./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:52:43,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:52:43,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:52:43,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:52:43,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:52:43,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:52:43,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:52:43,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:52:43,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:52:43,979 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:52:43,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:52:43,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:52:43,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:52:43,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:52:43,979 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:52:43,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:52:43,980 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:52:43,980 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:52:43,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:52:43,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:52:43,981 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 -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2025-02-06 18:52:44,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:52:44,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:52:44,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:52:44,240 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:52:44,240 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:52:44,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-02-06 18:52:45,398 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca189f655/5f33ec9690be4535ab9a058d66cb2de8/FLAGb29c035c3 [2025-02-06 18:52:45,622 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:52:45,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-02-06 18:52:45,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca189f655/5f33ec9690be4535ab9a058d66cb2de8/FLAGb29c035c3 [2025-02-06 18:52:45,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca189f655/5f33ec9690be4535ab9a058d66cb2de8 [2025-02-06 18:52:45,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:52:45,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:52:45,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:52:45,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:52:45,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:52:45,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:52:45" (1/1) ... [2025-02-06 18:52:45,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7110a44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:45, skipping insertion in model container [2025-02-06 18:52:45,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:52:45" (1/1) ... [2025-02-06 18:52:45,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:52:46,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:52:46,140 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:52:46,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:52:46,178 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:52:46,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46 WrapperNode [2025-02-06 18:52:46,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:52:46,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:52:46,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:52:46,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:52:46,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,213 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2025-02-06 18:52:46,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:52:46,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:52:46,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:52:46,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:52:46,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,238 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 18:52:46,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,243 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:52:46,252 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:52:46,252 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:52:46,252 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:52:46,256 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (1/1) ... [2025-02-06 18:52:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:52:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:46,283 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 18:52:46,285 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 18:52:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:52:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:52:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:52:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:52:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:52:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:52:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:52:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:52:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:52:46,302 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 18:52:46,379 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:52:46,380 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:52:46,659 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:52:46,660 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:52:46,953 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:52:46,953 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:52:46,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:52:46 BoogieIcfgContainer [2025-02-06 18:52:46,954 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:52:46,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:52:46,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:52:46,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:52:46,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:52:45" (1/3) ... [2025-02-06 18:52:46,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454a53ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:52:46, skipping insertion in model container [2025-02-06 18:52:46,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:46" (2/3) ... [2025-02-06 18:52:46,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454a53ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:52:46, skipping insertion in model container [2025-02-06 18:52:46,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:52:46" (3/3) ... [2025-02-06 18:52:46,962 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2025-02-06 18:52:46,980 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:52:46,982 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 62 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-02-06 18:52:46,982 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:52:47,083 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:52:47,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2025-02-06 18:52:47,148 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2025-02-06 18:52:47,150 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:52:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 4/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 217 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2025-02-06 18:52:47,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2025-02-06 18:52:47,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 135 flow [2025-02-06 18:52:47,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:52:47,176 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;@15661b77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:52:47,176 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2025-02-06 18:52:47,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:52:47,182 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:52:47,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:52:47,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:47,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:52:47,183 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:47,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash 696622, now seen corresponding path program 1 times [2025-02-06 18:52:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:47,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547637821] [2025-02-06 18:52:47,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:47,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:52:47,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:52:47,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:47,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:47,406 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 18:52:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:47,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547637821] [2025-02-06 18:52:47,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547637821] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:47,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:47,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:52:47,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778157541] [2025-02-06 18:52:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:47,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:47,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:47,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:47,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-02-06 18:52:47,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 18:52:47,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:47,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-02-06 18:52:47,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:48,220 INFO L124 PetriNetUnfolderBase]: 2971/4905 cut-off events. [2025-02-06 18:52:48,220 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2025-02-06 18:52:48,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9346 conditions, 4905 events. 2971/4905 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 34373 event pairs, 2534 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 8829. Up to 4217 conditions per place. [2025-02-06 18:52:48,259 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 37 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2025-02-06 18:52:48,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2025-02-06 18:52:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2025-02-06 18:52:48,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2025-02-06 18:52:48,274 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 135 flow. Second operand 4 states and 125 transitions. [2025-02-06 18:52:48,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2025-02-06 18:52:48,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:52:48,286 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 143 flow [2025-02-06 18:52:48,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-02-06 18:52:48,292 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2025-02-06 18:52:48,292 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 143 flow [2025-02-06 18:52:48,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 18:52:48,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:48,293 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:52:48,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:52:48,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:48,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -721154580, now seen corresponding path program 1 times [2025-02-06 18:52:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226267803] [2025-02-06 18:52:48,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:48,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:48,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:52:48,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:52:48,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:48,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:48,420 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 18:52:48,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:48,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226267803] [2025-02-06 18:52:48,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226267803] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:48,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970488695] [2025-02-06 18:52:48,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:48,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:48,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:48,424 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 18:52:48,426 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 18:52:48,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:52:48,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:52:48,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:48,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:48,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:48,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:48,531 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 18:52:48,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:52:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970488695] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:48,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:52:48,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:52:48,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436950776] [2025-02-06 18:52:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:48,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:52:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:48,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:52:48,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:52:48,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-02-06 18:52:48,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 18:52:48,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:48,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-02-06 18:52:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:49,074 INFO L124 PetriNetUnfolderBase]: 2971/4904 cut-off events. [2025-02-06 18:52:49,074 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-02-06 18:52:49,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 4904 events. 2971/4904 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 34403 event pairs, 2534 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 9247. Up to 4212 conditions per place. [2025-02-06 18:52:49,110 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2025-02-06 18:52:49,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 219 flow [2025-02-06 18:52:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:52:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:52:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2025-02-06 18:52:49,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2025-02-06 18:52:49,112 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 143 flow. Second operand 6 states and 155 transitions. [2025-02-06 18:52:49,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 219 flow [2025-02-06 18:52:49,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:49,114 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 150 flow [2025-02-06 18:52:49,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2025-02-06 18:52:49,114 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2025-02-06 18:52:49,115 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 150 flow [2025-02-06 18:52:49,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 18:52:49,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:49,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:52:49,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:52:49,319 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 18:52:49,319 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash -718716887, now seen corresponding path program 1 times [2025-02-06 18:52:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746694691] [2025-02-06 18:52:49,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:49,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:52:49,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:52:49,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:49,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:49,432 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 18:52:49,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:49,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746694691] [2025-02-06 18:52:49,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746694691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:49,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:49,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:52:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624026266] [2025-02-06 18:52:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:49,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:52:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:49,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:52:49,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:49,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2025-02-06 18:52:49,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 18:52:49,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:49,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2025-02-06 18:52:49,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:50,146 INFO L124 PetriNetUnfolderBase]: 4377/7257 cut-off events. [2025-02-06 18:52:50,147 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-02-06 18:52:50,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13763 conditions, 7257 events. 4377/7257 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 52156 event pairs, 3263 based on Foata normal form. 0/4517 useless extension candidates. Maximal degree in co-relation 10358. Up to 4714 conditions per place. [2025-02-06 18:52:50,184 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 82 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2025-02-06 18:52:50,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 427 flow [2025-02-06 18:52:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2025-02-06 18:52:50,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784615384615385 [2025-02-06 18:52:50,186 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 150 flow. Second operand 5 states and 188 transitions. [2025-02-06 18:52:50,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 427 flow [2025-02-06 18:52:50,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 405 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-06 18:52:50,188 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 153 flow [2025-02-06 18:52:50,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2025-02-06 18:52:50,188 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2025-02-06 18:52:50,189 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 153 flow [2025-02-06 18:52:50,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 18:52:50,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:50,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:52:50,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:52:50,189 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:50,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -880954881, now seen corresponding path program 1 times [2025-02-06 18:52:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976121336] [2025-02-06 18:52:50,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:50,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:52:50,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:52:50,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:50,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976121336] [2025-02-06 18:52:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976121336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190805432] [2025-02-06 18:52:50,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:50,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:50,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:50,263 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 18:52:50,265 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 18:52:50,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:52:50,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:52:50,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:50,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:50,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:50,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:50,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:50,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190805432] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:50,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:50,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:52:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612744263] [2025-02-06 18:52:50,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:50,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:52:50,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:50,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:52:50,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:52:50,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-02-06 18:52:50,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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 18:52:50,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-02-06 18:52:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:51,051 INFO L124 PetriNetUnfolderBase]: 4026/6744 cut-off events. [2025-02-06 18:52:51,052 INFO L125 PetriNetUnfolderBase]: For 1219/1323 co-relation queries the response was YES. [2025-02-06 18:52:51,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13644 conditions, 6744 events. 4026/6744 cut-off events. For 1219/1323 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 49241 event pairs, 3468 based on Foata normal form. 3/4225 useless extension candidates. Maximal degree in co-relation 9607. Up to 5782 conditions per place. [2025-02-06 18:52:51,079 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2025-02-06 18:52:51,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 285 flow [2025-02-06 18:52:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:52:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:52:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2025-02-06 18:52:51,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3723076923076923 [2025-02-06 18:52:51,081 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 153 flow. Second operand 10 states and 242 transitions. [2025-02-06 18:52:51,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 285 flow [2025-02-06 18:52:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:51,083 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 222 flow [2025-02-06 18:52:51,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2025-02-06 18:52:51,084 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2025-02-06 18:52:51,084 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 222 flow [2025-02-06 18:52:51,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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 18:52:51,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:51,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:51,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:52:51,289 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 18:52:51,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:51,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash 751657040, now seen corresponding path program 1 times [2025-02-06 18:52:51,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:51,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142856059] [2025-02-06 18:52:51,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:51,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:51,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:52:51,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:52:51,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:51,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:51,404 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 18:52:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142856059] [2025-02-06 18:52:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142856059] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:51,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:51,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:52:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127563059] [2025-02-06 18:52:51,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:51,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:52:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:51,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:52:51,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:51,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2025-02-06 18:52:51,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 18:52:51,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:51,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2025-02-06 18:52:51,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:51,894 INFO L124 PetriNetUnfolderBase]: 3682/6177 cut-off events. [2025-02-06 18:52:51,894 INFO L125 PetriNetUnfolderBase]: For 775/937 co-relation queries the response was YES. [2025-02-06 18:52:51,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12234 conditions, 6177 events. 3682/6177 cut-off events. For 775/937 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 43149 event pairs, 3023 based on Foata normal form. 0/3827 useless extension candidates. Maximal degree in co-relation 12198. Up to 4743 conditions per place. [2025-02-06 18:52:51,923 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 5 changer transitions 2/99 dead transitions. [2025-02-06 18:52:51,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 469 flow [2025-02-06 18:52:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-02-06 18:52:51,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-02-06 18:52:51,925 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 222 flow. Second operand 5 states and 175 transitions. [2025-02-06 18:52:51,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 469 flow [2025-02-06 18:52:51,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 458 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:51,927 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 236 flow [2025-02-06 18:52:51,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2025-02-06 18:52:51,928 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2025-02-06 18:52:51,928 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 236 flow [2025-02-06 18:52:51,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 18:52:51,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:51,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:51,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:52:51,928 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:51,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash -486624595, now seen corresponding path program 1 times [2025-02-06 18:52:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:51,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40254015] [2025-02-06 18:52:51,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:51,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:51,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:51,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:51,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:51,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40254015] [2025-02-06 18:52:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40254015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:51,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:51,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:52:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965050516] [2025-02-06 18:52:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:51,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:51,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:51,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:51,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:51,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:52:52,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:52:52,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:52,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:52:52,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:52,753 INFO L124 PetriNetUnfolderBase]: 5012/8490 cut-off events. [2025-02-06 18:52:52,753 INFO L125 PetriNetUnfolderBase]: For 1451/1716 co-relation queries the response was YES. [2025-02-06 18:52:52,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17501 conditions, 8490 events. 5012/8490 cut-off events. For 1451/1716 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 64387 event pairs, 2213 based on Foata normal form. 0/5264 useless extension candidates. Maximal degree in co-relation 17463. Up to 3766 conditions per place. [2025-02-06 18:52:52,802 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 77 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2025-02-06 18:52:52,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 463 flow [2025-02-06 18:52:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2025-02-06 18:52:52,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6564102564102564 [2025-02-06 18:52:52,805 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 236 flow. Second operand 3 states and 128 transitions. [2025-02-06 18:52:52,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 463 flow [2025-02-06 18:52:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:52,810 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 253 flow [2025-02-06 18:52:52,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2025-02-06 18:52:52,813 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2025-02-06 18:52:52,813 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 253 flow [2025-02-06 18:52:52,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:52:52,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:52,813 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:52,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:52:52,814 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:52,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash -486624594, now seen corresponding path program 1 times [2025-02-06 18:52:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389176031] [2025-02-06 18:52:52,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:52,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:52,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:52,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:52,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:52,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389176031] [2025-02-06 18:52:52,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389176031] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:52,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:52,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:52:52,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791610276] [2025-02-06 18:52:52,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:52,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:52,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:52,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:52,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:52,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:52:52,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:52:52,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:52,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:52:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:53,511 INFO L124 PetriNetUnfolderBase]: 4866/8395 cut-off events. [2025-02-06 18:52:53,511 INFO L125 PetriNetUnfolderBase]: For 2598/2861 co-relation queries the response was YES. [2025-02-06 18:52:53,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18150 conditions, 8395 events. 4866/8395 cut-off events. For 2598/2861 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 63921 event pairs, 2213 based on Foata normal form. 144/5919 useless extension candidates. Maximal degree in co-relation 18111. Up to 3620 conditions per place. [2025-02-06 18:52:53,551 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 76 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2025-02-06 18:52:53,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 470 flow [2025-02-06 18:52:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2025-02-06 18:52:53,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2025-02-06 18:52:53,553 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 253 flow. Second operand 3 states and 127 transitions. [2025-02-06 18:52:53,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 470 flow [2025-02-06 18:52:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 96 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:53,559 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 249 flow [2025-02-06 18:52:53,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2025-02-06 18:52:53,559 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2025-02-06 18:52:53,559 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 249 flow [2025-02-06 18:52:53,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 18:52:53,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:53,560 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:53,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:52:53,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:53,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -486624598, now seen corresponding path program 1 times [2025-02-06 18:52:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:53,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668976687] [2025-02-06 18:52:53,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:53,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:53,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:53,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:53,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:53,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:53,744 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 18:52:53,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668976687] [2025-02-06 18:52:53,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668976687] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859217684] [2025-02-06 18:52:53,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:53,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:53,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:53,751 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 18:52:53,757 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 18:52:53,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:53,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:53,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:53,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:53,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 18:52:53,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:53,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:52:53,900 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 18:52:53,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:53,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-06 18:52:53,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-02-06 18:52:53,966 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 18:52:53,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859217684] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:53,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:53,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:52:53,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545815921] [2025-02-06 18:52:53,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:53,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:52:53,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:53,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:52:53,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:52:53,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:52:53,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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 18:52:53,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:53,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:52:53,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:54,734 INFO L124 PetriNetUnfolderBase]: 4866/8745 cut-off events. [2025-02-06 18:52:54,734 INFO L125 PetriNetUnfolderBase]: For 2552/2914 co-relation queries the response was YES. [2025-02-06 18:52:54,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18396 conditions, 8745 events. 4866/8745 cut-off events. For 2552/2914 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 70582 event pairs, 2012 based on Foata normal form. 0/6109 useless extension candidates. Maximal degree in co-relation 18357. Up to 2921 conditions per place. [2025-02-06 18:52:54,777 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 97 selfloop transitions, 16 changer transitions 1/131 dead transitions. [2025-02-06 18:52:54,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 621 flow [2025-02-06 18:52:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:52:54,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:52:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 274 transitions. [2025-02-06 18:52:54,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2025-02-06 18:52:54,778 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 249 flow. Second operand 8 states and 274 transitions. [2025-02-06 18:52:54,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 621 flow [2025-02-06 18:52:54,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 621 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:52:54,789 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 310 flow [2025-02-06 18:52:54,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2025-02-06 18:52:54,792 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2025-02-06 18:52:54,793 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 310 flow [2025-02-06 18:52:54,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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 18:52:54,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:54,793 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:54,800 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 18:52:54,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:54,994 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:54,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash -486624597, now seen corresponding path program 1 times [2025-02-06 18:52:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851927430] [2025-02-06 18:52:54,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:55,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:55,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:55,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:55,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:55,187 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 18:52:55,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:55,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851927430] [2025-02-06 18:52:55,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851927430] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:55,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304335964] [2025-02-06 18:52:55,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:55,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:55,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:55,190 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 18:52:55,192 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 18:52:55,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:55,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:55,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:55,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:55,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 18:52:55,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:55,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:52:55,313 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 18:52:55,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:55,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 18:52:55,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:52:55,361 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 18:52:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304335964] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:55,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-02-06 18:52:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853984191] [2025-02-06 18:52:55,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 18:52:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:55,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 18:52:55,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-06 18:52:55,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:52:55,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 310 flow. Second operand has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 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 18:52:55,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:55,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:52:55,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:56,101 INFO L124 PetriNetUnfolderBase]: 4512/7712 cut-off events. [2025-02-06 18:52:56,101 INFO L125 PetriNetUnfolderBase]: For 6576/6949 co-relation queries the response was YES. [2025-02-06 18:52:56,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19274 conditions, 7712 events. 4512/7712 cut-off events. For 6576/6949 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 56971 event pairs, 1382 based on Foata normal form. 146/5622 useless extension candidates. Maximal degree in co-relation 19231. Up to 2921 conditions per place. [2025-02-06 18:52:56,131 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 96 selfloop transitions, 16 changer transitions 1/130 dead transitions. [2025-02-06 18:52:56,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 668 flow [2025-02-06 18:52:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:52:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:52:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2025-02-06 18:52:56,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-02-06 18:52:56,133 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 310 flow. Second operand 8 states and 273 transitions. [2025-02-06 18:52:56,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 668 flow [2025-02-06 18:52:56,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 130 transitions, 639 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-02-06 18:52:56,137 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 309 flow [2025-02-06 18:52:56,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2025-02-06 18:52:56,138 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2025-02-06 18:52:56,138 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 309 flow [2025-02-06 18:52:56,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 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 18:52:56,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:56,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:56,144 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 18:52:56,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 18:52:56,339 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:56,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash 769498405, now seen corresponding path program 1 times [2025-02-06 18:52:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:56,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546257120] [2025-02-06 18:52:56,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:56,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:56,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:52:56,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:52:56,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:56,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:56,397 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 18:52:56,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:56,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546257120] [2025-02-06 18:52:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546257120] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:56,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:52:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814266886] [2025-02-06 18:52:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:56,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:52:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:56,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:52:56,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:52:56,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2025-02-06 18:52:56,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:56,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:56,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2025-02-06 18:52:56,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:57,003 INFO L124 PetriNetUnfolderBase]: 4769/7635 cut-off events. [2025-02-06 18:52:57,003 INFO L125 PetriNetUnfolderBase]: For 8585/9113 co-relation queries the response was YES. [2025-02-06 18:52:57,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19938 conditions, 7635 events. 4769/7635 cut-off events. For 8585/9113 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 52502 event pairs, 4132 based on Foata normal form. 0/5283 useless extension candidates. Maximal degree in co-relation 19896. Up to 6599 conditions per place. [2025-02-06 18:52:57,041 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 49 selfloop transitions, 2 changer transitions 22/89 dead transitions. [2025-02-06 18:52:57,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 511 flow [2025-02-06 18:52:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2025-02-06 18:52:57,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2025-02-06 18:52:57,042 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 309 flow. Second operand 5 states and 162 transitions. [2025-02-06 18:52:57,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 511 flow [2025-02-06 18:52:57,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:52:57,047 INFO L231 Difference]: Finished difference. Result has 91 places, 67 transitions, 276 flow [2025-02-06 18:52:57,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=91, PETRI_TRANSITIONS=67} [2025-02-06 18:52:57,048 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2025-02-06 18:52:57,048 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 67 transitions, 276 flow [2025-02-06 18:52:57,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:57,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:57,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:57,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:52:57,048 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:57,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:57,049 INFO L85 PathProgramCache]: Analyzing trace with hash 505223313, now seen corresponding path program 1 times [2025-02-06 18:52:57,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:57,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050961185] [2025-02-06 18:52:57,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:57,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:57,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:52:57,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:52:57,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:57,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050961185] [2025-02-06 18:52:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050961185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:57,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:57,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:52:57,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843132193] [2025-02-06 18:52:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:57,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:57,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:57,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:57,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-02-06 18:52:57,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 67 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:57,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:57,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-02-06 18:52:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:57,894 INFO L124 PetriNetUnfolderBase]: 5587/8777 cut-off events. [2025-02-06 18:52:57,894 INFO L125 PetriNetUnfolderBase]: For 6514/7040 co-relation queries the response was YES. [2025-02-06 18:52:57,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22277 conditions, 8777 events. 5587/8777 cut-off events. For 6514/7040 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 61695 event pairs, 3933 based on Foata normal form. 292/6447 useless extension candidates. Maximal degree in co-relation 22247. Up to 6433 conditions per place. [2025-02-06 18:52:57,931 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 92 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2025-02-06 18:52:57,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 110 transitions, 576 flow [2025-02-06 18:52:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-02-06 18:52:57,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2025-02-06 18:52:57,932 INFO L175 Difference]: Start difference. First operand has 91 places, 67 transitions, 276 flow. Second operand 4 states and 159 transitions. [2025-02-06 18:52:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 110 transitions, 576 flow [2025-02-06 18:52:57,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 538 flow, removed 17 selfloop flow, removed 7 redundant places. [2025-02-06 18:52:57,949 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 275 flow [2025-02-06 18:52:57,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2025-02-06 18:52:57,949 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2025-02-06 18:52:57,949 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 275 flow [2025-02-06 18:52:57,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:57,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:57,950 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:57,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:52:57,950 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:57,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash 454048337, now seen corresponding path program 1 times [2025-02-06 18:52:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222339082] [2025-02-06 18:52:57,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:57,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:52:57,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:52:57,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:57,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:58,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:58,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222339082] [2025-02-06 18:52:58,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222339082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:58,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:58,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:52:58,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255940770] [2025-02-06 18:52:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:58,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:58,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:58,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:58,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:52:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 18:52:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:52:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:58,641 INFO L124 PetriNetUnfolderBase]: 5773/9650 cut-off events. [2025-02-06 18:52:58,641 INFO L125 PetriNetUnfolderBase]: For 9858/9858 co-relation queries the response was YES. [2025-02-06 18:52:58,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24249 conditions, 9650 events. 5773/9650 cut-off events. For 9858/9858 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 72147 event pairs, 1694 based on Foata normal form. 0/6932 useless extension candidates. Maximal degree in co-relation 24215. Up to 5988 conditions per place. [2025-02-06 18:52:58,674 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 73 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2025-02-06 18:52:58,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 540 flow [2025-02-06 18:52:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2025-02-06 18:52:58,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2025-02-06 18:52:58,675 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 275 flow. Second operand 3 states and 126 transitions. [2025-02-06 18:52:58,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 540 flow [2025-02-06 18:52:58,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:58,679 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 294 flow [2025-02-06 18:52:58,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2025-02-06 18:52:58,679 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2025-02-06 18:52:58,679 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 294 flow [2025-02-06 18:52:58,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 18:52:58,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:58,679 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:58,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:52:58,680 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:52:58,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash 454048334, now seen corresponding path program 1 times [2025-02-06 18:52:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:58,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036284710] [2025-02-06 18:52:58,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:58,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:58,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:52:58,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:52:58,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:58,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:58,835 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 18:52:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036284710] [2025-02-06 18:52:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036284710] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962644380] [2025-02-06 18:52:58,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:58,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:58,838 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 18:52:58,844 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 18:52:58,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:52:58,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:52:58,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:58,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:58,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 18:52:58,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:58,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:52:58,951 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 18:52:58,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:58,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-06 18:52:58,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-02-06 18:52:59,004 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 18:52:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962644380] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:59,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:59,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:52:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655680505] [2025-02-06 18:52:59,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:59,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:52:59,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:59,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:52:59,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:52:59,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:52:59,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 294 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 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 18:52:59,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:59,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:52:59,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:00,025 INFO L124 PetriNetUnfolderBase]: 7770/13075 cut-off events. [2025-02-06 18:53:00,026 INFO L125 PetriNetUnfolderBase]: For 11257/11257 co-relation queries the response was YES. [2025-02-06 18:53:00,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34053 conditions, 13075 events. 7770/13075 cut-off events. For 11257/11257 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 103181 event pairs, 2108 based on Foata normal form. 0/10331 useless extension candidates. Maximal degree in co-relation 34017. Up to 4112 conditions per place. [2025-02-06 18:53:00,112 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 90 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2025-02-06 18:53:00,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 123 transitions, 739 flow [2025-02-06 18:53:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:53:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:53:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2025-02-06 18:53:00,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2025-02-06 18:53:00,114 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 294 flow. Second operand 8 states and 253 transitions. [2025-02-06 18:53:00,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 123 transitions, 739 flow [2025-02-06 18:53:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:00,122 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 366 flow [2025-02-06 18:53:00,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2025-02-06 18:53:00,122 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2025-02-06 18:53:00,123 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 366 flow [2025-02-06 18:53:00,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 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 18:53:00,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:00,123 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:00,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:53:00,323 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,SelfDestructingSolverStorable12 [2025-02-06 18:53:00,323 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:00,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash 454048335, now seen corresponding path program 1 times [2025-02-06 18:53:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:00,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54242528] [2025-02-06 18:53:00,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:00,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:53:00,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:53:00,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:00,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:00,491 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 18:53:00,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:00,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54242528] [2025-02-06 18:53:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54242528] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578213556] [2025-02-06 18:53:00,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:00,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:00,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:00,494 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 18:53:00,495 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 18:53:00,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:53:00,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:53:00,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:00,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:00,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 18:53:00,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:00,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:53:00,600 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 18:53:00,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:00,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 18:53:00,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:53:00,647 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 18:53:00,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578213556] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:00,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-02-06 18:53:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501486301] [2025-02-06 18:53:00,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:00,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 18:53:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:00,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 18:53:00,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-06 18:53:00,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-02-06 18:53:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 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 18:53:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-02-06 18:53:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:01,909 INFO L124 PetriNetUnfolderBase]: 7018/11767 cut-off events. [2025-02-06 18:53:01,910 INFO L125 PetriNetUnfolderBase]: For 14446/14446 co-relation queries the response was YES. [2025-02-06 18:53:01,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35158 conditions, 11767 events. 7018/11767 cut-off events. For 14446/14446 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 90151 event pairs, 2026 based on Foata normal form. 310/9541 useless extension candidates. Maximal degree in co-relation 35117. Up to 3906 conditions per place. [2025-02-06 18:53:01,998 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 89 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2025-02-06 18:53:01,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 786 flow [2025-02-06 18:53:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:53:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:53:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2025-02-06 18:53:01,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2025-02-06 18:53:01,999 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 366 flow. Second operand 8 states and 252 transitions. [2025-02-06 18:53:01,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 786 flow [2025-02-06 18:53:02,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 776 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:53:02,010 INFO L231 Difference]: Finished difference. Result has 95 places, 75 transitions, 382 flow [2025-02-06 18:53:02,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2025-02-06 18:53:02,011 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2025-02-06 18:53:02,011 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 382 flow [2025-02-06 18:53:02,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 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 18:53:02,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:02,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:02,018 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 18:53:02,211 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,SelfDestructingSolverStorable13 [2025-02-06 18:53:02,212 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:02,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1764622681, now seen corresponding path program 1 times [2025-02-06 18:53:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:02,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62224292] [2025-02-06 18:53:02,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:02,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:02,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:02,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:02,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:02,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:02,443 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 18:53:02,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62224292] [2025-02-06 18:53:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62224292] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900535478] [2025-02-06 18:53:02,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:02,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:02,445 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 18:53:02,446 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 18:53:02,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:02,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:02,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:02,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:02,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 18:53:02,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:02,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-06 18:53:02,773 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 18:53:02,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:03,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-06 18:53:03,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-06 18:53:03,045 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 18:53:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900535478] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:03,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:03,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-02-06 18:53:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132437872] [2025-02-06 18:53:03,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:03,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:53:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:03,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:53:03,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:53:03,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-02-06 18:53:03,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 382 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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 18:53:03,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:03,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-02-06 18:53:03,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:07,179 INFO L124 PetriNetUnfolderBase]: 28447/44320 cut-off events. [2025-02-06 18:53:07,179 INFO L125 PetriNetUnfolderBase]: For 70902/70902 co-relation queries the response was YES. [2025-02-06 18:53:07,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144123 conditions, 44320 events. 28447/44320 cut-off events. For 70902/70902 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 366596 event pairs, 10806 based on Foata normal form. 0/34011 useless extension candidates. Maximal degree in co-relation 144081. Up to 8965 conditions per place. [2025-02-06 18:53:07,509 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 284 selfloop transitions, 35 changer transitions 0/335 dead transitions. [2025-02-06 18:53:07,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 335 transitions, 2510 flow [2025-02-06 18:53:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:53:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:53:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 510 transitions. [2025-02-06 18:53:07,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2025-02-06 18:53:07,511 INFO L175 Difference]: Start difference. First operand has 95 places, 75 transitions, 382 flow. Second operand 15 states and 510 transitions. [2025-02-06 18:53:07,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 335 transitions, 2510 flow [2025-02-06 18:53:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 335 transitions, 2473 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:53:07,532 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 575 flow [2025-02-06 18:53:07,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=575, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2025-02-06 18:53:07,532 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 43 predicate places. [2025-02-06 18:53:07,532 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 575 flow [2025-02-06 18:53:07,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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 18:53:07,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:07,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:07,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:53:07,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:07,733 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:07,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1764622680, now seen corresponding path program 1 times [2025-02-06 18:53:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:07,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064442612] [2025-02-06 18:53:07,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:07,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:07,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:07,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:07,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:07,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:07,937 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 18:53:07,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064442612] [2025-02-06 18:53:07,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064442612] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311166826] [2025-02-06 18:53:07,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:07,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:07,946 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 18:53:07,947 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 18:53:08,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:08,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:08,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:08,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:08,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 18:53:08,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:08,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-06 18:53:08,241 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 18:53:08,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:08,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:53:08,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2025-02-06 18:53:08,467 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 18:53:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311166826] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:08,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:08,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-02-06 18:53:08,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006739969] [2025-02-06 18:53:08,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:08,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:53:08,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:08,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:53:08,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:53:08,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-02-06 18:53:08,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 575 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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 18:53:08,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:08,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-02-06 18:53:08,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:14,007 INFO L124 PetriNetUnfolderBase]: 27421/42952 cut-off events. [2025-02-06 18:53:14,007 INFO L125 PetriNetUnfolderBase]: For 71449/71449 co-relation queries the response was YES. [2025-02-06 18:53:14,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155381 conditions, 42952 events. 27421/42952 cut-off events. For 71449/71449 co-relation queries the response was YES. Maximal size of possible extension queue 2188. Compared 358382 event pairs, 10806 based on Foata normal form. 536/34735 useless extension candidates. Maximal degree in co-relation 155333. Up to 8845 conditions per place. [2025-02-06 18:53:14,406 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 282 selfloop transitions, 35 changer transitions 0/333 dead transitions. [2025-02-06 18:53:14,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 333 transitions, 2615 flow [2025-02-06 18:53:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:53:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:53:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 508 transitions. [2025-02-06 18:53:14,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521025641025641 [2025-02-06 18:53:14,407 INFO L175 Difference]: Start difference. First operand has 109 places, 101 transitions, 575 flow. Second operand 15 states and 508 transitions. [2025-02-06 18:53:14,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 333 transitions, 2615 flow [2025-02-06 18:53:14,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 333 transitions, 2606 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:53:14,626 INFO L231 Difference]: Finished difference. Result has 119 places, 101 transitions, 640 flow [2025-02-06 18:53:14,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=640, PETRI_PLACES=119, PETRI_TRANSITIONS=101} [2025-02-06 18:53:14,626 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 53 predicate places. [2025-02-06 18:53:14,626 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 101 transitions, 640 flow [2025-02-06 18:53:14,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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 18:53:14,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:14,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:14,633 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 18:53:14,827 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,SelfDestructingSolverStorable15 [2025-02-06 18:53:14,827 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:14,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:14,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1746188011, now seen corresponding path program 1 times [2025-02-06 18:53:14,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:14,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444970274] [2025-02-06 18:53:14,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:14,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:14,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:53:14,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:53:14,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:14,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:14,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444970274] [2025-02-06 18:53:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444970274] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:14,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:53:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403378202] [2025-02-06 18:53:14,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:14,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:14,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:14,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:14,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:14,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-02-06 18:53:14,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 101 transitions, 640 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:14,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:14,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-02-06 18:53:14,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:19,793 INFO L124 PetriNetUnfolderBase]: 31490/48647 cut-off events. [2025-02-06 18:53:19,793 INFO L125 PetriNetUnfolderBase]: For 97865/98901 co-relation queries the response was YES. [2025-02-06 18:53:20,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179847 conditions, 48647 events. 31490/48647 cut-off events. For 97865/98901 co-relation queries the response was YES. Maximal size of possible extension queue 2358. Compared 399570 event pairs, 16725 based on Foata normal form. 1868/42438 useless extension candidates. Maximal degree in co-relation 179798. Up to 31809 conditions per place. [2025-02-06 18:53:20,282 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 175 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2025-02-06 18:53:20,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 196 transitions, 1617 flow [2025-02-06 18:53:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-02-06 18:53:20,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2025-02-06 18:53:20,283 INFO L175 Difference]: Start difference. First operand has 119 places, 101 transitions, 640 flow. Second operand 4 states and 159 transitions. [2025-02-06 18:53:20,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 196 transitions, 1617 flow [2025-02-06 18:53:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1549 flow, removed 15 selfloop flow, removed 9 redundant places. [2025-02-06 18:53:20,660 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 625 flow [2025-02-06 18:53:20,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=625, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2025-02-06 18:53:20,661 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 49 predicate places. [2025-02-06 18:53:20,661 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 625 flow [2025-02-06 18:53:20,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:20,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:20,661 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:20,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:53:20,661 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:20,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:20,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1542966376, now seen corresponding path program 1 times [2025-02-06 18:53:20,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:20,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551556069] [2025-02-06 18:53:20,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:20,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:53:20,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:53:20,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:20,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:20,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551556069] [2025-02-06 18:53:20,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551556069] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:20,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650745804] [2025-02-06 18:53:20,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:20,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:20,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:20,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:20,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:53:20,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:53:20,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:53:20,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:20,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:20,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:53:20,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:20,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650745804] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:20,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:20,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-02-06 18:53:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297820954] [2025-02-06 18:53:20,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:20,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:53:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:20,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:53:20,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:53:21,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:53:21,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 625 flow. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 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 18:53:21,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:21,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:53:21,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:25,697 INFO L124 PetriNetUnfolderBase]: 28635/43486 cut-off events. [2025-02-06 18:53:25,697 INFO L125 PetriNetUnfolderBase]: For 97450/98783 co-relation queries the response was YES. [2025-02-06 18:53:25,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166340 conditions, 43486 events. 28635/43486 cut-off events. For 97450/98783 co-relation queries the response was YES. Maximal size of possible extension queue 1932. Compared 339076 event pairs, 20708 based on Foata normal form. 689/35563 useless extension candidates. Maximal degree in co-relation 166291. Up to 30864 conditions per place. [2025-02-06 18:53:26,074 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 201 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2025-02-06 18:53:26,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 232 transitions, 1830 flow [2025-02-06 18:53:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:53:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:53:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2025-02-06 18:53:26,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44769230769230767 [2025-02-06 18:53:26,075 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 625 flow. Second operand 10 states and 291 transitions. [2025-02-06 18:53:26,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 232 transitions, 1830 flow [2025-02-06 18:53:26,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 232 transitions, 1800 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:26,208 INFO L231 Difference]: Finished difference. Result has 126 places, 107 transitions, 705 flow [2025-02-06 18:53:26,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=705, PETRI_PLACES=126, PETRI_TRANSITIONS=107} [2025-02-06 18:53:26,208 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 60 predicate places. [2025-02-06 18:53:26,208 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 107 transitions, 705 flow [2025-02-06 18:53:26,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 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 18:53:26,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:26,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:26,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:53:26,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 18:53:26,409 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:26,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 709713166, now seen corresponding path program 1 times [2025-02-06 18:53:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:26,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420250289] [2025-02-06 18:53:26,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:26,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:26,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:53:26,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:53:26,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:26,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420250289] [2025-02-06 18:53:26,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420250289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:26,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:26,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:53:26,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131927242] [2025-02-06 18:53:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:26,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:53:26,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:26,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:53:26,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:53:26,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-02-06 18:53:26,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 107 transitions, 705 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 18:53:26,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:26,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-02-06 18:53:26,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:29,763 INFO L124 PetriNetUnfolderBase]: 24157/36295 cut-off events. [2025-02-06 18:53:29,763 INFO L125 PetriNetUnfolderBase]: For 91806/92981 co-relation queries the response was YES. [2025-02-06 18:53:29,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144836 conditions, 36295 events. 24157/36295 cut-off events. For 91806/92981 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 281392 event pairs, 4627 based on Foata normal form. 1311/31967 useless extension candidates. Maximal degree in co-relation 144780. Up to 20298 conditions per place. [2025-02-06 18:53:30,098 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 135 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2025-02-06 18:53:30,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 1449 flow [2025-02-06 18:53:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:53:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:53:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2025-02-06 18:53:30,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2025-02-06 18:53:30,099 INFO L175 Difference]: Start difference. First operand has 126 places, 107 transitions, 705 flow. Second operand 5 states and 167 transitions. [2025-02-06 18:53:30,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 1449 flow [2025-02-06 18:53:30,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 169 transitions, 1413 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:53:30,376 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 701 flow [2025-02-06 18:53:30,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=701, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2025-02-06 18:53:30,377 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 57 predicate places. [2025-02-06 18:53:30,377 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 701 flow [2025-02-06 18:53:30,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 18:53:30,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:30,377 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:53:30,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:53:30,377 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-06 18:53:30,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1876293507, now seen corresponding path program 2 times [2025-02-06 18:53:30,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681661476] [2025-02-06 18:53:30,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:30,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:53:30,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:53:30,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:53:30,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:53:30,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:30,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681661476] [2025-02-06 18:53:30,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681661476] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:30,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003015399] [2025-02-06 18:53:30,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:30,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:30,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:30,404 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 18:53:30,405 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 18:53:30,456 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:53:30,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:53:30,462 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:53:30,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:30,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:53:30,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:53:30,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:53:30,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003015399] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:30,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:30,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:53:30,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737373564] [2025-02-06 18:53:30,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:30,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:30,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:30,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:30,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:30,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-02-06 18:53:30,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 701 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:30,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:30,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-02-06 18:53:30,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand