./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longest-1.i -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 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:30:17,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:30:17,531 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:30:17,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:30:17,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:30:17,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:30:17,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:30:17,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:30:17,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:30:17,570 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:30:17,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:30:17,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:30:17,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:30:17,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:30:17,571 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:30:17,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:30:17,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:30:17,572 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:30:17,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:30:17,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:30:17,573 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:30:17,574 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:30:17,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:30:17,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:30:17,574 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 -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2025-02-06 18:30:17,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:30:17,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:30:17,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:30:17,837 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:30:17,837 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:30:17,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longest-1.i [2025-02-06 18:30:19,185 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e38ff249/34cb45c451464c02b3b5d7140f974c82/FLAGd7856362d [2025-02-06 18:30:19,556 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:30:19,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-1.i [2025-02-06 18:30:19,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e38ff249/34cb45c451464c02b3b5d7140f974c82/FLAGd7856362d [2025-02-06 18:30:19,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e38ff249/34cb45c451464c02b3b5d7140f974c82 [2025-02-06 18:30:19,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:30:19,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:30:19,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:30:19,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:30:19,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:30:19,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:30:19" (1/1) ... [2025-02-06 18:30:19,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e25f51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:19, skipping insertion in model container [2025-02-06 18:30:19,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:30:19" (1/1) ... [2025-02-06 18:30:19,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:30:20,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:30:20,085 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:30:20,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:30:20,243 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:30:20,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20 WrapperNode [2025-02-06 18:30:20,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:30:20,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:30:20,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:30:20,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:30:20,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,343 INFO L138 Inliner]: procedures = 277, calls = 832, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 958 [2025-02-06 18:30:20,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:30:20,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:30:20,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:30:20,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:30:20,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,401 INFO L175 MemorySlicer]: Split 809 memory accesses to 3 slices as follows [2, 5, 802]. 99 percent of accesses are in the largest equivalence class. The 807 initializations are split as follows [2, 5, 800]. The 1 writes are split as follows [0, 0, 1]. [2025-02-06 18:30:20,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:30:20,449 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:30:20,449 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:30:20,450 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:30:20,452 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (1/1) ... [2025-02-06 18:30:20,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:30:20,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:20,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:30:20,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:30:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-06 18:30:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-06 18:30:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-06 18:30:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-06 18:30:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:30:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:30:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:30:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:30:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:30:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:30:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:30:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:30:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:30:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:30:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:30:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:30:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:30:20,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:30:20,514 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:30:20,644 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:30:20,646 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:30:21,813 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2025-02-06 18:30:21,814 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem38#1; [2025-02-06 18:30:21,814 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret37#1; [2025-02-06 18:30:21,815 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:30:21,815 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:30:32,970 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:30:32,970 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:30:32,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:30:32 BoogieIcfgContainer [2025-02-06 18:30:32,971 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:30:32,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:30:32,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:30:32,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:30:32,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:30:19" (1/3) ... [2025-02-06 18:30:32,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cc9e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:30:32, skipping insertion in model container [2025-02-06 18:30:32,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:30:20" (2/3) ... [2025-02-06 18:30:32,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cc9e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:30:32, skipping insertion in model container [2025-02-06 18:30:32,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:30:32" (3/3) ... [2025-02-06 18:30:32,980 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2025-02-06 18:30:32,993 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:30:32,995 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longest-1.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-06 18:30:32,995 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:30:33,081 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:30:33,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-02-06 18:30:33,181 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-02-06 18:30:33,183 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:30:33,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-02-06 18:30:33,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-02-06 18:30:33,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-02-06 18:30:33,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:30:33,209 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;@3ad2b622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:30:33,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 18:30:33,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:30:33,249 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-02-06 18:30:33,249 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:30:33,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:33,250 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:33,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:33,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 372322536, now seen corresponding path program 1 times [2025-02-06 18:30:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786021498] [2025-02-06 18:30:33,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:33,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:33,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:30:33,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:30:33,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:33,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:34,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786021498] [2025-02-06 18:30:34,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786021498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:34,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:30:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540555596] [2025-02-06 18:30:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:34,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:30:34,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:34,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:30:34,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:30:34,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-02-06 18:30:34,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:34,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:34,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-02-06 18:30:34,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:34,609 INFO L124 PetriNetUnfolderBase]: 713/1403 cut-off events. [2025-02-06 18:30:34,609 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-02-06 18:30:34,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1403 events. 713/1403 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7654 event pairs, 148 based on Foata normal form. 40/1281 useless extension candidates. Maximal degree in co-relation 2472. Up to 781 conditions per place. [2025-02-06 18:30:34,622 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2025-02-06 18:30:34,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2025-02-06 18:30:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:30:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:30:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2025-02-06 18:30:34,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-02-06 18:30:34,635 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2025-02-06 18:30:34,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2025-02-06 18:30:34,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:30:34,648 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2025-02-06 18:30:34,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2025-02-06 18:30:34,654 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-02-06 18:30:34,654 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2025-02-06 18:30:34,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:34,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:34,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:34,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:30:34,655 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:34,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1298664515, now seen corresponding path program 1 times [2025-02-06 18:30:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558251472] [2025-02-06 18:30:34,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:34,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:30:34,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:30:34,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:34,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558251472] [2025-02-06 18:30:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558251472] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:35,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:35,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:30:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152447465] [2025-02-06 18:30:35,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:35,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:30:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:35,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:30:35,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:30:35,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-02-06 18:30:35,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:35,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:35,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-02-06 18:30:35,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:35,474 INFO L124 PetriNetUnfolderBase]: 581/1195 cut-off events. [2025-02-06 18:30:35,474 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2025-02-06 18:30:35,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1195 events. 581/1195 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6394 event pairs, 160 based on Foata normal form. 0/1085 useless extension candidates. Maximal degree in co-relation 2295. Up to 608 conditions per place. [2025-02-06 18:30:35,488 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 61 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2025-02-06 18:30:35,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 350 flow [2025-02-06 18:30:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:30:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:30:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2025-02-06 18:30:35,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625 [2025-02-06 18:30:35,492 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 159 transitions. [2025-02-06 18:30:35,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 350 flow [2025-02-06 18:30:35,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 346 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 18:30:35,497 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 160 flow [2025-02-06 18:30:35,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2025-02-06 18:30:35,498 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-02-06 18:30:35,498 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 160 flow [2025-02-06 18:30:35,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:35,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:35,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:35,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:30:35,498 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:35,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1603864516, now seen corresponding path program 1 times [2025-02-06 18:30:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453558664] [2025-02-06 18:30:35,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:35,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:30:35,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:30:35,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:35,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453558664] [2025-02-06 18:30:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453558664] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:35,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:30:35,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378214021] [2025-02-06 18:30:35,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:35,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:30:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:35,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:30:35,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:30:35,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-02-06 18:30:35,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:35,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:35,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-02-06 18:30:35,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:36,091 INFO L124 PetriNetUnfolderBase]: 1096/2189 cut-off events. [2025-02-06 18:30:36,091 INFO L125 PetriNetUnfolderBase]: For 631/631 co-relation queries the response was YES. [2025-02-06 18:30:36,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 2189 events. 1096/2189 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12588 event pairs, 498 based on Foata normal form. 68/2099 useless extension candidates. Maximal degree in co-relation 3900. Up to 1101 conditions per place. [2025-02-06 18:30:36,104 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 76 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2025-02-06 18:30:36,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 468 flow [2025-02-06 18:30:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:30:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:30:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-02-06 18:30:36,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-02-06 18:30:36,106 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 160 flow. Second operand 4 states and 132 transitions. [2025-02-06 18:30:36,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 468 flow [2025-02-06 18:30:36,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:30:36,111 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 184 flow [2025-02-06 18:30:36,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2025-02-06 18:30:36,113 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-06 18:30:36,113 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 184 flow [2025-02-06 18:30:36,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:36,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:36,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:36,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:30:36,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:36,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash 82831053, now seen corresponding path program 1 times [2025-02-06 18:30:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347698435] [2025-02-06 18:30:36,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:36,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:30:36,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:30:36,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:36,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:36,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:36,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347698435] [2025-02-06 18:30:36,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347698435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:36,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:36,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:30:36,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638638399] [2025-02-06 18:30:36,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:36,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:30:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:36,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:30:36,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:30:36,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-02-06 18:30:36,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:36,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:36,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-02-06 18:30:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:36,752 INFO L124 PetriNetUnfolderBase]: 1373/2587 cut-off events. [2025-02-06 18:30:36,752 INFO L125 PetriNetUnfolderBase]: For 1217/1261 co-relation queries the response was YES. [2025-02-06 18:30:36,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 2587 events. 1373/2587 cut-off events. For 1217/1261 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 14707 event pairs, 528 based on Foata normal form. 76/2558 useless extension candidates. Maximal degree in co-relation 4864. Up to 1395 conditions per place. [2025-02-06 18:30:36,773 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 77 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2025-02-06 18:30:36,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 502 flow [2025-02-06 18:30:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:30:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:30:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-02-06 18:30:36,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2025-02-06 18:30:36,775 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 184 flow. Second operand 4 states and 133 transitions. [2025-02-06 18:30:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 502 flow [2025-02-06 18:30:36,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:30:36,781 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 206 flow [2025-02-06 18:30:36,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2025-02-06 18:30:36,782 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-02-06 18:30:36,782 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 206 flow [2025-02-06 18:30:36,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:36,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:36,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:36,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:30:36,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:36,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 78097268, now seen corresponding path program 1 times [2025-02-06 18:30:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37593768] [2025-02-06 18:30:36,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:36,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:30:36,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:30:36,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:36,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37593768] [2025-02-06 18:30:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37593768] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:37,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:37,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:30:37,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223503325] [2025-02-06 18:30:37,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:37,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:30:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:37,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:30:37,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:30:37,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-02-06 18:30:37,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:37,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:37,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-02-06 18:30:37,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:37,422 INFO L124 PetriNetUnfolderBase]: 675/1501 cut-off events. [2025-02-06 18:30:37,422 INFO L125 PetriNetUnfolderBase]: For 816/882 co-relation queries the response was YES. [2025-02-06 18:30:37,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1501 events. 675/1501 cut-off events. For 816/882 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8177 event pairs, 182 based on Foata normal form. 68/1524 useless extension candidates. Maximal degree in co-relation 3273. Up to 766 conditions per place. [2025-02-06 18:30:37,435 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2025-02-06 18:30:37,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 361 flow [2025-02-06 18:30:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:30:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:30:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-02-06 18:30:37,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 18:30:37,436 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 206 flow. Second operand 3 states and 96 transitions. [2025-02-06 18:30:37,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 361 flow [2025-02-06 18:30:37,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 351 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:37,443 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 192 flow [2025-02-06 18:30:37,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2025-02-06 18:30:37,443 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2025-02-06 18:30:37,443 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 192 flow [2025-02-06 18:30:37,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:37,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:37,444 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:37,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:30:37,444 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:37,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash 619384352, now seen corresponding path program 1 times [2025-02-06 18:30:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111576097] [2025-02-06 18:30:37,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:37,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:30:37,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:30:37,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:37,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:37,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:37,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111576097] [2025-02-06 18:30:37,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111576097] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:37,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697195956] [2025-02-06 18:30:37,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:37,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:37,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:37,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:30:37,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:30:38,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:30:38,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:38,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:38,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:30:38,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:38,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:30:38,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697195956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:38,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:30:38,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:30:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755679243] [2025-02-06 18:30:38,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:38,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:30:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:38,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:30:38,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:30:38,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-02-06 18:30:38,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:38,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:38,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-02-06 18:30:38,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:38,708 INFO L124 PetriNetUnfolderBase]: 1090/2325 cut-off events. [2025-02-06 18:30:38,708 INFO L125 PetriNetUnfolderBase]: For 1174/1288 co-relation queries the response was YES. [2025-02-06 18:30:38,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2325 events. 1090/2325 cut-off events. For 1174/1288 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13555 event pairs, 217 based on Foata normal form. 18/2269 useless extension candidates. Maximal degree in co-relation 3376. Up to 854 conditions per place. [2025-02-06 18:30:38,727 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 95 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2025-02-06 18:30:38,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 641 flow [2025-02-06 18:30:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:30:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:30:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2025-02-06 18:30:38,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-02-06 18:30:38,729 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 192 flow. Second operand 7 states and 200 transitions. [2025-02-06 18:30:38,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 641 flow [2025-02-06 18:30:38,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:30:38,735 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 245 flow [2025-02-06 18:30:38,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2025-02-06 18:30:38,736 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-02-06 18:30:38,736 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 245 flow [2025-02-06 18:30:38,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:38,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:38,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:38,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:30:38,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:38,941 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:38,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1633497791, now seen corresponding path program 1 times [2025-02-06 18:30:38,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:38,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832002039] [2025-02-06 18:30:38,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:38,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:38,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:30:39,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:30:39,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:39,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832002039] [2025-02-06 18:30:39,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832002039] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:39,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:39,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:30:39,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396526922] [2025-02-06 18:30:39,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:39,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:30:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:39,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:30:39,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:30:39,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:30:39,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2025-02-06 18:30:39,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:39,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:30:39,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:39,843 INFO L124 PetriNetUnfolderBase]: 1588/3247 cut-off events. [2025-02-06 18:30:39,843 INFO L125 PetriNetUnfolderBase]: For 2389/2601 co-relation queries the response was YES. [2025-02-06 18:30:39,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8417 conditions, 3247 events. 1588/3247 cut-off events. For 2389/2601 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 19818 event pairs, 277 based on Foata normal form. 26/3262 useless extension candidates. Maximal degree in co-relation 5460. Up to 1356 conditions per place. [2025-02-06 18:30:39,874 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 104 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2025-02-06 18:30:39,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 125 transitions, 731 flow [2025-02-06 18:30:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:30:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:30:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2025-02-06 18:30:39,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2025-02-06 18:30:39,876 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 245 flow. Second operand 7 states and 191 transitions. [2025-02-06 18:30:39,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 125 transitions, 731 flow [2025-02-06 18:30:39,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 125 transitions, 723 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:39,884 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 306 flow [2025-02-06 18:30:39,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2025-02-06 18:30:39,885 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2025-02-06 18:30:39,885 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 306 flow [2025-02-06 18:30:39,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2025-02-06 18:30:39,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:39,885 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:39,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:30:39,885 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:39,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash -914999079, now seen corresponding path program 1 times [2025-02-06 18:30:39,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:39,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190698815] [2025-02-06 18:30:39,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:39,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:39,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:30:39,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:30:39,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:39,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:40,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:40,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190698815] [2025-02-06 18:30:40,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190698815] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:40,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774835948] [2025-02-06 18:30:40,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:40,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:40,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:40,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:40,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:30:40,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:30:40,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:30:40,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:40,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:40,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:30:40,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:40,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:30:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774835948] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:40,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:30:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-06 18:30:40,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528894301] [2025-02-06 18:30:40,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:40,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:30:40,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:40,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:30:40,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:30:40,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-02-06 18:30:40,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:40,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:40,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-02-06 18:30:40,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:41,127 INFO L124 PetriNetUnfolderBase]: 1759/3423 cut-off events. [2025-02-06 18:30:41,127 INFO L125 PetriNetUnfolderBase]: For 3497/3703 co-relation queries the response was YES. [2025-02-06 18:30:41,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9320 conditions, 3423 events. 1759/3423 cut-off events. For 3497/3703 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20440 event pairs, 171 based on Foata normal form. 79/3422 useless extension candidates. Maximal degree in co-relation 7729. Up to 1704 conditions per place. [2025-02-06 18:30:41,151 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 82 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2025-02-06 18:30:41,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 712 flow [2025-02-06 18:30:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:30:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:30:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-02-06 18:30:41,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-06 18:30:41,153 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 306 flow. Second operand 4 states and 117 transitions. [2025-02-06 18:30:41,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 712 flow [2025-02-06 18:30:41,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 700 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:41,165 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 306 flow [2025-02-06 18:30:41,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2025-02-06 18:30:41,167 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2025-02-06 18:30:41,167 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 306 flow [2025-02-06 18:30:41,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:41,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:41,168 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:41,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:30:41,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:41,368 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:41,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2021047695, now seen corresponding path program 1 times [2025-02-06 18:30:41,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:41,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946505835] [2025-02-06 18:30:41,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:41,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:30:41,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:30:41,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:41,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:41,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:41,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946505835] [2025-02-06 18:30:41,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946505835] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:41,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310217134] [2025-02-06 18:30:41,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:41,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:41,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:41,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:30:41,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:30:41,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:30:41,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:41,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:41,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:30:41,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:41,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:30:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:41,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310217134] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:30:41,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:30:41,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:30:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287846874] [2025-02-06 18:30:41,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:30:41,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:30:41,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:41,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:30:41,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:30:41,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-02-06 18:30:41,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:41,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:41,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-02-06 18:30:41,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:42,720 INFO L124 PetriNetUnfolderBase]: 2389/5014 cut-off events. [2025-02-06 18:30:42,720 INFO L125 PetriNetUnfolderBase]: For 6514/6729 co-relation queries the response was YES. [2025-02-06 18:30:42,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14085 conditions, 5014 events. 2389/5014 cut-off events. For 6514/6729 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 31928 event pairs, 464 based on Foata normal form. 90/5075 useless extension candidates. Maximal degree in co-relation 12725. Up to 1332 conditions per place. [2025-02-06 18:30:42,762 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 165 selfloop transitions, 18 changer transitions 0/197 dead transitions. [2025-02-06 18:30:42,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 197 transitions, 1308 flow [2025-02-06 18:30:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:30:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:30:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 332 transitions. [2025-02-06 18:30:42,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6287878787878788 [2025-02-06 18:30:42,764 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 306 flow. Second operand 11 states and 332 transitions. [2025-02-06 18:30:42,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 197 transitions, 1308 flow [2025-02-06 18:30:42,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 197 transitions, 1210 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:30:42,777 INFO L231 Difference]: Finished difference. Result has 89 places, 72 transitions, 454 flow [2025-02-06 18:30:42,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=454, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2025-02-06 18:30:42,778 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2025-02-06 18:30:42,778 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 454 flow [2025-02-06 18:30:42,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:42,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:42,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:42,790 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 [2025-02-06 18:30:42,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:42,979 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:42,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash 901178022, now seen corresponding path program 1 times [2025-02-06 18:30:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:42,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304698404] [2025-02-06 18:30:42,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:42,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:30:43,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:30:43,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:43,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:43,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:43,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304698404] [2025-02-06 18:30:43,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304698404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:43,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:43,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:30:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93664456] [2025-02-06 18:30:43,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:43,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:30:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:43,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:30:43,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:30:43,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:30:43,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2025-02-06 18:30:43,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:43,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:30:43,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:43,752 INFO L124 PetriNetUnfolderBase]: 2730/5477 cut-off events. [2025-02-06 18:30:43,752 INFO L125 PetriNetUnfolderBase]: For 7579/7905 co-relation queries the response was YES. [2025-02-06 18:30:43,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15431 conditions, 5477 events. 2730/5477 cut-off events. For 7579/7905 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34111 event pairs, 608 based on Foata normal form. 39/5489 useless extension candidates. Maximal degree in co-relation 13229. Up to 3204 conditions per place. [2025-02-06 18:30:43,790 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 112 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2025-02-06 18:30:43,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 929 flow [2025-02-06 18:30:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:30:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:30:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-02-06 18:30:43,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-02-06 18:30:43,792 INFO L175 Difference]: Start difference. First operand has 89 places, 72 transitions, 454 flow. Second operand 7 states and 192 transitions. [2025-02-06 18:30:43,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 929 flow [2025-02-06 18:30:43,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 915 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:43,811 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 517 flow [2025-02-06 18:30:43,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2025-02-06 18:30:43,811 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2025-02-06 18:30:43,811 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 517 flow [2025-02-06 18:30:43,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2025-02-06 18:30:43,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:43,812 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:43,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:30:43,812 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:43,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1699801616, now seen corresponding path program 1 times [2025-02-06 18:30:43,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:43,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251530864] [2025-02-06 18:30:43,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:43,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:43,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:30:43,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:30:43,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:43,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:30:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251530864] [2025-02-06 18:30:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251530864] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:44,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:44,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:30:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891895781] [2025-02-06 18:30:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:44,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:30:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:44,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:30:44,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:30:44,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-02-06 18:30:44,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:44,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:44,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-02-06 18:30:44,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:44,565 INFO L124 PetriNetUnfolderBase]: 2817/5773 cut-off events. [2025-02-06 18:30:44,566 INFO L125 PetriNetUnfolderBase]: For 8921/9155 co-relation queries the response was YES. [2025-02-06 18:30:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16298 conditions, 5773 events. 2817/5773 cut-off events. For 8921/9155 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 37543 event pairs, 491 based on Foata normal form. 0/5772 useless extension candidates. Maximal degree in co-relation 14454. Up to 2770 conditions per place. [2025-02-06 18:30:44,604 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 117 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2025-02-06 18:30:44,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1257 flow [2025-02-06 18:30:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:30:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:30:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-02-06 18:30:44,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-06 18:30:44,605 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 517 flow. Second operand 4 states and 117 transitions. [2025-02-06 18:30:44,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1257 flow [2025-02-06 18:30:44,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1239 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:44,632 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 525 flow [2025-02-06 18:30:44,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2025-02-06 18:30:44,633 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-02-06 18:30:44,633 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 525 flow [2025-02-06 18:30:44,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:44,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:44,633 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:44,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:30:44,633 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:44,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1066955627, now seen corresponding path program 1 times [2025-02-06 18:30:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205935070] [2025-02-06 18:30:44,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:44,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:44,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:30:44,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:30:44,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:44,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:44,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:44,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205935070] [2025-02-06 18:30:44,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205935070] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:44,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462055209] [2025-02-06 18:30:44,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:44,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:44,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:44,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:44,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:30:44,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:30:45,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:30:45,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:45,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:45,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:30:45,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:45,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:30:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462055209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:45,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:30:45,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-06 18:30:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035405138] [2025-02-06 18:30:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:45,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:30:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:45,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:30:45,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:30:45,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-02-06 18:30:45,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:45,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:45,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-02-06 18:30:45,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:45,694 INFO L124 PetriNetUnfolderBase]: 3216/6072 cut-off events. [2025-02-06 18:30:45,694 INFO L125 PetriNetUnfolderBase]: For 11601/11631 co-relation queries the response was YES. [2025-02-06 18:30:45,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18562 conditions, 6072 events. 3216/6072 cut-off events. For 11601/11631 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 37550 event pairs, 473 based on Foata normal form. 178/6066 useless extension candidates. Maximal degree in co-relation 17684. Up to 3559 conditions per place. [2025-02-06 18:30:45,729 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 95 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2025-02-06 18:30:45,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 115 transitions, 958 flow [2025-02-06 18:30:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:30:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:30:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-02-06 18:30:45,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-06 18:30:45,730 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 525 flow. Second operand 4 states and 117 transitions. [2025-02-06 18:30:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 115 transitions, 958 flow [2025-02-06 18:30:45,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 115 transitions, 936 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:45,756 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 523 flow [2025-02-06 18:30:45,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2025-02-06 18:30:45,757 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-02-06 18:30:45,757 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 523 flow [2025-02-06 18:30:45,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:45,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:45,758 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:30:45,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:30:45,958 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,SelfDestructingSolverStorable11 [2025-02-06 18:30:45,958 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:45,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1284115904, now seen corresponding path program 1 times [2025-02-06 18:30:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267150332] [2025-02-06 18:30:45,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:45,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:45,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:30:45,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:30:45,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:45,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:30:46,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:46,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267150332] [2025-02-06 18:30:46,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267150332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:46,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:30:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957059277] [2025-02-06 18:30:46,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:46,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:30:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:46,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:30:46,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:30:46,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-02-06 18:30:46,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:46,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:46,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-02-06 18:30:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:46,481 INFO L124 PetriNetUnfolderBase]: 2959/5688 cut-off events. [2025-02-06 18:30:46,481 INFO L125 PetriNetUnfolderBase]: For 10581/10626 co-relation queries the response was YES. [2025-02-06 18:30:46,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17209 conditions, 5688 events. 2959/5688 cut-off events. For 10581/10626 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 34841 event pairs, 686 based on Foata normal form. 178/5862 useless extension candidates. Maximal degree in co-relation 14579. Up to 2721 conditions per place. [2025-02-06 18:30:46,504 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2025-02-06 18:30:46,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1085 flow [2025-02-06 18:30:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:30:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:30:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-02-06 18:30:46,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-02-06 18:30:46,505 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 523 flow. Second operand 4 states and 119 transitions. [2025-02-06 18:30:46,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1085 flow [2025-02-06 18:30:46,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 1075 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:30:46,529 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 529 flow [2025-02-06 18:30:46,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2025-02-06 18:30:46,529 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-02-06 18:30:46,529 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 529 flow [2025-02-06 18:30:46,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:46,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:46,530 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:46,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:30:46,530 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:46,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash 114784173, now seen corresponding path program 1 times [2025-02-06 18:30:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:46,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481364515] [2025-02-06 18:30:46,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:46,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:46,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:30:46,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:30:46,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:46,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:46,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:46,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481364515] [2025-02-06 18:30:46,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481364515] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:46,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000332460] [2025-02-06 18:30:46,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:46,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:46,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:46,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:30:46,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:30:47,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:30:47,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:47,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:47,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:30:47,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:47,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:30:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000332460] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:30:47,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-02-06 18:30:47,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565883648] [2025-02-06 18:30:47,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:47,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:30:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:47,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:30:47,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:30:47,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:30:47,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 529 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:47,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:47,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:30:47,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:47,913 INFO L124 PetriNetUnfolderBase]: 3174/6152 cut-off events. [2025-02-06 18:30:47,913 INFO L125 PetriNetUnfolderBase]: For 12614/12614 co-relation queries the response was YES. [2025-02-06 18:30:47,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19212 conditions, 6152 events. 3174/6152 cut-off events. For 12614/12614 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 38041 event pairs, 560 based on Foata normal form. 87/6206 useless extension candidates. Maximal degree in co-relation 16375. Up to 2456 conditions per place. [2025-02-06 18:30:47,939 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 156 selfloop transitions, 30 changer transitions 0/196 dead transitions. [2025-02-06 18:30:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 196 transitions, 1466 flow [2025-02-06 18:30:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:30:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:30:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2025-02-06 18:30:47,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5399305555555556 [2025-02-06 18:30:47,941 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 529 flow. Second operand 12 states and 311 transitions. [2025-02-06 18:30:47,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 196 transitions, 1466 flow [2025-02-06 18:30:47,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 196 transitions, 1438 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 18:30:47,957 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 741 flow [2025-02-06 18:30:47,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=741, PETRI_PLACES=111, PETRI_TRANSITIONS=88} [2025-02-06 18:30:47,958 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2025-02-06 18:30:47,958 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 741 flow [2025-02-06 18:30:47,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:47,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:47,958 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:47,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:30:48,158 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,SelfDestructingSolverStorable13 [2025-02-06 18:30:48,159 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:48,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1023892260, now seen corresponding path program 1 times [2025-02-06 18:30:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155194468] [2025-02-06 18:30:48,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:48,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:30:48,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:30:48,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:48,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:48,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:48,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155194468] [2025-02-06 18:30:48,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155194468] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:30:48,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:30:48,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:30:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978982383] [2025-02-06 18:30:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:30:48,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:30:48,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:48,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:30:48,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:30:48,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:30:48,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 88 transitions, 741 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:48,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:48,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:30:48,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:49,341 INFO L124 PetriNetUnfolderBase]: 3791/7404 cut-off events. [2025-02-06 18:30:49,341 INFO L125 PetriNetUnfolderBase]: For 18755/18755 co-relation queries the response was YES. [2025-02-06 18:30:49,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23621 conditions, 7404 events. 3791/7404 cut-off events. For 18755/18755 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 48894 event pairs, 624 based on Foata normal form. 41/7414 useless extension candidates. Maximal degree in co-relation 20521. Up to 3410 conditions per place. [2025-02-06 18:30:49,377 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 153 selfloop transitions, 42 changer transitions 0/205 dead transitions. [2025-02-06 18:30:49,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 1726 flow [2025-02-06 18:30:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:30:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:30:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 303 transitions. [2025-02-06 18:30:49,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2025-02-06 18:30:49,379 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 741 flow. Second operand 12 states and 303 transitions. [2025-02-06 18:30:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 1726 flow [2025-02-06 18:30:49,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 205 transitions, 1684 flow, removed 18 selfloop flow, removed 3 redundant places. [2025-02-06 18:30:49,410 INFO L231 Difference]: Finished difference. Result has 125 places, 102 transitions, 1031 flow [2025-02-06 18:30:49,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1031, PETRI_PLACES=125, PETRI_TRANSITIONS=102} [2025-02-06 18:30:49,410 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 79 predicate places. [2025-02-06 18:30:49,410 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 1031 flow [2025-02-06 18:30:49,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:49,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:49,411 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:49,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:30:49,411 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:49,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:49,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1487556620, now seen corresponding path program 1 times [2025-02-06 18:30:49,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:49,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909804628] [2025-02-06 18:30:49,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:49,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:49,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:30:49,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:30:49,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:49,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:49,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909804628] [2025-02-06 18:30:49,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909804628] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:49,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780122376] [2025-02-06 18:30:49,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:49,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:49,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:49,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:49,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:30:49,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:30:49,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:30:49,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:49,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:49,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:30:49,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:49,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:30:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:50,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780122376] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:30:50,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:30:50,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-02-06 18:30:50,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530088452] [2025-02-06 18:30:50,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:30:50,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 18:30:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:50,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 18:30:50,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 18:30:50,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-02-06 18:30:50,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 102 transitions, 1031 flow. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:50,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:50,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-02-06 18:30:50,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:50,996 INFO L124 PetriNetUnfolderBase]: 4707/8955 cut-off events. [2025-02-06 18:30:50,996 INFO L125 PetriNetUnfolderBase]: For 27416/27416 co-relation queries the response was YES. [2025-02-06 18:30:51,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29635 conditions, 8955 events. 4707/8955 cut-off events. For 27416/27416 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 57404 event pairs, 684 based on Foata normal form. 95/9019 useless extension candidates. Maximal degree in co-relation 26272. Up to 3426 conditions per place. [2025-02-06 18:30:51,046 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 241 selfloop transitions, 67 changer transitions 0/317 dead transitions. [2025-02-06 18:30:51,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 317 transitions, 2686 flow [2025-02-06 18:30:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 18:30:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-06 18:30:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 545 transitions. [2025-02-06 18:30:51,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4730902777777778 [2025-02-06 18:30:51,048 INFO L175 Difference]: Start difference. First operand has 125 places, 102 transitions, 1031 flow. Second operand 24 states and 545 transitions. [2025-02-06 18:30:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 317 transitions, 2686 flow [2025-02-06 18:30:51,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 317 transitions, 2618 flow, removed 24 selfloop flow, removed 4 redundant places. [2025-02-06 18:30:51,100 INFO L231 Difference]: Finished difference. Result has 150 places, 125 transitions, 1412 flow [2025-02-06 18:30:51,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1412, PETRI_PLACES=150, PETRI_TRANSITIONS=125} [2025-02-06 18:30:51,101 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2025-02-06 18:30:51,101 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 125 transitions, 1412 flow [2025-02-06 18:30:51,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:51,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:51,102 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:51,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:30:51,302 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,SelfDestructingSolverStorable15 [2025-02-06 18:30:51,302 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:51,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -232592464, now seen corresponding path program 1 times [2025-02-06 18:30:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73795937] [2025-02-06 18:30:51,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:51,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:30:51,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:30:51,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:51,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:51,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73795937] [2025-02-06 18:30:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73795937] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966691482] [2025-02-06 18:30:51,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:51,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:51,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:51,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:30:51,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:30:51,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:30:51,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:51,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:51,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:30:51,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:51,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:30:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966691482] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:30:51,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:30:51,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 18:30:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505103329] [2025-02-06 18:30:51,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:30:51,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 18:30:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:51,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 18:30:51,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-02-06 18:30:51,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:30:51,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 125 transitions, 1412 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:51,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:51,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:30:51,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:53,266 INFO L124 PetriNetUnfolderBase]: 5840/11449 cut-off events. [2025-02-06 18:30:53,266 INFO L125 PetriNetUnfolderBase]: For 44941/44941 co-relation queries the response was YES. [2025-02-06 18:30:53,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37253 conditions, 11449 events. 5840/11449 cut-off events. For 44941/44941 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 77381 event pairs, 1231 based on Foata normal form. 438/11848 useless extension candidates. Maximal degree in co-relation 36258. Up to 3025 conditions per place. [2025-02-06 18:30:53,375 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 202 selfloop transitions, 107 changer transitions 0/320 dead transitions. [2025-02-06 18:30:53,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 320 transitions, 3067 flow [2025-02-06 18:30:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 18:30:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 18:30:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 484 transitions. [2025-02-06 18:30:53,377 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2025-02-06 18:30:53,377 INFO L175 Difference]: Start difference. First operand has 150 places, 125 transitions, 1412 flow. Second operand 20 states and 484 transitions. [2025-02-06 18:30:53,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 320 transitions, 3067 flow [2025-02-06 18:30:53,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 320 transitions, 2695 flow, removed 94 selfloop flow, removed 12 redundant places. [2025-02-06 18:30:53,478 INFO L231 Difference]: Finished difference. Result has 150 places, 155 transitions, 1683 flow [2025-02-06 18:30:53,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1683, PETRI_PLACES=150, PETRI_TRANSITIONS=155} [2025-02-06 18:30:53,479 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2025-02-06 18:30:53,479 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 155 transitions, 1683 flow [2025-02-06 18:30:53,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:53,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:53,479 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-02-06 18:30:53,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:30:53,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:53,680 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:53,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 708303303, now seen corresponding path program 2 times [2025-02-06 18:30:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131237320] [2025-02-06 18:30:53,681 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:30:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:53,705 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 18:30:53,758 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 18:30:53,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:30:53,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:54,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:54,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131237320] [2025-02-06 18:30:54,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131237320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:54,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146429121] [2025-02-06 18:30:54,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:30:54,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:54,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:54,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:54,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:30:54,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 18:30:54,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 18:30:54,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:30:54,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:54,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:30:54,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:54,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:30:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146429121] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:30:54,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:30:54,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 18:30:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010609000] [2025-02-06 18:30:54,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:30:54,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:30:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:54,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:30:54,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:30:54,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-02-06 18:30:54,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 155 transitions, 1683 flow. Second operand has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:54,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:54,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-02-06 18:30:54,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:30:57,290 INFO L124 PetriNetUnfolderBase]: 8373/16446 cut-off events. [2025-02-06 18:30:57,291 INFO L125 PetriNetUnfolderBase]: For 52848/52848 co-relation queries the response was YES. [2025-02-06 18:30:57,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53685 conditions, 16446 events. 8373/16446 cut-off events. For 52848/52848 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 111611 event pairs, 2419 based on Foata normal form. 144/16521 useless extension candidates. Maximal degree in co-relation 52667. Up to 7081 conditions per place. [2025-02-06 18:30:57,512 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 429 selfloop transitions, 52 changer transitions 0/495 dead transitions. [2025-02-06 18:30:57,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 495 transitions, 4405 flow [2025-02-06 18:30:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 18:30:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 18:30:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 717 transitions. [2025-02-06 18:30:57,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2025-02-06 18:30:57,514 INFO L175 Difference]: Start difference. First operand has 150 places, 155 transitions, 1683 flow. Second operand 23 states and 717 transitions. [2025-02-06 18:30:57,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 495 transitions, 4405 flow [2025-02-06 18:30:57,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 495 transitions, 4209 flow, removed 86 selfloop flow, removed 4 redundant places. [2025-02-06 18:30:57,669 INFO L231 Difference]: Finished difference. Result has 174 places, 181 transitions, 2082 flow [2025-02-06 18:30:57,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2082, PETRI_PLACES=174, PETRI_TRANSITIONS=181} [2025-02-06 18:30:57,670 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2025-02-06 18:30:57,670 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 181 transitions, 2082 flow [2025-02-06 18:30:57,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:57,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:30:57,670 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:30:57,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:30:57,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:30:57,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:30:57,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:30:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 612461527, now seen corresponding path program 1 times [2025-02-06 18:30:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:30:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800057533] [2025-02-06 18:30:57,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:30:57,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 18:30:57,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 18:30:57,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:57,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:30:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800057533] [2025-02-06 18:30:58,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800057533] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:30:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325355492] [2025-02-06 18:30:58,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:30:58,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:30:58,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:30:58,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:30:58,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:30:58,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 18:30:58,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 18:30:58,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:30:58,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:30:58,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:30:58,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:30:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:58,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:30:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:30:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325355492] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:30:58,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:30:58,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2025-02-06 18:30:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331505162] [2025-02-06 18:30:58,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:30:58,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:30:58,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:30:58,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:30:58,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:30:58,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-02-06 18:30:58,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 181 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:30:58,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:30:58,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-02-06 18:30:58,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:02,238 INFO L124 PetriNetUnfolderBase]: 13005/25416 cut-off events. [2025-02-06 18:31:02,238 INFO L125 PetriNetUnfolderBase]: For 73434/73434 co-relation queries the response was YES. [2025-02-06 18:31:02,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81257 conditions, 25416 events. 13005/25416 cut-off events. For 73434/73434 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 188224 event pairs, 1942 based on Foata normal form. 192/25526 useless extension candidates. Maximal degree in co-relation 79506. Up to 5478 conditions per place. [2025-02-06 18:31:02,520 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 372 selfloop transitions, 200 changer transitions 0/583 dead transitions. [2025-02-06 18:31:02,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 583 transitions, 5726 flow [2025-02-06 18:31:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 18:31:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 18:31:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 774 transitions. [2025-02-06 18:31:02,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.50390625 [2025-02-06 18:31:02,523 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 2082 flow. Second operand 32 states and 774 transitions. [2025-02-06 18:31:02,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 583 transitions, 5726 flow [2025-02-06 18:31:02,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 583 transitions, 5629 flow, removed 25 selfloop flow, removed 6 redundant places. [2025-02-06 18:31:02,748 INFO L231 Difference]: Finished difference. Result has 209 places, 300 transitions, 4125 flow [2025-02-06 18:31:02,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4125, PETRI_PLACES=209, PETRI_TRANSITIONS=300} [2025-02-06 18:31:02,748 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 163 predicate places. [2025-02-06 18:31:02,748 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 300 transitions, 4125 flow [2025-02-06 18:31:02,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:02,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:02,749 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:02,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:31:02,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:02,949 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-02-06 18:31:02,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1921398825, now seen corresponding path program 1 times [2025-02-06 18:31:02,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:02,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168921825] [2025-02-06 18:31:02,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:02,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:02,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 18:31:03,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 18:31:03,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:03,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168921825] [2025-02-06 18:31:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168921825] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157808370] [2025-02-06 18:31:03,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:03,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:03,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:31:03,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:31:03,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 18:31:03,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 18:31:03,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:03,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:03,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 18:31:03,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:04,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157808370] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:04,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:04,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2025-02-06 18:31:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543451984] [2025-02-06 18:31:04,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:04,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:31:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:04,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:31:04,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:31:04,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-02-06 18:31:04,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 300 transitions, 4125 flow. Second operand has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:04,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:04,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-02-06 18:31:04,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand