./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-c00e63d-m [2025-02-06 18:54:04,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:54:04,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:54:04,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:54:04,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:54:04,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:54:04,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:54:04,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:54:04,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:54:04,966 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:54:04,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:54:04,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:54:04,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:54:04,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:54:04,967 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:54:04,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:54:04,968 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:54:04,969 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:54:04,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:54:04,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:54:04,969 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-jdk21/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 [2025-02-06 18:54:05,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:54:05,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:54:05,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:54:05,224 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:54:05,224 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:54:05,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2025-02-06 18:54:06,474 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/be0a41dcb/b688938015194ed1a110edf7682f2e4e/FLAG55084041a [2025-02-06 18:54:06,788 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:54:06,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2025-02-06 18:54:06,796 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/be0a41dcb/b688938015194ed1a110edf7682f2e4e/FLAG55084041a [2025-02-06 18:54:07,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/be0a41dcb/b688938015194ed1a110edf7682f2e4e [2025-02-06 18:54:07,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:54:07,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:54:07,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:54:07,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:54:07,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:54:07,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245c5c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07, skipping insertion in model container [2025-02-06 18:54:07,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:54:07,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:54:07,200 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:54:07,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:54:07,238 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:54:07,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07 WrapperNode [2025-02-06 18:54:07,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:54:07,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:54:07,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:54:07,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:54:07,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,264 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 246 [2025-02-06 18:54:07,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:54:07,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:54:07,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:54:07,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:54:07,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,282 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]. [2025-02-06 18:54:07,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:54:07,294 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:54:07,294 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:54:07,294 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:54:07,294 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (1/1) ... [2025-02-06 18:54:07,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:54:07,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:07,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:54:07,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:54:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:54:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:54:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:54:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:54:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:54:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:54:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:54:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:54:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:54:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:54:07,337 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:54:07,409 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:54:07,411 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:54:07,679 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:54:07,679 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:54:07,869 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:54:07,870 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:54:07,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:54:07 BoogieIcfgContainer [2025-02-06 18:54:07,870 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:54:07,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:54:07,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:54:07,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:54:07,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:54:07" (1/3) ... [2025-02-06 18:54:07,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678555b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:54:07, skipping insertion in model container [2025-02-06 18:54:07,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:54:07" (2/3) ... [2025-02-06 18:54:07,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678555b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:54:07, skipping insertion in model container [2025-02-06 18:54:07,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:54:07" (3/3) ... [2025-02-06 18:54:07,877 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2025-02-06 18:54:07,888 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:54:07,889 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-3.wvr.c that has 4 procedures, 64 locations, 1 initial locations, 5 loop locations, and 20 error locations. [2025-02-06 18:54:07,889 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:54:07,956 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:54:07,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2025-02-06 18:54:08,023 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2025-02-06 18:54:08,026 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:54:08,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2025-02-06 18:54:08,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2025-02-06 18:54:08,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 145 flow [2025-02-06 18:54:08,042 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:54:08,054 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;@645f66b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:54:08,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2025-02-06 18:54:08,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:54:08,057 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:54:08,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:54:08,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:08,057 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:54:08,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:08,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash 691159, now seen corresponding path program 1 times [2025-02-06 18:54:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268265742] [2025-02-06 18:54:08,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:08,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:54:08,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:54:08,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:08,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:08,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:08,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268265742] [2025-02-06 18:54:08,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268265742] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:08,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:08,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:08,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144097974] [2025-02-06 18:54:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:08,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:08,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:08,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:08,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:08,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-02-06 18:54:08,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:08,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:08,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:08,781 INFO L124 PetriNetUnfolderBase]: 2188/3791 cut-off events. [2025-02-06 18:54:08,782 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-02-06 18:54:08,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 3791 events. 2188/3791 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 24918 event pairs, 1926 based on Foata normal form. 257/2997 useless extension candidates. Maximal degree in co-relation 6636. Up to 3019 conditions per place. [2025-02-06 18:54:08,803 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 38 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2025-02-06 18:54:08,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 233 flow [2025-02-06 18:54:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2025-02-06 18:54:08,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-02-06 18:54:08,813 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 145 flow. Second operand 4 states and 144 transitions. [2025-02-06 18:54:08,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 233 flow [2025-02-06 18:54:08,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:54:08,819 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 182 flow [2025-02-06 18:54:08,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2025-02-06 18:54:08,823 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2025-02-06 18:54:08,823 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 182 flow [2025-02-06 18:54:08,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-02-06 18:54:08,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:08,824 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:54:08,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:54:08,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:08,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:08,824 INFO L85 PathProgramCache]: Analyzing trace with hash -883920769, now seen corresponding path program 1 times [2025-02-06 18:54:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:08,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139146907] [2025-02-06 18:54:08,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:08,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:54:08,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:54:08,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:08,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:08,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139146907] [2025-02-06 18:54:08,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139146907] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:08,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553328924] [2025-02-06 18:54:08,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:08,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:08,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:08,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:54:08,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:54:09,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:54:09,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:09,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:09,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:54:09,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,037 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553328924] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:09,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:09,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:54:09,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248358942] [2025-02-06 18:54:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:09,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:54:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:09,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:54:09,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:54:09,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:09,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2025-02-06 18:54:09,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:09,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:09,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:09,409 INFO L124 PetriNetUnfolderBase]: 2188/3789 cut-off events. [2025-02-06 18:54:09,409 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-02-06 18:54:09,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6974 conditions, 3789 events. 2188/3789 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 24880 event pairs, 1926 based on Foata normal form. 2/2743 useless extension candidates. Maximal degree in co-relation 6924. Up to 3009 conditions per place. [2025-02-06 18:54:09,432 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 31 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2025-02-06 18:54:09,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 260 flow [2025-02-06 18:54:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:54:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:54:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2025-02-06 18:54:09,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2025-02-06 18:54:09,433 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 182 flow. Second operand 6 states and 177 transitions. [2025-02-06 18:54:09,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 260 flow [2025-02-06 18:54:09,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:54:09,435 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 198 flow [2025-02-06 18:54:09,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2025-02-06 18:54:09,436 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2025-02-06 18:54:09,436 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 198 flow [2025-02-06 18:54:09,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2025-02-06 18:54:09,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:09,436 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:54:09,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:54:09,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:09,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:09,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1631739464, now seen corresponding path program 1 times [2025-02-06 18:54:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943536886] [2025-02-06 18:54:09,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:09,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:09,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:09,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:09,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943536886] [2025-02-06 18:54:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943536886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658078024] [2025-02-06 18:54:09,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:09,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:09,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:09,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:09,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:54:09,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:09,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:09,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:09,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:09,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:54:09,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,818 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658078024] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:09,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:09,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:54:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476667722] [2025-02-06 18:54:09,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:09,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:54:09,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:09,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:54:09,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:54:09,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:09,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2025-02-06 18:54:09,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:09,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:09,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:10,209 INFO L124 PetriNetUnfolderBase]: 2194/3813 cut-off events. [2025-02-06 18:54:10,210 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2025-02-06 18:54:10,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 3813 events. 2194/3813 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 25114 event pairs, 1926 based on Foata normal form. 6/2770 useless extension candidates. Maximal degree in co-relation 6926. Up to 3020 conditions per place. [2025-02-06 18:54:10,226 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 36 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2025-02-06 18:54:10,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 434 flow [2025-02-06 18:54:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:54:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:54:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 287 transitions. [2025-02-06 18:54:10,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41 [2025-02-06 18:54:10,228 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 198 flow. Second operand 10 states and 287 transitions. [2025-02-06 18:54:10,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 434 flow [2025-02-06 18:54:10,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 376 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-06 18:54:10,230 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 338 flow [2025-02-06 18:54:10,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2025-02-06 18:54:10,231 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2025-02-06 18:54:10,231 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 338 flow [2025-02-06 18:54:10,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2025-02-06 18:54:10,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:10,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:10,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:10,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:10,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:10,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1603902589, now seen corresponding path program 1 times [2025-02-06 18:54:10,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:10,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414695112] [2025-02-06 18:54:10,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:10,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:10,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:10,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:10,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:10,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414695112] [2025-02-06 18:54:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414695112] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:10,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:10,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087429061] [2025-02-06 18:54:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:10,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:10,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:10,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:10,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:10,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:10,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:10,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:10,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:10,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:10,832 INFO L124 PetriNetUnfolderBase]: 2331/4091 cut-off events. [2025-02-06 18:54:10,832 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-02-06 18:54:10,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7642 conditions, 4091 events. 2331/4091 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 26893 event pairs, 2053 based on Foata normal form. 98/3172 useless extension candidates. Maximal degree in co-relation 7546. Up to 3035 conditions per place. [2025-02-06 18:54:10,849 INFO L140 encePairwiseOnDemand]: 59/70 looper letters, 82 selfloop transitions, 5 changer transitions 1/109 dead transitions. [2025-02-06 18:54:10,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 649 flow [2025-02-06 18:54:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2025-02-06 18:54:10,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2025-02-06 18:54:10,851 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 338 flow. Second operand 5 states and 194 transitions. [2025-02-06 18:54:10,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 649 flow [2025-02-06 18:54:10,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 615 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:10,854 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 357 flow [2025-02-06 18:54:10,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2025-02-06 18:54:10,855 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2025-02-06 18:54:10,855 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 357 flow [2025-02-06 18:54:10,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:10,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:10,855 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:10,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:54:10,855 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:10,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -681987029, now seen corresponding path program 1 times [2025-02-06 18:54:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597899276] [2025-02-06 18:54:10,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:10,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:54:10,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:54:10,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:10,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:10,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597899276] [2025-02-06 18:54:10,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597899276] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803743514] [2025-02-06 18:54:10,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:10,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:10,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:54:11,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:54:11,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:54:11,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:11,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:11,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:11,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:11,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803743514] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:11,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:11,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-06 18:54:11,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638614902] [2025-02-06 18:54:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:11,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:11,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:11,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:11,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:54:11,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:11,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2025-02-06 18:54:11,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:11,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:11,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:11,209 INFO L124 PetriNetUnfolderBase]: 1592/2819 cut-off events. [2025-02-06 18:54:11,209 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2025-02-06 18:54:11,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 2819 events. 1592/2819 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16961 event pairs, 1376 based on Foata normal form. 0/2342 useless extension candidates. Maximal degree in co-relation 5505. Up to 2260 conditions per place. [2025-02-06 18:54:11,218 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 57 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2025-02-06 18:54:11,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 461 flow [2025-02-06 18:54:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2025-02-06 18:54:11,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2025-02-06 18:54:11,219 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 357 flow. Second operand 3 states and 113 transitions. [2025-02-06 18:54:11,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 461 flow [2025-02-06 18:54:11,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 457 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:11,221 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 343 flow [2025-02-06 18:54:11,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2025-02-06 18:54:11,222 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2025-02-06 18:54:11,222 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 343 flow [2025-02-06 18:54:11,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2025-02-06 18:54:11,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:11,222 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:11,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:54:11,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:11,423 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:11,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1249454773, now seen corresponding path program 1 times [2025-02-06 18:54:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:11,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9001881] [2025-02-06 18:54:11,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:11,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:54:11,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:54:11,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:11,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9001881] [2025-02-06 18:54:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9001881] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:11,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:11,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:54:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011130669] [2025-02-06 18:54:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:11,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:11,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:11,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:11,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:11,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-02-06 18:54:11,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:11,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:11,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:11,721 INFO L124 PetriNetUnfolderBase]: 1446/2625 cut-off events. [2025-02-06 18:54:11,721 INFO L125 PetriNetUnfolderBase]: For 423/423 co-relation queries the response was YES. [2025-02-06 18:54:11,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5287 conditions, 2625 events. 1446/2625 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15394 event pairs, 508 based on Foata normal form. 43/2270 useless extension candidates. Maximal degree in co-relation 5271. Up to 1515 conditions per place. [2025-02-06 18:54:11,733 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 69 selfloop transitions, 2 changer transitions 1/93 dead transitions. [2025-02-06 18:54:11,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 524 flow [2025-02-06 18:54:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2025-02-06 18:54:11,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-06 18:54:11,734 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 343 flow. Second operand 3 states and 126 transitions. [2025-02-06 18:54:11,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 524 flow [2025-02-06 18:54:11,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:11,736 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 338 flow [2025-02-06 18:54:11,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2025-02-06 18:54:11,737 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2025-02-06 18:54:11,737 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 338 flow [2025-02-06 18:54:11,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-02-06 18:54:11,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:11,737 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:11,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:54:11,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:11,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1740484399, now seen corresponding path program 1 times [2025-02-06 18:54:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668496075] [2025-02-06 18:54:11,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:11,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:11,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:11,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:11,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:11,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668496075] [2025-02-06 18:54:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668496075] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:11,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562974934] [2025-02-06 18:54:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:11,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:11,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:11,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:11,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:11,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2025-02-06 18:54:11,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 338 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) [2025-02-06 18:54:11,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:11,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2025-02-06 18:54:11,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:12,227 INFO L124 PetriNetUnfolderBase]: 2835/4988 cut-off events. [2025-02-06 18:54:12,227 INFO L125 PetriNetUnfolderBase]: For 932/950 co-relation queries the response was YES. [2025-02-06 18:54:12,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 4988 events. 2835/4988 cut-off events. For 932/950 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 32433 event pairs, 1600 based on Foata normal form. 96/4538 useless extension candidates. Maximal degree in co-relation 10462. Up to 3068 conditions per place. [2025-02-06 18:54:12,242 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 95 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2025-02-06 18:54:12,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 642 flow [2025-02-06 18:54:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2025-02-06 18:54:12,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2025-02-06 18:54:12,243 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 338 flow. Second operand 4 states and 165 transitions. [2025-02-06 18:54:12,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 642 flow [2025-02-06 18:54:12,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:12,246 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 365 flow [2025-02-06 18:54:12,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=365, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2025-02-06 18:54:12,247 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2025-02-06 18:54:12,247 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 365 flow [2025-02-06 18:54:12,247 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) [2025-02-06 18:54:12,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:12,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:12,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:54:12,248 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:12,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2114646558, now seen corresponding path program 1 times [2025-02-06 18:54:12,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369276871] [2025-02-06 18:54:12,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:12,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:54:12,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:54:12,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:12,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369276871] [2025-02-06 18:54:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369276871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:12,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:12,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204776715] [2025-02-06 18:54:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:12,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:12,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:12,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:12,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:12,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2025-02-06 18:54:12,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:12,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:12,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:12,456 INFO L124 PetriNetUnfolderBase]: 1532/2882 cut-off events. [2025-02-06 18:54:12,456 INFO L125 PetriNetUnfolderBase]: For 904/1123 co-relation queries the response was YES. [2025-02-06 18:54:12,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6496 conditions, 2882 events. 1532/2882 cut-off events. For 904/1123 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17640 event pairs, 668 based on Foata normal form. 91/2685 useless extension candidates. Maximal degree in co-relation 6477. Up to 1981 conditions per place. [2025-02-06 18:54:12,466 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 66 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2025-02-06 18:54:12,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 528 flow [2025-02-06 18:54:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-02-06 18:54:12,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2025-02-06 18:54:12,467 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 365 flow. Second operand 3 states and 121 transitions. [2025-02-06 18:54:12,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 91 transitions, 528 flow [2025-02-06 18:54:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:12,470 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 385 flow [2025-02-06 18:54:12,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2025-02-06 18:54:12,471 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2025-02-06 18:54:12,471 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 385 flow [2025-02-06 18:54:12,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2025-02-06 18:54:12,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:12,471 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:54:12,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:54:12,471 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:12,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:12,472 INFO L85 PathProgramCache]: Analyzing trace with hash 416691040, now seen corresponding path program 2 times [2025-02-06 18:54:12,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:12,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529217243] [2025-02-06 18:54:12,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:12,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:54:12,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:54:12,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:54:12,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:12,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529217243] [2025-02-06 18:54:12,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529217243] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318085194] [2025-02-06 18:54:12,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:12,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:12,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:12,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:12,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:54:12,553 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:54:12,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:54:12,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:54:12,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:54:12,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:12,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318085194] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:12,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:54:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523850707] [2025-02-06 18:54:12,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:12,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:12,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:12,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:12,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:12,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2025-02-06 18:54:12,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:12,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:12,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:12,827 INFO L124 PetriNetUnfolderBase]: 1532/2807 cut-off events. [2025-02-06 18:54:12,827 INFO L125 PetriNetUnfolderBase]: For 1541/1818 co-relation queries the response was YES. [2025-02-06 18:54:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 2807 events. 1532/2807 cut-off events. For 1541/1818 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16822 event pairs, 1172 based on Foata normal form. 94/2615 useless extension candidates. Maximal degree in co-relation 6587. Up to 2195 conditions per place. [2025-02-06 18:54:12,840 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 47 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2025-02-06 18:54:12,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 501 flow [2025-02-06 18:54:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-02-06 18:54:12,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2025-02-06 18:54:12,842 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 385 flow. Second operand 4 states and 122 transitions. [2025-02-06 18:54:12,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 501 flow [2025-02-06 18:54:12,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 492 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:12,848 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 398 flow [2025-02-06 18:54:12,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2025-02-06 18:54:12,849 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2025-02-06 18:54:12,849 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 398 flow [2025-02-06 18:54:12,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2025-02-06 18:54:12,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:12,849 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:12,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:13,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 18:54:13,050 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:13,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1118327315, now seen corresponding path program 1 times [2025-02-06 18:54:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034567511] [2025-02-06 18:54:13,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:13,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:54:13,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:54:13,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:13,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034567511] [2025-02-06 18:54:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034567511] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087218697] [2025-02-06 18:54:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:13,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:13,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:13,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:13,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:13,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 398 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) [2025-02-06 18:54:13,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:13,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:13,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:13,419 INFO L124 PetriNetUnfolderBase]: 1805/3278 cut-off events. [2025-02-06 18:54:13,419 INFO L125 PetriNetUnfolderBase]: For 1187/1513 co-relation queries the response was YES. [2025-02-06 18:54:13,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7472 conditions, 3278 events. 1805/3278 cut-off events. For 1187/1513 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 19637 event pairs, 1406 based on Foata normal form. 186/3170 useless extension candidates. Maximal degree in co-relation 7450. Up to 2196 conditions per place. [2025-02-06 18:54:13,430 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 68 selfloop transitions, 8 changer transitions 6/103 dead transitions. [2025-02-06 18:54:13,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 103 transitions, 631 flow [2025-02-06 18:54:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:13,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2025-02-06 18:54:13,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5607142857142857 [2025-02-06 18:54:13,432 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 398 flow. Second operand 4 states and 157 transitions. [2025-02-06 18:54:13,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 103 transitions, 631 flow [2025-02-06 18:54:13,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 103 transitions, 599 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:13,435 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 387 flow [2025-02-06 18:54:13,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2025-02-06 18:54:13,437 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2025-02-06 18:54:13,437 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 387 flow [2025-02-06 18:54:13,437 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) [2025-02-06 18:54:13,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:13,437 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-06 18:54:13,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:54:13,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:13,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1028172412, now seen corresponding path program 1 times [2025-02-06 18:54:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973856549] [2025-02-06 18:54:13,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:13,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:13,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:54:13,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:54:13,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:13,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:13,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973856549] [2025-02-06 18:54:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973856549] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670325476] [2025-02-06 18:54:13,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:13,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:13,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:13,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:13,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:54:13,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:54:13,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:54:13,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:13,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:13,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:54:13,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:13,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670325476] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:13,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:54:13,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102380905] [2025-02-06 18:54:13,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:13,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:54:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:13,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:54:13,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:54:13,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:13,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 387 flow. Second operand has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 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) [2025-02-06 18:54:13,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:13,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:13,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:14,304 INFO L124 PetriNetUnfolderBase]: 1823/3363 cut-off events. [2025-02-06 18:54:14,304 INFO L125 PetriNetUnfolderBase]: For 1521/1851 co-relation queries the response was YES. [2025-02-06 18:54:14,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7886 conditions, 3363 events. 1823/3363 cut-off events. For 1521/1851 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 20527 event pairs, 1406 based on Foata normal form. 122/3181 useless extension candidates. Maximal degree in co-relation 7864. Up to 2633 conditions per place. [2025-02-06 18:54:14,316 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 37 selfloop transitions, 62 changer transitions 0/119 dead transitions. [2025-02-06 18:54:14,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 119 transitions, 825 flow [2025-02-06 18:54:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:54:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:54:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 583 transitions. [2025-02-06 18:54:14,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2025-02-06 18:54:14,318 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 387 flow. Second operand 22 states and 583 transitions. [2025-02-06 18:54:14,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 119 transitions, 825 flow [2025-02-06 18:54:14,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 119 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:14,323 INFO L231 Difference]: Finished difference. Result has 111 places, 119 transitions, 784 flow [2025-02-06 18:54:14,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=784, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2025-02-06 18:54:14,323 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 43 predicate places. [2025-02-06 18:54:14,324 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 784 flow [2025-02-06 18:54:14,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 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) [2025-02-06 18:54:14,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:14,324 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:14,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:14,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 18:54:14,525 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:14,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:14,526 INFO L85 PathProgramCache]: Analyzing trace with hash -61098034, now seen corresponding path program 1 times [2025-02-06 18:54:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744915686] [2025-02-06 18:54:14,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:14,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:54:14,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:54:14,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:14,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744915686] [2025-02-06 18:54:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744915686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615366424] [2025-02-06 18:54:14,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:14,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:14,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:14,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:54:14,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:54:14,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:54:14,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:14,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:14,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:54:14,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:14,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:14,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615366424] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:14,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:14,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 18:54:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138900809] [2025-02-06 18:54:14,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:14,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:54:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:14,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:54:14,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:54:14,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:14,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 784 flow. Second operand has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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) [2025-02-06 18:54:14,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:14,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:14,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:15,607 INFO L124 PetriNetUnfolderBase]: 3094/5906 cut-off events. [2025-02-06 18:54:15,607 INFO L125 PetriNetUnfolderBase]: For 2737/3143 co-relation queries the response was YES. [2025-02-06 18:54:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13751 conditions, 5906 events. 3094/5906 cut-off events. For 2737/3143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 41759 event pairs, 1980 based on Foata normal form. 420/5798 useless extension candidates. Maximal degree in co-relation 13722. Up to 2553 conditions per place. [2025-02-06 18:54:15,627 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 98 selfloop transitions, 90 changer transitions 21/229 dead transitions. [2025-02-06 18:54:15,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 229 transitions, 1941 flow [2025-02-06 18:54:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:54:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:54:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 407 transitions. [2025-02-06 18:54:15,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4153061224489796 [2025-02-06 18:54:15,629 INFO L175 Difference]: Start difference. First operand has 111 places, 119 transitions, 784 flow. Second operand 14 states and 407 transitions. [2025-02-06 18:54:15,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 229 transitions, 1941 flow [2025-02-06 18:54:15,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 229 transitions, 1631 flow, removed 101 selfloop flow, removed 9 redundant places. [2025-02-06 18:54:15,636 INFO L231 Difference]: Finished difference. Result has 119 places, 164 transitions, 1182 flow [2025-02-06 18:54:15,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1182, PETRI_PLACES=119, PETRI_TRANSITIONS=164} [2025-02-06 18:54:15,637 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 51 predicate places. [2025-02-06 18:54:15,637 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 164 transitions, 1182 flow [2025-02-06 18:54:15,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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) [2025-02-06 18:54:15,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:15,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:15,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:54:15,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 18:54:15,839 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:15,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash 630975994, now seen corresponding path program 1 times [2025-02-06 18:54:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234100912] [2025-02-06 18:54:15,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:15,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:54:15,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:54:15,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:15,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234100912] [2025-02-06 18:54:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234100912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839879765] [2025-02-06 18:54:15,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:15,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:15,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:54:16,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:54:16,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:54:16,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:16,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:16,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:16,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:54:16,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839879765] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:16,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-02-06 18:54:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460687392] [2025-02-06 18:54:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:16,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:16,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:16,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:16,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:54:16,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:16,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 164 transitions, 1182 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2025-02-06 18:54:16,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:16,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:16,287 INFO L124 PetriNetUnfolderBase]: 2173/4303 cut-off events. [2025-02-06 18:54:16,287 INFO L125 PetriNetUnfolderBase]: For 2736/3045 co-relation queries the response was YES. [2025-02-06 18:54:16,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10082 conditions, 4303 events. 2173/4303 cut-off events. For 2736/3045 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 30163 event pairs, 1721 based on Foata normal form. 359/4299 useless extension candidates. Maximal degree in co-relation 10049. Up to 3273 conditions per place. [2025-02-06 18:54:16,309 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 140 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2025-02-06 18:54:16,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 162 transitions, 1456 flow [2025-02-06 18:54:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-02-06 18:54:16,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-02-06 18:54:16,310 INFO L175 Difference]: Start difference. First operand has 119 places, 164 transitions, 1182 flow. Second operand 3 states and 110 transitions. [2025-02-06 18:54:16,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 162 transitions, 1456 flow [2025-02-06 18:54:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 162 transitions, 1443 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:16,319 INFO L231 Difference]: Finished difference. Result has 117 places, 162 transitions, 1163 flow [2025-02-06 18:54:16,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1163, PETRI_PLACES=117, PETRI_TRANSITIONS=162} [2025-02-06 18:54:16,320 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 49 predicate places. [2025-02-06 18:54:16,321 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 162 transitions, 1163 flow [2025-02-06 18:54:16,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2025-02-06 18:54:16,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:16,321 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:16,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:54:16,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:16,522 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:16,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:16,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1920969098, now seen corresponding path program 2 times [2025-02-06 18:54:16,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:16,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827046522] [2025-02-06 18:54:16,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:16,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:16,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 18:54:16,539 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:16,539 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:16,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827046522] [2025-02-06 18:54:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827046522] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702300845] [2025-02-06 18:54:16,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:16,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:16,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:16,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:54:16,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 18:54:16,663 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:16,663 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:54:16,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:16,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:16,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:16,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:16,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702300845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:16,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:16,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-06 18:54:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945482475] [2025-02-06 18:54:16,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:16,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:16,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:16,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:16,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:54:16,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:16,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 162 transitions, 1163 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2025-02-06 18:54:16,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:16,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:16,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:17,142 INFO L124 PetriNetUnfolderBase]: 3353/6098 cut-off events. [2025-02-06 18:54:17,142 INFO L125 PetriNetUnfolderBase]: For 3013/3015 co-relation queries the response was YES. [2025-02-06 18:54:17,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14601 conditions, 6098 events. 3353/6098 cut-off events. For 3013/3015 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 41801 event pairs, 1127 based on Foata normal form. 88/5741 useless extension candidates. Maximal degree in co-relation 14567. Up to 1938 conditions per place. [2025-02-06 18:54:17,173 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 168 selfloop transitions, 7 changer transitions 0/191 dead transitions. [2025-02-06 18:54:17,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 191 transitions, 1595 flow [2025-02-06 18:54:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2025-02-06 18:54:17,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-02-06 18:54:17,175 INFO L175 Difference]: Start difference. First operand has 117 places, 162 transitions, 1163 flow. Second operand 4 states and 150 transitions. [2025-02-06 18:54:17,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 191 transitions, 1595 flow [2025-02-06 18:54:17,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 191 transitions, 1594 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:17,184 INFO L231 Difference]: Finished difference. Result has 118 places, 161 transitions, 1172 flow [2025-02-06 18:54:17,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1172, PETRI_PLACES=118, PETRI_TRANSITIONS=161} [2025-02-06 18:54:17,185 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 50 predicate places. [2025-02-06 18:54:17,185 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 161 transitions, 1172 flow [2025-02-06 18:54:17,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2025-02-06 18:54:17,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:17,186 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] [2025-02-06 18:54:17,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:17,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:17,386 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:17,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1412743916, now seen corresponding path program 1 times [2025-02-06 18:54:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545117353] [2025-02-06 18:54:17,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:17,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:54:17,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:17,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:17,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:17,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545117353] [2025-02-06 18:54:17,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545117353] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347624715] [2025-02-06 18:54:17,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:17,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:17,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:17,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:54:17,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:54:17,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:54:17,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:17,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:17,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:54:17,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:17,854 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 [2025-02-06 18:54:18,034 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 18:54:18,034 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 [2025-02-06 18:54:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:18,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:18,206 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 [2025-02-06 18:54:18,210 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 [2025-02-06 18:54:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347624715] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:18,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:18,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-02-06 18:54:18,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399356607] [2025-02-06 18:54:18,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:18,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:54:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:18,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:54:18,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:54:18,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2025-02-06 18:54:18,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 161 transitions, 1172 flow. Second operand has 20 states, 20 states have (on average 20.4) internal successors, (408), 20 states have internal predecessors, (408), 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) [2025-02-06 18:54:18,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:18,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2025-02-06 18:54:18,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:19,782 INFO L124 PetriNetUnfolderBase]: 7477/12648 cut-off events. [2025-02-06 18:54:19,782 INFO L125 PetriNetUnfolderBase]: For 10427/11256 co-relation queries the response was YES. [2025-02-06 18:54:19,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31634 conditions, 12648 events. 7477/12648 cut-off events. For 10427/11256 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 91406 event pairs, 2410 based on Foata normal form. 553/11921 useless extension candidates. Maximal degree in co-relation 31600. Up to 3043 conditions per place. [2025-02-06 18:54:19,845 INFO L140 encePairwiseOnDemand]: 59/70 looper letters, 179 selfloop transitions, 108 changer transitions 6/308 dead transitions. [2025-02-06 18:54:19,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 308 transitions, 2352 flow [2025-02-06 18:54:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:54:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:54:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 442 transitions. [2025-02-06 18:54:19,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42095238095238097 [2025-02-06 18:54:19,850 INFO L175 Difference]: Start difference. First operand has 118 places, 161 transitions, 1172 flow. Second operand 15 states and 442 transitions. [2025-02-06 18:54:19,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 308 transitions, 2352 flow [2025-02-06 18:54:19,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 308 transitions, 2278 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:19,863 INFO L231 Difference]: Finished difference. Result has 133 places, 168 transitions, 1502 flow [2025-02-06 18:54:19,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1502, PETRI_PLACES=133, PETRI_TRANSITIONS=168} [2025-02-06 18:54:19,864 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 65 predicate places. [2025-02-06 18:54:19,864 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 168 transitions, 1502 flow [2025-02-06 18:54:19,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.4) internal successors, (408), 20 states have internal predecessors, (408), 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) [2025-02-06 18:54:19,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:19,864 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:19,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:20,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:20,065 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:20,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash 579500767, now seen corresponding path program 1 times [2025-02-06 18:54:20,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:20,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121547307] [2025-02-06 18:54:20,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:20,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:54:20,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:54:20,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:20,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:20,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121547307] [2025-02-06 18:54:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121547307] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112549947] [2025-02-06 18:54:20,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:20,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:20,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:20,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:20,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:54:20,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:54:20,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:54:20,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:20,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:20,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:54:20,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:20,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112549947] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:20,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:20,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:54:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623728719] [2025-02-06 18:54:20,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:20,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:54:20,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:20,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:54:20,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:54:20,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2025-02-06 18:54:20,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 168 transitions, 1502 flow. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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) [2025-02-06 18:54:20,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:20,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2025-02-06 18:54:20,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:21,793 INFO L124 PetriNetUnfolderBase]: 9059/16917 cut-off events. [2025-02-06 18:54:21,793 INFO L125 PetriNetUnfolderBase]: For 14236/14694 co-relation queries the response was YES. [2025-02-06 18:54:21,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43265 conditions, 16917 events. 9059/16917 cut-off events. For 14236/14694 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 132069 event pairs, 2838 based on Foata normal form. 0/16326 useless extension candidates. Maximal degree in co-relation 43226. Up to 6387 conditions per place. [2025-02-06 18:54:21,886 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 308 selfloop transitions, 13 changer transitions 0/340 dead transitions. [2025-02-06 18:54:21,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 340 transitions, 2862 flow [2025-02-06 18:54:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:54:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:54:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2025-02-06 18:54:21,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5614285714285714 [2025-02-06 18:54:21,888 INFO L175 Difference]: Start difference. First operand has 133 places, 168 transitions, 1502 flow. Second operand 10 states and 393 transitions. [2025-02-06 18:54:21,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 340 transitions, 2862 flow [2025-02-06 18:54:21,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 340 transitions, 2768 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-02-06 18:54:21,921 INFO L231 Difference]: Finished difference. Result has 141 places, 177 transitions, 1536 flow [2025-02-06 18:54:21,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1536, PETRI_PLACES=141, PETRI_TRANSITIONS=177} [2025-02-06 18:54:21,921 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 73 predicate places. [2025-02-06 18:54:21,921 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 177 transitions, 1536 flow [2025-02-06 18:54:21,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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) [2025-02-06 18:54:21,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:21,922 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] [2025-02-06 18:54:21,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:22,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 18:54:22,123 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:22,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 845389111, now seen corresponding path program 1 times [2025-02-06 18:54:22,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:22,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482005808] [2025-02-06 18:54:22,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:22,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:22,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:54:22,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:54:22,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:22,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:22,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482005808] [2025-02-06 18:54:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482005808] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412972244] [2025-02-06 18:54:22,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:22,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:22,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:22,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:22,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 18:54:22,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:54:22,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:54:22,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:22,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:22,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:54:22,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:22,539 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 [2025-02-06 18:54:22,676 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 18:54:22,676 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 [2025-02-06 18:54:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:22,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:22,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-06 18:54:22,854 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 [2025-02-06 18:54:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:22,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412972244] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:22,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-02-06 18:54:22,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047847162] [2025-02-06 18:54:22,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:22,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:54:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:22,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:54:22,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:54:23,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2025-02-06 18:54:23,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 177 transitions, 1536 flow. Second operand has 20 states, 20 states have (on average 21.4) internal successors, (428), 20 states have internal predecessors, (428), 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) [2025-02-06 18:54:23,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:23,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2025-02-06 18:54:23,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:24,933 INFO L124 PetriNetUnfolderBase]: 9175/15450 cut-off events. [2025-02-06 18:54:24,933 INFO L125 PetriNetUnfolderBase]: For 17761/18393 co-relation queries the response was YES. [2025-02-06 18:54:24,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44416 conditions, 15450 events. 9175/15450 cut-off events. For 17761/18393 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 111259 event pairs, 3154 based on Foata normal form. 428/15494 useless extension candidates. Maximal degree in co-relation 44375. Up to 4879 conditions per place. [2025-02-06 18:54:25,019 INFO L140 encePairwiseOnDemand]: 59/70 looper letters, 225 selfloop transitions, 107 changer transitions 9/362 dead transitions. [2025-02-06 18:54:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 362 transitions, 3100 flow [2025-02-06 18:54:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:54:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:54:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 451 transitions. [2025-02-06 18:54:25,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42952380952380953 [2025-02-06 18:54:25,021 INFO L175 Difference]: Start difference. First operand has 141 places, 177 transitions, 1536 flow. Second operand 15 states and 451 transitions. [2025-02-06 18:54:25,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 362 transitions, 3100 flow [2025-02-06 18:54:25,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 362 transitions, 2938 flow, removed 67 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:25,050 INFO L231 Difference]: Finished difference. Result has 154 places, 178 transitions, 1734 flow [2025-02-06 18:54:25,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1734, PETRI_PLACES=154, PETRI_TRANSITIONS=178} [2025-02-06 18:54:25,050 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 86 predicate places. [2025-02-06 18:54:25,050 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 178 transitions, 1734 flow [2025-02-06 18:54:25,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.4) internal successors, (428), 20 states have internal predecessors, (428), 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) [2025-02-06 18:54:25,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:25,051 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, 1] [2025-02-06 18:54:25,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:25,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 18:54:25,255 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:25,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash -224646677, now seen corresponding path program 1 times [2025-02-06 18:54:25,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:25,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326582777] [2025-02-06 18:54:25,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:25,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:25,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:54:25,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:54:25,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:25,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:25,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:25,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326582777] [2025-02-06 18:54:25,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326582777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:25,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772514828] [2025-02-06 18:54:25,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:25,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:25,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:25,787 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:25,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 18:54:25,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:54:25,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:54:25,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:25,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:25,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 18:54:25,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:25,912 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 [2025-02-06 18:54:26,208 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 18:54:26,208 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 [2025-02-06 18:54:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:26,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:26,443 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 [2025-02-06 18:54:26,446 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 [2025-02-06 18:54:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:26,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772514828] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:26,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:26,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-02-06 18:54:26,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183494875] [2025-02-06 18:54:26,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:26,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:54:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:26,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:54:26,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:54:26,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2025-02-06 18:54:26,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 178 transitions, 1734 flow. Second operand has 23 states, 23 states have (on average 20.608695652173914) internal successors, (474), 23 states have internal predecessors, (474), 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) [2025-02-06 18:54:26,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:26,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2025-02-06 18:54:26,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:29,836 INFO L124 PetriNetUnfolderBase]: 15258/26033 cut-off events. [2025-02-06 18:54:29,837 INFO L125 PetriNetUnfolderBase]: For 29241/30705 co-relation queries the response was YES. [2025-02-06 18:54:29,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73971 conditions, 26033 events. 15258/26033 cut-off events. For 29241/30705 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 204904 event pairs, 2696 based on Foata normal form. 0/24568 useless extension candidates. Maximal degree in co-relation 73927. Up to 3430 conditions per place. [2025-02-06 18:54:29,998 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 280 selfloop transitions, 111 changer transitions 9/421 dead transitions. [2025-02-06 18:54:29,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 421 transitions, 3580 flow [2025-02-06 18:54:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:54:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:54:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 501 transitions. [2025-02-06 18:54:30,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42100840336134454 [2025-02-06 18:54:30,000 INFO L175 Difference]: Start difference. First operand has 154 places, 178 transitions, 1734 flow. Second operand 17 states and 501 transitions. [2025-02-06 18:54:30,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 421 transitions, 3580 flow [2025-02-06 18:54:30,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 421 transitions, 3433 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-02-06 18:54:30,079 INFO L231 Difference]: Finished difference. Result has 161 places, 186 transitions, 1870 flow [2025-02-06 18:54:30,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1870, PETRI_PLACES=161, PETRI_TRANSITIONS=186} [2025-02-06 18:54:30,080 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 93 predicate places. [2025-02-06 18:54:30,080 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 186 transitions, 1870 flow [2025-02-06 18:54:30,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 20.608695652173914) internal successors, (474), 23 states have internal predecessors, (474), 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) [2025-02-06 18:54:30,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:30,081 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] [2025-02-06 18:54:30,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 18:54:30,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:54:30,285 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:30,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash 734808262, now seen corresponding path program 1 times [2025-02-06 18:54:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695189896] [2025-02-06 18:54:30,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:30,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:54:30,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:54:30,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:30,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:54:30,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695189896] [2025-02-06 18:54:30,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695189896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226136411] [2025-02-06 18:54:30,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:30,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:30,561 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:30,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 18:54:30,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:54:30,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:54:30,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:30,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:30,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 18:54:30,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:30,642 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 [2025-02-06 18:54:30,664 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 [2025-02-06 18:54:30,712 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:54:30,712 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 [2025-02-06 18:54:30,730 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 [2025-02-06 18:54:30,746 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 [2025-02-06 18:54:30,764 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 [2025-02-06 18:54:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:30,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:31,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:31,306 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 [2025-02-06 18:54:31,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:31,312 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 [2025-02-06 18:54:31,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:54:31,319 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 [2025-02-06 18:54:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:54:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226136411] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:31,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2025-02-06 18:54:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276070099] [2025-02-06 18:54:31,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:31,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 18:54:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:31,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 18:54:31,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=381, Unknown=1, NotChecked=0, Total=462 [2025-02-06 18:54:31,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 70 [2025-02-06 18:54:31,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 186 transitions, 1870 flow. Second operand has 22 states, 22 states have (on average 17.727272727272727) internal successors, (390), 22 states have internal predecessors, (390), 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) [2025-02-06 18:54:31,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:31,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 70 [2025-02-06 18:54:31,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:36,080 INFO L124 PetriNetUnfolderBase]: 22839/36994 cut-off events. [2025-02-06 18:54:36,080 INFO L125 PetriNetUnfolderBase]: For 36903/38302 co-relation queries the response was YES. [2025-02-06 18:54:36,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108353 conditions, 36994 events. 22839/36994 cut-off events. For 36903/38302 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 287379 event pairs, 8985 based on Foata normal form. 214/35839 useless extension candidates. Maximal degree in co-relation 108307. Up to 16091 conditions per place. [2025-02-06 18:54:36,418 INFO L140 encePairwiseOnDemand]: 55/70 looper letters, 301 selfloop transitions, 83 changer transitions 12/413 dead transitions. [2025-02-06 18:54:36,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 413 transitions, 3703 flow [2025-02-06 18:54:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 18:54:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-06 18:54:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 575 transitions. [2025-02-06 18:54:36,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34226190476190477 [2025-02-06 18:54:36,420 INFO L175 Difference]: Start difference. First operand has 161 places, 186 transitions, 1870 flow. Second operand 24 states and 575 transitions. [2025-02-06 18:54:36,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 413 transitions, 3703 flow [2025-02-06 18:54:36,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 413 transitions, 3538 flow, removed 15 selfloop flow, removed 8 redundant places. [2025-02-06 18:54:36,543 INFO L231 Difference]: Finished difference. Result has 183 places, 213 transitions, 2193 flow [2025-02-06 18:54:36,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2193, PETRI_PLACES=183, PETRI_TRANSITIONS=213} [2025-02-06 18:54:36,544 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 115 predicate places. [2025-02-06 18:54:36,544 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 213 transitions, 2193 flow [2025-02-06 18:54:36,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.727272727272727) internal successors, (390), 22 states have internal predecessors, (390), 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) [2025-02-06 18:54:36,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:36,544 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, 1, 1] [2025-02-06 18:54:36,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 18:54:36,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:36,745 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:36,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -832498197, now seen corresponding path program 1 times [2025-02-06 18:54:36,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:36,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967426754] [2025-02-06 18:54:36,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:36,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:54:36,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:54:36,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:36,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:37,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967426754] [2025-02-06 18:54:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967426754] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722252592] [2025-02-06 18:54:37,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:37,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:37,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:37,056 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:37,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 18:54:37,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:54:37,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:54:37,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:37,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:37,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 18:54:37,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:37,175 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 [2025-02-06 18:54:37,403 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 [2025-02-06 18:54:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:37,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:37,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-06 18:54:37,657 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 [2025-02-06 18:54:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722252592] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:37,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-02-06 18:54:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197216533] [2025-02-06 18:54:37,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:37,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:54:37,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:37,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:54:37,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:54:37,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2025-02-06 18:54:37,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 213 transitions, 2193 flow. Second operand has 23 states, 23 states have (on average 21.73913043478261) internal successors, (500), 23 states have internal predecessors, (500), 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) [2025-02-06 18:54:37,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:37,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2025-02-06 18:54:37,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:41,403 INFO L124 PetriNetUnfolderBase]: 16233/29474 cut-off events. [2025-02-06 18:54:41,404 INFO L125 PetriNetUnfolderBase]: For 42815/44336 co-relation queries the response was YES. [2025-02-06 18:54:41,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91276 conditions, 29474 events. 16233/29474 cut-off events. For 42815/44336 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 255943 event pairs, 4349 based on Foata normal form. 694/30018 useless extension candidates. Maximal degree in co-relation 91222. Up to 4786 conditions per place. [2025-02-06 18:54:41,687 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 385 selfloop transitions, 116 changer transitions 9/538 dead transitions. [2025-02-06 18:54:41,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 538 transitions, 4978 flow [2025-02-06 18:54:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 18:54:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 18:54:41,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 551 transitions. [2025-02-06 18:54:41,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4373015873015873 [2025-02-06 18:54:41,689 INFO L175 Difference]: Start difference. First operand has 183 places, 213 transitions, 2193 flow. Second operand 18 states and 551 transitions. [2025-02-06 18:54:41,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 538 transitions, 4978 flow [2025-02-06 18:54:41,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 538 transitions, 4780 flow, removed 41 selfloop flow, removed 11 redundant places. [2025-02-06 18:54:41,801 INFO L231 Difference]: Finished difference. Result has 192 places, 218 transitions, 2337 flow [2025-02-06 18:54:41,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2337, PETRI_PLACES=192, PETRI_TRANSITIONS=218} [2025-02-06 18:54:41,801 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 124 predicate places. [2025-02-06 18:54:41,802 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 218 transitions, 2337 flow [2025-02-06 18:54:41,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.73913043478261) internal successors, (500), 23 states have internal predecessors, (500), 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) [2025-02-06 18:54:41,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:41,802 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:41,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 18:54:42,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:42,003 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:42,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1866852187, now seen corresponding path program 1 times [2025-02-06 18:54:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230088325] [2025-02-06 18:54:42,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:42,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:42,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:54:42,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:54:42,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:42,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:54:42,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:42,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230088325] [2025-02-06 18:54:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230088325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:42,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:42,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941410955] [2025-02-06 18:54:42,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:42,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:42,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:42,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:42,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:42,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:54:42,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 218 transitions, 2337 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2025-02-06 18:54:42,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:42,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:54:42,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:46,089 INFO L124 PetriNetUnfolderBase]: 18351/37068 cut-off events. [2025-02-06 18:54:46,089 INFO L125 PetriNetUnfolderBase]: For 69961/71919 co-relation queries the response was YES. [2025-02-06 18:54:46,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116044 conditions, 37068 events. 18351/37068 cut-off events. For 69961/71919 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 344198 event pairs, 4213 based on Foata normal form. 826/37529 useless extension candidates. Maximal degree in co-relation 115988. Up to 10454 conditions per place. [2025-02-06 18:54:46,623 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 253 selfloop transitions, 12 changer transitions 0/296 dead transitions. [2025-02-06 18:54:46,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 296 transitions, 3321 flow [2025-02-06 18:54:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-02-06 18:54:46,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-06 18:54:46,624 INFO L175 Difference]: Start difference. First operand has 192 places, 218 transitions, 2337 flow. Second operand 4 states and 176 transitions. [2025-02-06 18:54:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 296 transitions, 3321 flow [2025-02-06 18:54:46,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 296 transitions, 3148 flow, removed 8 selfloop flow, removed 11 redundant places. [2025-02-06 18:54:46,972 INFO L231 Difference]: Finished difference. Result has 183 places, 216 transitions, 2238 flow [2025-02-06 18:54:46,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2238, PETRI_PLACES=183, PETRI_TRANSITIONS=216} [2025-02-06 18:54:46,972 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 115 predicate places. [2025-02-06 18:54:46,972 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 216 transitions, 2238 flow [2025-02-06 18:54:46,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2025-02-06 18:54:46,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:46,973 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, 1] [2025-02-06 18:54:46,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 18:54:46,973 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:46,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1902168563, now seen corresponding path program 2 times [2025-02-06 18:54:46,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:46,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195619429] [2025-02-06 18:54:46,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:46,979 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 18:54:47,008 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 27 statements. [2025-02-06 18:54:47,008 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:54:47,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 18:54:47,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:47,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195619429] [2025-02-06 18:54:47,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195619429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:47,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:47,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:47,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724384078] [2025-02-06 18:54:47,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:47,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:47,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:47,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:54:47,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2025-02-06 18:54:47,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 216 transitions, 2238 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2025-02-06 18:54:47,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:47,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2025-02-06 18:54:47,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:52,999 INFO L124 PetriNetUnfolderBase]: 32543/55358 cut-off events. [2025-02-06 18:54:53,000 INFO L125 PetriNetUnfolderBase]: For 121481/124982 co-relation queries the response was YES. [2025-02-06 18:54:53,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187158 conditions, 55358 events. 32543/55358 cut-off events. For 121481/124982 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 463293 event pairs, 12526 based on Foata normal form. 573/54713 useless extension candidates. Maximal degree in co-relation 187100. Up to 43025 conditions per place. [2025-02-06 18:54:53,677 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 223 selfloop transitions, 7 changer transitions 1/257 dead transitions. [2025-02-06 18:54:53,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 257 transitions, 2883 flow [2025-02-06 18:54:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-02-06 18:54:53,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2025-02-06 18:54:53,678 INFO L175 Difference]: Start difference. First operand has 183 places, 216 transitions, 2238 flow. Second operand 5 states and 181 transitions. [2025-02-06 18:54:53,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 257 transitions, 2883 flow [2025-02-06 18:54:54,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 257 transitions, 2871 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-06 18:54:54,455 INFO L231 Difference]: Finished difference. Result has 189 places, 217 transitions, 2264 flow [2025-02-06 18:54:54,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2264, PETRI_PLACES=189, PETRI_TRANSITIONS=217} [2025-02-06 18:54:54,456 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 121 predicate places. [2025-02-06 18:54:54,456 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 217 transitions, 2264 flow [2025-02-06 18:54:54,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2025-02-06 18:54:54,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:54,456 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:54,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:54:54,456 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:54:54,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash 691739678, now seen corresponding path program 2 times [2025-02-06 18:54:54,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612767324] [2025-02-06 18:54:54,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:54,462 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 18:54:54,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 29 statements. [2025-02-06 18:54:54,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:54:54,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 18:54:54,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:54,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612767324] [2025-02-06 18:54:54,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612767324] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:54,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665619890] [2025-02-06 18:54:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:54,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:54,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:54,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:54:54,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2025-02-06 18:54:54,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 217 transitions, 2264 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2025-02-06 18:54:54,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:54,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2025-02-06 18:54:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:59,534 INFO L124 PetriNetUnfolderBase]: 27812/48494 cut-off events. [2025-02-06 18:54:59,535 INFO L125 PetriNetUnfolderBase]: For 110310/113526 co-relation queries the response was YES. [2025-02-06 18:54:59,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163145 conditions, 48494 events. 27812/48494 cut-off events. For 110310/113526 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 407829 event pairs, 7278 based on Foata normal form. 828/48244 useless extension candidates. Maximal degree in co-relation 163083. Up to 32606 conditions per place. [2025-02-06 18:54:59,973 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 242 selfloop transitions, 14 changer transitions 0/283 dead transitions. [2025-02-06 18:54:59,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 283 transitions, 3106 flow [2025-02-06 18:54:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2025-02-06 18:54:59,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54 [2025-02-06 18:54:59,974 INFO L175 Difference]: Start difference. First operand has 189 places, 217 transitions, 2264 flow. Second operand 5 states and 189 transitions. [2025-02-06 18:54:59,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 283 transitions, 3106 flow [2025-02-06 18:55:00,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 283 transitions, 3005 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:55:00,375 INFO L231 Difference]: Finished difference. Result has 190 places, 221 transitions, 2257 flow [2025-02-06 18:55:00,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2257, PETRI_PLACES=190, PETRI_TRANSITIONS=221} [2025-02-06 18:55:00,376 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 122 predicate places. [2025-02-06 18:55:00,378 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 221 transitions, 2257 flow [2025-02-06 18:55:00,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2025-02-06 18:55:00,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:55:00,378 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, 1, 1, 1, 1, 1, 1] [2025-02-06 18:55:00,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 18:55:00,378 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:55:00,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:55:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash -760886150, now seen corresponding path program 1 times [2025-02-06 18:55:00,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:55:00,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782339843] [2025-02-06 18:55:00,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:00,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:55:00,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:55:00,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:55:00,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:00,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:55:00,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:55:00,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782339843] [2025-02-06 18:55:00,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782339843] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:55:00,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179176977] [2025-02-06 18:55:00,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:55:00,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:55:00,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:55:00,466 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:55:00,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 18:55:00,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:55:00,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:55:00,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:55:00,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:55:00,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:55:00,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:55:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:55:00,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:55:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179176977] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:55:00,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:55:00,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-02-06 18:55:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452817330] [2025-02-06 18:55:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:55:00,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:55:00,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:55:00,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:55:00,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:55:00,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2025-02-06 18:55:00,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 221 transitions, 2257 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2025-02-06 18:55:00,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:55:00,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2025-02-06 18:55:00,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand