./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym.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-ext/09_fmaxsym.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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:31:02,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:31:03,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:31:03,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:31:03,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:31:03,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:31:03,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:31:03,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:31:03,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:31:03,057 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:31:03,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:31:03,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:31:03,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:31:03,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:31:03,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:31:03,059 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:31:03,060 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:31:03,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:31:03,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:31:03,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:31:03,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:03,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:31:03,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:31:03,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:31:03,061 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 -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2025-02-06 18:31:03,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:31:03,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:31:03,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:31:03,277 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:31:03,277 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:31:03,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2025-02-06 18:31:04,449 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/76fb8cfba/4363b7d4686e40c89a0237ba34cd54ef/FLAG267daf98c [2025-02-06 18:31:04,730 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:31:04,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2025-02-06 18:31:04,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/76fb8cfba/4363b7d4686e40c89a0237ba34cd54ef/FLAG267daf98c [2025-02-06 18:31:05,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/76fb8cfba/4363b7d4686e40c89a0237ba34cd54ef [2025-02-06 18:31:05,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:31:05,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:31:05,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:05,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:31:05,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:31:05,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aaf455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05, skipping insertion in model container [2025-02-06 18:31:05,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:31:05,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:05,239 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:31:05,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:05,309 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:31:05,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05 WrapperNode [2025-02-06 18:31:05,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:05,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:05,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:31:05,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:31:05,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,344 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2025-02-06 18:31:05,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:05,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:31:05,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:31:05,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:31:05,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,373 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 1 writes are split as follows [0, 0, 1]. [2025-02-06 18:31:05,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,382 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:31:05,390 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:31:05,391 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:31:05,391 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:31:05,392 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (1/1) ... [2025-02-06 18:31:05,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:05,419 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 18:31:05,421 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 18:31:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:31:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 18:31:05,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:31:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:31:05,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:31:05,437 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 18:31:05,526 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:31:05,528 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:31:05,688 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:31:05,689 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:31:05,802 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:31:05,803 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:31:05,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:05 BoogieIcfgContainer [2025-02-06 18:31:05,803 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:31:05,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:31:05,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:31:05,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:31:05,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:31:05" (1/3) ... [2025-02-06 18:31:05,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2764121f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:05, skipping insertion in model container [2025-02-06 18:31:05,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:05" (2/3) ... [2025-02-06 18:31:05,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2764121f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:05, skipping insertion in model container [2025-02-06 18:31:05,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:05" (3/3) ... [2025-02-06 18:31:05,813 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2025-02-06 18:31:05,825 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:31:05,827 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-02-06 18:31:05,827 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:31:05,859 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:05,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 34 transitions, 72 flow [2025-02-06 18:31:05,901 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2025-02-06 18:31:05,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:05,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-02-06 18:31:05,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 34 transitions, 72 flow [2025-02-06 18:31:05,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 34 transitions, 72 flow [2025-02-06 18:31:05,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:05,924 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;@17e4af48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:05,925 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-02-06 18:31:05,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:05,930 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:31:05,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:05,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:05,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:31:05,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:31:05,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash 244415, now seen corresponding path program 1 times [2025-02-06 18:31:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:05,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261919522] [2025-02-06 18:31:05,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:05,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:31:06,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:31:06,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:06,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:06,147 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 18:31:06,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261919522] [2025-02-06 18:31:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261919522] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:06,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086663751] [2025-02-06 18:31:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:06,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:06,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:06,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:06,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-02-06 18:31:06,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:31:06,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:06,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-02-06 18:31:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:06,275 INFO L124 PetriNetUnfolderBase]: 24/89 cut-off events. [2025-02-06 18:31:06,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:06,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 89 events. 24/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 20 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 128. Up to 64 conditions per place. [2025-02-06 18:31:06,278 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 19 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2025-02-06 18:31:06,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 116 flow [2025-02-06 18:31:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:31:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:31:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2025-02-06 18:31:06,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5514705882352942 [2025-02-06 18:31:06,290 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 72 flow. Second operand 4 states and 75 transitions. [2025-02-06 18:31:06,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 116 flow [2025-02-06 18:31:06,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:31:06,295 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 92 flow [2025-02-06 18:31:06,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-02-06 18:31:06,299 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2025-02-06 18:31:06,300 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 92 flow [2025-02-06 18:31:06,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:31:06,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:06,300 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:31:06,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:31:06,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:31:06,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1308374806, now seen corresponding path program 1 times [2025-02-06 18:31:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239626672] [2025-02-06 18:31:06,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:06,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:06,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:06,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:06,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:06,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:06,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:06,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239626672] [2025-02-06 18:31:06,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239626672] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:06,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461263969] [2025-02-06 18:31:06,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:06,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:06,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:06,424 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 18:31:06,426 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 18:31:06,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:06,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:06,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:06,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:06,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:31:06,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:06,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:31:06,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461263969] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:31:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:31:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935887593] [2025-02-06 18:31:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:06,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:06,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:06,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:31:06,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-02-06 18:31:06,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 18:31:06,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:06,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-02-06 18:31:06,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:06,644 INFO L124 PetriNetUnfolderBase]: 24/88 cut-off events. [2025-02-06 18:31:06,645 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:31:06,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 88 events. 24/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 20 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 151. Up to 59 conditions per place. [2025-02-06 18:31:06,645 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 15 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2025-02-06 18:31:06,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 130 flow [2025-02-06 18:31:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:31:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:31:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-02-06 18:31:06,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2025-02-06 18:31:06,647 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 92 flow. Second operand 6 states and 94 transitions. [2025-02-06 18:31:06,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 130 flow [2025-02-06 18:31:06,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:31:06,648 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 98 flow [2025-02-06 18:31:06,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2025-02-06 18:31:06,649 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2025-02-06 18:31:06,649 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 98 flow [2025-02-06 18:31:06,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 18:31:06,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:06,649 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:31:06,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:31:06,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:06,854 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:31:06,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1904913130, now seen corresponding path program 1 times [2025-02-06 18:31:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816969738] [2025-02-06 18:31:06,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:06,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:31:06,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:31:06,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:06,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:31:06,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:06,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816969738] [2025-02-06 18:31:06,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816969738] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:06,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:06,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:06,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274117286] [2025-02-06 18:31:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:06,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:06,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:06,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:06,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-02-06 18:31:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 18:31:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-02-06 18:31:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:06,948 INFO L124 PetriNetUnfolderBase]: 24/87 cut-off events. [2025-02-06 18:31:06,948 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:31:06,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 87 events. 24/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 20 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 147. Up to 62 conditions per place. [2025-02-06 18:31:06,949 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 16 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2025-02-06 18:31:06,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 134 flow [2025-02-06 18:31:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-02-06 18:31:06,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2025-02-06 18:31:06,950 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 98 flow. Second operand 3 states and 55 transitions. [2025-02-06 18:31:06,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 134 flow [2025-02-06 18:31:06,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 112 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:31:06,952 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 80 flow [2025-02-06 18:31:06,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2025-02-06 18:31:06,952 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2025-02-06 18:31:06,952 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 80 flow [2025-02-06 18:31:06,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 18:31:06,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:06,953 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:06,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:31:06,953 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:31:06,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 150895729, now seen corresponding path program 1 times [2025-02-06 18:31:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926326543] [2025-02-06 18:31:06,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:06,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:06,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:06,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:06,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:07,018 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 18:31:07,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926326543] [2025-02-06 18:31:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926326543] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432357442] [2025-02-06 18:31:07,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:07,025 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 18:31:07,026 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 18:31:07,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:07,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:07,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:07,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:07,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:31:07,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:07,101 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 18:31:07,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:07,129 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 18:31:07,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432357442] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:07,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:07,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:31:07,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914848012] [2025-02-06 18:31:07,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:07,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:31:07,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:07,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:31:07,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:31:07,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-02-06 18:31:07,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 80 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:07,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:07,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-02-06 18:31:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:07,258 INFO L124 PetriNetUnfolderBase]: 24/91 cut-off events. [2025-02-06 18:31:07,259 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-06 18:31:07,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 91 events. 24/91 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 172 event pairs, 20 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 140. Up to 60 conditions per place. [2025-02-06 18:31:07,259 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 16 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2025-02-06 18:31:07,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 141 flow [2025-02-06 18:31:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2025-02-06 18:31:07,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2025-02-06 18:31:07,263 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 80 flow. Second operand 7 states and 109 transitions. [2025-02-06 18:31:07,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 141 flow [2025-02-06 18:31:07,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:07,264 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 106 flow [2025-02-06 18:31:07,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-02-06 18:31:07,264 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2025-02-06 18:31:07,265 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 106 flow [2025-02-06 18:31:07,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:07,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:07,265 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2025-02-06 18:31:07,273 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 18:31:07,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:07,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:31:07,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1871328175, now seen corresponding path program 2 times [2025-02-06 18:31:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525103408] [2025-02-06 18:31:07,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:31:07,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:07,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:31:07,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:31:07,482 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:31:07,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525103408] [2025-02-06 18:31:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525103408] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851301960] [2025-02-06 18:31:07,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:31:07,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:07,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:07,602 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 18:31:07,603 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 18:31:07,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:31:07,657 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:31:07,657 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:31:07,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:07,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:31:07,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:07,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:07,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851301960] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:07,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:07,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-06 18:31:07,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27363229] [2025-02-06 18:31:07,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:07,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:31:07,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:07,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:31:07,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:31:07,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-02-06 18:31:07,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 106 flow. Second operand has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 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 18:31:07,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:07,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-02-06 18:31:07,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:07,937 INFO L124 PetriNetUnfolderBase]: 24/100 cut-off events. [2025-02-06 18:31:07,938 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-06 18:31:07,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 100 events. 24/100 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 20 based on Foata normal form. 3/94 useless extension candidates. Maximal degree in co-relation 142. Up to 60 conditions per place. [2025-02-06 18:31:07,938 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 16 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2025-02-06 18:31:07,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 200 flow [2025-02-06 18:31:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:31:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:31:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 188 transitions. [2025-02-06 18:31:07,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4253393665158371 [2025-02-06 18:31:07,940 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 106 flow. Second operand 13 states and 188 transitions. [2025-02-06 18:31:07,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 200 flow [2025-02-06 18:31:07,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 41 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:07,941 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 179 flow [2025-02-06 18:31:07,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2025-02-06 18:31:07,942 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2025-02-06 18:31:07,942 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 179 flow [2025-02-06 18:31:07,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 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 18:31:07,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:07,942 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2025-02-06 18:31:07,951 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 18:31:08,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:08,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:31:08,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2007898074, now seen corresponding path program 3 times [2025-02-06 18:31:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702132456] [2025-02-06 18:31:08,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:31:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:08,160 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 7 equivalence classes. [2025-02-06 18:31:08,186 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:31:08,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-06 18:31:08,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:08,187 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:08,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:31:08,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:31:08,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:08,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:08,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:08,209 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:08,210 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2025-02-06 18:31:08,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2025-02-06 18:31:08,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2025-02-06 18:31:08,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2025-02-06 18:31:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2025-02-06 18:31:08,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:31:08,213 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-02-06 18:31:08,214 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:08,214 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:31:08,242 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:08,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions, 124 flow [2025-02-06 18:31:08,251 INFO L124 PetriNetUnfolderBase]: 5/62 cut-off events. [2025-02-06 18:31:08,256 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:31:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 62 events. 5/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2025-02-06 18:31:08,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 57 transitions, 124 flow [2025-02-06 18:31:08,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 124 flow [2025-02-06 18:31:08,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:08,260 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;@17e4af48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:08,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-02-06 18:31:08,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:08,261 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:31:08,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:08,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:08,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:31:08,261 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:08,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash 301016, now seen corresponding path program 1 times [2025-02-06 18:31:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689407849] [2025-02-06 18:31:08,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:08,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:31:08,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:31:08,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:08,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:08,306 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 18:31:08,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:08,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689407849] [2025-02-06 18:31:08,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689407849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:08,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:08,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449621447] [2025-02-06 18:31:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:08,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:08,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:08,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:08,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:08,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:08,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:08,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:08,462 INFO L124 PetriNetUnfolderBase]: 640/1359 cut-off events. [2025-02-06 18:31:08,462 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2025-02-06 18:31:08,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 1359 events. 640/1359 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7841 event pairs, 570 based on Foata normal form. 70/1302 useless extension candidates. Maximal degree in co-relation 1597. Up to 1043 conditions per place. [2025-02-06 18:31:08,470 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 31 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2025-02-06 18:31:08,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 190 flow [2025-02-06 18:31:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:31:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:31:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-02-06 18:31:08,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2025-02-06 18:31:08,471 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 124 flow. Second operand 4 states and 128 transitions. [2025-02-06 18:31:08,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 190 flow [2025-02-06 18:31:08,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:31:08,472 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 142 flow [2025-02-06 18:31:08,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-02-06 18:31:08,473 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2025-02-06 18:31:08,473 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 142 flow [2025-02-06 18:31:08,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:08,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:08,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:31:08,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:31:08,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:08,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash 377882186, now seen corresponding path program 1 times [2025-02-06 18:31:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866035404] [2025-02-06 18:31:08,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:08,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:08,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:08,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:08,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:08,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866035404] [2025-02-06 18:31:08,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866035404] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80909029] [2025-02-06 18:31:08,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:08,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:08,515 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 18:31:08,517 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 18:31:08,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:08,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:08,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:08,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:08,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:31:08,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:08,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:31:08,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80909029] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:08,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:31:08,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:31:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086043141] [2025-02-06 18:31:08,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:08,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:08,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:08,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:08,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:31:08,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:08,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:08,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:08,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:08,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:08,765 INFO L124 PetriNetUnfolderBase]: 640/1358 cut-off events. [2025-02-06 18:31:08,766 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2025-02-06 18:31:08,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 1358 events. 640/1358 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7805 event pairs, 570 based on Foata normal form. 1/1232 useless extension candidates. Maximal degree in co-relation 2433. Up to 1038 conditions per place. [2025-02-06 18:31:08,773 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 27 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2025-02-06 18:31:08,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 204 flow [2025-02-06 18:31:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:31:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:31:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2025-02-06 18:31:08,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2025-02-06 18:31:08,775 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 142 flow. Second operand 6 states and 166 transitions. [2025-02-06 18:31:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 204 flow [2025-02-06 18:31:08,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:31:08,776 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 148 flow [2025-02-06 18:31:08,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-02-06 18:31:08,777 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2025-02-06 18:31:08,778 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 148 flow [2025-02-06 18:31:08,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:08,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:08,778 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:31:08,784 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 18:31:08,982 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,SelfDestructingSolverStorable7 [2025-02-06 18:31:08,982 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:08,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1170553873, now seen corresponding path program 1 times [2025-02-06 18:31:08,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564447815] [2025-02-06 18:31:08,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:08,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:31:08,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:31:08,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:08,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:31:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564447815] [2025-02-06 18:31:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564447815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936862795] [2025-02-06 18:31:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:09,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:09,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:09,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:09,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:09,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 18:31:09,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:09,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:09,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:09,124 INFO L124 PetriNetUnfolderBase]: 640/1357 cut-off events. [2025-02-06 18:31:09,125 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-02-06 18:31:09,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 1357 events. 640/1357 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7828 event pairs, 570 based on Foata normal form. 1/1232 useless extension candidates. Maximal degree in co-relation 2429. Up to 1041 conditions per place. [2025-02-06 18:31:09,131 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 28 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2025-02-06 18:31:09,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 54 transitions, 208 flow [2025-02-06 18:31:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-06 18:31:09,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5672514619883041 [2025-02-06 18:31:09,132 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 148 flow. Second operand 3 states and 97 transitions. [2025-02-06 18:31:09,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 54 transitions, 208 flow [2025-02-06 18:31:09,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 186 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:31:09,134 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 130 flow [2025-02-06 18:31:09,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2025-02-06 18:31:09,134 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2025-02-06 18:31:09,134 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 130 flow [2025-02-06 18:31:09,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 18:31:09,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:09,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:09,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:31:09,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:09,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:09,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1115122364, now seen corresponding path program 1 times [2025-02-06 18:31:09,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:09,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936510981] [2025-02-06 18:31:09,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:09,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:09,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:09,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:09,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:09,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:09,199 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 18:31:09,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:09,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936510981] [2025-02-06 18:31:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936510981] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:09,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307564810] [2025-02-06 18:31:09,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:09,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:09,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:09,201 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 18:31:09,205 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 18:31:09,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:09,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:09,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:09,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:09,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:31:09,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:09,271 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 18:31:09,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:09,293 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 18:31:09,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307564810] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:09,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:09,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:31:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194542092] [2025-02-06 18:31:09,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:09,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:31:09,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:09,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:31:09,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:31:09,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:09,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 130 flow. Second operand has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 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 18:31:09,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:09,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:09,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:09,468 INFO L124 PetriNetUnfolderBase]: 640/1361 cut-off events. [2025-02-06 18:31:09,469 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2025-02-06 18:31:09,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1361 events. 640/1361 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7820 event pairs, 570 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 2422. Up to 1039 conditions per place. [2025-02-06 18:31:09,476 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 28 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2025-02-06 18:31:09,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 215 flow [2025-02-06 18:31:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2025-02-06 18:31:09,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47869674185463656 [2025-02-06 18:31:09,478 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 130 flow. Second operand 7 states and 191 transitions. [2025-02-06 18:31:09,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 215 flow [2025-02-06 18:31:09,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:09,480 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 156 flow [2025-02-06 18:31:09,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2025-02-06 18:31:09,481 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2025-02-06 18:31:09,481 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 156 flow [2025-02-06 18:31:09,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 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 18:31:09,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:09,481 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:09,487 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 18:31:09,681 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,SelfDestructingSolverStorable9 [2025-02-06 18:31:09,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:09,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:09,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1017320828, now seen corresponding path program 2 times [2025-02-06 18:31:09,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:09,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454383698] [2025-02-06 18:31:09,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:31:09,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:09,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:31:09,691 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-02-06 18:31:09,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:31:09,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:31:09,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454383698] [2025-02-06 18:31:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454383698] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:09,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402109786] [2025-02-06 18:31:09,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:09,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:09,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:09,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:09,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:09,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:09,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:31:09,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:09,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:09,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:09,852 INFO L124 PetriNetUnfolderBase]: 698/1447 cut-off events. [2025-02-06 18:31:09,852 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2025-02-06 18:31:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1447 events. 698/1447 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8312 event pairs, 291 based on Foata normal form. 36/1405 useless extension candidates. Maximal degree in co-relation 2607. Up to 976 conditions per place. [2025-02-06 18:31:09,858 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 48 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2025-02-06 18:31:09,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 287 flow [2025-02-06 18:31:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-02-06 18:31:09,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2025-02-06 18:31:09,859 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 156 flow. Second operand 3 states and 112 transitions. [2025-02-06 18:31:09,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 287 flow [2025-02-06 18:31:09,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:09,860 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 154 flow [2025-02-06 18:31:09,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2025-02-06 18:31:09,861 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2025-02-06 18:31:09,861 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 154 flow [2025-02-06 18:31:09,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:31:09,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:09,861 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:09,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:31:09,861 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:09,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1472174307, now seen corresponding path program 1 times [2025-02-06 18:31:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474749589] [2025-02-06 18:31:09,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:09,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:31:09,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:31:09,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:09,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:31:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474749589] [2025-02-06 18:31:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474749589] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:09,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:09,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:09,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209440998] [2025-02-06 18:31:09,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:09,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:09,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:09,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:09,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:09,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:31:09,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:09,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:09,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:10,014 INFO L124 PetriNetUnfolderBase]: 640/1398 cut-off events. [2025-02-06 18:31:10,014 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2025-02-06 18:31:10,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 1398 events. 640/1398 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8131 event pairs, 75 based on Foata normal form. 36/1380 useless extension candidates. Maximal degree in co-relation 2533. Up to 882 conditions per place. [2025-02-06 18:31:10,023 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 47 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-02-06 18:31:10,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 283 flow [2025-02-06 18:31:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2025-02-06 18:31:10,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2025-02-06 18:31:10,024 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 154 flow. Second operand 3 states and 111 transitions. [2025-02-06 18:31:10,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 283 flow [2025-02-06 18:31:10,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:10,026 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 152 flow [2025-02-06 18:31:10,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2025-02-06 18:31:10,026 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2025-02-06 18:31:10,026 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 152 flow [2025-02-06 18:31:10,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:31:10,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:10,026 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2025-02-06 18:31:10,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:31:10,026 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:10,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1077708502, now seen corresponding path program 1 times [2025-02-06 18:31:10,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:10,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139310899] [2025-02-06 18:31:10,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:10,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:10,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:10,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:10,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:10,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:10,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139310899] [2025-02-06 18:31:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139310899] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638767002] [2025-02-06 18:31:10,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:10,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:10,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:10,110 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 18:31:10,112 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 18:31:10,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:10,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:10,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:10,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:10,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:31:10,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:10,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638767002] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:10,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-06 18:31:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651425952] [2025-02-06 18:31:10,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:10,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:31:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:10,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:31:10,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:31:10,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2025-02-06 18:31:10,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 152 flow. Second operand has 15 states, 15 states have (on average 23.4) internal successors, (351), 15 states have internal predecessors, (351), 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 18:31:10,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:10,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2025-02-06 18:31:10,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:10,448 INFO L124 PetriNetUnfolderBase]: 640/1364 cut-off events. [2025-02-06 18:31:10,448 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2025-02-06 18:31:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2556 conditions, 1364 events. 640/1364 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7781 event pairs, 570 based on Foata normal form. 3/1248 useless extension candidates. Maximal degree in co-relation 2490. Up to 1039 conditions per place. [2025-02-06 18:31:10,454 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 28 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2025-02-06 18:31:10,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 61 transitions, 270 flow [2025-02-06 18:31:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:31:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:31:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 330 transitions. [2025-02-06 18:31:10,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44534412955465585 [2025-02-06 18:31:10,456 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 152 flow. Second operand 13 states and 330 transitions. [2025-02-06 18:31:10,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 61 transitions, 270 flow [2025-02-06 18:31:10,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 61 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:10,458 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 225 flow [2025-02-06 18:31:10,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=225, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2025-02-06 18:31:10,458 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2025-02-06 18:31:10,459 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 225 flow [2025-02-06 18:31:10,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.4) internal successors, (351), 15 states have internal predecessors, (351), 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 18:31:10,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:10,459 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2025-02-06 18:31:10,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:31:10,659 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,SelfDestructingSolverStorable12 [2025-02-06 18:31:10,660 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-02-06 18:31:10,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash 663045768, now seen corresponding path program 2 times [2025-02-06 18:31:10,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847650163] [2025-02-06 18:31:10,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:31:10,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:10,666 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:31:10,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:31:10,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:31:10,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:10,677 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:10,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:31:10,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:31:10,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:10,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:10,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:10,700 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:10,700 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2025-02-06 18:31:10,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2025-02-06 18:31:10,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2025-02-06 18:31:10,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2025-02-06 18:31:10,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2025-02-06 18:31:10,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2025-02-06 18:31:10,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2025-02-06 18:31:10,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:31:10,702 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2025-02-06 18:31:10,702 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:10,702 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 18:31:10,726 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:10,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 80 transitions, 178 flow [2025-02-06 18:31:10,734 INFO L124 PetriNetUnfolderBase]: 7/88 cut-off events. [2025-02-06 18:31:10,735 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:31:10,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 7/88 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 232 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2025-02-06 18:31:10,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 80 transitions, 178 flow [2025-02-06 18:31:10,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 80 transitions, 178 flow [2025-02-06 18:31:10,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:10,737 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;@17e4af48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:10,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-02-06 18:31:10,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:10,738 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:31:10,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:10,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:10,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:31:10,738 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:10,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash 380456, now seen corresponding path program 1 times [2025-02-06 18:31:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076098718] [2025-02-06 18:31:10,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:10,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:10,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:31:10,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:31:10,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:10,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:10,774 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 18:31:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076098718] [2025-02-06 18:31:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076098718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131050570] [2025-02-06 18:31:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:10,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:10,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:10,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:10,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:10,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:10,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:10,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:10,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:11,874 INFO L124 PetriNetUnfolderBase]: 11409/19214 cut-off events. [2025-02-06 18:31:11,875 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2025-02-06 18:31:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35544 conditions, 19214 events. 11409/19214 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 148430 event pairs, 10250 based on Foata normal form. 1159/18986 useless extension candidates. Maximal degree in co-relation 17138. Up to 15805 conditions per place. [2025-02-06 18:31:11,986 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 43 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2025-02-06 18:31:11,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 266 flow [2025-02-06 18:31:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:31:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:31:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2025-02-06 18:31:11,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.565625 [2025-02-06 18:31:11,990 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 178 flow. Second operand 4 states and 181 transitions. [2025-02-06 18:31:11,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 266 flow [2025-02-06 18:31:11,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 264 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-06 18:31:11,992 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 192 flow [2025-02-06 18:31:11,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2025-02-06 18:31:11,993 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2025-02-06 18:31:11,994 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 192 flow [2025-02-06 18:31:11,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:11,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:11,994 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:31:11,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:31:11,994 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:11,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1550408630, now seen corresponding path program 1 times [2025-02-06 18:31:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538038747] [2025-02-06 18:31:11,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:12,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:12,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:12,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:12,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:12,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538038747] [2025-02-06 18:31:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538038747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725024205] [2025-02-06 18:31:12,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:12,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:12,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:12,044 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 18:31:12,046 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 18:31:12,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:12,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:12,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:12,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:12,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:31:12,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:12,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:31:12,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725024205] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:12,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:31:12,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:31:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050886351] [2025-02-06 18:31:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:12,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:12,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:12,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:31:12,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:12,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 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 18:31:12,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:12,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:12,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:13,135 INFO L124 PetriNetUnfolderBase]: 11409/19213 cut-off events. [2025-02-06 18:31:13,136 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2025-02-06 18:31:13,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35433 conditions, 19213 events. 11409/19213 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 148410 event pairs, 10250 based on Foata normal form. 1/17827 useless extension candidates. Maximal degree in co-relation 35413. Up to 15800 conditions per place. [2025-02-06 18:31:13,293 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 39 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2025-02-06 18:31:13,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 278 flow [2025-02-06 18:31:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:31:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:31:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2025-02-06 18:31:13,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2025-02-06 18:31:13,295 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 192 flow. Second operand 6 states and 238 transitions. [2025-02-06 18:31:13,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 278 flow [2025-02-06 18:31:13,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:31:13,297 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 198 flow [2025-02-06 18:31:13,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2025-02-06 18:31:13,297 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2025-02-06 18:31:13,297 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 198 flow [2025-02-06 18:31:13,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 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 18:31:13,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:13,297 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:31:13,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 18:31:13,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:13,502 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:13,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash -818026945, now seen corresponding path program 1 times [2025-02-06 18:31:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015389825] [2025-02-06 18:31:13,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:13,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:13,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:31:13,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:31:13,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:13,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:31:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015389825] [2025-02-06 18:31:13,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015389825] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:13,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:13,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164624327] [2025-02-06 18:31:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:13,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:13,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:13,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:13,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:13,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:13,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:13,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:13,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:14,664 INFO L124 PetriNetUnfolderBase]: 11409/19212 cut-off events. [2025-02-06 18:31:14,664 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2025-02-06 18:31:14,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35435 conditions, 19212 events. 11409/19212 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 148411 event pairs, 10250 based on Foata normal form. 1/17827 useless extension candidates. Maximal degree in co-relation 35409. Up to 15803 conditions per place. [2025-02-06 18:31:14,740 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 40 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2025-02-06 18:31:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 282 flow [2025-02-06 18:31:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2025-02-06 18:31:14,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2025-02-06 18:31:14,743 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 198 flow. Second operand 3 states and 139 transitions. [2025-02-06 18:31:14,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 282 flow [2025-02-06 18:31:14,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 260 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:31:14,745 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 180 flow [2025-02-06 18:31:14,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2025-02-06 18:31:14,746 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2025-02-06 18:31:14,746 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 180 flow [2025-02-06 18:31:14,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:14,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:14,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:14,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:31:14,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:14,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash -179714194, now seen corresponding path program 1 times [2025-02-06 18:31:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896459104] [2025-02-06 18:31:14,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:14,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:14,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:14,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:14,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:14,786 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 18:31:14,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896459104] [2025-02-06 18:31:14,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896459104] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753617210] [2025-02-06 18:31:14,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:14,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:14,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:14,788 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 18:31:14,790 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 18:31:14,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:31:14,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:31:14,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:14,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:14,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:31:14,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:14,861 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 18:31:14,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:14,881 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 18:31:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753617210] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:14,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:14,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:31:14,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123882118] [2025-02-06 18:31:14,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:14,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:31:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:14,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:31:14,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:31:14,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:14,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 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 18:31:14,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:14,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:15,795 INFO L124 PetriNetUnfolderBase]: 11409/19216 cut-off events. [2025-02-06 18:31:15,795 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2025-02-06 18:31:15,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35438 conditions, 19216 events. 11409/19216 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 148460 event pairs, 10250 based on Foata normal form. 2/17833 useless extension candidates. Maximal degree in co-relation 35402. Up to 15801 conditions per place. [2025-02-06 18:31:15,986 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 40 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2025-02-06 18:31:15,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 289 flow [2025-02-06 18:31:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:31:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:31:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 273 transitions. [2025-02-06 18:31:15,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-02-06 18:31:15,987 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 180 flow. Second operand 7 states and 273 transitions. [2025-02-06 18:31:15,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 289 flow [2025-02-06 18:31:15,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 79 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:15,989 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 206 flow [2025-02-06 18:31:15,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=7, PETRI_FLOW=206, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2025-02-06 18:31:15,989 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2025-02-06 18:31:15,989 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 206 flow [2025-02-06 18:31:15,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 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 18:31:15,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:15,990 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:15,996 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 18:31:16,194 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 18:31:16,194 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:16,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1702806866, now seen corresponding path program 2 times [2025-02-06 18:31:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:16,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74439819] [2025-02-06 18:31:16,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:31:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:16,199 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:31:16,201 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-02-06 18:31:16,201 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:31:16,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:31:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74439819] [2025-02-06 18:31:16,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74439819] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:16,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:16,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:16,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238959483] [2025-02-06 18:31:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:16,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:16,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:16,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:16,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:16,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 18:31:16,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:16,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:16,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:17,265 INFO L124 PetriNetUnfolderBase]: 12446/20587 cut-off events. [2025-02-06 18:31:17,265 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2025-02-06 18:31:17,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38288 conditions, 20587 events. 12446/20587 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 156972 event pairs, 6896 based on Foata normal form. 399/19948 useless extension candidates. Maximal degree in co-relation 38247. Up to 14759 conditions per place. [2025-02-06 18:31:17,359 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 72 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2025-02-06 18:31:17,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 414 flow [2025-02-06 18:31:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2025-02-06 18:31:17,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-02-06 18:31:17,360 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 206 flow. Second operand 3 states and 166 transitions. [2025-02-06 18:31:17,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 414 flow [2025-02-06 18:31:17,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 104 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:17,361 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 204 flow [2025-02-06 18:31:17,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2025-02-06 18:31:17,362 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2025-02-06 18:31:17,362 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 204 flow [2025-02-06 18:31:17,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 18:31:17,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:17,362 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:17,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:31:17,362 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:17,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1247404925, now seen corresponding path program 1 times [2025-02-06 18:31:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608008575] [2025-02-06 18:31:17,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:17,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:31:17,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:31:17,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:17,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:31:17,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608008575] [2025-02-06 18:31:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608008575] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:17,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:17,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:17,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424266712] [2025-02-06 18:31:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:17,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:17,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:17,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:17,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:17,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:17,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 18:31:17,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:17,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:17,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:18,610 INFO L124 PetriNetUnfolderBase]: 11409/19628 cut-off events. [2025-02-06 18:31:18,610 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2025-02-06 18:31:18,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36654 conditions, 19628 events. 11409/19628 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 157290 event pairs, 1538 based on Foata normal form. 399/19355 useless extension candidates. Maximal degree in co-relation 36614. Up to 13323 conditions per place. [2025-02-06 18:31:18,722 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 71 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2025-02-06 18:31:18,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 410 flow [2025-02-06 18:31:18,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2025-02-06 18:31:18,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-02-06 18:31:18,723 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 204 flow. Second operand 3 states and 165 transitions. [2025-02-06 18:31:18,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 410 flow [2025-02-06 18:31:18,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 103 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:18,727 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 202 flow [2025-02-06 18:31:18,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2025-02-06 18:31:18,727 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2025-02-06 18:31:18,727 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 202 flow [2025-02-06 18:31:18,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 18:31:18,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:18,728 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:18,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:31:18,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:18,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1961517265, now seen corresponding path program 1 times [2025-02-06 18:31:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469830018] [2025-02-06 18:31:18,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:18,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:18,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:18,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:18,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:18,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:18,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469830018] [2025-02-06 18:31:18,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469830018] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:18,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791683746] [2025-02-06 18:31:18,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:18,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:18,811 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 18:31:18,813 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 18:31:18,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:31:18,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:31:18,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:18,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:18,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:31:18,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:18,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:31:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:18,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791683746] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:31:18,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:31:18,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-06 18:31:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797772323] [2025-02-06 18:31:18,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:31:18,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:31:18,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:18,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:31:18,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:31:18,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:18,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 202 flow. Second operand has 15 states, 15 states have (on average 33.46666666666667) internal successors, (502), 15 states have internal predecessors, (502), 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 18:31:18,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:18,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:19,987 INFO L124 PetriNetUnfolderBase]: 11409/19219 cut-off events. [2025-02-06 18:31:19,988 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2025-02-06 18:31:20,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36263 conditions, 19219 events. 11409/19219 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 148353 event pairs, 10250 based on Foata normal form. 3/17843 useless extension candidates. Maximal degree in co-relation 36196. Up to 15801 conditions per place. [2025-02-06 18:31:20,083 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 40 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2025-02-06 18:31:20,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 344 flow [2025-02-06 18:31:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:31:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:31:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 472 transitions. [2025-02-06 18:31:20,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2025-02-06 18:31:20,085 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 202 flow. Second operand 13 states and 472 transitions. [2025-02-06 18:31:20,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 344 flow [2025-02-06 18:31:20,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 83 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:20,087 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 275 flow [2025-02-06 18:31:20,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=275, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2025-02-06 18:31:20,087 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 19 predicate places. [2025-02-06 18:31:20,087 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 275 flow [2025-02-06 18:31:20,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 33.46666666666667) internal successors, (502), 15 states have internal predecessors, (502), 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 18:31:20,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:20,087 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:20,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:31:20,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:20,288 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:20,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash -869366639, now seen corresponding path program 2 times [2025-02-06 18:31:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505363243] [2025-02-06 18:31:20,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:31:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:20,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:31:20,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 28 statements. [2025-02-06 18:31:20,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:31:20,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-06 18:31:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505363243] [2025-02-06 18:31:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505363243] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834769923] [2025-02-06 18:31:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:20,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:20,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:20,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:20,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:20,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:20,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:20,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:20,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:21,253 INFO L124 PetriNetUnfolderBase]: 12443/20554 cut-off events. [2025-02-06 18:31:21,253 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2025-02-06 18:31:21,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38286 conditions, 20554 events. 12443/20554 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 155290 event pairs, 3941 based on Foata normal form. 396/20079 useless extension candidates. Maximal degree in co-relation 38199. Up to 14696 conditions per place. [2025-02-06 18:31:21,379 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 77 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2025-02-06 18:31:21,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 486 flow [2025-02-06 18:31:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2025-02-06 18:31:21,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-02-06 18:31:21,380 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 275 flow. Second operand 3 states and 165 transitions. [2025-02-06 18:31:21,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 486 flow [2025-02-06 18:31:21,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 476 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:31:21,382 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 267 flow [2025-02-06 18:31:21,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2025-02-06 18:31:21,382 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2025-02-06 18:31:21,382 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 267 flow [2025-02-06 18:31:21,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:21,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:21,383 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:21,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:31:21,383 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:21,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1180561642, now seen corresponding path program 1 times [2025-02-06 18:31:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:21,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461534777] [2025-02-06 18:31:21,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:21,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:31:21,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:31:21,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:21,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-06 18:31:21,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461534777] [2025-02-06 18:31:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461534777] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:21,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:21,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431870434] [2025-02-06 18:31:21,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:21,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:21,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:21,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:21,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2025-02-06 18:31:21,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:21,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:21,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2025-02-06 18:31:21,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:22,271 INFO L124 PetriNetUnfolderBase]: 11409/19553 cut-off events. [2025-02-06 18:31:22,271 INFO L125 PetriNetUnfolderBase]: For 1246/1246 co-relation queries the response was YES. [2025-02-06 18:31:22,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36610 conditions, 19553 events. 11409/19553 cut-off events. For 1246/1246 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 152986 event pairs, 2489 based on Foata normal form. 396/19027 useless extension candidates. Maximal degree in co-relation 36527. Up to 13266 conditions per place. [2025-02-06 18:31:22,402 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 76 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2025-02-06 18:31:22,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 106 transitions, 476 flow [2025-02-06 18:31:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2025-02-06 18:31:22,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-02-06 18:31:22,403 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 267 flow. Second operand 3 states and 164 transitions. [2025-02-06 18:31:22,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 106 transitions, 476 flow [2025-02-06 18:31:22,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 106 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:31:22,406 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 265 flow [2025-02-06 18:31:22,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2025-02-06 18:31:22,408 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 15 predicate places. [2025-02-06 18:31:22,409 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 265 flow [2025-02-06 18:31:22,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:22,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:22,409 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:22,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 18:31:22,409 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:31:22,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1494457774, now seen corresponding path program 1 times [2025-02-06 18:31:22,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959938511] [2025-02-06 18:31:22,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:22,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:31:22,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:31:22,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:22,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:22,430 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:22,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:31:22,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:31:22,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:22,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:22,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:22,441 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:22,441 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2025-02-06 18:31:22,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2025-02-06 18:31:22,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2025-02-06 18:31:22,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2025-02-06 18:31:22,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2025-02-06 18:31:22,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2025-02-06 18:31:22,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2025-02-06 18:31:22,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2025-02-06 18:31:22,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-06 18:31:22,444 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:22,445 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:22,445 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-06 18:31:22,471 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:22,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 234 flow [2025-02-06 18:31:22,477 INFO L124 PetriNetUnfolderBase]: 9/114 cut-off events. [2025-02-06 18:31:22,478 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 18:31:22,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 114 events. 9/114 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 346 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 96. Up to 5 conditions per place. [2025-02-06 18:31:22,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 234 flow [2025-02-06 18:31:22,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 103 transitions, 234 flow [2025-02-06 18:31:22,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:22,481 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;@17e4af48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:22,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-02-06 18:31:22,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:22,482 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:31:22,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:22,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:22,482 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:31:22,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-06 18:31:22,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash 482735, now seen corresponding path program 1 times [2025-02-06 18:31:22,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:22,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788043441] [2025-02-06 18:31:22,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:22,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:22,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:31:22,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:31:22,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:22,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:22,500 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 18:31:22,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:22,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788043441] [2025-02-06 18:31:22,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788043441] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:22,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:31:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533875780] [2025-02-06 18:31:22,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:22,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:31:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:22,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:31:22,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:31:22,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 103 [2025-02-06 18:31:22,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 18:31:22,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:22,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 103 [2025-02-06 18:31:22,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:35,635 INFO L124 PetriNetUnfolderBase]: 173791/260014 cut-off events. [2025-02-06 18:31:35,635 INFO L125 PetriNetUnfolderBase]: For 14753/14753 co-relation queries the response was YES. [2025-02-06 18:31:36,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489305 conditions, 260014 events. 173791/260014 cut-off events. For 14753/14753 co-relation queries the response was YES. Maximal size of possible extension queue 8765. Compared 2311925 event pairs, 156660 based on Foata normal form. 17131/261771 useless extension candidates. Maximal degree in co-relation 85844. Up to 222110 conditions per place. [2025-02-06 18:31:37,043 INFO L140 encePairwiseOnDemand]: 92/103 looper letters, 55 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2025-02-06 18:31:37,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 344 flow [2025-02-06 18:31:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:31:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:31:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2025-02-06 18:31:37,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679611650485437 [2025-02-06 18:31:37,044 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 234 flow. Second operand 4 states and 234 transitions. [2025-02-06 18:31:37,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 344 flow [2025-02-06 18:31:37,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 338 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 18:31:37,050 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 242 flow [2025-02-06 18:31:37,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2025-02-06 18:31:37,051 INFO L279 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2025-02-06 18:31:37,051 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 242 flow [2025-02-06 18:31:37,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 18:31:37,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:37,051 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:31:37,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-06 18:31:37,051 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-06 18:31:37,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1496687338, now seen corresponding path program 1 times [2025-02-06 18:31:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233885345] [2025-02-06 18:31:37,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:37,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:37,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:37,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:37,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233885345] [2025-02-06 18:31:37,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233885345] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:31:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416133770] [2025-02-06 18:31:37,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:31:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:37,085 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 18:31:37,086 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 18:31:37,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:37,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:37,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:37,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:37,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:31:37,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:31:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:37,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:31:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416133770] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:37,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:31:37,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:31:37,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11200004] [2025-02-06 18:31:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:37,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:31:37,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:37,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:31:37,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:31:37,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 103 [2025-02-06 18:31:37,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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 18:31:37,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:37,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 103 [2025-02-06 18:31:37,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand