./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:13:20,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:13:21,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:13:21,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:13:21,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:13:21,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:13:21,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:13:21,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:13:21,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:13:21,042 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:13:21,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:13:21,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:13:21,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:13:21,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:13:21,043 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:13:21,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:13:21,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:13:21,043 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:13:21,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:13:21,045 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:13:21,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:13:21,045 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:13:21,045 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:13:21,045 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:13:21,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:21,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:13:21,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:13:21,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:13:21,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:13:21,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:13:21,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:13:21,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:13:21,047 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 -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2025-02-08 14:13:21,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:13:21,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:13:21,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:13:21,395 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:13:21,396 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:13:21,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-02-08 14:13:22,784 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7149a2a03/3c21ee35ffc240d881417a14626b04c8/FLAG309af00de [2025-02-08 14:13:23,079 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:13:23,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-02-08 14:13:23,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7149a2a03/3c21ee35ffc240d881417a14626b04c8/FLAG309af00de [2025-02-08 14:13:23,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7149a2a03/3c21ee35ffc240d881417a14626b04c8 [2025-02-08 14:13:23,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:13:23,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:13:23,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:23,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:13:23,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:13:23,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a747a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23, skipping insertion in model container [2025-02-08 14:13:23,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:13:23,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:23,386 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:13:23,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:23,452 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:13:23,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23 WrapperNode [2025-02-08 14:13:23,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:23,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:23,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:13:23,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:13:23,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,515 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 263 [2025-02-08 14:13:23,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:23,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:13:23,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:13:23,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:13:23,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,565 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 14:13:23,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:13:23,595 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:13:23,595 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:13:23,595 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:13:23,596 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (1/1) ... [2025-02-08 14:13:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:23,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:23,633 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) [2025-02-08 14:13:23,635 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 [2025-02-08 14:13:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:13:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:13:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:13:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:13:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:13:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:13:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:13:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:13:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:13:23,661 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:13:23,790 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:13:23,793 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:13:24,288 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:13:24,291 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:13:24,703 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:13:24,703 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:13:24,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:24 BoogieIcfgContainer [2025-02-08 14:13:24,704 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:13:24,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:13:24,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:13:24,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:13:24,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:13:23" (1/3) ... [2025-02-08 14:13:24,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cdcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:24, skipping insertion in model container [2025-02-08 14:13:24,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:23" (2/3) ... [2025-02-08 14:13:24,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cdcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:24, skipping insertion in model container [2025-02-08 14:13:24,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:24" (3/3) ... [2025-02-08 14:13:24,714 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2025-02-08 14:13:24,733 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:13:24,735 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons3.wvr.c that has 5 procedures, 72 locations, 1 initial locations, 5 loop locations, and 22 error locations. [2025-02-08 14:13:24,736 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:13:24,825 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:13:24,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2025-02-08 14:13:24,914 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2025-02-08 14:13:24,917 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:13:24,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 73 events. 6/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 245 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2025-02-08 14:13:24,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2025-02-08 14:13:24,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2025-02-08 14:13:24,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:13:24,949 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;@1831d2d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:13:24,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-02-08 14:13:24,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:13:24,953 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:13:24,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:13:24,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:24,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:13:24,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:24,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash 735459, now seen corresponding path program 1 times [2025-02-08 14:13:24,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733890397] [2025-02-08 14:13:24,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:25,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:13:25,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:13:25,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:25,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733890397] [2025-02-08 14:13:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733890397] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:25,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:25,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:25,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213759904] [2025-02-08 14:13:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:25,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:25,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:25,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-08 14:13:25,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:25,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:25,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-08 14:13:25,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:29,149 INFO L124 PetriNetUnfolderBase]: 34049/45577 cut-off events. [2025-02-08 14:13:29,150 INFO L125 PetriNetUnfolderBase]: For 2157/2157 co-relation queries the response was YES. [2025-02-08 14:13:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92773 conditions, 45577 events. 34049/45577 cut-off events. For 2157/2157 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 286042 event pairs, 30634 based on Foata normal form. 2/31282 useless extension candidates. Maximal degree in co-relation 87374. Up to 44715 conditions per place. [2025-02-08 14:13:29,548 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 54 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2025-02-08 14:13:29,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 289 flow [2025-02-08 14:13:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-02-08 14:13:29,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2025-02-08 14:13:29,567 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 133 transitions. [2025-02-08 14:13:29,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 289 flow [2025-02-08 14:13:29,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:13:29,623 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 202 flow [2025-02-08 14:13:29,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2025-02-08 14:13:29,632 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2025-02-08 14:13:29,632 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 202 flow [2025-02-08 14:13:29,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:29,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:29,633 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:13:29,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:13:29,633 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:29,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 435905193, now seen corresponding path program 1 times [2025-02-08 14:13:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146471260] [2025-02-08 14:13:29,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:29,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:29,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:29,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:29,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:29,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146471260] [2025-02-08 14:13:29,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146471260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18286564] [2025-02-08 14:13:29,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:29,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:29,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:29,810 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) [2025-02-08 14:13:29,812 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 [2025-02-08 14:13:29,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:29,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:29,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:29,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:29,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:29,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:29,955 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18286564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:29,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:13:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183883578] [2025-02-08 14:13:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:29,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:13:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:29,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:13:29,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:13:29,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-08 14:13:29,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:29,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:29,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-08 14:13:29,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:32,987 INFO L124 PetriNetUnfolderBase]: 34049/45575 cut-off events. [2025-02-08 14:13:32,987 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2025-02-08 14:13:33,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92056 conditions, 45575 events. 34049/45575 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 286178 event pairs, 30634 based on Foata normal form. 2/31283 useless extension candidates. Maximal degree in co-relation 92006. Up to 44705 conditions per place. [2025-02-08 14:13:33,432 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 47 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2025-02-08 14:13:33,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 312 flow [2025-02-08 14:13:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:13:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:13:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2025-02-08 14:13:33,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2025-02-08 14:13:33,435 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 202 flow. Second operand 6 states and 157 transitions. [2025-02-08 14:13:33,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 312 flow [2025-02-08 14:13:33,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:13:33,437 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 218 flow [2025-02-08 14:13:33,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2025-02-08 14:13:33,440 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2025-02-08 14:13:33,440 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 218 flow [2025-02-08 14:13:33,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:33,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:33,441 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:13:33,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:13:33,646 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 [2025-02-08 14:13:33,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:33,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash 628159781, now seen corresponding path program 1 times [2025-02-08 14:13:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280291623] [2025-02-08 14:13:33,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:33,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:33,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:33,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:33,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:33,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:33,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280291623] [2025-02-08 14:13:33,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280291623] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:33,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740890167] [2025-02-08 14:13:33,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:33,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:33,774 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) [2025-02-08 14:13:33,777 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 [2025-02-08 14:13:33,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:33,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:33,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:33,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:33,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:33,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:33,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:33,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740890167] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:33,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:33,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:13:33,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355890157] [2025-02-08 14:13:33,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:33,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:13:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:33,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:13:33,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:13:33,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-08 14:13:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-02-08 14:13:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-08 14:13:33,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:36,438 INFO L124 PetriNetUnfolderBase]: 34055/45599 cut-off events. [2025-02-08 14:13:36,438 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2025-02-08 14:13:36,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92150 conditions, 45599 events. 34055/45599 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 286334 event pairs, 30634 based on Foata normal form. 6/31310 useless extension candidates. Maximal degree in co-relation 92008. Up to 44716 conditions per place. [2025-02-08 14:13:36,659 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 52 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2025-02-08 14:13:36,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 486 flow [2025-02-08 14:13:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2025-02-08 14:13:36,662 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3155844155844156 [2025-02-08 14:13:36,662 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 218 flow. Second operand 10 states and 243 transitions. [2025-02-08 14:13:36,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 486 flow [2025-02-08 14:13:36,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:36,668 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 358 flow [2025-02-08 14:13:36,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-02-08 14:13:36,670 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2025-02-08 14:13:36,671 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 358 flow [2025-02-08 14:13:36,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-02-08 14:13:36,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:36,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:36,680 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 [2025-02-08 14:13:36,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:36,873 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:36,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1063798854, now seen corresponding path program 1 times [2025-02-08 14:13:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762911717] [2025-02-08 14:13:36,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:36,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:36,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:36,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:36,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762911717] [2025-02-08 14:13:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762911717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:37,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538946630] [2025-02-08 14:13:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:37,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:37,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:37,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:37,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:13:37,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2025-02-08 14:13:37,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:37,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:13:37,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:39,661 INFO L124 PetriNetUnfolderBase]: 39412/52671 cut-off events. [2025-02-08 14:13:39,661 INFO L125 PetriNetUnfolderBase]: For 541/541 co-relation queries the response was YES. [2025-02-08 14:13:39,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106943 conditions, 52671 events. 39412/52671 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 2250. Compared 328305 event pairs, 35768 based on Foata normal form. 922/38749 useless extension candidates. Maximal degree in co-relation 106847. Up to 44731 conditions per place. [2025-02-08 14:13:40,166 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 115 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2025-02-08 14:13:40,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 769 flow [2025-02-08 14:13:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2025-02-08 14:13:40,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5038961038961038 [2025-02-08 14:13:40,168 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 358 flow. Second operand 5 states and 194 transitions. [2025-02-08 14:13:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 769 flow [2025-02-08 14:13:40,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 735 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:40,172 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 373 flow [2025-02-08 14:13:40,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2025-02-08 14:13:40,173 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-02-08 14:13:40,173 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 373 flow [2025-02-08 14:13:40,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2025-02-08 14:13:40,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:40,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:40,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:13:40,174 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:40,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash -286816884, now seen corresponding path program 1 times [2025-02-08 14:13:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:40,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563788506] [2025-02-08 14:13:40,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:40,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:40,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:40,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:40,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563788506] [2025-02-08 14:13:40,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563788506] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414294318] [2025-02-08 14:13:40,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:40,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:40,346 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) [2025-02-08 14:13:40,349 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 [2025-02-08 14:13:40,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:40,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:40,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:40,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:40,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:40,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:40,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414294318] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-08 14:13:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855430743] [2025-02-08 14:13:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:40,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:40,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:40,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:13:40,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:13:40,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2025-02-08 14:13:40,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:40,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:13:40,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:42,743 INFO L124 PetriNetUnfolderBase]: 32539/45082 cut-off events. [2025-02-08 14:13:42,743 INFO L125 PetriNetUnfolderBase]: For 2616/2616 co-relation queries the response was YES. [2025-02-08 14:13:42,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92004 conditions, 45082 events. 32539/45082 cut-off events. For 2616/2616 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 295568 event pairs, 29348 based on Foata normal form. 0/33323 useless extension candidates. Maximal degree in co-relation 91909. Up to 43087 conditions per place. [2025-02-08 14:13:42,995 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 74 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2025-02-08 14:13:42,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 515 flow [2025-02-08 14:13:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2025-02-08 14:13:42,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2025-02-08 14:13:42,996 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 373 flow. Second operand 3 states and 111 transitions. [2025-02-08 14:13:42,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 515 flow [2025-02-08 14:13:42,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 511 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:43,000 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 363 flow [2025-02-08 14:13:43,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2025-02-08 14:13:43,000 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-02-08 14:13:43,001 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 363 flow [2025-02-08 14:13:43,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2025-02-08 14:13:43,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:43,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:43,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:13:43,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:43,204 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:43,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:43,205 INFO L85 PathProgramCache]: Analyzing trace with hash 598063228, now seen corresponding path program 1 times [2025-02-08 14:13:43,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:43,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669690182] [2025-02-08 14:13:43,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:43,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:43,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:43,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:43,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:43,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669690182] [2025-02-08 14:13:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669690182] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:43,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:43,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795847482] [2025-02-08 14:13:43,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:43,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:43,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:43,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:43,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:13:43,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:43,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:43,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:13:43,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:45,567 INFO L124 PetriNetUnfolderBase]: 32417/44268 cut-off events. [2025-02-08 14:13:45,568 INFO L125 PetriNetUnfolderBase]: For 3135/3135 co-relation queries the response was YES. [2025-02-08 14:13:45,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91701 conditions, 44268 events. 32417/44268 cut-off events. For 3135/3135 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 275452 event pairs, 12522 based on Foata normal form. 797/34192 useless extension candidates. Maximal degree in co-relation 91685. Up to 30066 conditions per place. [2025-02-08 14:13:45,837 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 100 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2025-02-08 14:13:45,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 631 flow [2025-02-08 14:13:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2025-02-08 14:13:45,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5974025974025974 [2025-02-08 14:13:45,838 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 363 flow. Second operand 3 states and 138 transitions. [2025-02-08 14:13:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 631 flow [2025-02-08 14:13:45,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:45,843 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 366 flow [2025-02-08 14:13:45,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2025-02-08 14:13:45,844 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-02-08 14:13:45,844 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 366 flow [2025-02-08 14:13:45,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:45,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:45,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:45,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:13:45,846 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:45,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash 595308327, now seen corresponding path program 1 times [2025-02-08 14:13:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:45,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007160396] [2025-02-08 14:13:45,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:45,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:45,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:45,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:45,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:45,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007160396] [2025-02-08 14:13:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007160396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:45,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:45,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260071892] [2025-02-08 14:13:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:45,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:45,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:45,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:45,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:13:45,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:45,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:45,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:13:45,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:47,968 INFO L124 PetriNetUnfolderBase]: 26604/36533 cut-off events. [2025-02-08 14:13:47,969 INFO L125 PetriNetUnfolderBase]: For 3645/3645 co-relation queries the response was YES. [2025-02-08 14:13:48,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78399 conditions, 36533 events. 26604/36533 cut-off events. For 3645/3645 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 221839 event pairs, 24096 based on Foata normal form. 0/29430 useless extension candidates. Maximal degree in co-relation 78382. Up to 35456 conditions per place. [2025-02-08 14:13:48,198 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 69 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2025-02-08 14:13:48,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 514 flow [2025-02-08 14:13:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-02-08 14:13:48,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2025-02-08 14:13:48,200 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 366 flow. Second operand 3 states and 109 transitions. [2025-02-08 14:13:48,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 514 flow [2025-02-08 14:13:48,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:48,204 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 374 flow [2025-02-08 14:13:48,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2025-02-08 14:13:48,205 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-02-08 14:13:48,205 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 374 flow [2025-02-08 14:13:48,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:48,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:48,205 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:48,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:13:48,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:48,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash 595308328, now seen corresponding path program 1 times [2025-02-08 14:13:48,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:48,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344977523] [2025-02-08 14:13:48,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:48,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:48,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:48,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:48,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:48,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:48,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:48,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344977523] [2025-02-08 14:13:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344977523] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349489124] [2025-02-08 14:13:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:48,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:48,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:48,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:48,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:48,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:13:48,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:48,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:48,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:13:48,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:50,061 INFO L124 PetriNetUnfolderBase]: 20791/28798 cut-off events. [2025-02-08 14:13:50,061 INFO L125 PetriNetUnfolderBase]: For 2926/2926 co-relation queries the response was YES. [2025-02-08 14:13:50,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61999 conditions, 28798 events. 20791/28798 cut-off events. For 2926/2926 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 169953 event pairs, 18775 based on Foata normal form. 0/24484 useless extension candidates. Maximal degree in co-relation 61982. Up to 27929 conditions per place. [2025-02-08 14:13:50,217 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 71 selfloop transitions, 1 changer transitions 2/88 dead transitions. [2025-02-08 14:13:50,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 520 flow [2025-02-08 14:13:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2025-02-08 14:13:50,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2025-02-08 14:13:50,218 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 374 flow. Second operand 3 states and 108 transitions. [2025-02-08 14:13:50,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 520 flow [2025-02-08 14:13:50,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:50,221 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 356 flow [2025-02-08 14:13:50,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2025-02-08 14:13:50,222 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-02-08 14:13:50,222 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 356 flow [2025-02-08 14:13:50,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:50,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:50,222 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:50,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:13:50,222 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:50,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash -539517997, now seen corresponding path program 1 times [2025-02-08 14:13:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:50,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653095536] [2025-02-08 14:13:50,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:50,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:13:50,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:13:50,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:50,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:50,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653095536] [2025-02-08 14:13:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653095536] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47499738] [2025-02-08 14:13:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:50,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:50,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:50,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:50,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:50,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:13:50,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 356 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) [2025-02-08 14:13:50,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:50,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:13:50,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:52,038 INFO L124 PetriNetUnfolderBase]: 19391/27326 cut-off events. [2025-02-08 14:13:52,039 INFO L125 PetriNetUnfolderBase]: For 2764/2764 co-relation queries the response was YES. [2025-02-08 14:13:52,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58222 conditions, 27326 events. 19391/27326 cut-off events. For 2764/2764 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 162081 event pairs, 8556 based on Foata normal form. 144/23661 useless extension candidates. Maximal degree in co-relation 58204. Up to 21928 conditions per place. [2025-02-08 14:13:52,199 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 87 selfloop transitions, 2 changer transitions 3/106 dead transitions. [2025-02-08 14:13:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 588 flow [2025-02-08 14:13:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2025-02-08 14:13:52,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2025-02-08 14:13:52,200 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 356 flow. Second operand 3 states and 127 transitions. [2025-02-08 14:13:52,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 588 flow [2025-02-08 14:13:52,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 106 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:52,202 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 369 flow [2025-02-08 14:13:52,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2025-02-08 14:13:52,203 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2025-02-08 14:13:52,203 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 369 flow [2025-02-08 14:13:52,203 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) [2025-02-08 14:13:52,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:52,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:52,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:13:52,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:52,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash -753094193, now seen corresponding path program 1 times [2025-02-08 14:13:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:52,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580178546] [2025-02-08 14:13:52,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:52,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:13:52,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:13:52,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:52,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:52,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580178546] [2025-02-08 14:13:52,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580178546] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:52,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:52,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:52,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817143321] [2025-02-08 14:13:52,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:52,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:52,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:52,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:52,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-08 14:13:52,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-02-08 14:13:52,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:52,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-08 14:13:52,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:55,014 INFO L124 PetriNetUnfolderBase]: 31127/44084 cut-off events. [2025-02-08 14:13:55,015 INFO L125 PetriNetUnfolderBase]: For 7389/7389 co-relation queries the response was YES. [2025-02-08 14:13:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94712 conditions, 44084 events. 31127/44084 cut-off events. For 7389/7389 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 279420 event pairs, 11139 based on Foata normal form. 1014/36753 useless extension candidates. Maximal degree in co-relation 94692. Up to 18985 conditions per place. [2025-02-08 14:13:55,223 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 135 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2025-02-08 14:13:55,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 803 flow [2025-02-08 14:13:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2025-02-08 14:13:55,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2025-02-08 14:13:55,224 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 369 flow. Second operand 4 states and 175 transitions. [2025-02-08 14:13:55,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 803 flow [2025-02-08 14:13:55,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 793 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:55,230 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 376 flow [2025-02-08 14:13:55,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2025-02-08 14:13:55,231 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2025-02-08 14:13:55,231 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 376 flow [2025-02-08 14:13:55,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-02-08 14:13:55,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:55,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:55,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:13:55,232 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:55,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:55,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1871082799, now seen corresponding path program 1 times [2025-02-08 14:13:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709635022] [2025-02-08 14:13:55,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:55,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:13:55,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:13:55,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:55,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:55,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:55,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709635022] [2025-02-08 14:13:55,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709635022] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:55,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:55,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340186812] [2025-02-08 14:13:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:55,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:55,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:55,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:13:55,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2025-02-08 14:13:55,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2025-02-08 14:13:55,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:55,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2025-02-08 14:13:55,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:57,328 INFO L124 PetriNetUnfolderBase]: 24303/34964 cut-off events. [2025-02-08 14:13:57,329 INFO L125 PetriNetUnfolderBase]: For 7407/7407 co-relation queries the response was YES. [2025-02-08 14:13:57,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80384 conditions, 34964 events. 24303/34964 cut-off events. For 7407/7407 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 219443 event pairs, 7627 based on Foata normal form. 1014/31509 useless extension candidates. Maximal degree in co-relation 80363. Up to 19374 conditions per place. [2025-02-08 14:13:57,542 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 131 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2025-02-08 14:13:57,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 148 transitions, 800 flow [2025-02-08 14:13:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-02-08 14:13:57,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2025-02-08 14:13:57,544 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 376 flow. Second operand 5 states and 193 transitions. [2025-02-08 14:13:57,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 148 transitions, 800 flow [2025-02-08 14:13:57,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 148 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:57,591 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 381 flow [2025-02-08 14:13:57,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2025-02-08 14:13:57,592 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2025-02-08 14:13:57,592 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 381 flow [2025-02-08 14:13:57,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2025-02-08 14:13:57,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:57,592 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:13:57,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:13:57,593 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:57,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1947835989, now seen corresponding path program 2 times [2025-02-08 14:13:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:57,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920335878] [2025-02-08 14:13:57,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:57,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:57,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:13:57,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:57,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920335878] [2025-02-08 14:13:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920335878] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664481499] [2025-02-08 14:13:57,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:57,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:57,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:57,650 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) [2025-02-08 14:13:57,652 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 [2025-02-08 14:13:57,710 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:57,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:13:57,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:57,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:57,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:13:57,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:57,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664481499] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:57,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:57,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:13:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913915609] [2025-02-08 14:13:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:57,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:57,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:57,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:57,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-08 14:13:57,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-02-08 14:13:57,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:57,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-08 14:13:57,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:59,356 INFO L124 PetriNetUnfolderBase]: 20539/28048 cut-off events. [2025-02-08 14:13:59,356 INFO L125 PetriNetUnfolderBase]: For 15199/16411 co-relation queries the response was YES. [2025-02-08 14:13:59,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68928 conditions, 28048 events. 20539/28048 cut-off events. For 15199/16411 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 157272 event pairs, 17392 based on Foata normal form. 1213/25710 useless extension candidates. Maximal degree in co-relation 68906. Up to 27262 conditions per place. [2025-02-08 14:13:59,509 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 59 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2025-02-08 14:13:59,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 521 flow [2025-02-08 14:13:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-02-08 14:13:59,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-02-08 14:13:59,510 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 381 flow. Second operand 4 states and 112 transitions. [2025-02-08 14:13:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 521 flow [2025-02-08 14:13:59,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 509 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:13:59,518 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 391 flow [2025-02-08 14:13:59,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2025-02-08 14:13:59,519 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2025-02-08 14:13:59,519 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 391 flow [2025-02-08 14:13:59,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-02-08 14:13:59,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:59,520 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-08 14:13:59,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:13:59,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 14:13:59,720 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:13:59,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 104631496, now seen corresponding path program 1 times [2025-02-08 14:13:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499434475] [2025-02-08 14:13:59,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:59,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:13:59,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:13:59,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:59,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499434475] [2025-02-08 14:13:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499434475] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:59,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130234258] [2025-02-08 14:13:59,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:59,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:59,888 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) [2025-02-08 14:13:59,890 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 [2025-02-08 14:13:59,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:13:59,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:13:59,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:59,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:59,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 14:13:59,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:14:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:00,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:00,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130234258] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:00,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:00,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 14:14:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010722157] [2025-02-08 14:14:00,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:00,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:14:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:00,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:14:00,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:14:00,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-08 14:14:00,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 391 flow. Second operand has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 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) [2025-02-08 14:14:00,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:00,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-08 14:14:00,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:14:02,429 INFO L124 PetriNetUnfolderBase]: 20557/28120 cut-off events. [2025-02-08 14:14:02,429 INFO L125 PetriNetUnfolderBase]: For 6983/8195 co-relation queries the response was YES. [2025-02-08 14:14:02,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64323 conditions, 28120 events. 20557/28120 cut-off events. For 6983/8195 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 158143 event pairs, 17392 based on Foata normal form. 1224/25775 useless extension candidates. Maximal degree in co-relation 64301. Up to 27258 conditions per place. [2025-02-08 14:14:02,627 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 49 selfloop transitions, 62 changer transitions 0/121 dead transitions. [2025-02-08 14:14:02,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 883 flow [2025-02-08 14:14:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 14:14:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 14:14:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 465 transitions. [2025-02-08 14:14:02,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2744982290436836 [2025-02-08 14:14:02,629 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 391 flow. Second operand 22 states and 465 transitions. [2025-02-08 14:14:02,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 883 flow [2025-02-08 14:14:02,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 121 transitions, 815 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:14:02,636 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 763 flow [2025-02-08 14:14:02,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=763, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2025-02-08 14:14:02,637 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2025-02-08 14:14:02,637 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 763 flow [2025-02-08 14:14:02,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 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) [2025-02-08 14:14:02,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:14:02,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:14:02,645 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 [2025-02-08 14:14:02,842 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 [2025-02-08 14:14:02,842 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-08 14:14:02,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:14:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2031353626, now seen corresponding path program 1 times [2025-02-08 14:14:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:14:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732590842] [2025-02-08 14:14:02,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:14:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:14:02,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:14:02,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:14:02,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:14:02,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:14:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:14:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:14:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732590842] [2025-02-08 14:14:02,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732590842] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:14:02,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:14:02,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:14:02,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673209557] [2025-02-08 14:14:02,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:14:02,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:14:02,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:02,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:14:02,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:14:02,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-08 14:14:02,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 763 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:02,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:02,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-08 14:14:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand