./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-queue-add-3.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 d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:46:16,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:46:17,055 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:46:17,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:46:17,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:46:17,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:46:17,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:46:17,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:46:17,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:46:17,083 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:46:17,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:46:17,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:46:17,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:46:17,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:46:17,084 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:46:17,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:46:17,085 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:46:17,086 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:46:17,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:46:17,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:46:17,087 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> d2c89f010e0f73e8ba7e81bb150b82b70d39c0827c0d616dd2c3347839d51e01 [2025-03-17 19:46:17,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:46:17,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:46:17,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:46:17,326 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:46:17,326 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:46:17,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2025-03-17 19:46:18,447 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/497a4fe78/7f4fb98164a34c8980966cb06542bf59/FLAG3954c8d4b [2025-03-17 19:46:18,648 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:46:18,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2025-03-17 19:46:18,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/497a4fe78/7f4fb98164a34c8980966cb06542bf59/FLAG3954c8d4b [2025-03-17 19:46:19,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/497a4fe78/7f4fb98164a34c8980966cb06542bf59 [2025-03-17 19:46:19,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:46:19,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:46:19,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:46:19,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:46:19,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:46:19,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629810d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19, skipping insertion in model container [2025-03-17 19:46:19,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:46:19,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:46:19,147 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:46:19,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:46:19,171 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:46:19,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19 WrapperNode [2025-03-17 19:46:19,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:46:19,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:46:19,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:46:19,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:46:19,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,194 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 246 [2025-03-17 19:46:19,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:46:19,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:46:19,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:46:19,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:46:19,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,211 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 19:46:19,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:46:19,224 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:46:19,224 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:46:19,224 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:46:19,229 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (1/1) ... [2025-03-17 19:46:19,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:46:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:19,257 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) [2025-03-17 19:46:19,259 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 [2025-03-17 19:46:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:46:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:46:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:46:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:46:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:46:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:46:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:46:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:46:19,278 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:46:19,358 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:46:19,360 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:46:19,730 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:46:19,730 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:46:19,959 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:46:19,960 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:46:19,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:19 BoogieIcfgContainer [2025-03-17 19:46:19,961 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:46:19,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:46:19,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:46:19,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:46:19,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:46:19" (1/3) ... [2025-03-17 19:46:19,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581b272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:46:19, skipping insertion in model container [2025-03-17 19:46:19,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:19" (2/3) ... [2025-03-17 19:46:19,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581b272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:46:19, skipping insertion in model container [2025-03-17 19:46:19,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:19" (3/3) ... [2025-03-17 19:46:19,968 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2025-03-17 19:46:19,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:46:19,980 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-3.wvr.c that has 4 procedures, 62 locations, 1 initial locations, 5 loop locations, and 20 error locations. [2025-03-17 19:46:19,980 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:46:20,032 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:46:20,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 68 transitions, 157 flow [2025-03-17 19:46:20,090 INFO L124 PetriNetUnfolderBase]: 7/65 cut-off events. [2025-03-17 19:46:20,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:46:20,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 7/65 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 215 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-03-17 19:46:20,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 68 transitions, 157 flow [2025-03-17 19:46:20,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 63 transitions, 141 flow [2025-03-17 19:46:20,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:46:20,112 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;@2cc1ed29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:46:20,112 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2025-03-17 19:46:20,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:46:20,118 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:46:20,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:46:20,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:20,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:46:20,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:20,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash 687185, now seen corresponding path program 1 times [2025-03-17 19:46:20,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817698747] [2025-03-17 19:46:20,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:20,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:46:20,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:46:20,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:20,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:20,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817698747] [2025-03-17 19:46:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817698747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:20,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:20,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54861840] [2025-03-17 19:46:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:20,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:20,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:20,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:20,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:20,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:20,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:20,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:20,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:20,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:20,927 INFO L124 PetriNetUnfolderBase]: 2220/3912 cut-off events. [2025-03-17 19:46:20,927 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2025-03-17 19:46:20,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7140 conditions, 3912 events. 2220/3912 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25360 event pairs, 1926 based on Foata normal form. 2/2887 useless extension candidates. Maximal degree in co-relation 6757. Up to 3019 conditions per place. [2025-03-17 19:46:20,955 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 38 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2025-03-17 19:46:20,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 229 flow [2025-03-17 19:46:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-17 19:46:20,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 19:46:20,969 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 141 flow. Second operand 4 states and 136 transitions. [2025-03-17 19:46:20,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 229 flow [2025-03-17 19:46:20,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:20,996 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 178 flow [2025-03-17 19:46:20,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2025-03-17 19:46:21,000 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2025-03-17 19:46:21,000 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 178 flow [2025-03-17 19:46:21,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:21,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:21,000 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:46:21,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:46:21,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:21,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1002316099, now seen corresponding path program 1 times [2025-03-17 19:46:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172022433] [2025-03-17 19:46:21,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:21,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:21,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:46:21,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:46:21,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:21,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:21,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172022433] [2025-03-17 19:46:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172022433] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088829052] [2025-03-17 19:46:21,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:21,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:21,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:21,155 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) [2025-03-17 19:46:21,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:46:21,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:46:21,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:46:21,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:21,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:21,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:21,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:21,262 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088829052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:21,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:21,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:46:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21791076] [2025-03-17 19:46:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:21,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:46:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:21,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:46:21,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:46:21,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:21,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2025-03-17 19:46:21,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:21,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:21,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:21,698 INFO L124 PetriNetUnfolderBase]: 2220/3910 cut-off events. [2025-03-17 19:46:21,698 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-03-17 19:46:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7095 conditions, 3910 events. 2220/3910 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25317 event pairs, 1926 based on Foata normal form. 2/2888 useless extension candidates. Maximal degree in co-relation 7045. Up to 3009 conditions per place. [2025-03-17 19:46:21,728 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 31 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2025-03-17 19:46:21,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 256 flow [2025-03-17 19:46:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:46:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:46:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2025-03-17 19:46:21,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2025-03-17 19:46:21,730 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 178 flow. Second operand 6 states and 165 transitions. [2025-03-17 19:46:21,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 256 flow [2025-03-17 19:46:21,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:46:21,733 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 194 flow [2025-03-17 19:46:21,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2025-03-17 19:46:21,734 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2025-03-17 19:46:21,734 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 194 flow [2025-03-17 19:46:21,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2025-03-17 19:46:21,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:21,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:21,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:46:21,940 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 [2025-03-17 19:46:21,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:21,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -979342399, now seen corresponding path program 1 times [2025-03-17 19:46:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283809005] [2025-03-17 19:46:21,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:21,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:21,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:21,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:21,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283809005] [2025-03-17 19:46:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283809005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:22,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:22,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:22,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913535430] [2025-03-17 19:46:22,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:22,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:22,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:22,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:22,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:22,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-03-17 19:46:22,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:22,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:22,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:22,419 INFO L124 PetriNetUnfolderBase]: 2360/4197 cut-off events. [2025-03-17 19:46:22,419 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2025-03-17 19:46:22,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 4197 events. 2360/4197 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27066 event pairs, 2053 based on Foata normal form. 101/3240 useless extension candidates. Maximal degree in co-relation 7049. Up to 3017 conditions per place. [2025-03-17 19:46:22,438 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 55 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2025-03-17 19:46:22,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 390 flow [2025-03-17 19:46:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:46:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:46:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2025-03-17 19:46:22,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2025-03-17 19:46:22,440 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 194 flow. Second operand 5 states and 184 transitions. [2025-03-17 19:46:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 390 flow [2025-03-17 19:46:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 348 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:22,442 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 207 flow [2025-03-17 19:46:22,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2025-03-17 19:46:22,445 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2025-03-17 19:46:22,445 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 207 flow [2025-03-17 19:46:22,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-03-17 19:46:22,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:22,445 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:46:22,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:46:22,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:22,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1007027404, now seen corresponding path program 1 times [2025-03-17 19:46:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260789648] [2025-03-17 19:46:22,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:22,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:22,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:22,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:22,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:22,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:22,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:22,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260789648] [2025-03-17 19:46:22,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260789648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:22,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933382656] [2025-03-17 19:46:22,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:22,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:22,527 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) [2025-03-17 19:46:22,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:46:22,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:22,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:22,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:22,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:22,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:22,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:22,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:22,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933382656] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:22,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:22,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:46:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541731958] [2025-03-17 19:46:22,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:22,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:46:22,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:22,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:46:22,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:46:22,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:22,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 207 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 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) [2025-03-17 19:46:22,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:22,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:22,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:23,002 INFO L124 PetriNetUnfolderBase]: 2325/4013 cut-off events. [2025-03-17 19:46:23,002 INFO L125 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2025-03-17 19:46:23,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 4013 events. 2325/4013 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24897 event pairs, 2053 based on Foata normal form. 9/3069 useless extension candidates. Maximal degree in co-relation 7612. Up to 3246 conditions per place. [2025-03-17 19:46:23,025 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 36 selfloop transitions, 27 changer transitions 0/80 dead transitions. [2025-03-17 19:46:23,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 417 flow [2025-03-17 19:46:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2025-03-17 19:46:23,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3926470588235294 [2025-03-17 19:46:23,028 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 207 flow. Second operand 10 states and 267 transitions. [2025-03-17 19:46:23,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 417 flow [2025-03-17 19:46:23,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 413 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:23,032 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 375 flow [2025-03-17 19:46:23,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=375, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2025-03-17 19:46:23,033 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2025-03-17 19:46:23,033 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 375 flow [2025-03-17 19:46:23,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 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) [2025-03-17 19:46:23,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:23,033 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:23,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:23,233 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 [2025-03-17 19:46:23,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:23,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -95949363, now seen corresponding path program 1 times [2025-03-17 19:46:23,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:23,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546823785] [2025-03-17 19:46:23,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:23,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:23,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:46:23,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:46:23,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:23,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:23,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:23,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546823785] [2025-03-17 19:46:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546823785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:23,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:46:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373758074] [2025-03-17 19:46:23,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:23,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:23,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:23,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:46:23,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:23,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-03-17 19:46:23,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:23,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:23,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:23,535 INFO L124 PetriNetUnfolderBase]: 2265/3933 cut-off events. [2025-03-17 19:46:23,536 INFO L125 PetriNetUnfolderBase]: For 508/508 co-relation queries the response was YES. [2025-03-17 19:46:23,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8306 conditions, 3933 events. 2265/3933 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24370 event pairs, 821 based on Foata normal form. 97/3065 useless extension candidates. Maximal degree in co-relation 8208. Up to 2372 conditions per place. [2025-03-17 19:46:23,551 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 75 selfloop transitions, 2 changer transitions 1/97 dead transitions. [2025-03-17 19:46:23,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 580 flow [2025-03-17 19:46:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2025-03-17 19:46:23,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2025-03-17 19:46:23,552 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 375 flow. Second operand 3 states and 126 transitions. [2025-03-17 19:46:23,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 580 flow [2025-03-17 19:46:23,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 544 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:23,558 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 345 flow [2025-03-17 19:46:23,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2025-03-17 19:46:23,558 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2025-03-17 19:46:23,558 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 345 flow [2025-03-17 19:46:23,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-03-17 19:46:23,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:23,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:23,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:46:23,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:23,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash 21542957, now seen corresponding path program 1 times [2025-03-17 19:46:23,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:23,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470492355] [2025-03-17 19:46:23,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:23,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:46:23,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:46:23,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:23,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470492355] [2025-03-17 19:46:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470492355] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284242215] [2025-03-17 19:46:23,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:23,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:23,687 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) [2025-03-17 19:46:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:46:23,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:46:23,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:46:23,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:23,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:23,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:23,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:23,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:23,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284242215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:23,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:23,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-17 19:46:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023822121] [2025-03-17 19:46:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:23,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:23,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:23,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:46:23,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:23,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-03-17 19:46:23,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:23,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:23,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:23,955 INFO L124 PetriNetUnfolderBase]: 1453/2591 cut-off events. [2025-03-17 19:46:23,955 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2025-03-17 19:46:23,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5543 conditions, 2591 events. 1453/2591 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14859 event pairs, 1194 based on Foata normal form. 0/2316 useless extension candidates. Maximal degree in co-relation 5448. Up to 2087 conditions per place. [2025-03-17 19:46:23,967 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 57 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2025-03-17 19:46:23,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 449 flow [2025-03-17 19:46:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-03-17 19:46:23,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2025-03-17 19:46:23,969 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 345 flow. Second operand 3 states and 107 transitions. [2025-03-17 19:46:23,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 449 flow [2025-03-17 19:46:23,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:23,972 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 333 flow [2025-03-17 19:46:23,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2025-03-17 19:46:23,974 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2025-03-17 19:46:23,975 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 333 flow [2025-03-17 19:46:23,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-03-17 19:46:23,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:23,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:23,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:24,175 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 [2025-03-17 19:46:24,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:24,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -772032047, now seen corresponding path program 1 times [2025-03-17 19:46:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:24,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208675026] [2025-03-17 19:46:24,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:24,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:24,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:24,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:24,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:24,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:24,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208675026] [2025-03-17 19:46:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208675026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:24,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701533160] [2025-03-17 19:46:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:24,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:24,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:24,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:24,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2025-03-17 19:46:24,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2025-03-17 19:46:24,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:24,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2025-03-17 19:46:24,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:24,630 INFO L124 PetriNetUnfolderBase]: 2829/4880 cut-off events. [2025-03-17 19:46:24,631 INFO L125 PetriNetUnfolderBase]: For 874/874 co-relation queries the response was YES. [2025-03-17 19:46:24,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 4880 events. 2829/4880 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 30638 event pairs, 1762 based on Foata normal form. 96/4488 useless extension candidates. Maximal degree in co-relation 10280. Up to 3068 conditions per place. [2025-03-17 19:46:24,645 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 95 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2025-03-17 19:46:24,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 115 transitions, 635 flow [2025-03-17 19:46:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2025-03-17 19:46:24,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5772058823529411 [2025-03-17 19:46:24,647 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 333 flow. Second operand 4 states and 157 transitions. [2025-03-17 19:46:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 115 transitions, 635 flow [2025-03-17 19:46:24,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:24,649 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 361 flow [2025-03-17 19:46:24,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2025-03-17 19:46:24,650 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2025-03-17 19:46:24,650 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 361 flow [2025-03-17 19:46:24,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2025-03-17 19:46:24,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:24,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:24,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:46:24,650 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:24,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash -779082584, now seen corresponding path program 1 times [2025-03-17 19:46:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678656818] [2025-03-17 19:46:24,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:24,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:24,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:24,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:24,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:24,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678656818] [2025-03-17 19:46:24,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678656818] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:24,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:24,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:24,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747703594] [2025-03-17 19:46:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:24,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:24,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:24,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:24,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:46:24,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:24,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2025-03-17 19:46:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:24,880 INFO L124 PetriNetUnfolderBase]: 1532/2826 cut-off events. [2025-03-17 19:46:24,880 INFO L125 PetriNetUnfolderBase]: For 900/1104 co-relation queries the response was YES. [2025-03-17 19:46:24,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 2826 events. 1532/2826 cut-off events. For 900/1104 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17184 event pairs, 668 based on Foata normal form. 94/2632 useless extension candidates. Maximal degree in co-relation 6421. Up to 1981 conditions per place. [2025-03-17 19:46:24,893 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 66 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2025-03-17 19:46:24,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 89 transitions, 524 flow [2025-03-17 19:46:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2025-03-17 19:46:24,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2025-03-17 19:46:24,895 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 361 flow. Second operand 3 states and 115 transitions. [2025-03-17 19:46:24,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 89 transitions, 524 flow [2025-03-17 19:46:24,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:24,898 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 381 flow [2025-03-17 19:46:24,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2025-03-17 19:46:24,899 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2025-03-17 19:46:24,900 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 381 flow [2025-03-17 19:46:24,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2025-03-17 19:46:24,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:24,900 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:24,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:46:24,900 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:24,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash 751849560, now seen corresponding path program 1 times [2025-03-17 19:46:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:24,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637087516] [2025-03-17 19:46:24,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:24,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:46:24,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:46:24,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:24,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:25,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637087516] [2025-03-17 19:46:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637087516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:25,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:25,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813983579] [2025-03-17 19:46:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:25,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:25,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:25,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:25,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-03-17 19:46:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:25,234 INFO L124 PetriNetUnfolderBase]: 1805/3185 cut-off events. [2025-03-17 19:46:25,234 INFO L125 PetriNetUnfolderBase]: For 1798/2124 co-relation queries the response was YES. [2025-03-17 19:46:25,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 3185 events. 1805/3185 cut-off events. For 1798/2124 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18569 event pairs, 1406 based on Foata normal form. 186/3084 useless extension candidates. Maximal degree in co-relation 7800. Up to 2196 conditions per place. [2025-03-17 19:46:25,248 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 68 selfloop transitions, 8 changer transitions 6/102 dead transitions. [2025-03-17 19:46:25,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 102 transitions, 622 flow [2025-03-17 19:46:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2025-03-17 19:46:25,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2025-03-17 19:46:25,250 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 381 flow. Second operand 4 states and 149 transitions. [2025-03-17 19:46:25,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 102 transitions, 622 flow [2025-03-17 19:46:25,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 102 transitions, 605 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:25,253 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 393 flow [2025-03-17 19:46:25,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2025-03-17 19:46:25,254 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2025-03-17 19:46:25,254 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 393 flow [2025-03-17 19:46:25,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-03-17 19:46:25,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:25,254 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:46:25,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:46:25,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:25,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash -300425440, now seen corresponding path program 2 times [2025-03-17 19:46:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:25,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311715343] [2025-03-17 19:46:25,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:25,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:46:25,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:46:25,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:25,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311715343] [2025-03-17 19:46:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311715343] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191289477] [2025-03-17 19:46:25,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:25,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:25,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:25,288 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) [2025-03-17 19:46:25,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:46:25,342 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:46:25,348 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:46:25,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:25,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:25,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:46:25,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:25,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:25,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191289477] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:25,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:25,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:46:25,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913443090] [2025-03-17 19:46:25,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:25,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:25,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:25,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:25,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:25,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:25,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-17 19:46:25,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:25,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:25,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:25,611 INFO L124 PetriNetUnfolderBase]: 1805/3194 cut-off events. [2025-03-17 19:46:25,611 INFO L125 PetriNetUnfolderBase]: For 1238/1564 co-relation queries the response was YES. [2025-03-17 19:46:25,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 3194 events. 1805/3194 cut-off events. For 1238/1564 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18651 event pairs, 1406 based on Foata normal form. 111/3019 useless extension candidates. Maximal degree in co-relation 7527. Up to 2637 conditions per place. [2025-03-17 19:46:25,625 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 47 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2025-03-17 19:46:25,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 509 flow [2025-03-17 19:46:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-03-17 19:46:25,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2025-03-17 19:46:25,626 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 393 flow. Second operand 4 states and 114 transitions. [2025-03-17 19:46:25,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 509 flow [2025-03-17 19:46:25,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:25,629 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 408 flow [2025-03-17 19:46:25,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2025-03-17 19:46:25,630 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2025-03-17 19:46:25,630 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 408 flow [2025-03-17 19:46:25,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-17 19:46:25,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:25,630 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:46:25,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:46:25,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:25,835 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:25,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1318169597, now seen corresponding path program 1 times [2025-03-17 19:46:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:25,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794818403] [2025-03-17 19:46:25,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:25,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:25,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:25,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:25,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:25,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794818403] [2025-03-17 19:46:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794818403] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709465693] [2025-03-17 19:46:25,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:25,954 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) [2025-03-17 19:46:25,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:46:25,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:26,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:26,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:26,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:26,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:46:26,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:26,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709465693] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:26,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:26,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-17 19:46:26,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356851007] [2025-03-17 19:46:26,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:26,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:46:26,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:26,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:46:26,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:46:26,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:26,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 408 flow. Second operand has 24 states, 24 states have (on average 21.083333333333332) internal successors, (506), 24 states have internal predecessors, (506), 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) [2025-03-17 19:46:26,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:26,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:26,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:26,603 INFO L124 PetriNetUnfolderBase]: 1823/3266 cut-off events. [2025-03-17 19:46:26,603 INFO L125 PetriNetUnfolderBase]: For 1495/1821 co-relation queries the response was YES. [2025-03-17 19:46:26,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 3266 events. 1823/3266 cut-off events. For 1495/1821 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19415 event pairs, 1406 based on Foata normal form. 122/3083 useless extension candidates. Maximal degree in co-relation 7798. Up to 2633 conditions per place. [2025-03-17 19:46:26,617 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 37 selfloop transitions, 62 changer transitions 0/117 dead transitions. [2025-03-17 19:46:26,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 117 transitions, 876 flow [2025-03-17 19:46:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:46:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:46:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 539 transitions. [2025-03-17 19:46:26,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3602941176470588 [2025-03-17 19:46:26,620 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 408 flow. Second operand 22 states and 539 transitions. [2025-03-17 19:46:26,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 117 transitions, 876 flow [2025-03-17 19:46:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 117 transitions, 808 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:26,624 INFO L231 Difference]: Finished difference. Result has 109 places, 117 transitions, 780 flow [2025-03-17 19:46:26,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=780, PETRI_PLACES=109, PETRI_TRANSITIONS=117} [2025-03-17 19:46:26,625 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 43 predicate places. [2025-03-17 19:46:26,625 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 117 transitions, 780 flow [2025-03-17 19:46:26,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 21.083333333333332) internal successors, (506), 24 states have internal predecessors, (506), 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) [2025-03-17 19:46:26,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:26,625 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:26,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:26,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 19:46:26,826 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:26,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1834947621, now seen corresponding path program 1 times [2025-03-17 19:46:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:26,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141283015] [2025-03-17 19:46:26,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:26,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:26,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:26,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:26,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141283015] [2025-03-17 19:46:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141283015] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573305384] [2025-03-17 19:46:26,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:26,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:26,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:26,938 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) [2025-03-17 19:46:26,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:46:26,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:27,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:27,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:27,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:27,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 19:46:27,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:27,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573305384] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:27,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:27,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-03-17 19:46:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334996822] [2025-03-17 19:46:27,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:27,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 19:46:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:27,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 19:46:27,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-17 19:46:27,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:27,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 117 transitions, 780 flow. Second operand has 15 states, 15 states have (on average 21.6) internal successors, (324), 15 states have internal predecessors, (324), 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) [2025-03-17 19:46:27,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:27,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:27,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:27,711 INFO L124 PetriNetUnfolderBase]: 3094/5753 cut-off events. [2025-03-17 19:46:27,711 INFO L125 PetriNetUnfolderBase]: For 2639/3041 co-relation queries the response was YES. [2025-03-17 19:46:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13598 conditions, 5753 events. 3094/5753 cut-off events. For 2639/3041 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 39612 event pairs, 1980 based on Foata normal form. 418/5643 useless extension candidates. Maximal degree in co-relation 13569. Up to 2553 conditions per place. [2025-03-17 19:46:27,733 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 98 selfloop transitions, 90 changer transitions 21/227 dead transitions. [2025-03-17 19:46:27,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 227 transitions, 1937 flow [2025-03-17 19:46:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 19:46:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 19:46:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 379 transitions. [2025-03-17 19:46:27,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39810924369747897 [2025-03-17 19:46:27,735 INFO L175 Difference]: Start difference. First operand has 109 places, 117 transitions, 780 flow. Second operand 14 states and 379 transitions. [2025-03-17 19:46:27,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 227 transitions, 1937 flow [2025-03-17 19:46:27,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 227 transitions, 1627 flow, removed 101 selfloop flow, removed 9 redundant places. [2025-03-17 19:46:27,742 INFO L231 Difference]: Finished difference. Result has 117 places, 162 transitions, 1178 flow [2025-03-17 19:46:27,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1178, PETRI_PLACES=117, PETRI_TRANSITIONS=162} [2025-03-17 19:46:27,742 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2025-03-17 19:46:27,742 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 162 transitions, 1178 flow [2025-03-17 19:46:27,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.6) internal successors, (324), 15 states have internal predecessors, (324), 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) [2025-03-17 19:46:27,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:27,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:27,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:27,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:27,943 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:27,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1496552918, now seen corresponding path program 1 times [2025-03-17 19:46:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761717194] [2025-03-17 19:46:27,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:27,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:46:27,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:46:27,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:27,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761717194] [2025-03-17 19:46:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761717194] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682807448] [2025-03-17 19:46:28,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:28,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:28,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:28,041 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) [2025-03-17 19:46:28,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:46:28,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:46:28,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:46:28,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:28,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:28,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:28,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:46:28,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682807448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-03-17 19:46:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005147825] [2025-03-17 19:46:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:28,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:28,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:28,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:46:28,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:28,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 162 transitions, 1178 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2025-03-17 19:46:28,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:28,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:28,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:28,418 INFO L124 PetriNetUnfolderBase]: 2173/4151 cut-off events. [2025-03-17 19:46:28,418 INFO L125 PetriNetUnfolderBase]: For 2597/2904 co-relation queries the response was YES. [2025-03-17 19:46:28,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9930 conditions, 4151 events. 2173/4151 cut-off events. For 2597/2904 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 28110 event pairs, 1721 based on Foata normal form. 359/4163 useless extension candidates. Maximal degree in co-relation 9897. Up to 3273 conditions per place. [2025-03-17 19:46:28,437 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 140 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2025-03-17 19:46:28,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 160 transitions, 1452 flow [2025-03-17 19:46:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-03-17 19:46:28,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2025-03-17 19:46:28,438 INFO L175 Difference]: Start difference. First operand has 117 places, 162 transitions, 1178 flow. Second operand 3 states and 104 transitions. [2025-03-17 19:46:28,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 160 transitions, 1452 flow [2025-03-17 19:46:28,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 160 transitions, 1439 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 19:46:28,446 INFO L231 Difference]: Finished difference. Result has 115 places, 160 transitions, 1159 flow [2025-03-17 19:46:28,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1159, PETRI_PLACES=115, PETRI_TRANSITIONS=160} [2025-03-17 19:46:28,447 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 49 predicate places. [2025-03-17 19:46:28,447 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 160 transitions, 1159 flow [2025-03-17 19:46:28,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2025-03-17 19:46:28,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:28,447 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:28,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:46:28,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:28,648 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:28,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1086319350, now seen corresponding path program 1 times [2025-03-17 19:46:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309559077] [2025-03-17 19:46:28,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:28,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:46:28,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:46:28,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:28,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:29,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309559077] [2025-03-17 19:46:29,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309559077] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:29,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138415829] [2025-03-17 19:46:29,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:29,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:29,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:29,099 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) [2025-03-17 19:46:29,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:46:29,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:46:29,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:46:29,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:29,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:29,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-17 19:46:29,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:29,211 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 [2025-03-17 19:46:29,409 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-17 19:46:29,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-03-17 19:46:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:29,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:29,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2025-03-17 19:46:29,635 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 28 treesize of output 22 [2025-03-17 19:46:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138415829] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:29,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:29,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-03-17 19:46:29,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37696856] [2025-03-17 19:46:29,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:29,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 19:46:29,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:29,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 19:46:29,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2025-03-17 19:46:29,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2025-03-17 19:46:29,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 160 transitions, 1159 flow. Second operand has 20 states, 20 states have (on average 18.25) internal successors, (365), 20 states have internal predecessors, (365), 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) [2025-03-17 19:46:29,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:29,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2025-03-17 19:46:29,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:31,163 INFO L124 PetriNetUnfolderBase]: 7477/12343 cut-off events. [2025-03-17 19:46:31,164 INFO L125 PetriNetUnfolderBase]: For 5969/7082 co-relation queries the response was YES. [2025-03-17 19:46:31,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29630 conditions, 12343 events. 7477/12343 cut-off events. For 5969/7082 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 85895 event pairs, 2410 based on Foata normal form. 553/11632 useless extension candidates. Maximal degree in co-relation 29596. Up to 3043 conditions per place. [2025-03-17 19:46:31,222 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 179 selfloop transitions, 108 changer transitions 6/307 dead transitions. [2025-03-17 19:46:31,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 307 transitions, 2279 flow [2025-03-17 19:46:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:46:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:46:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 412 transitions. [2025-03-17 19:46:31,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.403921568627451 [2025-03-17 19:46:31,224 INFO L175 Difference]: Start difference. First operand has 115 places, 160 transitions, 1159 flow. Second operand 15 states and 412 transitions. [2025-03-17 19:46:31,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 307 transitions, 2279 flow [2025-03-17 19:46:31,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 307 transitions, 2278 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:31,235 INFO L231 Difference]: Finished difference. Result has 132 places, 167 transitions, 1502 flow [2025-03-17 19:46:31,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1502, PETRI_PLACES=132, PETRI_TRANSITIONS=167} [2025-03-17 19:46:31,235 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2025-03-17 19:46:31,235 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 167 transitions, 1502 flow [2025-03-17 19:46:31,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.25) internal successors, (365), 20 states have internal predecessors, (365), 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) [2025-03-17 19:46:31,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:31,236 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:31,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:31,436 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,SelfDestructingSolverStorable13 [2025-03-17 19:46:31,437 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:31,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash -325858927, now seen corresponding path program 2 times [2025-03-17 19:46:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223378673] [2025-03-17 19:46:31,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:31,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:31,443 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 19:46:31,453 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:46:31,453 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:46:31,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:31,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223378673] [2025-03-17 19:46:31,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223378673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:31,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668483117] [2025-03-17 19:46:31,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:31,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:31,504 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) [2025-03-17 19:46:31,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:46:31,551 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 19:46:31,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:46:31,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:46:31,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:31,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:31,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:31,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:31,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668483117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:31,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:31,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-17 19:46:31,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121896452] [2025-03-17 19:46:31,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:31,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:46:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:31,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:46:31,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:46:31,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:46:31,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 167 transitions, 1502 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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) [2025-03-17 19:46:31,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:31,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:46:31,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:32,362 INFO L124 PetriNetUnfolderBase]: 6485/11505 cut-off events. [2025-03-17 19:46:32,362 INFO L125 PetriNetUnfolderBase]: For 9813/10109 co-relation queries the response was YES. [2025-03-17 19:46:32,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30366 conditions, 11505 events. 6485/11505 cut-off events. For 9813/10109 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 84809 event pairs, 2076 based on Foata normal form. 164/11163 useless extension candidates. Maximal degree in co-relation 30327. Up to 3735 conditions per place. [2025-03-17 19:46:32,422 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 183 selfloop transitions, 7 changer transitions 0/206 dead transitions. [2025-03-17 19:46:32,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 206 transitions, 2044 flow [2025-03-17 19:46:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2025-03-17 19:46:32,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2025-03-17 19:46:32,423 INFO L175 Difference]: Start difference. First operand has 132 places, 167 transitions, 1502 flow. Second operand 4 states and 142 transitions. [2025-03-17 19:46:32,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 206 transitions, 2044 flow [2025-03-17 19:46:32,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 206 transitions, 1986 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-03-17 19:46:32,464 INFO L231 Difference]: Finished difference. Result has 130 places, 166 transitions, 1466 flow [2025-03-17 19:46:32,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1466, PETRI_PLACES=130, PETRI_TRANSITIONS=166} [2025-03-17 19:46:32,465 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 64 predicate places. [2025-03-17 19:46:32,466 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 166 transitions, 1466 flow [2025-03-17 19:46:32,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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) [2025-03-17 19:46:32,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:32,466 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:32,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 19:46:32,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 19:46:32,667 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:32,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash 915280727, now seen corresponding path program 1 times [2025-03-17 19:46:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:32,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971749511] [2025-03-17 19:46:32,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:32,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:46:32,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:46:32,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:32,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:33,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:33,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971749511] [2025-03-17 19:46:33,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971749511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:33,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965679829] [2025-03-17 19:46:33,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:33,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:33,044 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) [2025-03-17 19:46:33,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:46:33,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:46:33,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:46:33,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:33,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:33,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 19:46:33,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:33,142 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 [2025-03-17 19:46:33,317 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-17 19:46:33,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-03-17 19:46:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:33,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:33,512 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 [2025-03-17 19:46:33,517 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 [2025-03-17 19:46:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:33,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965679829] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:33,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:33,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-03-17 19:46:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100100079] [2025-03-17 19:46:33,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:33,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 19:46:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:33,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 19:46:33,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2025-03-17 19:46:33,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 68 [2025-03-17 19:46:33,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 166 transitions, 1466 flow. Second operand has 20 states, 20 states have (on average 19.25) internal successors, (385), 20 states have internal predecessors, (385), 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) [2025-03-17 19:46:33,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:33,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 68 [2025-03-17 19:46:33,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:35,137 INFO L124 PetriNetUnfolderBase]: 5635/9609 cut-off events. [2025-03-17 19:46:35,137 INFO L125 PetriNetUnfolderBase]: For 10220/10977 co-relation queries the response was YES. [2025-03-17 19:46:35,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26956 conditions, 9609 events. 5635/9609 cut-off events. For 10220/10977 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 66632 event pairs, 2098 based on Foata normal form. 693/10082 useless extension candidates. Maximal degree in co-relation 26918. Up to 3043 conditions per place. [2025-03-17 19:46:35,178 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 174 selfloop transitions, 107 changer transitions 6/303 dead transitions. [2025-03-17 19:46:35,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 303 transitions, 2610 flow [2025-03-17 19:46:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:46:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:46:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 421 transitions. [2025-03-17 19:46:35,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41274509803921566 [2025-03-17 19:46:35,180 INFO L175 Difference]: Start difference. First operand has 130 places, 166 transitions, 1466 flow. Second operand 15 states and 421 transitions. [2025-03-17 19:46:35,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 303 transitions, 2610 flow [2025-03-17 19:46:35,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 303 transitions, 2536 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:35,217 INFO L231 Difference]: Finished difference. Result has 143 places, 167 transitions, 1680 flow [2025-03-17 19:46:35,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1680, PETRI_PLACES=143, PETRI_TRANSITIONS=167} [2025-03-17 19:46:35,218 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 77 predicate places. [2025-03-17 19:46:35,218 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 167 transitions, 1680 flow [2025-03-17 19:46:35,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.25) internal successors, (385), 20 states have internal predecessors, (385), 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) [2025-03-17 19:46:35,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:35,218 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:35,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:35,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 19:46:35,423 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:35,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1511691491, now seen corresponding path program 1 times [2025-03-17 19:46:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415445140] [2025-03-17 19:46:35,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:35,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:46:35,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:46:35,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:35,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:35,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415445140] [2025-03-17 19:46:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415445140] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652946795] [2025-03-17 19:46:35,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:35,477 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) [2025-03-17 19:46:35,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:46:35,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:46:35,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:46:35,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:35,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:35,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:35,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:35,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:35,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652946795] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:35,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:35,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:46:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383067759] [2025-03-17 19:46:35,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:35,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:46:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:35,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:46:35,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:46:35,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2025-03-17 19:46:35,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 167 transitions, 1680 flow. Second operand has 12 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 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) [2025-03-17 19:46:35,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:35,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2025-03-17 19:46:35,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:36,925 INFO L124 PetriNetUnfolderBase]: 9059/16575 cut-off events. [2025-03-17 19:46:36,925 INFO L125 PetriNetUnfolderBase]: For 19452/19900 co-relation queries the response was YES. [2025-03-17 19:46:36,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44926 conditions, 16575 events. 9059/16575 cut-off events. For 19452/19900 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 123995 event pairs, 2838 based on Foata normal form. 0/15987 useless extension candidates. Maximal degree in co-relation 44885. Up to 6387 conditions per place. [2025-03-17 19:46:37,029 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 308 selfloop transitions, 13 changer transitions 0/339 dead transitions. [2025-03-17 19:46:37,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 339 transitions, 3104 flow [2025-03-17 19:46:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 373 transitions. [2025-03-17 19:46:37,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485294117647059 [2025-03-17 19:46:37,031 INFO L175 Difference]: Start difference. First operand has 143 places, 167 transitions, 1680 flow. Second operand 10 states and 373 transitions. [2025-03-17 19:46:37,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 339 transitions, 3104 flow [2025-03-17 19:46:37,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 339 transitions, 2893 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-03-17 19:46:37,100 INFO L231 Difference]: Finished difference. Result has 144 places, 176 transitions, 1629 flow [2025-03-17 19:46:37,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1629, PETRI_PLACES=144, PETRI_TRANSITIONS=176} [2025-03-17 19:46:37,101 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 78 predicate places. [2025-03-17 19:46:37,101 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 176 transitions, 1629 flow [2025-03-17 19:46:37,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 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) [2025-03-17 19:46:37,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:37,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:37,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:37,301 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,SelfDestructingSolverStorable16 [2025-03-17 19:46:37,302 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:37,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash -912750836, now seen corresponding path program 1 times [2025-03-17 19:46:37,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:37,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026192719] [2025-03-17 19:46:37,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:37,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:37,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:46:37,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:46:37,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:37,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:37,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:37,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026192719] [2025-03-17 19:46:37,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026192719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:37,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771519590] [2025-03-17 19:46:37,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:37,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:37,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:37,637 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) [2025-03-17 19:46:37,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 19:46:37,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:46:37,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:46:37,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:37,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:37,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-17 19:46:37,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:37,751 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 [2025-03-17 19:46:38,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-17 19:46:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:38,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:38,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2025-03-17 19:46:38,286 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 28 treesize of output 22 [2025-03-17 19:46:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771519590] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:38,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-03-17 19:46:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350741945] [2025-03-17 19:46:38,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:38,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:46:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:38,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:46:38,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:46:38,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2025-03-17 19:46:38,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 176 transitions, 1629 flow. Second operand has 23 states, 23 states have (on average 18.73913043478261) internal successors, (431), 23 states have internal predecessors, (431), 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) [2025-03-17 19:46:38,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:38,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2025-03-17 19:46:38,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:42,000 INFO L124 PetriNetUnfolderBase]: 17454/28790 cut-off events. [2025-03-17 19:46:42,000 INFO L125 PetriNetUnfolderBase]: For 33912/35400 co-relation queries the response was YES. [2025-03-17 19:46:42,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83562 conditions, 28790 events. 17454/28790 cut-off events. For 33912/35400 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 222669 event pairs, 4078 based on Foata normal form. 0/26963 useless extension candidates. Maximal degree in co-relation 83519. Up to 4316 conditions per place. [2025-03-17 19:46:42,180 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 304 selfloop transitions, 113 changer transitions 9/445 dead transitions. [2025-03-17 19:46:42,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 445 transitions, 3785 flow [2025-03-17 19:46:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 19:46:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-17 19:46:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 503 transitions. [2025-03-17 19:46:42,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41094771241830064 [2025-03-17 19:46:42,182 INFO L175 Difference]: Start difference. First operand has 144 places, 176 transitions, 1629 flow. Second operand 18 states and 503 transitions. [2025-03-17 19:46:42,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 445 transitions, 3785 flow [2025-03-17 19:46:42,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 445 transitions, 3578 flow, removed 88 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:42,328 INFO L231 Difference]: Finished difference. Result has 164 places, 187 transitions, 1981 flow [2025-03-17 19:46:42,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1981, PETRI_PLACES=164, PETRI_TRANSITIONS=187} [2025-03-17 19:46:42,328 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 98 predicate places. [2025-03-17 19:46:42,328 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 187 transitions, 1981 flow [2025-03-17 19:46:42,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.73913043478261) internal successors, (431), 23 states have internal predecessors, (431), 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) [2025-03-17 19:46:42,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:42,329 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:42,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:42,529 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,SelfDestructingSolverStorable17 [2025-03-17 19:46:42,529 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:42,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1200809427, now seen corresponding path program 1 times [2025-03-17 19:46:42,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:42,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664715993] [2025-03-17 19:46:42,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:42,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:42,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:46:42,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:46:42,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:42,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664715993] [2025-03-17 19:46:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664715993] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754290268] [2025-03-17 19:46:42,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:42,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:42,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:42,832 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) [2025-03-17 19:46:42,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 19:46:42,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:46:42,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:46:42,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:42,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:42,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 19:46:42,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:42,946 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 [2025-03-17 19:46:43,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 19:46:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:43,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:43,391 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 [2025-03-17 19:46:43,395 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 [2025-03-17 19:46:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754290268] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:43,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:43,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-03-17 19:46:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396397669] [2025-03-17 19:46:43,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:43,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:46:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:43,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:46:43,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:46:43,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 68 [2025-03-17 19:46:43,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 187 transitions, 1981 flow. Second operand has 23 states, 23 states have (on average 19.608695652173914) internal successors, (451), 23 states have internal predecessors, (451), 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) [2025-03-17 19:46:43,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:43,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 68 [2025-03-17 19:46:43,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:46,368 INFO L124 PetriNetUnfolderBase]: 14530/25104 cut-off events. [2025-03-17 19:46:46,369 INFO L125 PetriNetUnfolderBase]: For 31777/32921 co-relation queries the response was YES. [2025-03-17 19:46:46,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76551 conditions, 25104 events. 14530/25104 cut-off events. For 31777/32921 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 200803 event pairs, 4078 based on Foata normal form. 510/25093 useless extension candidates. Maximal degree in co-relation 76501. Up to 4316 conditions per place. [2025-03-17 19:46:46,540 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 297 selfloop transitions, 114 changer transitions 9/442 dead transitions. [2025-03-17 19:46:46,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 442 transitions, 3942 flow [2025-03-17 19:46:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 19:46:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-17 19:46:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 515 transitions. [2025-03-17 19:46:46,542 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4207516339869281 [2025-03-17 19:46:46,542 INFO L175 Difference]: Start difference. First operand has 164 places, 187 transitions, 1981 flow. Second operand 18 states and 515 transitions. [2025-03-17 19:46:46,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 442 transitions, 3942 flow [2025-03-17 19:46:46,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 442 transitions, 3821 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-17 19:46:46,766 INFO L231 Difference]: Finished difference. Result has 177 places, 189 transitions, 2116 flow [2025-03-17 19:46:46,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2116, PETRI_PLACES=177, PETRI_TRANSITIONS=189} [2025-03-17 19:46:46,766 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 111 predicate places. [2025-03-17 19:46:46,767 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 189 transitions, 2116 flow [2025-03-17 19:46:46,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 19.608695652173914) internal successors, (451), 23 states have internal predecessors, (451), 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) [2025-03-17 19:46:46,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:46,767 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:46,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:46,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:46,968 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:46,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1987638366, now seen corresponding path program 1 times [2025-03-17 19:46:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952741368] [2025-03-17 19:46:46,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:46,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:46,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:46:46,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:46:46,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:46,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:47,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:47,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952741368] [2025-03-17 19:46:47,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952741368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:47,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378383516] [2025-03-17 19:46:47,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:47,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:47,217 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) [2025-03-17 19:46:47,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 19:46:47,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:46:47,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:46:47,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:47,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:47,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:47,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:46:47,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:47,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378383516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:47,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:47,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-03-17 19:46:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689066689] [2025-03-17 19:46:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:47,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:47,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:47,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:46:47,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:46:47,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 189 transitions, 2116 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2025-03-17 19:46:47,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:47,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:46:47,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:50,696 INFO L124 PetriNetUnfolderBase]: 18638/36742 cut-off events. [2025-03-17 19:46:50,697 INFO L125 PetriNetUnfolderBase]: For 60617/61551 co-relation queries the response was YES. [2025-03-17 19:46:50,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110892 conditions, 36742 events. 18638/36742 cut-off events. For 60617/61551 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 333851 event pairs, 4397 based on Foata normal form. 703/36475 useless extension candidates. Maximal degree in co-relation 110837. Up to 10454 conditions per place. [2025-03-17 19:46:51,002 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 237 selfloop transitions, 10 changer transitions 0/274 dead transitions. [2025-03-17 19:46:51,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 274 transitions, 3091 flow [2025-03-17 19:46:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-03-17 19:46:51,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2025-03-17 19:46:51,004 INFO L175 Difference]: Start difference. First operand has 177 places, 189 transitions, 2116 flow. Second operand 4 states and 168 transitions. [2025-03-17 19:46:51,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 274 transitions, 3091 flow [2025-03-17 19:46:51,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 274 transitions, 2911 flow, removed 3 selfloop flow, removed 13 redundant places. [2025-03-17 19:46:51,650 INFO L231 Difference]: Finished difference. Result has 169 places, 194 transitions, 2049 flow [2025-03-17 19:46:51,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2049, PETRI_PLACES=169, PETRI_TRANSITIONS=194} [2025-03-17 19:46:51,651 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 103 predicate places. [2025-03-17 19:46:51,651 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 194 transitions, 2049 flow [2025-03-17 19:46:51,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2025-03-17 19:46:51,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:51,651 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:51,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 19:46:51,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:51,852 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:46:51,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:51,852 INFO L85 PathProgramCache]: Analyzing trace with hash 954412756, now seen corresponding path program 1 times [2025-03-17 19:46:51,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:51,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375314121] [2025-03-17 19:46:51,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:51,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:51,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:46:51,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:46:51,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:51,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:46:52,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:52,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375314121] [2025-03-17 19:46:52,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375314121] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:52,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955171081] [2025-03-17 19:46:52,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:52,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:52,066 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) [2025-03-17 19:46:52,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 19:46:52,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:46:52,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:46:52,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:52,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:52,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:46:52,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:52,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:46:52,172 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 [2025-03-17 19:46:52,227 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:46:52,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-17 19:46:52,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 19:46:52,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 19:46:52,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 19:46:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:52,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:52,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:46:52,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2025-03-17 19:46:52,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:46:52,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 60 [2025-03-17 19:46:52,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:46:52,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2025-03-17 19:46:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:46:52,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955171081] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:52,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:52,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2025-03-17 19:46:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23552872] [2025-03-17 19:46:52,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:52,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 19:46:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:52,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 19:46:52,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=381, Unknown=1, NotChecked=0, Total=462 [2025-03-17 19:46:52,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 68 [2025-03-17 19:46:52,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 194 transitions, 2049 flow. Second operand has 22 states, 22 states have (on average 15.863636363636363) internal successors, (349), 22 states have internal predecessors, (349), 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) [2025-03-17 19:46:52,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:52,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 68 [2025-03-17 19:46:52,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:59,645 INFO L124 PetriNetUnfolderBase]: 38335/59930 cut-off events. [2025-03-17 19:46:59,645 INFO L125 PetriNetUnfolderBase]: For 114374/116440 co-relation queries the response was YES. [2025-03-17 19:47:00,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201778 conditions, 59930 events. 38335/59930 cut-off events. For 114374/116440 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 453936 event pairs, 18853 based on Foata normal form. 174/57962 useless extension candidates. Maximal degree in co-relation 201721. Up to 37662 conditions per place. [2025-03-17 19:47:00,200 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 250 selfloop transitions, 75 changer transitions 14/355 dead transitions. [2025-03-17 19:47:00,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 355 transitions, 3534 flow [2025-03-17 19:47:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-17 19:47:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-17 19:47:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 416 transitions. [2025-03-17 19:47:00,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3058823529411765 [2025-03-17 19:47:00,201 INFO L175 Difference]: Start difference. First operand has 169 places, 194 transitions, 2049 flow. Second operand 20 states and 416 transitions. [2025-03-17 19:47:00,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 355 transitions, 3534 flow [2025-03-17 19:47:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 355 transitions, 3512 flow, removed 11 selfloop flow, removed 0 redundant places. [2025-03-17 19:47:01,025 INFO L231 Difference]: Finished difference. Result has 193 places, 214 transitions, 2434 flow [2025-03-17 19:47:01,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2434, PETRI_PLACES=193, PETRI_TRANSITIONS=214} [2025-03-17 19:47:01,026 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 127 predicate places. [2025-03-17 19:47:01,026 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 214 transitions, 2434 flow [2025-03-17 19:47:01,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.863636363636363) internal successors, (349), 22 states have internal predecessors, (349), 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) [2025-03-17 19:47:01,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:01,026 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:01,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:01,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:01,226 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:47:01,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1521073235, now seen corresponding path program 2 times [2025-03-17 19:47:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715263566] [2025-03-17 19:47:01,227 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:01,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-17 19:47:01,242 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 26 statements. [2025-03-17 19:47:01,242 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:01,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-17 19:47:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715263566] [2025-03-17 19:47:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715263566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782694833] [2025-03-17 19:47:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:01,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:01,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:01,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:47:01,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2025-03-17 19:47:01,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 214 transitions, 2434 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-17 19:47:01,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:01,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2025-03-17 19:47:01,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:05,927 INFO L124 PetriNetUnfolderBase]: 27717/47089 cut-off events. [2025-03-17 19:47:05,928 INFO L125 PetriNetUnfolderBase]: For 100009/101823 co-relation queries the response was YES. [2025-03-17 19:47:06,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158631 conditions, 47089 events. 27717/47089 cut-off events. For 100009/101823 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 383051 event pairs, 7522 based on Foata normal form. 564/46462 useless extension candidates. Maximal degree in co-relation 158567. Up to 32415 conditions per place. [2025-03-17 19:47:06,394 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 242 selfloop transitions, 14 changer transitions 0/281 dead transitions. [2025-03-17 19:47:06,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 281 transitions, 3284 flow [2025-03-17 19:47:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:47:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:47:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2025-03-17 19:47:06,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2025-03-17 19:47:06,395 INFO L175 Difference]: Start difference. First operand has 193 places, 214 transitions, 2434 flow. Second operand 5 states and 179 transitions. [2025-03-17 19:47:06,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 281 transitions, 3284 flow [2025-03-17 19:47:06,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 281 transitions, 3162 flow, removed 3 selfloop flow, removed 11 redundant places. [2025-03-17 19:47:06,939 INFO L231 Difference]: Finished difference. Result has 188 places, 219 transitions, 2414 flow [2025-03-17 19:47:06,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2414, PETRI_PLACES=188, PETRI_TRANSITIONS=219} [2025-03-17 19:47:06,940 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 122 predicate places. [2025-03-17 19:47:06,940 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 219 transitions, 2414 flow [2025-03-17 19:47:06,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-17 19:47:06,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:06,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:06,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 19:47:06,940 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:47:06,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1859895128, now seen corresponding path program 1 times [2025-03-17 19:47:06,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:06,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697905394] [2025-03-17 19:47:06,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:06,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 19:47:06,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:47:06,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:06,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:47:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697905394] [2025-03-17 19:47:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697905394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:07,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204457197] [2025-03-17 19:47:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:07,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:07,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:07,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:07,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2025-03-17 19:47:07,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 219 transitions, 2414 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-03-17 19:47:07,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:07,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2025-03-17 19:47:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:11,924 INFO L124 PetriNetUnfolderBase]: 25842/49339 cut-off events. [2025-03-17 19:47:11,924 INFO L125 PetriNetUnfolderBase]: For 116681/118575 co-relation queries the response was YES. [2025-03-17 19:47:12,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167322 conditions, 49339 events. 25842/49339 cut-off events. For 116681/118575 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 460839 event pairs, 6466 based on Foata normal form. 573/48813 useless extension candidates. Maximal degree in co-relation 167257. Up to 14795 conditions per place. [2025-03-17 19:47:12,420 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 244 selfloop transitions, 14 changer transitions 15/301 dead transitions. [2025-03-17 19:47:12,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 301 transitions, 3494 flow [2025-03-17 19:47:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-03-17 19:47:12,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5955882352941176 [2025-03-17 19:47:12,421 INFO L175 Difference]: Start difference. First operand has 188 places, 219 transitions, 2414 flow. Second operand 4 states and 162 transitions. [2025-03-17 19:47:12,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 301 transitions, 3494 flow [2025-03-17 19:47:13,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 301 transitions, 3463 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:13,275 INFO L231 Difference]: Finished difference. Result has 190 places, 220 transitions, 2445 flow [2025-03-17 19:47:13,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2445, PETRI_PLACES=190, PETRI_TRANSITIONS=220} [2025-03-17 19:47:13,275 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 124 predicate places. [2025-03-17 19:47:13,275 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 220 transitions, 2445 flow [2025-03-17 19:47:13,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-03-17 19:47:13,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:13,276 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:13,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 19:47:13,276 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:47:13,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 856834642, now seen corresponding path program 2 times [2025-03-17 19:47:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889793808] [2025-03-17 19:47:13,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:13,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:13,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 19:47:13,290 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 28 statements. [2025-03-17 19:47:13,290 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:13,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-17 19:47:13,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889793808] [2025-03-17 19:47:13,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889793808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:13,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606061027] [2025-03-17 19:47:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:13,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:13,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:13,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:47:13,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2025-03-17 19:47:13,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 220 transitions, 2445 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2025-03-17 19:47:13,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:13,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2025-03-17 19:47:13,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand