./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:41:49,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:41:49,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:41:50,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:41:50,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:41:50,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:41:50,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:41:50,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:41:50,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:41:50,026 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:41:50,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:41:50,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:41:50,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:41:50,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:41:50,028 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:41:50,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:41:50,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:41:50,028 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:41:50,029 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:41:50,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:50,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:41:50,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:41:50,030 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/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 -> 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 [2025-03-09 06:41:50,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:41:50,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:41:50,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:41:50,280 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:41:50,280 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:41:50,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2025-03-09 06:41:51,506 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26f112d4/dbb6857c233a4dc0a4838ac42e7c471f/FLAG1be04477d [2025-03-09 06:41:51,745 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:41:51,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2025-03-09 06:41:51,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26f112d4/dbb6857c233a4dc0a4838ac42e7c471f/FLAG1be04477d [2025-03-09 06:41:51,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26f112d4/dbb6857c233a4dc0a4838ac42e7c471f [2025-03-09 06:41:51,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:41:51,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:41:51,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:51,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:41:51,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:41:51,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:51,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3822980c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51, skipping insertion in model container [2025-03-09 06:41:51,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:51,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:41:51,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:51,947 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:41:51,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:51,990 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:41:51,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51 WrapperNode [2025-03-09 06:41:51,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:51,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:51,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:41:51,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:41:51,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,019 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2025-03-09 06:41:52,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:52,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:41:52,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:41:52,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:41:52,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,054 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2025-03-09 06:41:52,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:41:52,073 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:41:52,073 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:41:52,073 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:41:52,074 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (1/1) ... [2025-03-09 06:41:52,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:52,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:41:52,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:41:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:41:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:41:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:41:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:41:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:41:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:41:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 06:41:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:41:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:41:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:41:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:41:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:41:52,124 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:41:52,227 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:41:52,229 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:41:52,505 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:41:52,505 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:41:52,640 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:41:52,640 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:41:52,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:52 BoogieIcfgContainer [2025-03-09 06:41:52,642 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:41:52,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:41:52,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:41:52,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:41:52,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:41:51" (1/3) ... [2025-03-09 06:41:52,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce32b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:52, skipping insertion in model container [2025-03-09 06:41:52,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:51" (2/3) ... [2025-03-09 06:41:52,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce32b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:52, skipping insertion in model container [2025-03-09 06:41:52,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:52" (3/3) ... [2025-03-09 06:41:52,649 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2025-03-09 06:41:52,659 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:41:52,660 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-dec.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-03-09 06:41:52,661 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:41:52,720 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:41:52,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2025-03-09 06:41:52,788 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2025-03-09 06:41:52,791 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:41:52,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 237 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2025-03-09 06:41:52,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2025-03-09 06:41:52,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2025-03-09 06:41:52,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:41:52,820 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;@778b24fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:41:52,821 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-09 06:41:52,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:41:52,846 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2025-03-09 06:41:52,846 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:41:52,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:52,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:41:52,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:41:52,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 472635679, now seen corresponding path program 1 times [2025-03-09 06:41:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:52,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505293883] [2025-03-09 06:41:52,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:52,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:41:52,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:41:52,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:52,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:53,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:53,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505293883] [2025-03-09 06:41:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505293883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904975335] [2025-03-09 06:41:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:53,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:53,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:53,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:53,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:41:53,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2025-03-09 06:41:53,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:53,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:41:53,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:56,483 INFO L124 PetriNetUnfolderBase]: 37330/58506 cut-off events. [2025-03-09 06:41:56,483 INFO L125 PetriNetUnfolderBase]: For 1917/1917 co-relation queries the response was YES. [2025-03-09 06:41:56,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107878 conditions, 58506 events. 37330/58506 cut-off events. For 1917/1917 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475545 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 103409. Up to 47232 conditions per place. [2025-03-09 06:41:56,914 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2025-03-09 06:41:56,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 289 flow [2025-03-09 06:41:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2025-03-09 06:41:56,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2025-03-09 06:41:56,933 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 183 transitions. [2025-03-09 06:41:56,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 289 flow [2025-03-09 06:41:57,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-09 06:41:57,049 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2025-03-09 06:41:57,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2025-03-09 06:41:57,055 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-09 06:41:57,056 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2025-03-09 06:41:57,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2025-03-09 06:41:57,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:57,057 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:57,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:41:57,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:41:57,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1387110353, now seen corresponding path program 1 times [2025-03-09 06:41:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:57,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101680901] [2025-03-09 06:41:57,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:57,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:41:57,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:41:57,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:57,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:57,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:57,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101680901] [2025-03-09 06:41:57,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101680901] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:57,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260588339] [2025-03-09 06:41:57,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:57,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:57,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:57,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:57,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:41:57,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:41:57,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:41:57,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:57,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:57,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:57,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:57,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:57,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260588339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:57,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:41:57,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870779012] [2025-03-09 06:41:57,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:57,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:57,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:57,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:57,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:41:57,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:41:57,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2025-03-09 06:41:57,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:57,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:41:57,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:00,003 INFO L124 PetriNetUnfolderBase]: 37330/58505 cut-off events. [2025-03-09 06:42:00,003 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2025-03-09 06:42:00,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107345 conditions, 58505 events. 37330/58505 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475614 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 107318. Up to 47227 conditions per place. [2025-03-09 06:42:00,299 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 45 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2025-03-09 06:42:00,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 293 flow [2025-03-09 06:42:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:42:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:42:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2025-03-09 06:42:00,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2025-03-09 06:42:00,303 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 245 transitions. [2025-03-09 06:42:00,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 293 flow [2025-03-09 06:42:00,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:42:00,305 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2025-03-09 06:42:00,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2025-03-09 06:42:00,306 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2025-03-09 06:42:00,306 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2025-03-09 06:42:00,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2025-03-09 06:42:00,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:00,307 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:42:00,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:00,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:00,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:00,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:00,512 INFO L85 PathProgramCache]: Analyzing trace with hash 50748378, now seen corresponding path program 1 times [2025-03-09 06:42:00,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:00,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938744931] [2025-03-09 06:42:00,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:00,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:00,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:00,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:00,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:00,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:00,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938744931] [2025-03-09 06:42:00,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938744931] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678558580] [2025-03-09 06:42:00,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:00,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:00,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:00,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:00,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:42:00,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:00,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:00,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:00,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:00,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:00,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:00,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:00,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678558580] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:00,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:00,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:42:00,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944914239] [2025-03-09 06:42:00,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:00,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:42:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:00,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:42:00,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:42:00,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:00,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 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) [2025-03-09 06:42:00,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:00,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:00,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:03,420 INFO L124 PetriNetUnfolderBase]: 37333/58517 cut-off events. [2025-03-09 06:42:03,420 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2025-03-09 06:42:03,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107389 conditions, 58517 events. 37333/58517 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475621 event pairs, 27934 based on Foata normal form. 3/51059 useless extension candidates. Maximal degree in co-relation 107319. Up to 47234 conditions per place. [2025-03-09 06:42:03,752 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 48 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2025-03-09 06:42:03,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 376 flow [2025-03-09 06:42:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:42:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:42:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 384 transitions. [2025-03-09 06:42:03,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-03-09 06:42:03,755 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 384 transitions. [2025-03-09 06:42:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 376 flow [2025-03-09 06:42:03,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 330 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:03,762 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2025-03-09 06:42:03,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-03-09 06:42:03,763 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-03-09 06:42:03,763 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2025-03-09 06:42:03,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 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) [2025-03-09 06:42:03,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:03,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:03,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:42:03,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-09 06:42:03,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:03,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2142795597, now seen corresponding path program 1 times [2025-03-09 06:42:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17718440] [2025-03-09 06:42:03,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:03,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:42:03,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:42:03,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:03,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17718440] [2025-03-09 06:42:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17718440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:04,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579952483] [2025-03-09 06:42:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:04,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:04,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:04,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:04,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-09 06:42:04,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2025-03-09 06:42:04,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:04,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-09 06:42:04,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:06,656 INFO L124 PetriNetUnfolderBase]: 35048/51511 cut-off events. [2025-03-09 06:42:06,656 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2025-03-09 06:42:06,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97437 conditions, 51511 events. 35048/51511 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 373348 event pairs, 14967 based on Foata normal form. 0/46767 useless extension candidates. Maximal degree in co-relation 97403. Up to 26562 conditions per place. [2025-03-09 06:42:06,939 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 110 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2025-03-09 06:42:06,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 592 flow [2025-03-09 06:42:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2025-03-09 06:42:06,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-09 06:42:06,941 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 4 states and 238 transitions. [2025-03-09 06:42:06,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 142 transitions, 592 flow [2025-03-09 06:42:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 581 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:06,943 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 245 flow [2025-03-09 06:42:06,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2025-03-09 06:42:06,944 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-03-09 06:42:06,944 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 245 flow [2025-03-09 06:42:06,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2025-03-09 06:42:06,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:06,944 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:06,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:42:06,944 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:06,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2142795598, now seen corresponding path program 1 times [2025-03-09 06:42:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753846017] [2025-03-09 06:42:06,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:06,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:42:06,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:42:06,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:06,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:07,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:07,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753846017] [2025-03-09 06:42:07,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753846017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:07,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:07,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:07,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375198010] [2025-03-09 06:42:07,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:07,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:42:07,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:07,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:42:07,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:42:07,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-09 06:42:07,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2025-03-09 06:42:07,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:07,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-09 06:42:07,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:09,332 INFO L124 PetriNetUnfolderBase]: 33196/52285 cut-off events. [2025-03-09 06:42:09,333 INFO L125 PetriNetUnfolderBase]: For 3167/3167 co-relation queries the response was YES. [2025-03-09 06:42:09,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98951 conditions, 52285 events. 33196/52285 cut-off events. For 3167/3167 co-relation queries the response was YES. Maximal size of possible extension queue 1859. Compared 422068 event pairs, 24690 based on Foata normal form. 1/47432 useless extension candidates. Maximal degree in co-relation 98920. Up to 42015 conditions per place. [2025-03-09 06:42:09,645 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 56 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2025-03-09 06:42:09,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 358 flow [2025-03-09 06:42:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:42:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:42:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2025-03-09 06:42:09,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-03-09 06:42:09,646 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 245 flow. Second operand 3 states and 152 transitions. [2025-03-09 06:42:09,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 358 flow [2025-03-09 06:42:09,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:42:09,652 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 240 flow [2025-03-09 06:42:09,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2025-03-09 06:42:09,653 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2025-03-09 06:42:09,653 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 240 flow [2025-03-09 06:42:09,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2025-03-09 06:42:09,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:09,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:09,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:42:09,653 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:09,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1293543204, now seen corresponding path program 1 times [2025-03-09 06:42:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:09,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575959913] [2025-03-09 06:42:09,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:09,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:09,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:09,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:09,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:09,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575959913] [2025-03-09 06:42:09,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575959913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123133686] [2025-03-09 06:42:09,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:09,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:09,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:09,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:09,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:42:09,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:10,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:10,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:10,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:10,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-09 06:42:10,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:10,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:42:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:10,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:10,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-09 06:42:10,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:42:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123133686] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:10,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:10,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-03-09 06:42:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880834111] [2025-03-09 06:42:10,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:10,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:42:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:10,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:42:10,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:42:10,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-09 06:42:10,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 240 flow. Second operand has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 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) [2025-03-09 06:42:10,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:10,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-09 06:42:10,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:14,610 INFO L124 PetriNetUnfolderBase]: 60378/87480 cut-off events. [2025-03-09 06:42:14,611 INFO L125 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2025-03-09 06:42:14,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166102 conditions, 87480 events. 60378/87480 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 2403. Compared 644917 event pairs, 19296 based on Foata normal form. 0/81572 useless extension candidates. Maximal degree in co-relation 166078. Up to 34221 conditions per place. [2025-03-09 06:42:15,134 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 131 selfloop transitions, 14 changer transitions 0/174 dead transitions. [2025-03-09 06:42:15,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 716 flow [2025-03-09 06:42:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:42:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:42:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 443 transitions. [2025-03-09 06:42:15,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5859788359788359 [2025-03-09 06:42:15,138 INFO L175 Difference]: Start difference. First operand has 91 places, 87 transitions, 240 flow. Second operand 9 states and 443 transitions. [2025-03-09 06:42:15,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 716 flow [2025-03-09 06:42:15,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 174 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:15,141 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 300 flow [2025-03-09 06:42:15,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2025-03-09 06:42:15,142 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 16 predicate places. [2025-03-09 06:42:15,142 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 300 flow [2025-03-09 06:42:15,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 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) [2025-03-09 06:42:15,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:15,142 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:15,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:15,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:15,343 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:15,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1344475851, now seen corresponding path program 1 times [2025-03-09 06:42:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:15,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751115138] [2025-03-09 06:42:15,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:15,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:15,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:15,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:15,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:15,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:15,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751115138] [2025-03-09 06:42:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751115138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:15,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:42:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521176331] [2025-03-09 06:42:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:15,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:15,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:15,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:15,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:15,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2025-03-09 06:42:15,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:15,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:15,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:22,734 INFO L124 PetriNetUnfolderBase]: 97966/146656 cut-off events. [2025-03-09 06:42:22,734 INFO L125 PetriNetUnfolderBase]: For 46354/46354 co-relation queries the response was YES. [2025-03-09 06:42:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305959 conditions, 146656 events. 97966/146656 cut-off events. For 46354/46354 co-relation queries the response was YES. Maximal size of possible extension queue 4119. Compared 1216524 event pairs, 11073 based on Foata normal form. 2198/136984 useless extension candidates. Maximal degree in co-relation 305922. Up to 61986 conditions per place. [2025-03-09 06:42:23,875 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2025-03-09 06:42:23,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 188 transitions, 930 flow [2025-03-09 06:42:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:42:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:42:23,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2025-03-09 06:42:23,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-03-09 06:42:23,876 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 300 flow. Second operand 5 states and 292 transitions. [2025-03-09 06:42:23,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 188 transitions, 930 flow [2025-03-09 06:42:23,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 188 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:42:23,901 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 324 flow [2025-03-09 06:42:23,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2025-03-09 06:42:23,902 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2025-03-09 06:42:23,902 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 324 flow [2025-03-09 06:42:23,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2025-03-09 06:42:23,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:23,903 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2025-03-09 06:42:23,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:42:23,903 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:23,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1026340556, now seen corresponding path program 2 times [2025-03-09 06:42:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954765377] [2025-03-09 06:42:23,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:42:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:23,910 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-09 06:42:23,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-03-09 06:42:23,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:42:23,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:42:23,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954765377] [2025-03-09 06:42:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954765377] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593368203] [2025-03-09 06:42:23,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:42:23,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:23,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:23,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:42:24,021 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-09 06:42:24,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-03-09 06:42:24,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:42:24,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:24,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:42:24,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:42:24,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:42:24,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593368203] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:24,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:24,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-03-09 06:42:24,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186686066] [2025-03-09 06:42:24,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:24,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:42:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:24,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:42:24,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:42:24,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:24,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2025-03-09 06:42:24,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:24,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:24,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand