./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-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-?-c00e63d-m [2025-02-06 18:53:54,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:53:54,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:53:54,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:53:54,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:53:54,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:53:54,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:53:54,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:53:54,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:53:54,481 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:53:54,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:53:54,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:53:54,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:53:54,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:53:54,483 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:53:54,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:53:54,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:53:54,483 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:53:54,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:53:54,484 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:53:54,485 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:54,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:53:54,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:53:54,486 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:53:54,486 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 [2025-02-06 18:53:54,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:53:54,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:53:54,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:53:54,798 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:53:54,799 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:53:54,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-02-06 18:53:56,089 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57636ccbf/ea7ba419ff5d4e8097bb4af25dea602d/FLAG1abddf23a [2025-02-06 18:53:56,344 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:53:56,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-02-06 18:53:56,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57636ccbf/ea7ba419ff5d4e8097bb4af25dea602d/FLAG1abddf23a [2025-02-06 18:53:56,660 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57636ccbf/ea7ba419ff5d4e8097bb4af25dea602d [2025-02-06 18:53:56,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:53:56,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:53:56,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:56,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:53:56,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:53:56,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36055fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56, skipping insertion in model container [2025-02-06 18:53:56,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:53:56,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:56,851 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:53:56,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:56,897 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:53:56,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56 WrapperNode [2025-02-06 18:53:56,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:56,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:56,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:53:56,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:53:56,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,930 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 263 [2025-02-06 18:53:56,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:56,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:53:56,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:53:56,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:53:56,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,958 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]. [2025-02-06 18:53:56,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,972 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:53:56,978 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:53:56,979 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:53:56,979 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:53:56,980 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (1/1) ... [2025-02-06 18:53:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:56,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:57,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:53:57,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:53:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:53:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:53:57,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:53:57,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:53:57,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 18:53:57,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:53:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:53:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:53:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:53:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:53:57,031 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:53:57,148 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:53:57,150 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:53:57,634 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:53:57,634 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:53:57,987 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:53:57,988 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:53:57,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:57 BoogieIcfgContainer [2025-02-06 18:53:57,988 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:53:57,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:53:57,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:53:57,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:53:57,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:53:56" (1/3) ... [2025-02-06 18:53:57,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa46e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:57, skipping insertion in model container [2025-02-06 18:53:57,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:56" (2/3) ... [2025-02-06 18:53:57,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa46e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:57, skipping insertion in model container [2025-02-06 18:53:57,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:57" (3/3) ... [2025-02-06 18:53:57,997 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2025-02-06 18:53:58,011 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:53:58,013 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. [2025-02-06 18:53:58,013 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:53:58,099 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 18:53:58,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2025-02-06 18:53:58,180 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2025-02-06 18:53:58,182 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 18:53:58,186 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. [2025-02-06 18:53:58,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2025-02-06 18:53:58,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2025-02-06 18:53:58,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:53:58,207 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;@7d1a18ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:53:58,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-02-06 18:53:58,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:53:58,211 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:53:58,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:53:58,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:58,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:53:58,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:53:58,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 738438, now seen corresponding path program 1 times [2025-02-06 18:53:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040518630] [2025-02-06 18:53:58,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:58,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:53:58,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:53:58,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:58,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:58,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:58,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040518630] [2025-02-06 18:53:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040518630] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:58,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:58,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430779502] [2025-02-06 18:53:58,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:58,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:58,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:58,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:58,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-06 18:53:58,519 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) [2025-02-06 18:53:58,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:58,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-06 18:53:58,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:02,214 INFO L124 PetriNetUnfolderBase]: 34047/45567 cut-off events. [2025-02-06 18:54:02,215 INFO L125 PetriNetUnfolderBase]: For 2157/2157 co-relation queries the response was YES. [2025-02-06 18:54:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92755 conditions, 45567 events. 34047/45567 cut-off events. For 2157/2157 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 285910 event pairs, 30634 based on Foata normal form. 2/31274 useless extension candidates. Maximal degree in co-relation 87374. Up to 44704 conditions per place. [2025-02-06 18:54:02,550 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 47 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2025-02-06 18:54:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 257 flow [2025-02-06 18:54:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2025-02-06 18:54:02,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2025-02-06 18:54:02,567 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 123 transitions. [2025-02-06 18:54:02,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 257 flow [2025-02-06 18:54:02,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 244 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-06 18:54:02,611 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 150 flow [2025-02-06 18:54:02,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2025-02-06 18:54:02,618 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2025-02-06 18:54:02,618 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 150 flow [2025-02-06 18:54:02,618 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) [2025-02-06 18:54:02,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:02,620 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 18:54:02,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:54:02,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:02,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash 22892267, now seen corresponding path program 1 times [2025-02-06 18:54:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470661915] [2025-02-06 18:54:02,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:02,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:02,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:54:02,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:54:02,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:02,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470661915] [2025-02-06 18:54:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470661915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:02,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439037570] [2025-02-06 18:54:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:02,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:02,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:02,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:02,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:02,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-06 18:54:02,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 150 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) [2025-02-06 18:54:02,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:02,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-06 18:54:02,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:05,512 INFO L124 PetriNetUnfolderBase]: 34049/45575 cut-off events. [2025-02-06 18:54:05,513 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2025-02-06 18:54:05,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92043 conditions, 45575 events. 34049/45575 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 285420 event pairs, 30634 based on Foata normal form. 2/31284 useless extension candidates. Maximal degree in co-relation 91995. Up to 44713 conditions per place. [2025-02-06 18:54:05,727 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 52 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2025-02-06 18:54:05,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 290 flow [2025-02-06 18:54:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2025-02-06 18:54:05,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2025-02-06 18:54:05,732 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 150 flow. Second operand 4 states and 125 transitions. [2025-02-06 18:54:05,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 290 flow [2025-02-06 18:54:05,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:05,736 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 194 flow [2025-02-06 18:54:05,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2025-02-06 18:54:05,737 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2025-02-06 18:54:05,737 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 194 flow [2025-02-06 18:54:05,737 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) [2025-02-06 18:54:05,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:05,738 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:54:05,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:54:05,739 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:05,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash -915546104, now seen corresponding path program 1 times [2025-02-06 18:54:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801281794] [2025-02-06 18:54:05,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:05,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:05,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:05,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:05,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:05,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801281794] [2025-02-06 18:54:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801281794] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942003674] [2025-02-06 18:54:05,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:05,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:05,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:54:05,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:54:05,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:54:05,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:05,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:05,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:54:05,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:06,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942003674] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:06,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:06,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-06 18:54:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10854110] [2025-02-06 18:54:06,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:06,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:54:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:06,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:54:06,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:54:06,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-06 18:54:06,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:06,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:06,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-06 18:54:06,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:08,419 INFO L124 PetriNetUnfolderBase]: 34055/45599 cut-off events. [2025-02-06 18:54:08,419 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2025-02-06 18:54:08,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92119 conditions, 45599 events. 34055/45599 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 285714 event pairs, 30634 based on Foata normal form. 0/31302 useless extension candidates. Maximal degree in co-relation 92006. Up to 44716 conditions per place. [2025-02-06 18:54:08,669 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 52 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2025-02-06 18:54:08,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 426 flow [2025-02-06 18:54:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:54:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:54:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2025-02-06 18:54:08,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3155844155844156 [2025-02-06 18:54:08,672 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 194 flow. Second operand 10 states and 243 transitions. [2025-02-06 18:54:08,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 426 flow [2025-02-06 18:54:08,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:54:08,676 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 356 flow [2025-02-06 18:54:08,676 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=10, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-02-06 18:54:08,677 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2025-02-06 18:54:08,678 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 356 flow [2025-02-06 18:54:08,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:08,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:08,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:08,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:54:08,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:08,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:08,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash -673839415, now seen corresponding path program 1 times [2025-02-06 18:54:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:08,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191325415] [2025-02-06 18:54:08,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:08,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:54:08,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:54:08,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:08,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:09,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191325415] [2025-02-06 18:54:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191325415] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789144887] [2025-02-06 18:54:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:09,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:09,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:09,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:09,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:09,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 356 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) [2025-02-06 18:54:09,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:09,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:09,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:11,663 INFO L124 PetriNetUnfolderBase]: 39412/52671 cut-off events. [2025-02-06 18:54:11,664 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-02-06 18:54:11,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106948 conditions, 52671 events. 39412/52671 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 2226. Compared 327593 event pairs, 35768 based on Foata normal form. 922/38750 useless extension candidates. Maximal degree in co-relation 106854. Up to 44731 conditions per place. [2025-02-06 18:54:12,006 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 107 selfloop transitions, 13 changer transitions 0/134 dead transitions. [2025-02-06 18:54:12,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 766 flow [2025-02-06 18:54:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-02-06 18:54:12,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2025-02-06 18:54:12,008 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 356 flow. Second operand 5 states and 193 transitions. [2025-02-06 18:54:12,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 766 flow [2025-02-06 18:54:12,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 672 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-02-06 18:54:12,013 INFO L231 Difference]: Finished difference. Result has 85 places, 99 transitions, 418 flow [2025-02-06 18:54:12,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=418, PETRI_PLACES=85, PETRI_TRANSITIONS=99} [2025-02-06 18:54:12,014 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-02-06 18:54:12,014 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 99 transitions, 418 flow [2025-02-06 18:54:12,014 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) [2025-02-06 18:54:12,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:12,014 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:12,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:54:12,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:12,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 972333004, now seen corresponding path program 1 times [2025-02-06 18:54:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:12,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911441809] [2025-02-06 18:54:12,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:12,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:12,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:12,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:12,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:12,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911441809] [2025-02-06 18:54:12,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911441809] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495024916] [2025-02-06 18:54:12,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:12,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:12,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:12,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:12,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:54:12,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:12,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:12,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:12,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:12,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:54:12,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:12,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:54:12,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495024916] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:12,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:54:12,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-06 18:54:12,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076026292] [2025-02-06 18:54:12,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:12,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:12,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:12,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 18:54:12,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:12,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 99 transitions, 418 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) [2025-02-06 18:54:12,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:12,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:12,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:14,277 INFO L124 PetriNetUnfolderBase]: 32539/44362 cut-off events. [2025-02-06 18:54:14,277 INFO L125 PetriNetUnfolderBase]: For 2623/2623 co-relation queries the response was YES. [2025-02-06 18:54:14,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91281 conditions, 44362 events. 32539/44362 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 1876. Compared 281926 event pairs, 29348 based on Foata normal form. 0/32827 useless extension candidates. Maximal degree in co-relation 91186. Up to 43087 conditions per place. [2025-02-06 18:54:14,779 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 82 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2025-02-06 18:54:14,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 97 transitions, 576 flow [2025-02-06 18:54:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2025-02-06 18:54:14,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2025-02-06 18:54:14,780 INFO L175 Difference]: Start difference. First operand has 85 places, 99 transitions, 418 flow. Second operand 3 states and 111 transitions. [2025-02-06 18:54:14,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 97 transitions, 576 flow [2025-02-06 18:54:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 97 transitions, 572 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:14,787 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 408 flow [2025-02-06 18:54:14,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2025-02-06 18:54:14,788 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2025-02-06 18:54:14,788 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 408 flow [2025-02-06 18:54:14,788 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) [2025-02-06 18:54:14,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:14,788 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:14,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:54:14,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:14,989 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:14,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1857213116, now seen corresponding path program 1 times [2025-02-06 18:54:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108478253] [2025-02-06 18:54:14,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:15,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:15,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:15,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:15,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:15,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:15,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108478253] [2025-02-06 18:54:15,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108478253] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:15,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:15,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:54:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930531646] [2025-02-06 18:54:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:15,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:15,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:15,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:15,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:15,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:15,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:15,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:15,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:17,411 INFO L124 PetriNetUnfolderBase]: 32417/44268 cut-off events. [2025-02-06 18:54:17,411 INFO L125 PetriNetUnfolderBase]: For 3142/3142 co-relation queries the response was YES. [2025-02-06 18:54:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91698 conditions, 44268 events. 32417/44268 cut-off events. For 3142/3142 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 275075 event pairs, 12522 based on Foata normal form. 797/34194 useless extension candidates. Maximal degree in co-relation 91682. Up to 30066 conditions per place. [2025-02-06 18:54:17,611 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 108 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2025-02-06 18:54:17,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 692 flow [2025-02-06 18:54:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2025-02-06 18:54:17,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5974025974025974 [2025-02-06 18:54:17,613 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 408 flow. Second operand 3 states and 138 transitions. [2025-02-06 18:54:17,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 692 flow [2025-02-06 18:54:17,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:17,617 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 411 flow [2025-02-06 18:54:17,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2025-02-06 18:54:17,617 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-02-06 18:54:17,618 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 411 flow [2025-02-06 18:54:17,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:17,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:17,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:17,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:54:17,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:17,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1854458215, now seen corresponding path program 1 times [2025-02-06 18:54:17,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:17,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639853356] [2025-02-06 18:54:17,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:17,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:17,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:17,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:17,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:17,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:17,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639853356] [2025-02-06 18:54:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639853356] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:17,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:17,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:17,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86771265] [2025-02-06 18:54:17,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:17,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:17,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:17,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:17,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:17,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:17,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:17,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:17,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:17,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:19,840 INFO L124 PetriNetUnfolderBase]: 26604/36533 cut-off events. [2025-02-06 18:54:19,840 INFO L125 PetriNetUnfolderBase]: For 3652/3652 co-relation queries the response was YES. [2025-02-06 18:54:19,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78396 conditions, 36533 events. 26604/36533 cut-off events. For 3652/3652 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 221511 event pairs, 24096 based on Foata normal form. 0/29432 useless extension candidates. Maximal degree in co-relation 78379. Up to 35456 conditions per place. [2025-02-06 18:54:20,008 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 77 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2025-02-06 18:54:20,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 97 transitions, 575 flow [2025-02-06 18:54:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-02-06 18:54:20,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2025-02-06 18:54:20,010 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 411 flow. Second operand 3 states and 109 transitions. [2025-02-06 18:54:20,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 97 transitions, 575 flow [2025-02-06 18:54:20,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 97 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:20,014 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 419 flow [2025-02-06 18:54:20,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2025-02-06 18:54:20,014 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-02-06 18:54:20,014 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 419 flow [2025-02-06 18:54:20,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:20,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:20,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:20,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:54:20,015 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:20,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1854458216, now seen corresponding path program 1 times [2025-02-06 18:54:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:20,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178053378] [2025-02-06 18:54:20,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:20,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:54:20,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:54:20,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:20,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:20,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178053378] [2025-02-06 18:54:20,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178053378] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:20,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:20,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:54:20,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811454383] [2025-02-06 18:54:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:20,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:20,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:20,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:20,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:20,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:20,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:20,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:20,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:20,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:21,524 INFO L124 PetriNetUnfolderBase]: 20791/28798 cut-off events. [2025-02-06 18:54:21,524 INFO L125 PetriNetUnfolderBase]: For 2933/2933 co-relation queries the response was YES. [2025-02-06 18:54:21,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61996 conditions, 28798 events. 20791/28798 cut-off events. For 2933/2933 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 169806 event pairs, 18775 based on Foata normal form. 0/24484 useless extension candidates. Maximal degree in co-relation 61979. Up to 27929 conditions per place. [2025-02-06 18:54:21,684 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 79 selfloop transitions, 1 changer transitions 2/96 dead transitions. [2025-02-06 18:54:21,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 581 flow [2025-02-06 18:54:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2025-02-06 18:54:21,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2025-02-06 18:54:21,686 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 419 flow. Second operand 3 states and 108 transitions. [2025-02-06 18:54:21,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 581 flow [2025-02-06 18:54:21,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:21,690 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 401 flow [2025-02-06 18:54:21,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2025-02-06 18:54:21,691 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-02-06 18:54:21,691 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 401 flow [2025-02-06 18:54:21,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:21,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:21,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:21,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:54:21,692 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:21,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1677253005, now seen corresponding path program 1 times [2025-02-06 18:54:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551770] [2025-02-06 18:54:21,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:21,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:21,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:54:21,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:54:21,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:21,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:21,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:21,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551770] [2025-02-06 18:54:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551770] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:21,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:21,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:54:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933881898] [2025-02-06 18:54:21,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:21,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:54:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:21,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:54:21,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:54:21,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:21,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:21,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:21,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:21,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:23,507 INFO L124 PetriNetUnfolderBase]: 19391/27326 cut-off events. [2025-02-06 18:54:23,507 INFO L125 PetriNetUnfolderBase]: For 2771/2771 co-relation queries the response was YES. [2025-02-06 18:54:23,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58219 conditions, 27326 events. 19391/27326 cut-off events. For 2771/2771 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 162055 event pairs, 8556 based on Foata normal form. 144/23663 useless extension candidates. Maximal degree in co-relation 58201. Up to 21928 conditions per place. [2025-02-06 18:54:23,642 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 95 selfloop transitions, 2 changer transitions 3/114 dead transitions. [2025-02-06 18:54:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 649 flow [2025-02-06 18:54:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:54:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:54:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2025-02-06 18:54:23,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2025-02-06 18:54:23,643 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 401 flow. Second operand 3 states and 127 transitions. [2025-02-06 18:54:23,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 649 flow [2025-02-06 18:54:23,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:23,647 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 414 flow [2025-02-06 18:54:23,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2025-02-06 18:54:23,649 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-02-06 18:54:23,650 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 414 flow [2025-02-06 18:54:23,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:54:23,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:23,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:23,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:54:23,651 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:23,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1890829201, now seen corresponding path program 1 times [2025-02-06 18:54:23,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:23,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76878414] [2025-02-06 18:54:23,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:23,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:23,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:54:23,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:54:23,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:23,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:23,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76878414] [2025-02-06 18:54:23,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76878414] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:23,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:23,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:23,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158669683] [2025-02-06 18:54:23,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:23,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:23,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:23,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:23,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-06 18:54:23,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 414 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) [2025-02-06 18:54:23,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:23,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-06 18:54:23,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:26,376 INFO L124 PetriNetUnfolderBase]: 31127/44084 cut-off events. [2025-02-06 18:54:26,376 INFO L125 PetriNetUnfolderBase]: For 7396/7396 co-relation queries the response was YES. [2025-02-06 18:54:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94709 conditions, 44084 events. 31127/44084 cut-off events. For 7396/7396 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 279506 event pairs, 11139 based on Foata normal form. 1014/36755 useless extension candidates. Maximal degree in co-relation 94689. Up to 18985 conditions per place. [2025-02-06 18:54:26,573 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 143 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2025-02-06 18:54:26,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 864 flow [2025-02-06 18:54:26,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2025-02-06 18:54:26,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2025-02-06 18:54:26,574 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 414 flow. Second operand 4 states and 175 transitions. [2025-02-06 18:54:26,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 864 flow [2025-02-06 18:54:26,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 157 transitions, 854 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-06 18:54:26,580 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 421 flow [2025-02-06 18:54:26,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2025-02-06 18:54:26,580 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2025-02-06 18:54:26,580 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 421 flow [2025-02-06 18:54:26,581 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) [2025-02-06 18:54:26,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:26,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:26,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:54:26,581 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:26,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1513837620, now seen corresponding path program 1 times [2025-02-06 18:54:26,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:26,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984242530] [2025-02-06 18:54:26,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:26,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:26,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:54:26,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:54:26,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:26,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:26,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984242530] [2025-02-06 18:54:26,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984242530] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:26,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:26,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:26,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835038792] [2025-02-06 18:54:26,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:26,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:54:26,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:26,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:54:26,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:54:26,652 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2025-02-06 18:54:26,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 421 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) [2025-02-06 18:54:26,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:26,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2025-02-06 18:54:26,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:28,511 INFO L124 PetriNetUnfolderBase]: 24303/34388 cut-off events. [2025-02-06 18:54:28,511 INFO L125 PetriNetUnfolderBase]: For 7598/7598 co-relation queries the response was YES. [2025-02-06 18:54:28,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79613 conditions, 34388 events. 24303/34388 cut-off events. For 7598/7598 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 208354 event pairs, 9062 based on Foata normal form. 1014/31127 useless extension candidates. Maximal degree in co-relation 79592. Up to 19374 conditions per place. [2025-02-06 18:54:28,680 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 139 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2025-02-06 18:54:28,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 861 flow [2025-02-06 18:54:28,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:54:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:54:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-02-06 18:54:28,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2025-02-06 18:54:28,681 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 421 flow. Second operand 5 states and 193 transitions. [2025-02-06 18:54:28,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 861 flow [2025-02-06 18:54:28,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 156 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:54:28,701 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 426 flow [2025-02-06 18:54:28,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2025-02-06 18:54:28,702 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2025-02-06 18:54:28,702 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 426 flow [2025-02-06 18:54:28,702 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) [2025-02-06 18:54:28,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:28,702 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:54:28,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:54:28,702 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:28,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -94518101, now seen corresponding path program 2 times [2025-02-06 18:54:28,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:28,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989605145] [2025-02-06 18:54:28,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:28,711 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:54:28,718 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:54:28,718 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:54:28,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:28,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:28,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989605145] [2025-02-06 18:54:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989605145] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773278759] [2025-02-06 18:54:28,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:54:28,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:28,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:28,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:28,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:54:28,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:54:28,820 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:54:28,821 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:54:28,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:28,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:54:28,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:28,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:54:28,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773278759] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:28,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:28,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:54:28,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674786910] [2025-02-06 18:54:28,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:28,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:28,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:28,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:28,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:28,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-06 18:54:28,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 426 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) [2025-02-06 18:54:28,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:28,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-06 18:54:28,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:30,895 INFO L124 PetriNetUnfolderBase]: 20539/28048 cut-off events. [2025-02-06 18:54:30,895 INFO L125 PetriNetUnfolderBase]: For 15206/16418 co-relation queries the response was YES. [2025-02-06 18:54:30,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68925 conditions, 28048 events. 20539/28048 cut-off events. For 15206/16418 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 157412 event pairs, 17392 based on Foata normal form. 1213/25712 useless extension candidates. Maximal degree in co-relation 68903. Up to 27262 conditions per place. [2025-02-06 18:54:31,029 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 67 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2025-02-06 18:54:31,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 582 flow [2025-02-06 18:54:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-02-06 18:54:31,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-02-06 18:54:31,031 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 426 flow. Second operand 4 states and 112 transitions. [2025-02-06 18:54:31,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 582 flow [2025-02-06 18:54:31,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 570 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:54:31,042 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 436 flow [2025-02-06 18:54:31,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2025-02-06 18:54:31,043 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-02-06 18:54:31,043 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 436 flow [2025-02-06 18:54:31,043 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) [2025-02-06 18:54:31,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:31,043 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-06 18:54:31,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:54:31,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:31,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:31,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1722911179, now seen corresponding path program 1 times [2025-02-06 18:54:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507082063] [2025-02-06 18:54:31,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:31,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:54:31,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:54:31,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:31,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:31,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507082063] [2025-02-06 18:54:31,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507082063] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144257828] [2025-02-06 18:54:31,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:31,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:31,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:31,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:54:31,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:54:31,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:54:31,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:31,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:31,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:54:31,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:54:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:31,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:54:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:54:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144257828] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:54:31,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:54:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:54:31,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368618106] [2025-02-06 18:54:31,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:54:31,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:54:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:31,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:54:31,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:54:31,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-02-06 18:54:31,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 436 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) [2025-02-06 18:54:31,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:31,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-02-06 18:54:31,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:33,514 INFO L124 PetriNetUnfolderBase]: 20557/28120 cut-off events. [2025-02-06 18:54:33,514 INFO L125 PetriNetUnfolderBase]: For 6986/8198 co-relation queries the response was YES. [2025-02-06 18:54:33,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64320 conditions, 28120 events. 20557/28120 cut-off events. For 6986/8198 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 157909 event pairs, 17392 based on Foata normal form. 1224/25789 useless extension candidates. Maximal degree in co-relation 64298. Up to 27258 conditions per place. [2025-02-06 18:54:33,638 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 51 selfloop transitions, 80 changer transitions 0/141 dead transitions. [2025-02-06 18:54:33,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 141 transitions, 1040 flow [2025-02-06 18:54:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:54:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:54:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 465 transitions. [2025-02-06 18:54:33,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2744982290436836 [2025-02-06 18:54:33,640 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 436 flow. Second operand 22 states and 465 transitions. [2025-02-06 18:54:33,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 141 transitions, 1040 flow [2025-02-06 18:54:33,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 141 transitions, 972 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:54:33,646 INFO L231 Difference]: Finished difference. Result has 111 places, 141 transitions, 932 flow [2025-02-06 18:54:33,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=932, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2025-02-06 18:54:33,646 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2025-02-06 18:54:33,646 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 932 flow [2025-02-06 18:54:33,647 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) [2025-02-06 18:54:33,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:33,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:33,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:54:33,847 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,SelfDestructingSolverStorable12 [2025-02-06 18:54:33,848 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:33,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1874999362, now seen corresponding path program 1 times [2025-02-06 18:54:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346056488] [2025-02-06 18:54:33,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:33,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:54:33,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:54:33,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:33,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346056488] [2025-02-06 18:54:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346056488] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:54:33,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:54:33,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:54:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236637923] [2025-02-06 18:54:33,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:54:33,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:54:33,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:54:33,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:54:33,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:54:33,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-02-06 18:54:33,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 932 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) [2025-02-06 18:54:33,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:54:33,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-02-06 18:54:33,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:54:36,249 INFO L124 PetriNetUnfolderBase]: 24786/34677 cut-off events. [2025-02-06 18:54:36,249 INFO L125 PetriNetUnfolderBase]: For 8809/10198 co-relation queries the response was YES. [2025-02-06 18:54:36,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78684 conditions, 34677 events. 24786/34677 cut-off events. For 8809/10198 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 207522 event pairs, 21140 based on Foata normal form. 1753/32810 useless extension candidates. Maximal degree in co-relation 78656. Up to 27311 conditions per place. [2025-02-06 18:54:36,445 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 116 selfloop transitions, 13 changer transitions 28/168 dead transitions. [2025-02-06 18:54:36,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 1321 flow [2025-02-06 18:54:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:54:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:54:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2025-02-06 18:54:36,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.512987012987013 [2025-02-06 18:54:36,446 INFO L175 Difference]: Start difference. First operand has 111 places, 141 transitions, 932 flow. Second operand 4 states and 158 transitions. [2025-02-06 18:54:36,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 1321 flow [2025-02-06 18:54:36,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 168 transitions, 1111 flow, removed 67 selfloop flow, removed 9 redundant places. [2025-02-06 18:54:36,455 INFO L231 Difference]: Finished difference. Result has 106 places, 140 transitions, 749 flow [2025-02-06 18:54:36,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=106, PETRI_TRANSITIONS=140} [2025-02-06 18:54:36,456 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2025-02-06 18:54:36,456 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 140 transitions, 749 flow [2025-02-06 18:54:36,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2025-02-06 18:54:36,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:54:36,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:54:36,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:54:36,456 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-02-06 18:54:36,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:54:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1884427320, now seen corresponding path program 1 times [2025-02-06 18:54:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:54:36,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534487746] [2025-02-06 18:54:36,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:54:36,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:54:36,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:54:36,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:54:36,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:54:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:54:36,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:54:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534487746] [2025-02-06 18:54:36,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534487746] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:54:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922589424] [2025-02-06 18:54:36,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:54:36,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:54:36,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:54:36,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:54:36,919 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