based on Foata normal form. 331/22487 useless extension candidates. Maximal degree in co-relation 89860. Up to 4975 conditions per place. [2024-10-13 16:50:05,075 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 808 selfloop transitions, 30 changer transitions 0/857 dead transitions. [2024-10-13 16:50:05,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 857 transitions, 11258 flow [2024-10-13 16:50:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 16:50:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 16:50:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 334 transitions. [2024-10-13 16:50:05,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36622807017543857 [2024-10-13 16:50:05,077 INFO L175 Difference]: Start difference. First operand has 184 places, 151 transitions, 1470 flow. Second operand 19 states and 334 transitions. [2024-10-13 16:50:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 857 transitions, 11258 flow [2024-10-13 16:50:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 857 transitions, 9863 flow, removed 31 selfloop flow, removed 44 redundant places. [2024-10-13 16:50:05,371 INFO L231 Difference]: Finished difference. Result has 160 places, 154 transitions, 1397 flow [2024-10-13 16:50:05,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1397, PETRI_PLACES=160, PETRI_TRANSITIONS=154} [2024-10-13 16:50:05,372 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 112 predicate places. [2024-10-13 16:50:05,372 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 154 transitions, 1397 flow [2024-10-13 16:50:05,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.575757575757576) internal successors, (415), 33 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:05,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:05,372 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:05,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-13 16:50:05,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:05,573 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:50:05,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1512484502, now seen corresponding path program 3 times [2024-10-13 16:50:05,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139579318] [2024-10-13 16:50:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:05,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139579318] [2024-10-13 16:50:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139579318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:05,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727602813] [2024-10-13 16:50:05,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:50:05,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:05,946 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:05,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 16:50:06,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 16:50:06,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:06,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 16:50:06,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:06,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:06,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:06,339 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 [2024-10-13 16:50:06,341 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 24 treesize of output 20 [2024-10-13 16:50:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727602813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:06,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-13 16:50:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337570928] [2024-10-13 16:50:06,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:06,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-13 16:50:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-13 16:50:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-10-13 16:50:06,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:50:06,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 1397 flow. Second operand has 29 states, 29 states have (on average 12.482758620689655) internal successors, (362), 29 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:06,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:06,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:50:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:09,912 INFO L124 PetriNetUnfolderBase]: 11106/21515 cut-off events. [2024-10-13 16:50:09,912 INFO L125 PetriNetUnfolderBase]: For 148549/148657 co-relation queries the response was YES. [2024-10-13 16:50:10,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103286 conditions, 21515 events. 11106/21515 cut-off events. For 148549/148657 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 173039 event pairs, 1933 based on Foata normal form. 331/21705 useless extension candidates. Maximal degree in co-relation 76382. Up to 4975 conditions per place. [2024-10-13 16:50:10,124 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 807 selfloop transitions, 30 changer transitions 0/856 dead transitions. [2024-10-13 16:50:10,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 856 transitions, 9936 flow [2024-10-13 16:50:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 16:50:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 16:50:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 333 transitions. [2024-10-13 16:50:10,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3651315789473684 [2024-10-13 16:50:10,125 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 1397 flow. Second operand 19 states and 333 transitions. [2024-10-13 16:50:10,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 856 transitions, 9936 flow [2024-10-13 16:50:10,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 856 transitions, 9836 flow, removed 3 selfloop flow, removed 18 redundant places. [2024-10-13 16:50:10,562 INFO L231 Difference]: Finished difference. Result has 160 places, 153 transitions, 1348 flow [2024-10-13 16:50:10,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1348, PETRI_PLACES=160, PETRI_TRANSITIONS=153} [2024-10-13 16:50:10,563 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 112 predicate places. [2024-10-13 16:50:10,563 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 153 transitions, 1348 flow [2024-10-13 16:50:10,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.482758620689655) internal successors, (362), 29 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:10,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:10,564 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:10,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-13 16:50:10,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:10,764 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:50:10,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 643212737, now seen corresponding path program 4 times [2024-10-13 16:50:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237863459] [2024-10-13 16:50:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:10,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:11,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237863459] [2024-10-13 16:50:11,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237863459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827601109] [2024-10-13 16:50:11,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:50:11,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:11,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:11,057 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:11,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 16:50:11,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:50:11,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:11,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 16:50:11,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:11,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827601109] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:11,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-10-13 16:50:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792587150] [2024-10-13 16:50:11,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:11,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-13 16:50:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-13 16:50:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2024-10-13 16:50:11,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-10-13 16:50:11,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 153 transitions, 1348 flow. Second operand has 40 states, 40 states have (on average 11.525) internal successors, (461), 40 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:11,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:11,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-10-13 16:50:11,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:14,905 INFO L124 PetriNetUnfolderBase]: 10653/20157 cut-off events. [2024-10-13 16:50:14,906 INFO L125 PetriNetUnfolderBase]: For 111923/112069 co-relation queries the response was YES. [2024-10-13 16:50:15,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93519 conditions, 20157 events. 10653/20157 cut-off events. For 111923/112069 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 154626 event pairs, 5461 based on Foata normal form. 181/20265 useless extension candidates. Maximal degree in co-relation 69700. Up to 13038 conditions per place. [2024-10-13 16:50:15,084 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 298 selfloop transitions, 27 changer transitions 37/380 dead transitions. [2024-10-13 16:50:15,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 380 transitions, 4128 flow [2024-10-13 16:50:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 16:50:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 16:50:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 291 transitions. [2024-10-13 16:50:15,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-10-13 16:50:15,086 INFO L175 Difference]: Start difference. First operand has 160 places, 153 transitions, 1348 flow. Second operand 18 states and 291 transitions. [2024-10-13 16:50:15,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 380 transitions, 4128 flow [2024-10-13 16:50:15,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 380 transitions, 4049 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-10-13 16:50:15,306 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 1529 flow [2024-10-13 16:50:15,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1529, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2024-10-13 16:50:15,306 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 120 predicate places. [2024-10-13 16:50:15,306 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 1529 flow [2024-10-13 16:50:15,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 11.525) internal successors, (461), 40 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:15,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:15,307 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:15,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-13 16:50:15,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:15,508 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:50:15,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:15,508 INFO L85 PathProgramCache]: Analyzing trace with hash -483810154, now seen corresponding path program 5 times [2024-10-13 16:50:15,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:15,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278219685] [2024-10-13 16:50:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:15,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278219685] [2024-10-13 16:50:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278219685] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928658605] [2024-10-13 16:50:16,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 16:50:16,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:16,243 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:16,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 16:50:16,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-13 16:50:16,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:16,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-13 16:50:16,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:16,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:16,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:16,824 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 [2024-10-13 16:50:16,827 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 24 treesize of output 20 [2024-10-13 16:50:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928658605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:16,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:16,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-10-13 16:50:16,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144799339] [2024-10-13 16:50:16,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:16,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-13 16:50:16,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-13 16:50:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-10-13 16:50:17,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-13 16:50:17,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 1529 flow. Second operand has 39 states, 39 states have (on average 12.435897435897436) internal successors, (485), 39 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:17,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:17,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-13 16:50:17,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand