./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 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-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:52:52,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:52:52,879 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:52:52,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:52:52,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:52:52,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:52:52,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:52:52,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:52:52,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:52:52,900 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:52:52,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:52:52,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:52:52,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:52:52,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:52:52,900 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:52:52,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:52:52,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:52:52,901 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:52,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:52,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:52,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:52:52,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:52:52,902 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 -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2025-01-10 06:52:53,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:52:53,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:52:53,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:52:53,162 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:52:53,162 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:52:53,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2025-01-10 06:52:54,445 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2da6fc97e/3916cb82c0374072bdaecb6f0233a0b6/FLAGce1ca58aa [2025-01-10 06:52:54,684 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:52:54,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2025-01-10 06:52:54,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2da6fc97e/3916cb82c0374072bdaecb6f0233a0b6/FLAGce1ca58aa [2025-01-10 06:52:54,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2da6fc97e/3916cb82c0374072bdaecb6f0233a0b6 [2025-01-10 06:52:54,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:52:54,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:52:54,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:54,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:52:55,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:52:55,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:54" (1/1) ... [2025-01-10 06:52:55,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b59dc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55, skipping insertion in model container [2025-01-10 06:52:55,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:54" (1/1) ... [2025-01-10 06:52:55,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:52:55,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:55,146 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:52:55,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:55,204 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:52:55,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55 WrapperNode [2025-01-10 06:52:55,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:55,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:55,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:52:55,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:52:55,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,231 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 328 [2025-01-10 06:52:55,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:55,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:52:55,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:52:55,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:52:55,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,276 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-01-10 06:52:55,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,290 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:52:55,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:52:55,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:52:55,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:52:55,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (1/1) ... [2025-01-10 06:52:55,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:55,349 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) [2025-01-10 06:52:55,352 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 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:52:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:52:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:52:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:52:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:52:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:52:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:52:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:52:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:52:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:52:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:52:55,399 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:52:55,511 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:52:55,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:52:55,885 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:52:55,885 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:52:56,258 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:52:56,258 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-10 06:52:56,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:56 BoogieIcfgContainer [2025-01-10 06:52:56,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:52:56,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:52:56,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:52:56,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:52:56,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:54" (1/3) ... [2025-01-10 06:52:56,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aed62c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:56, skipping insertion in model container [2025-01-10 06:52:56,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:55" (2/3) ... [2025-01-10 06:52:56,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aed62c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:56, skipping insertion in model container [2025-01-10 06:52:56,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:56" (3/3) ... [2025-01-10 06:52:56,271 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2025-01-10 06:52:56,284 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:52:56,285 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring.wvr.c that has 4 procedures, 80 locations, 1 initial locations, 6 loop locations, and 32 error locations. [2025-01-10 06:52:56,285 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:52:56,380 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:52:56,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 195 flow [2025-01-10 06:52:56,440 INFO L124 PetriNetUnfolderBase]: 8/84 cut-off events. [2025-01-10 06:52:56,442 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:52:56,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 8/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 337 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2025-01-10 06:52:56,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 195 flow [2025-01-10 06:52:56,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 82 transitions, 179 flow [2025-01-10 06:52:56,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:52:56,464 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;@6de8b799, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:52:56,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2025-01-10 06:52:56,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:52:56,475 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:52:56,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:52:56,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:56,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:52:56,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:56,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash 983270, now seen corresponding path program 1 times [2025-01-10 06:52:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:56,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043569924] [2025-01-10 06:52:56,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:56,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:56,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:52:56,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:52:56,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:56,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043569924] [2025-01-10 06:52:56,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043569924] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:56,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:56,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660842153] [2025-01-10 06:52:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:56,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:56,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:56,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:56,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2025-01-10 06:52:56,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-01-10 06:52:56,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:56,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2025-01-10 06:52:56,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:57,912 INFO L124 PetriNetUnfolderBase]: 5426/8789 cut-off events. [2025-01-10 06:52:57,913 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-01-10 06:52:57,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 8789 events. 5426/8789 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 60445 event pairs, 4968 based on Foata normal form. 3/5771 useless extension candidates. Maximal degree in co-relation 15898. Up to 7538 conditions per place. [2025-01-10 06:52:57,975 INFO L140 encePairwiseOnDemand]: 62/87 looper letters, 51 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2025-01-10 06:52:57,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 301 flow [2025-01-10 06:52:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:52:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:52:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2025-01-10 06:52:57,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2025-01-10 06:52:57,989 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 179 flow. Second operand 4 states and 172 transitions. [2025-01-10 06:52:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 301 flow [2025-01-10 06:52:58,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 292 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:52:58,008 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 240 flow [2025-01-10 06:52:58,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2025-01-10 06:52:58,013 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2025-01-10 06:52:58,014 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 240 flow [2025-01-10 06:52:58,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-01-10 06:52:58,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:58,015 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:52:58,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:52:58,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:58,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash -771149909, now seen corresponding path program 1 times [2025-01-10 06:52:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330886409] [2025-01-10 06:52:58,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:58,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:58,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:58,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:58,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:58,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330886409] [2025-01-10 06:52:58,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330886409] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583217391] [2025-01-10 06:52:58,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:58,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:58,194 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) [2025-01-10 06:52:58,196 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 [2025-01-10 06:52:58,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:58,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:58,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:58,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:58,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:58,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:58,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:52:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583217391] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:52:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:52:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832445201] [2025-01-10 06:52:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:58,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:52:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:58,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:52:58,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:52:58,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2025-01-10 06:52:58,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2025-01-10 06:52:58,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:58,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2025-01-10 06:52:58,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:59,183 INFO L124 PetriNetUnfolderBase]: 5426/8786 cut-off events. [2025-01-10 06:52:59,184 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-01-10 06:52:59,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16576 conditions, 8786 events. 5426/8786 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 60423 event pairs, 4968 based on Foata normal form. 3/5773 useless extension candidates. Maximal degree in co-relation 16503. Up to 7523 conditions per place. [2025-01-10 06:52:59,247 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 41 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2025-01-10 06:52:59,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 344 flow [2025-01-10 06:52:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:52:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:52:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2025-01-10 06:52:59,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39272030651340994 [2025-01-10 06:52:59,251 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 240 flow. Second operand 6 states and 205 transitions. [2025-01-10 06:52:59,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 344 flow [2025-01-10 06:52:59,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:52:59,253 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 262 flow [2025-01-10 06:52:59,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2025-01-10 06:52:59,254 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2025-01-10 06:52:59,254 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 262 flow [2025-01-10 06:52:59,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2025-01-10 06:52:59,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:59,254 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:52:59,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:52:59,459 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 [2025-01-10 06:52:59,459 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:52:59,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1864157629, now seen corresponding path program 1 times [2025-01-10 06:52:59,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:59,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951722440] [2025-01-10 06:52:59,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:59,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:59,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:59,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:59,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:59,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951722440] [2025-01-10 06:52:59,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951722440] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89876157] [2025-01-10 06:52:59,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:59,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:59,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:59,546 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) [2025-01-10 06:52:59,549 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 [2025-01-10 06:52:59,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:59,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:59,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:59,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:59,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:59,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:59,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:52:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89876157] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:52:59,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:52:59,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:52:59,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042624571] [2025-01-10 06:52:59,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:52:59,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:52:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:59,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:52:59,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:52:59,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2025-01-10 06:52:59,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 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) [2025-01-10 06:52:59,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:59,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2025-01-10 06:52:59,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:00,767 INFO L124 PetriNetUnfolderBase]: 5435/8822 cut-off events. [2025-01-10 06:53:00,768 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-01-10 06:53:00,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16717 conditions, 8822 events. 5435/8822 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 60916 event pairs, 4968 based on Foata normal form. 9/5815 useless extension candidates. Maximal degree in co-relation 16505. Up to 7538 conditions per place. [2025-01-10 06:53:00,802 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 48 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2025-01-10 06:53:00,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 606 flow [2025-01-10 06:53:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:53:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:53:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 334 transitions. [2025-01-10 06:53:00,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3839080459770115 [2025-01-10 06:53:00,806 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 262 flow. Second operand 10 states and 334 transitions. [2025-01-10 06:53:00,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 606 flow [2025-01-10 06:53:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 523 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-01-10 06:53:00,809 INFO L231 Difference]: Finished difference. Result has 87 places, 106 transitions, 477 flow [2025-01-10 06:53:00,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=87, PETRI_TRANSITIONS=106} [2025-01-10 06:53:00,811 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2025-01-10 06:53:00,811 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 106 transitions, 477 flow [2025-01-10 06:53:00,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 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) [2025-01-10 06:53:00,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:00,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:00,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:53:01,016 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 [2025-01-10 06:53:01,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:01,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1104884018, now seen corresponding path program 1 times [2025-01-10 06:53:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900789445] [2025-01-10 06:53:01,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:53:01,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:53:01,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:01,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900789445] [2025-01-10 06:53:01,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900789445] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:01,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:01,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336321993] [2025-01-10 06:53:01,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:01,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:01,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:01,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:01,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:01,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 106 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2025-01-10 06:53:01,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:01,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:01,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:01,819 INFO L124 PetriNetUnfolderBase]: 5575/9075 cut-off events. [2025-01-10 06:53:01,819 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2025-01-10 06:53:01,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17327 conditions, 9075 events. 5575/9075 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 62026 event pairs, 5091 based on Foata normal form. 134/6198 useless extension candidates. Maximal degree in co-relation 17169. Up to 7564 conditions per place. [2025-01-10 06:53:01,863 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 118 selfloop transitions, 10 changer transitions 1/153 dead transitions. [2025-01-10 06:53:01,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 153 transitions, 985 flow [2025-01-10 06:53:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2025-01-10 06:53:01,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2025-01-10 06:53:01,865 INFO L175 Difference]: Start difference. First operand has 87 places, 106 transitions, 477 flow. Second operand 5 states and 234 transitions. [2025-01-10 06:53:01,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 153 transitions, 985 flow [2025-01-10 06:53:01,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 153 transitions, 925 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:01,869 INFO L231 Difference]: Finished difference. Result has 91 places, 113 transitions, 544 flow [2025-01-10 06:53:01,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=91, PETRI_TRANSITIONS=113} [2025-01-10 06:53:01,870 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2025-01-10 06:53:01,870 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 113 transitions, 544 flow [2025-01-10 06:53:01,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2025-01-10 06:53:01,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:01,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:01,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:53:01,870 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:01,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1314390701, now seen corresponding path program 1 times [2025-01-10 06:53:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477948047] [2025-01-10 06:53:01,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:01,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:01,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477948047] [2025-01-10 06:53:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477948047] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:01,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:01,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936436574] [2025-01-10 06:53:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:01,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:01,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:01,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:01,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:01,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2025-01-10 06:53:01,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:01,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:01,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:02,571 INFO L124 PetriNetUnfolderBase]: 5359/8667 cut-off events. [2025-01-10 06:53:02,572 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2025-01-10 06:53:02,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18304 conditions, 8667 events. 5359/8667 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 58133 event pairs, 1987 based on Foata normal form. 155/5761 useless extension candidates. Maximal degree in co-relation 18148. Up to 6234 conditions per place. [2025-01-10 06:53:02,608 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 107 selfloop transitions, 2 changer transitions 1/134 dead transitions. [2025-01-10 06:53:02,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 821 flow [2025-01-10 06:53:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2025-01-10 06:53:02,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2025-01-10 06:53:02,610 INFO L175 Difference]: Start difference. First operand has 91 places, 113 transitions, 544 flow. Second operand 3 states and 159 transitions. [2025-01-10 06:53:02,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 821 flow [2025-01-10 06:53:02,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 134 transitions, 817 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:02,613 INFO L231 Difference]: Finished difference. Result has 93 places, 113 transitions, 545 flow [2025-01-10 06:53:02,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=93, PETRI_TRANSITIONS=113} [2025-01-10 06:53:02,614 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2025-01-10 06:53:02,614 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 113 transitions, 545 flow [2025-01-10 06:53:02,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2025-01-10 06:53:02,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:02,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:02,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:53:02,614 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:02,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1798862221, now seen corresponding path program 1 times [2025-01-10 06:53:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014759704] [2025-01-10 06:53:02,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:02,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:02,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:02,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:02,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:02,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014759704] [2025-01-10 06:53:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014759704] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659979398] [2025-01-10 06:53:02,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:02,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:02,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:02,779 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) [2025-01-10 06:53:02,788 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 [2025-01-10 06:53:02,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:02,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:02,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:02,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:02,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:02,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:02,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659979398] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:02,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:02,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-01-10 06:53:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322312049] [2025-01-10 06:53:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:02,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:02,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:02,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:02,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:02,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 113 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2025-01-10 06:53:02,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:02,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:02,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:03,379 INFO L124 PetriNetUnfolderBase]: 3834/6242 cut-off events. [2025-01-10 06:53:03,379 INFO L125 PetriNetUnfolderBase]: For 1011/1011 co-relation queries the response was YES. [2025-01-10 06:53:03,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 6242 events. 3834/6242 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38866 event pairs, 3314 based on Foata normal form. 0/4697 useless extension candidates. Maximal degree in co-relation 13092. Up to 5423 conditions per place. [2025-01-10 06:53:03,411 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 85 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2025-01-10 06:53:03,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 705 flow [2025-01-10 06:53:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2025-01-10 06:53:03,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5210727969348659 [2025-01-10 06:53:03,416 INFO L175 Difference]: Start difference. First operand has 93 places, 113 transitions, 545 flow. Second operand 3 states and 136 transitions. [2025-01-10 06:53:03,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 705 flow [2025-01-10 06:53:03,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 110 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:03,420 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 533 flow [2025-01-10 06:53:03,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2025-01-10 06:53:03,421 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2025-01-10 06:53:03,421 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 533 flow [2025-01-10 06:53:03,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2025-01-10 06:53:03,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:03,422 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:03,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:03,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:03,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:03,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -69843894, now seen corresponding path program 1 times [2025-01-10 06:53:03,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:03,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772289134] [2025-01-10 06:53:03,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:03,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:53:03,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:53:03,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:03,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:03,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772289134] [2025-01-10 06:53:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772289134] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:03,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679652360] [2025-01-10 06:53:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:03,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:03,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:03,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:03,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:03,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2025-01-10 06:53:03,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:03,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:03,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:04,279 INFO L124 PetriNetUnfolderBase]: 4119/6900 cut-off events. [2025-01-10 06:53:04,279 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2025-01-10 06:53:04,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14665 conditions, 6900 events. 4119/6900 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45165 event pairs, 1865 based on Foata normal form. 150/5229 useless extension candidates. Maximal degree in co-relation 14647. Up to 3399 conditions per place. [2025-01-10 06:53:04,310 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 104 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2025-01-10 06:53:04,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 130 transitions, 799 flow [2025-01-10 06:53:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-01-10 06:53:04,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5938697318007663 [2025-01-10 06:53:04,311 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 533 flow. Second operand 3 states and 155 transitions. [2025-01-10 06:53:04,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 130 transitions, 799 flow [2025-01-10 06:53:04,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 130 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:04,315 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 546 flow [2025-01-10 06:53:04,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2025-01-10 06:53:04,315 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2025-01-10 06:53:04,315 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 546 flow [2025-01-10 06:53:04,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2025-01-10 06:53:04,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:04,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:04,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:53:04,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:04,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2066901951, now seen corresponding path program 1 times [2025-01-10 06:53:04,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:04,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186416217] [2025-01-10 06:53:04,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:04,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:04,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:53:04,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:53:04,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:04,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186416217] [2025-01-10 06:53:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186416217] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:04,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:04,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679952451] [2025-01-10 06:53:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:04,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:04,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:04,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:04,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:04,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2025-01-10 06:53:04,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:04,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:04,737 INFO L124 PetriNetUnfolderBase]: 3049/5792 cut-off events. [2025-01-10 06:53:04,737 INFO L125 PetriNetUnfolderBase]: For 1130/1130 co-relation queries the response was YES. [2025-01-10 06:53:04,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 5792 events. 3049/5792 cut-off events. For 1130/1130 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41034 event pairs, 1750 based on Foata normal form. 12/4295 useless extension candidates. Maximal degree in co-relation 11995. Up to 4339 conditions per place. [2025-01-10 06:53:04,757 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 93 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2025-01-10 06:53:04,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 763 flow [2025-01-10 06:53:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2025-01-10 06:53:04,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5478927203065134 [2025-01-10 06:53:04,759 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 546 flow. Second operand 3 states and 143 transitions. [2025-01-10 06:53:04,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 763 flow [2025-01-10 06:53:04,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:04,762 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 567 flow [2025-01-10 06:53:04,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=567, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2025-01-10 06:53:04,763 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2025-01-10 06:53:04,763 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 567 flow [2025-01-10 06:53:04,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2025-01-10 06:53:04,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:04,763 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:53:04,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 06:53:04,763 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:04,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1541137442, now seen corresponding path program 2 times [2025-01-10 06:53:04,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:04,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147128387] [2025-01-10 06:53:04,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:04,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:04,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:53:04,773 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:53:04,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:04,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:04,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147128387] [2025-01-10 06:53:04,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147128387] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:04,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637625362] [2025-01-10 06:53:04,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:04,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:04,798 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) [2025-01-10 06:53:04,799 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 [2025-01-10 06:53:04,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:53:04,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:53:04,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:04,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:04,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:04,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:04,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637625362] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:04,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:53:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487363406] [2025-01-10 06:53:04,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:04,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:04,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:04,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:04,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2025-01-10 06:53:04,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2025-01-10 06:53:04,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:04,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2025-01-10 06:53:04,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:05,264 INFO L124 PetriNetUnfolderBase]: 3049/5791 cut-off events. [2025-01-10 06:53:05,264 INFO L125 PetriNetUnfolderBase]: For 2044/2044 co-relation queries the response was YES. [2025-01-10 06:53:05,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12441 conditions, 5791 events. 3049/5791 cut-off events. For 2044/2044 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41055 event pairs, 2521 based on Foata normal form. 1/4283 useless extension candidates. Maximal degree in co-relation 12419. Up to 4517 conditions per place. [2025-01-10 06:53:05,288 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 75 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2025-01-10 06:53:05,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 112 transitions, 739 flow [2025-01-10 06:53:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2025-01-10 06:53:05,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40804597701149425 [2025-01-10 06:53:05,289 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 567 flow. Second operand 4 states and 142 transitions. [2025-01-10 06:53:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 112 transitions, 739 flow [2025-01-10 06:53:05,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 112 transitions, 730 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:05,294 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 580 flow [2025-01-10 06:53:05,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2025-01-10 06:53:05,295 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2025-01-10 06:53:05,295 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 580 flow [2025-01-10 06:53:05,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2025-01-10 06:53:05,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:05,295 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:05,301 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 [2025-01-10 06:53:05,496 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 [2025-01-10 06:53:05,496 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:05,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 125204074, now seen corresponding path program 1 times [2025-01-10 06:53:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060637101] [2025-01-10 06:53:05,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:05,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:53:05,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:53:05,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:05,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:05,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:05,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060637101] [2025-01-10 06:53:05,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060637101] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:05,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:05,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:05,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066155223] [2025-01-10 06:53:05,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:05,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:05,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:05,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:05,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:05,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:05,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2025-01-10 06:53:05,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:05,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:05,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:06,058 INFO L124 PetriNetUnfolderBase]: 3201/6107 cut-off events. [2025-01-10 06:53:06,058 INFO L125 PetriNetUnfolderBase]: For 1365/1365 co-relation queries the response was YES. [2025-01-10 06:53:06,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12806 conditions, 6107 events. 3201/6107 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42832 event pairs, 2666 based on Foata normal form. 40/4632 useless extension candidates. Maximal degree in co-relation 12783. Up to 4515 conditions per place. [2025-01-10 06:53:06,077 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 90 selfloop transitions, 10 changer transitions 19/142 dead transitions. [2025-01-10 06:53:06,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 142 transitions, 969 flow [2025-01-10 06:53:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2025-01-10 06:53:06,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-01-10 06:53:06,079 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 580 flow. Second operand 5 states and 220 transitions. [2025-01-10 06:53:06,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 142 transitions, 969 flow [2025-01-10 06:53:06,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 142 transitions, 937 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:06,082 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 607 flow [2025-01-10 06:53:06,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=607, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2025-01-10 06:53:06,083 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2025-01-10 06:53:06,083 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 607 flow [2025-01-10 06:53:06,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2025-01-10 06:53:06,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:06,084 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-01-10 06:53:06,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 06:53:06,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:06,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1391680116, now seen corresponding path program 1 times [2025-01-10 06:53:06,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:06,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999198621] [2025-01-10 06:53:06,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:06,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:06,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:06,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:06,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:06,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999198621] [2025-01-10 06:53:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999198621] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489294127] [2025-01-10 06:53:06,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:06,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:06,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:06,199 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) [2025-01-10 06:53:06,201 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 [2025-01-10 06:53:06,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:06,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:06,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:06,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:06,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 06:53:06,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:06,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489294127] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:06,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:06,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-01-10 06:53:06,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768304489] [2025-01-10 06:53:06,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:06,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 06:53:06,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:06,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 06:53:06,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:53:06,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2025-01-10 06:53:06,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 607 flow. Second operand has 24 states, 24 states have (on average 25.083333333333332) internal successors, (602), 24 states have internal predecessors, (602), 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) [2025-01-10 06:53:06,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:06,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2025-01-10 06:53:06,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:07,100 INFO L124 PetriNetUnfolderBase]: 3242/6274 cut-off events. [2025-01-10 06:53:07,101 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2025-01-10 06:53:07,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14003 conditions, 6274 events. 3242/6274 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 44920 event pairs, 2666 based on Foata normal form. 36/4770 useless extension candidates. Maximal degree in co-relation 13979. Up to 4784 conditions per place. [2025-01-10 06:53:07,129 INFO L140 encePairwiseOnDemand]: 75/87 looper letters, 48 selfloop transitions, 105 changer transitions 0/174 dead transitions. [2025-01-10 06:53:07,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 174 transitions, 1351 flow [2025-01-10 06:53:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 06:53:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 06:53:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 675 transitions. [2025-01-10 06:53:07,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35266457680250785 [2025-01-10 06:53:07,132 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 607 flow. Second operand 22 states and 675 transitions. [2025-01-10 06:53:07,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 174 transitions, 1351 flow [2025-01-10 06:53:07,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 174 transitions, 1336 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:07,138 INFO L231 Difference]: Finished difference. Result has 125 places, 174 transitions, 1314 flow [2025-01-10 06:53:07,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1314, PETRI_PLACES=125, PETRI_TRANSITIONS=174} [2025-01-10 06:53:07,138 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 41 predicate places. [2025-01-10 06:53:07,138 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 174 transitions, 1314 flow [2025-01-10 06:53:07,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 25.083333333333332) internal successors, (602), 24 states have internal predecessors, (602), 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) [2025-01-10 06:53:07,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:07,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:07,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 06:53:07,343 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 [2025-01-10 06:53:07,343 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:07,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:07,344 INFO L85 PathProgramCache]: Analyzing trace with hash -177373894, now seen corresponding path program 1 times [2025-01-10 06:53:07,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298505398] [2025-01-10 06:53:07,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:07,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:07,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:07,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:07,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:07,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298505398] [2025-01-10 06:53:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298505398] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018613414] [2025-01-10 06:53:07,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:07,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:07,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:07,840 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) [2025-01-10 06:53:07,841 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 [2025-01-10 06:53:07,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:07,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:07,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:07,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:07,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:53:07,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:07,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:07,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018613414] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:07,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:07,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2025-01-10 06:53:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721427649] [2025-01-10 06:53:07,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:07,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:07,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:07,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:07,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:53:07,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2025-01-10 06:53:07,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 174 transitions, 1314 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2025-01-10 06:53:07,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:07,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2025-01-10 06:53:07,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:08,600 INFO L124 PetriNetUnfolderBase]: 4099/7780 cut-off events. [2025-01-10 06:53:08,601 INFO L125 PetriNetUnfolderBase]: For 2395/2395 co-relation queries the response was YES. [2025-01-10 06:53:08,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17305 conditions, 7780 events. 4099/7780 cut-off events. For 2395/2395 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 57948 event pairs, 995 based on Foata normal form. 0/6100 useless extension candidates. Maximal degree in co-relation 17274. Up to 3573 conditions per place. [2025-01-10 06:53:08,640 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 191 selfloop transitions, 7 changer transitions 0/220 dead transitions. [2025-01-10 06:53:08,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 220 transitions, 1841 flow [2025-01-10 06:53:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2025-01-10 06:53:08,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2025-01-10 06:53:08,642 INFO L175 Difference]: Start difference. First operand has 125 places, 174 transitions, 1314 flow. Second operand 5 states and 237 transitions. [2025-01-10 06:53:08,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 220 transitions, 1841 flow [2025-01-10 06:53:08,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 220 transitions, 1542 flow, removed 67 selfloop flow, removed 10 redundant places. [2025-01-10 06:53:08,651 INFO L231 Difference]: Finished difference. Result has 121 places, 178 transitions, 1060 flow [2025-01-10 06:53:08,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1060, PETRI_PLACES=121, PETRI_TRANSITIONS=178} [2025-01-10 06:53:08,652 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2025-01-10 06:53:08,652 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 178 transitions, 1060 flow [2025-01-10 06:53:08,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2025-01-10 06:53:08,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:08,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:08,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:08,856 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 [2025-01-10 06:53:08,856 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:08,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1524749307, now seen corresponding path program 1 times [2025-01-10 06:53:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:08,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971893305] [2025-01-10 06:53:08,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:08,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:08,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:08,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:08,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971893305] [2025-01-10 06:53:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971893305] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752582552] [2025-01-10 06:53:09,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:09,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:09,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:09,210 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) [2025-01-10 06:53:09,216 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 [2025-01-10 06:53:09,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:09,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:09,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:09,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:09,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 06:53:09,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:09,329 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 [2025-01-10 06:53:09,360 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 [2025-01-10 06:53:09,519 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 06:53:09,519 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 [2025-01-10 06:53:09,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-01-10 06:53:09,765 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:53:09,765 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 [2025-01-10 06:53:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:09,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:10,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:10,090 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 26 treesize of output 27 [2025-01-10 06:53:10,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:10,101 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 41 treesize of output 33 [2025-01-10 06:53:10,108 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 13 treesize of output 7 [2025-01-10 06:53:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752582552] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:10,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:10,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2025-01-10 06:53:10,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373503201] [2025-01-10 06:53:10,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:10,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 06:53:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:10,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 06:53:10,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=362, Unknown=5, NotChecked=0, Total=420 [2025-01-10 06:53:10,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 87 [2025-01-10 06:53:10,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 178 transitions, 1060 flow. Second operand has 21 states, 21 states have (on average 18.571428571428573) internal successors, (390), 21 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) [2025-01-10 06:53:10,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:10,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 87 [2025-01-10 06:53:10,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:11,519 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((~q1_front~0 Int)) (or (< (select (select |c_#memory_int#1| c_~q1~0.base) (+ c_~q1~0.offset (* ~q1_front~0 4))) 2147483649) (< ~q1_front~0 0) (< c_~n1~0 (+ ~q1_front~0 1)))) (forall ((~q1_front~0 Int) (v_ArrVal_175 (Array Int Int))) (or (< ~q1_front~0 0) (< c_~n1~0 (+ ~q1_front~0 1)) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_175) c_~q1~0.base) (+ c_~q1~0.offset (* ~q1_front~0 4))) 2147483649)))) is different from false [2025-01-10 06:53:15,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2025-01-10 06:53:19,975 INFO L124 PetriNetUnfolderBase]: 18739/33046 cut-off events. [2025-01-10 06:53:19,975 INFO L125 PetriNetUnfolderBase]: For 14384/14403 co-relation queries the response was YES. [2025-01-10 06:53:20,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74025 conditions, 33046 events. 18739/33046 cut-off events. For 14384/14403 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 285500 event pairs, 8286 based on Foata normal form. 702/26328 useless extension candidates. Maximal degree in co-relation 73993. Up to 5896 conditions per place. [2025-01-10 06:53:20,212 INFO L140 encePairwiseOnDemand]: 69/87 looper letters, 322 selfloop transitions, 264 changer transitions 29/628 dead transitions. [2025-01-10 06:53:20,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 628 transitions, 4572 flow [2025-01-10 06:53:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-10 06:53:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-01-10 06:53:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 950 transitions. [2025-01-10 06:53:20,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28735632183908044 [2025-01-10 06:53:20,219 INFO L175 Difference]: Start difference. First operand has 121 places, 178 transitions, 1060 flow. Second operand 38 states and 950 transitions. [2025-01-10 06:53:20,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 628 transitions, 4572 flow [2025-01-10 06:53:20,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 628 transitions, 4559 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:20,263 INFO L231 Difference]: Finished difference. Result has 174 places, 356 transitions, 3213 flow [2025-01-10 06:53:20,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3213, PETRI_PLACES=174, PETRI_TRANSITIONS=356} [2025-01-10 06:53:20,267 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 90 predicate places. [2025-01-10 06:53:20,267 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 356 transitions, 3213 flow [2025-01-10 06:53:20,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.571428571428573) internal successors, (390), 21 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) [2025-01-10 06:53:20,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:20,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:20,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 06:53:20,468 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 [2025-01-10 06:53:20,468 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:20,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1524749309, now seen corresponding path program 1 times [2025-01-10 06:53:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:20,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028815250] [2025-01-10 06:53:20,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:20,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:20,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:20,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:20,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028815250] [2025-01-10 06:53:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028815250] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053810442] [2025-01-10 06:53:20,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:20,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:20,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:20,622 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) [2025-01-10 06:53:20,623 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 [2025-01-10 06:53:20,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:20,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:20,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:20,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:20,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:20,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:20,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:20,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053810442] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:20,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:20,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-01-10 06:53:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938582645] [2025-01-10 06:53:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:20,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:20,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:20,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:20,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:20,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:53:20,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 356 transitions, 3213 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:20,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:20,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:53:20,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:22,690 INFO L124 PetriNetUnfolderBase]: 7824/15636 cut-off events. [2025-01-10 06:53:22,691 INFO L125 PetriNetUnfolderBase]: For 20296/20528 co-relation queries the response was YES. [2025-01-10 06:53:22,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39422 conditions, 15636 events. 7824/15636 cut-off events. For 20296/20528 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 138305 event pairs, 6669 based on Foata normal form. 485/13572 useless extension candidates. Maximal degree in co-relation 39372. Up to 11937 conditions per place. [2025-01-10 06:53:22,800 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 326 selfloop transitions, 1 changer transitions 0/353 dead transitions. [2025-01-10 06:53:22,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 353 transitions, 3849 flow [2025-01-10 06:53:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2025-01-10 06:53:22,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5095785440613027 [2025-01-10 06:53:22,802 INFO L175 Difference]: Start difference. First operand has 174 places, 356 transitions, 3213 flow. Second operand 3 states and 133 transitions. [2025-01-10 06:53:22,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 353 transitions, 3849 flow [2025-01-10 06:53:22,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 353 transitions, 3777 flow, removed 21 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:22,837 INFO L231 Difference]: Finished difference. Result has 171 places, 353 transitions, 3125 flow [2025-01-10 06:53:22,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3125, PETRI_PLACES=171, PETRI_TRANSITIONS=353} [2025-01-10 06:53:22,838 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 87 predicate places. [2025-01-10 06:53:22,838 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 353 transitions, 3125 flow [2025-01-10 06:53:22,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:22,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:22,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:22,848 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 [2025-01-10 06:53:23,042 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 [2025-01-10 06:53:23,042 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:23,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -145974180, now seen corresponding path program 1 times [2025-01-10 06:53:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927932318] [2025-01-10 06:53:23,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:23,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:23,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:23,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:23,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:23,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927932318] [2025-01-10 06:53:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927932318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946210309] [2025-01-10 06:53:23,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:23,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:23,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:23,401 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) [2025-01-10 06:53:23,403 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 [2025-01-10 06:53:23,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 06:53:23,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 06:53:23,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:23,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:23,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-10 06:53:23,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:23,501 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 [2025-01-10 06:53:23,526 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 [2025-01-10 06:53:23,586 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 06:53:23,586 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 [2025-01-10 06:53:23,608 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 [2025-01-10 06:53:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:23,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946210309] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:53:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2025-01-10 06:53:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290061310] [2025-01-10 06:53:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:23,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:23,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:23,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2025-01-10 06:53:23,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2025-01-10 06:53:23,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 353 transitions, 3125 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2025-01-10 06:53:23,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:23,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2025-01-10 06:53:23,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:25,566 INFO L124 PetriNetUnfolderBase]: 8775/16467 cut-off events. [2025-01-10 06:53:25,566 INFO L125 PetriNetUnfolderBase]: For 13985/13985 co-relation queries the response was YES. [2025-01-10 06:53:25,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42373 conditions, 16467 events. 8775/16467 cut-off events. For 13985/13985 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 137000 event pairs, 3432 based on Foata normal form. 18/13946 useless extension candidates. Maximal degree in co-relation 42322. Up to 9262 conditions per place. [2025-01-10 06:53:25,686 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 334 selfloop transitions, 31 changer transitions 0/389 dead transitions. [2025-01-10 06:53:25,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 389 transitions, 3970 flow [2025-01-10 06:53:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:53:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:53:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2025-01-10 06:53:25,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264367816091954 [2025-01-10 06:53:25,688 INFO L175 Difference]: Start difference. First operand has 171 places, 353 transitions, 3125 flow. Second operand 5 states and 229 transitions. [2025-01-10 06:53:25,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 389 transitions, 3970 flow [2025-01-10 06:53:25,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 389 transitions, 3969 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:25,766 INFO L231 Difference]: Finished difference. Result has 176 places, 355 transitions, 3259 flow [2025-01-10 06:53:25,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3259, PETRI_PLACES=176, PETRI_TRANSITIONS=355} [2025-01-10 06:53:25,767 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 92 predicate places. [2025-01-10 06:53:25,767 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 355 transitions, 3259 flow [2025-01-10 06:53:25,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2025-01-10 06:53:25,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:25,767 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] [2025-01-10 06:53:25,773 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 [2025-01-10 06:53:25,971 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 [2025-01-10 06:53:25,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:25,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash 22589393, now seen corresponding path program 1 times [2025-01-10 06:53:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041675423] [2025-01-10 06:53:25,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:25,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:25,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:25,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:25,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041675423] [2025-01-10 06:53:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041675423] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:26,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631633681] [2025-01-10 06:53:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:26,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:26,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:26,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:26,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:26,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 87 [2025-01-10 06:53:26,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 355 transitions, 3259 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:26,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:26,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 87 [2025-01-10 06:53:26,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:28,407 INFO L124 PetriNetUnfolderBase]: 12516/20907 cut-off events. [2025-01-10 06:53:28,408 INFO L125 PetriNetUnfolderBase]: For 15764/15764 co-relation queries the response was YES. [2025-01-10 06:53:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56979 conditions, 20907 events. 12516/20907 cut-off events. For 15764/15764 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 159580 event pairs, 4402 based on Foata normal form. 564/18046 useless extension candidates. Maximal degree in co-relation 56925. Up to 14708 conditions per place. [2025-01-10 06:53:28,539 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 357 selfloop transitions, 8 changer transitions 0/387 dead transitions. [2025-01-10 06:53:28,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 387 transitions, 4102 flow [2025-01-10 06:53:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-01-10 06:53:28,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-01-10 06:53:28,545 INFO L175 Difference]: Start difference. First operand has 176 places, 355 transitions, 3259 flow. Second operand 4 states and 186 transitions. [2025-01-10 06:53:28,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 387 transitions, 4102 flow [2025-01-10 06:53:28,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 387 transitions, 4081 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:28,638 INFO L231 Difference]: Finished difference. Result has 179 places, 356 transitions, 3270 flow [2025-01-10 06:53:28,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3270, PETRI_PLACES=179, PETRI_TRANSITIONS=356} [2025-01-10 06:53:28,639 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 95 predicate places. [2025-01-10 06:53:28,639 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 356 transitions, 3270 flow [2025-01-10 06:53:28,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:28,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:28,639 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] [2025-01-10 06:53:28,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-10 06:53:28,639 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:28,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1342416831, now seen corresponding path program 1 times [2025-01-10 06:53:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990477056] [2025-01-10 06:53:28,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:28,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:28,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:53:28,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:53:28,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:28,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990477056] [2025-01-10 06:53:29,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990477056] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863038037] [2025-01-10 06:53:29,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:29,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:29,052 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) [2025-01-10 06:53:29,054 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 [2025-01-10 06:53:29,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:53:29,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:53:29,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:29,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:29,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-10 06:53:29,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:29,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 06:53:29,179 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 [2025-01-10 06:53:29,306 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 06:53:29,306 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 [2025-01-10 06:53:29,336 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 [2025-01-10 06:53:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:29,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:34,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:34,202 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 54 treesize of output 42 [2025-01-10 06:53:34,212 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:53:34,213 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 62 treesize of output 49 [2025-01-10 06:53:34,226 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-10 06:53:34,226 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 38 treesize of output 26 [2025-01-10 06:53:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863038037] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:34,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2025-01-10 06:53:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697209327] [2025-01-10 06:53:34,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:34,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-10 06:53:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:34,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-10 06:53:34,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=627, Unknown=7, NotChecked=0, Total=756 [2025-01-10 06:53:38,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-01-10 06:53:42,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-01-10 06:53:42,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 87 [2025-01-10 06:53:42,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 356 transitions, 3270 flow. Second operand has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 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) [2025-01-10 06:53:42,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:42,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 87 [2025-01-10 06:53:42,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:49,525 INFO L124 PetriNetUnfolderBase]: 24056/40461 cut-off events. [2025-01-10 06:53:49,526 INFO L125 PetriNetUnfolderBase]: For 35177/35177 co-relation queries the response was YES. [2025-01-10 06:53:49,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104711 conditions, 40461 events. 24056/40461 cut-off events. For 35177/35177 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 329220 event pairs, 7300 based on Foata normal form. 998/35821 useless extension candidates. Maximal degree in co-relation 104656. Up to 15152 conditions per place. [2025-01-10 06:53:49,981 INFO L140 encePairwiseOnDemand]: 69/87 looper letters, 423 selfloop transitions, 218 changer transitions 10/664 dead transitions. [2025-01-10 06:53:49,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 664 transitions, 5991 flow [2025-01-10 06:53:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-10 06:53:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-01-10 06:53:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 921 transitions. [2025-01-10 06:53:49,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3024630541871921 [2025-01-10 06:53:49,983 INFO L175 Difference]: Start difference. First operand has 179 places, 356 transitions, 3270 flow. Second operand 35 states and 921 transitions. [2025-01-10 06:53:49,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 664 transitions, 5991 flow [2025-01-10 06:53:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 664 transitions, 5968 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:50,249 INFO L231 Difference]: Finished difference. Result has 222 places, 403 transitions, 4275 flow [2025-01-10 06:53:50,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4275, PETRI_PLACES=222, PETRI_TRANSITIONS=403} [2025-01-10 06:53:50,252 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 138 predicate places. [2025-01-10 06:53:50,252 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 403 transitions, 4275 flow [2025-01-10 06:53:50,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 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) [2025-01-10 06:53:50,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:50,252 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] [2025-01-10 06:53:50,260 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 [2025-01-10 06:53:50,457 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,SelfDestructingSolverStorable16 [2025-01-10 06:53:50,457 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:50,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1779165805, now seen corresponding path program 2 times [2025-01-10 06:53:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:50,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138448010] [2025-01-10 06:53:50,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:50,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:50,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 06:53:50,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 21 statements. [2025-01-10 06:53:50,525 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:50,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:50,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:50,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138448010] [2025-01-10 06:53:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138448010] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:50,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:53:50,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315067438] [2025-01-10 06:53:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:50,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:50,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:50,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:53:50,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 87 [2025-01-10 06:53:50,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 403 transitions, 4275 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:50,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:50,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 87 [2025-01-10 06:53:50,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:54,274 INFO L124 PetriNetUnfolderBase]: 17247/30884 cut-off events. [2025-01-10 06:53:54,275 INFO L125 PetriNetUnfolderBase]: For 66218/66234 co-relation queries the response was YES. [2025-01-10 06:53:54,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91924 conditions, 30884 events. 17247/30884 cut-off events. For 66218/66234 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 266596 event pairs, 9888 based on Foata normal form. 359/26788 useless extension candidates. Maximal degree in co-relation 91858. Up to 23078 conditions per place. [2025-01-10 06:53:54,600 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 405 selfloop transitions, 17 changer transitions 1/445 dead transitions. [2025-01-10 06:53:54,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 445 transitions, 5311 flow [2025-01-10 06:53:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2025-01-10 06:53:54,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2025-01-10 06:53:54,601 INFO L175 Difference]: Start difference. First operand has 222 places, 403 transitions, 4275 flow. Second operand 6 states and 249 transitions. [2025-01-10 06:53:54,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 445 transitions, 5311 flow [2025-01-10 06:53:55,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 445 transitions, 5017 flow, removed 46 selfloop flow, removed 18 redundant places. [2025-01-10 06:53:55,016 INFO L231 Difference]: Finished difference. Result has 211 places, 409 transitions, 4103 flow [2025-01-10 06:53:55,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4103, PETRI_PLACES=211, PETRI_TRANSITIONS=409} [2025-01-10 06:53:55,017 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 127 predicate places. [2025-01-10 06:53:55,017 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 409 transitions, 4103 flow [2025-01-10 06:53:55,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:55,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:55,017 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] [2025-01-10 06:53:55,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-10 06:53:55,017 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:53:55,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -770220593, now seen corresponding path program 1 times [2025-01-10 06:53:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370677687] [2025-01-10 06:53:55,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:55,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:53:55,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:53:55,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:55,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:55,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370677687] [2025-01-10 06:53:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370677687] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791438448] [2025-01-10 06:53:55,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:55,453 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) [2025-01-10 06:53:55,454 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 [2025-01-10 06:53:55,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:53:55,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:53:55,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:55,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:55,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 06:53:55,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:55,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:55,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791438448] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:55,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:55,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2025-01-10 06:53:55,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596389759] [2025-01-10 06:53:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:55,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:55,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:55,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-01-10 06:53:55,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-01-10 06:53:55,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 409 transitions, 4103 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:55,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:55,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-01-10 06:53:55,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:59,510 INFO L124 PetriNetUnfolderBase]: 17186/30867 cut-off events. [2025-01-10 06:53:59,511 INFO L125 PetriNetUnfolderBase]: For 77568/78078 co-relation queries the response was YES. [2025-01-10 06:53:59,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90473 conditions, 30867 events. 17186/30867 cut-off events. For 77568/78078 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 263566 event pairs, 10231 based on Foata normal form. 363/26805 useless extension candidates. Maximal degree in co-relation 90412. Up to 24142 conditions per place. [2025-01-10 06:53:59,730 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 404 selfloop transitions, 20 changer transitions 0/448 dead transitions. [2025-01-10 06:53:59,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 448 transitions, 5093 flow [2025-01-10 06:53:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2025-01-10 06:53:59,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4885057471264368 [2025-01-10 06:53:59,731 INFO L175 Difference]: Start difference. First operand has 211 places, 409 transitions, 4103 flow. Second operand 6 states and 255 transitions. [2025-01-10 06:53:59,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 448 transitions, 5093 flow [2025-01-10 06:54:00,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 448 transitions, 5083 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:00,025 INFO L231 Difference]: Finished difference. Result has 216 places, 411 transitions, 4161 flow [2025-01-10 06:54:00,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4093, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4161, PETRI_PLACES=216, PETRI_TRANSITIONS=411} [2025-01-10 06:54:00,026 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 132 predicate places. [2025-01-10 06:54:00,028 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 411 transitions, 4161 flow [2025-01-10 06:54:00,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:00,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:00,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:00,035 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 [2025-01-10 06:54:00,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:00,233 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:54:00,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1868356144, now seen corresponding path program 1 times [2025-01-10 06:54:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831466339] [2025-01-10 06:54:00,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:00,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:54:00,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:54:00,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:00,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:54:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831466339] [2025-01-10 06:54:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831466339] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:54:00,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857106107] [2025-01-10 06:54:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:00,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:00,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:00,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:00,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2025-01-10 06:54:00,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 411 transitions, 4161 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2025-01-10 06:54:00,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:00,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2025-01-10 06:54:00,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:03,785 INFO L124 PetriNetUnfolderBase]: 14973/28866 cut-off events. [2025-01-10 06:54:03,786 INFO L125 PetriNetUnfolderBase]: For 79608/80179 co-relation queries the response was YES. [2025-01-10 06:54:04,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89637 conditions, 28866 events. 14973/28866 cut-off events. For 79608/80179 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 260868 event pairs, 12753 based on Foata normal form. 398/25676 useless extension candidates. Maximal degree in co-relation 89574. Up to 20184 conditions per place. [2025-01-10 06:54:04,187 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 390 selfloop transitions, 44 changer transitions 15/477 dead transitions. [2025-01-10 06:54:04,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 477 transitions, 5753 flow [2025-01-10 06:54:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2025-01-10 06:54:04,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2025-01-10 06:54:04,188 INFO L175 Difference]: Start difference. First operand has 216 places, 411 transitions, 4161 flow. Second operand 4 states and 189 transitions. [2025-01-10 06:54:04,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 477 transitions, 5753 flow [2025-01-10 06:54:04,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 477 transitions, 5698 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:54:04,639 INFO L231 Difference]: Finished difference. Result has 217 places, 411 transitions, 4230 flow [2025-01-10 06:54:04,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4230, PETRI_PLACES=217, PETRI_TRANSITIONS=411} [2025-01-10 06:54:04,640 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 133 predicate places. [2025-01-10 06:54:04,640 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 411 transitions, 4230 flow [2025-01-10 06:54:04,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2025-01-10 06:54:04,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:04,641 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:04,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-10 06:54:04,641 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-01-10 06:54:04,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -868935341, now seen corresponding path program 2 times [2025-01-10 06:54:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154508417] [2025-01-10 06:54:04,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:04,650 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-01-10 06:54:04,664 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 25 statements. [2025-01-10 06:54:04,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:54:04,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 06:54:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:04,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154508417] [2025-01-10 06:54:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154508417] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:54:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438975966] [2025-01-10 06:54:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:04,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:54:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:04,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:54:04,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:54:04,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2025-01-10 06:54:04,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 411 transitions, 4230 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2025-01-10 06:54:04,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:04,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2025-01-10 06:54:04,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand