./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 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-counter-fun.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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:44:15,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:44:16,024 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:44:16,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:44:16,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:44:16,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:44:16,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:44:16,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:44:16,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:44:16,045 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:44:16,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:44:16,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:44:16,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:44:16,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:44:16,046 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:44:16,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:44:16,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:44:16,046 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:44:16,047 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:44:16,048 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:16,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:44:16,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:44:16,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:44:16,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:44:16,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:44:16,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:44:16,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:44:16,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:44:16,049 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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2025-03-17 19:44:16,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:44:16,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:44:16,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:44:16,295 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:44:16,295 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:44:16,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-03-17 19:44:17,473 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff9d5a2fd/8ed749e1e72f4be2b979af3553ed1ad8/FLAG48c978a01 [2025-03-17 19:44:17,698 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:44:17,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-03-17 19:44:17,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff9d5a2fd/8ed749e1e72f4be2b979af3553ed1ad8/FLAG48c978a01 [2025-03-17 19:44:17,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff9d5a2fd/8ed749e1e72f4be2b979af3553ed1ad8 [2025-03-17 19:44:17,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:44:17,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:44:17,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:17,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:44:17,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:44:17,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:17,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edfba0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17, skipping insertion in model container [2025-03-17 19:44:17,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:17,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:44:17,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:17,934 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:44:17,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:17,963 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:44:17,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17 WrapperNode [2025-03-17 19:44:17,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:17,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:17,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:44:17,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:44:17,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:17,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,003 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 189 [2025-03-17 19:44:18,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:18,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:44:18,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:44:18,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:44:18,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,035 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 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]. [2025-03-17 19:44:18,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,040 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:44:18,046 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:44:18,046 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:44:18,046 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:44:18,047 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (1/1) ... [2025-03-17 19:44:18,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:18,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:18,072 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) [2025-03-17 19:44:18,074 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 [2025-03-17 19:44:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:44:18,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:44:18,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:44:18,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:44:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:44:18,091 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:44:18,158 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:44:18,159 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:44:18,483 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:44:18,484 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:44:18,690 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:44:18,690 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:44:18,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:18 BoogieIcfgContainer [2025-03-17 19:44:18,691 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:44:18,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:44:18,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:44:18,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:44:18,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:44:17" (1/3) ... [2025-03-17 19:44:18,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8d7acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:18, skipping insertion in model container [2025-03-17 19:44:18,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:17" (2/3) ... [2025-03-17 19:44:18,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8d7acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:18, skipping insertion in model container [2025-03-17 19:44:18,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:18" (3/3) ... [2025-03-17 19:44:18,701 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2025-03-17 19:44:18,711 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:44:18,712 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-03-17 19:44:18,712 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:44:18,770 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:44:18,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2025-03-17 19:44:18,825 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-03-17 19:44:18,828 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:44:18,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2025-03-17 19:44:18,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2025-03-17 19:44:18,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2025-03-17 19:44:18,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:44:18,857 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;@3421f07f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:44:18,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-17 19:44:18,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:44:18,864 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:44:18,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:44:18,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:18,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:44:18,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:18,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash 524217, now seen corresponding path program 1 times [2025-03-17 19:44:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780027235] [2025-03-17 19:44:18,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:18,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:44:18,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:44:18,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:18,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780027235] [2025-03-17 19:44:19,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780027235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:19,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:19,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101594186] [2025-03-17 19:44:19,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:19,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:19,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:19,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:19,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:19,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:19,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-17 19:44:19,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:19,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:19,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:19,220 INFO L124 PetriNetUnfolderBase]: 65/171 cut-off events. [2025-03-17 19:44:19,221 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-03-17 19:44:19,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 171 events. 65/171 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 654 event pairs, 42 based on Foata normal form. 2/154 useless extension candidates. Maximal degree in co-relation 245. Up to 118 conditions per place. [2025-03-17 19:44:19,224 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2025-03-17 19:44:19,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 153 flow [2025-03-17 19:44:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-03-17 19:44:19,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-17 19:44:19,234 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 90 transitions. [2025-03-17 19:44:19,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 153 flow [2025-03-17 19:44:19,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:19,240 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 136 flow [2025-03-17 19:44:19,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2025-03-17 19:44:19,246 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2025-03-17 19:44:19,246 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 136 flow [2025-03-17 19:44:19,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-17 19:44:19,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:19,247 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:44:19,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:44:19,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:19,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1562446292, now seen corresponding path program 1 times [2025-03-17 19:44:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770582151] [2025-03-17 19:44:19,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:19,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:19,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:19,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:19,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770582151] [2025-03-17 19:44:19,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770582151] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567699165] [2025-03-17 19:44:19,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:19,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:19,382 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) [2025-03-17 19:44:19,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:44:19,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:19,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:19,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:19,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:19,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:19,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567699165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:19,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:19,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:44:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668886448] [2025-03-17 19:44:19,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:19,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:19,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:19,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:19,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:19,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-17 19:44:19,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:19,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:19,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:19,639 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2025-03-17 19:44:19,639 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-17 19:44:19,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 169 events. 65/169 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 42 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 275. Up to 108 conditions per place. [2025-03-17 19:44:19,640 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 16 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2025-03-17 19:44:19,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 184 flow [2025-03-17 19:44:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-03-17 19:44:19,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-03-17 19:44:19,646 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 136 flow. Second operand 6 states and 114 transitions. [2025-03-17 19:44:19,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 184 flow [2025-03-17 19:44:19,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:19,647 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 152 flow [2025-03-17 19:44:19,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2025-03-17 19:44:19,648 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2025-03-17 19:44:19,648 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 152 flow [2025-03-17 19:44:19,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-17 19:44:19,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:19,648 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:44:19,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:19,854 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 [2025-03-17 19:44:19,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:19,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:19,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1191194320, now seen corresponding path program 1 times [2025-03-17 19:44:19,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:19,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082815344] [2025-03-17 19:44:19,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:19,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:19,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:19,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:19,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082815344] [2025-03-17 19:44:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082815344] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136348609] [2025-03-17 19:44:19,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:19,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:19,943 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) [2025-03-17 19:44:19,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:44:19,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:20,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:20,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:20,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:20,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:20,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:20,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:20,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136348609] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:20,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:20,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:44:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583266474] [2025-03-17 19:44:20,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:20,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:20,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:20,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:20,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:20,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 152 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-03-17 19:44:20,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:20,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:20,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:20,231 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2025-03-17 19:44:20,231 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-03-17 19:44:20,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 193 events. 71/193 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 784 event pairs, 42 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 277. Up to 119 conditions per place. [2025-03-17 19:44:20,234 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2025-03-17 19:44:20,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 358 flow [2025-03-17 19:44:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2025-03-17 19:44:20,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-03-17 19:44:20,237 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 152 flow. Second operand 10 states and 192 transitions. [2025-03-17 19:44:20,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 358 flow [2025-03-17 19:44:20,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 300 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-17 19:44:20,240 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 292 flow [2025-03-17 19:44:20,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2025-03-17 19:44:20,240 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2025-03-17 19:44:20,240 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 292 flow [2025-03-17 19:44:20,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-03-17 19:44:20,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:20,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:20,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:44:20,441 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 [2025-03-17 19:44:20,442 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:20,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2005354475, now seen corresponding path program 1 times [2025-03-17 19:44:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:20,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027391109] [2025-03-17 19:44:20,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:20,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:44:20,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:44:20,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:20,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:20,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:20,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027391109] [2025-03-17 19:44:20,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027391109] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:20,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389950671] [2025-03-17 19:44:20,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:20,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:20,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:20,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:20,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:20,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2025-03-17 19:44:20,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:20,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:20,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:20,647 INFO L124 PetriNetUnfolderBase]: 165/365 cut-off events. [2025-03-17 19:44:20,647 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-03-17 19:44:20,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 365 events. 165/365 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1583 event pairs, 67 based on Foata normal form. 10/355 useless extension candidates. Maximal degree in co-relation 701. Up to 219 conditions per place. [2025-03-17 19:44:20,652 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2025-03-17 19:44:20,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 462 flow [2025-03-17 19:44:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-03-17 19:44:20,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64375 [2025-03-17 19:44:20,653 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 292 flow. Second operand 4 states and 103 transitions. [2025-03-17 19:44:20,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 462 flow [2025-03-17 19:44:20,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 438 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:20,658 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 297 flow [2025-03-17 19:44:20,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2025-03-17 19:44:20,659 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2025-03-17 19:44:20,659 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 297 flow [2025-03-17 19:44:20,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2025-03-17 19:44:20,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:20,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:20,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:44:20,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:20,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash -741401244, now seen corresponding path program 1 times [2025-03-17 19:44:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293698546] [2025-03-17 19:44:20,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:20,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:20,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:20,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:20,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:20,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:20,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293698546] [2025-03-17 19:44:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293698546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:20,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20413779] [2025-03-17 19:44:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:20,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:20,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:20,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:20,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:20,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:20,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:20,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:20,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:20,843 INFO L124 PetriNetUnfolderBase]: 248/482 cut-off events. [2025-03-17 19:44:20,843 INFO L125 PetriNetUnfolderBase]: For 209/264 co-relation queries the response was YES. [2025-03-17 19:44:20,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 482 events. 248/482 cut-off events. For 209/264 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2006 event pairs, 117 based on Foata normal form. 32/493 useless extension candidates. Maximal degree in co-relation 1080. Up to 310 conditions per place. [2025-03-17 19:44:20,849 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2025-03-17 19:44:20,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 503 flow [2025-03-17 19:44:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-17 19:44:20,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63125 [2025-03-17 19:44:20,851 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 297 flow. Second operand 4 states and 101 transitions. [2025-03-17 19:44:20,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 503 flow [2025-03-17 19:44:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:20,855 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 323 flow [2025-03-17 19:44:20,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2025-03-17 19:44:20,856 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2025-03-17 19:44:20,856 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 323 flow [2025-03-17 19:44:20,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:20,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:20,856 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:20,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:44:20,857 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:20,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash -104081278, now seen corresponding path program 1 times [2025-03-17 19:44:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393010006] [2025-03-17 19:44:20,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:20,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:20,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:20,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:20,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:20,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393010006] [2025-03-17 19:44:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393010006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:20,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:20,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710793765] [2025-03-17 19:44:20,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:20,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:20,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:20,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:20,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2025-03-17 19:44:20,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-17 19:44:20,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:20,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2025-03-17 19:44:20,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:21,058 INFO L124 PetriNetUnfolderBase]: 190/468 cut-off events. [2025-03-17 19:44:21,058 INFO L125 PetriNetUnfolderBase]: For 245/276 co-relation queries the response was YES. [2025-03-17 19:44:21,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 468 events. 190/468 cut-off events. For 245/276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2126 event pairs, 122 based on Foata normal form. 25/484 useless extension candidates. Maximal degree in co-relation 1110. Up to 273 conditions per place. [2025-03-17 19:44:21,060 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 54 selfloop transitions, 4 changer transitions 14/88 dead transitions. [2025-03-17 19:44:21,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 592 flow [2025-03-17 19:44:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-17 19:44:21,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-17 19:44:21,061 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 323 flow. Second operand 5 states and 130 transitions. [2025-03-17 19:44:21,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 592 flow [2025-03-17 19:44:21,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:21,064 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 346 flow [2025-03-17 19:44:21,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2025-03-17 19:44:21,064 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2025-03-17 19:44:21,064 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 346 flow [2025-03-17 19:44:21,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-17 19:44:21,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:21,065 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:44:21,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:44:21,065 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:21,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1934068483, now seen corresponding path program 2 times [2025-03-17 19:44:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:21,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331908419] [2025-03-17 19:44:21,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:21,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:21,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:21,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:44:21,075 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:21,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:21,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331908419] [2025-03-17 19:44:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331908419] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955495721] [2025-03-17 19:44:21,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:21,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:21,114 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) [2025-03-17 19:44:21,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:44:21,160 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:21,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:44:21,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:21,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:21,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:21,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955495721] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:21,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:21,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:44:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134395640] [2025-03-17 19:44:21,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:21,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:21,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:21,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:21,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:21,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-17 19:44:21,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:21,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:21,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:21,328 INFO L124 PetriNetUnfolderBase]: 189/466 cut-off events. [2025-03-17 19:44:21,329 INFO L125 PetriNetUnfolderBase]: For 285/316 co-relation queries the response was YES. [2025-03-17 19:44:21,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 466 events. 189/466 cut-off events. For 285/316 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2157 event pairs, 122 based on Foata normal form. 12/467 useless extension candidates. Maximal degree in co-relation 1135. Up to 330 conditions per place. [2025-03-17 19:44:21,331 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 34 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2025-03-17 19:44:21,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 436 flow [2025-03-17 19:44:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-03-17 19:44:21,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-03-17 19:44:21,332 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 346 flow. Second operand 4 states and 78 transitions. [2025-03-17 19:44:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 436 flow [2025-03-17 19:44:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 432 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:21,336 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 364 flow [2025-03-17 19:44:21,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2025-03-17 19:44:21,336 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2025-03-17 19:44:21,336 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 364 flow [2025-03-17 19:44:21,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-17 19:44:21,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:21,337 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:44:21,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:21,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:21,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:21,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1987049790, now seen corresponding path program 1 times [2025-03-17 19:44:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445199937] [2025-03-17 19:44:21,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:21,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:21,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:21,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:21,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:21,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:21,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445199937] [2025-03-17 19:44:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445199937] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675899226] [2025-03-17 19:44:21,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:21,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:21,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:21,685 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) [2025-03-17 19:44:21,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:44:21,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:21,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:21,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:21,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:44:21,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:21,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675899226] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:21,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:21,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-17 19:44:21,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662353670] [2025-03-17 19:44:21,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:21,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:44:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:21,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:44:21,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:44:21,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:21,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 364 flow. Second operand has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 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) [2025-03-17 19:44:21,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:21,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:21,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:22,221 INFO L124 PetriNetUnfolderBase]: 207/538 cut-off events. [2025-03-17 19:44:22,221 INFO L125 PetriNetUnfolderBase]: For 544/575 co-relation queries the response was YES. [2025-03-17 19:44:22,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 538 events. 207/538 cut-off events. For 544/575 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2508 event pairs, 122 based on Foata normal form. 23/532 useless extension candidates. Maximal degree in co-relation 1144. Up to 326 conditions per place. [2025-03-17 19:44:22,224 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 24 selfloop transitions, 62 changer transitions 0/100 dead transitions. [2025-03-17 19:44:22,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 806 flow [2025-03-17 19:44:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:44:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:44:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 395 transitions. [2025-03-17 19:44:22,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2025-03-17 19:44:22,226 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 364 flow. Second operand 22 states and 395 transitions. [2025-03-17 19:44:22,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 806 flow [2025-03-17 19:44:22,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 723 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:44:22,233 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 721 flow [2025-03-17 19:44:22,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=721, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2025-03-17 19:44:22,234 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2025-03-17 19:44:22,234 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 721 flow [2025-03-17 19:44:22,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 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) [2025-03-17 19:44:22,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:22,235 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:22,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:22,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:22,439 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:22,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2129423407, now seen corresponding path program 1 times [2025-03-17 19:44:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:22,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991705239] [2025-03-17 19:44:22,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:22,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:22,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:22,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:22,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:22,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:22,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991705239] [2025-03-17 19:44:22,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991705239] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:22,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448907129] [2025-03-17 19:44:22,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:22,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:22,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:22,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:44:22,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:22,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:22,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:22,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:22,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:22,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:22,623 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448907129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:22,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:44:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69583225] [2025-03-17 19:44:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:22,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:22,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:22,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:22,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:22,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:22,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:22,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:22,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:22,831 INFO L124 PetriNetUnfolderBase]: 273/645 cut-off events. [2025-03-17 19:44:22,831 INFO L125 PetriNetUnfolderBase]: For 615/637 co-relation queries the response was YES. [2025-03-17 19:44:22,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 645 events. 273/645 cut-off events. For 615/637 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3041 event pairs, 39 based on Foata normal form. 22/648 useless extension candidates. Maximal degree in co-relation 1745. Up to 218 conditions per place. [2025-03-17 19:44:22,834 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 118 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2025-03-17 19:44:22,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1099 flow [2025-03-17 19:44:22,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2025-03-17 19:44:22,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-03-17 19:44:22,835 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 721 flow. Second operand 6 states and 145 transitions. [2025-03-17 19:44:22,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1099 flow [2025-03-17 19:44:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 941 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-03-17 19:44:22,842 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 573 flow [2025-03-17 19:44:22,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2025-03-17 19:44:22,843 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2025-03-17 19:44:22,843 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 573 flow [2025-03-17 19:44:22,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:22,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:22,843 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:22,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:23,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:23,044 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:23,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1587616665, now seen corresponding path program 1 times [2025-03-17 19:44:23,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:23,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871953113] [2025-03-17 19:44:23,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:23,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:44:23,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:44:23,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:23,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:23,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871953113] [2025-03-17 19:44:23,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871953113] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756345907] [2025-03-17 19:44:23,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:23,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:23,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:23,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:44:23,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:44:23,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:44:23,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:23,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:23,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:23,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756345907] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:23,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:44:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89475194] [2025-03-17 19:44:23,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:23,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:23,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:23,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:23,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:23,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2025-03-17 19:44:23,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:23,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:23,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:23,459 INFO L124 PetriNetUnfolderBase]: 513/1105 cut-off events. [2025-03-17 19:44:23,459 INFO L125 PetriNetUnfolderBase]: For 1000/1068 co-relation queries the response was YES. [2025-03-17 19:44:23,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 1105 events. 513/1105 cut-off events. For 1000/1068 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5338 event pairs, 113 based on Foata normal form. 66/1161 useless extension candidates. Maximal degree in co-relation 3035. Up to 418 conditions per place. [2025-03-17 19:44:23,466 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 160 selfloop transitions, 13 changer transitions 0/184 dead transitions. [2025-03-17 19:44:23,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 184 transitions, 1245 flow [2025-03-17 19:44:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2025-03-17 19:44:23,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6175 [2025-03-17 19:44:23,468 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 573 flow. Second operand 10 states and 247 transitions. [2025-03-17 19:44:23,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 184 transitions, 1245 flow [2025-03-17 19:44:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 184 transitions, 1215 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-17 19:44:23,474 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 641 flow [2025-03-17 19:44:23,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=641, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2025-03-17 19:44:23,476 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2025-03-17 19:44:23,476 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 641 flow [2025-03-17 19:44:23,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2025-03-17 19:44:23,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:23,476 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:23,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:23,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:23,677 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:23,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 946401503, now seen corresponding path program 1 times [2025-03-17 19:44:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201329197] [2025-03-17 19:44:23,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:23,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:23,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:23,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:23,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201329197] [2025-03-17 19:44:23,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201329197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:23,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:23,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:44:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395988503] [2025-03-17 19:44:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:23,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:23,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:23,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:23,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:23,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2025-03-17 19:44:23,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 641 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2025-03-17 19:44:23,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:23,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2025-03-17 19:44:23,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:23,911 INFO L124 PetriNetUnfolderBase]: 412/1078 cut-off events. [2025-03-17 19:44:23,912 INFO L125 PetriNetUnfolderBase]: For 1185/1197 co-relation queries the response was YES. [2025-03-17 19:44:23,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 1078 events. 412/1078 cut-off events. For 1185/1197 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5645 event pairs, 114 based on Foata normal form. 15/1079 useless extension candidates. Maximal degree in co-relation 2897. Up to 479 conditions per place. [2025-03-17 19:44:23,918 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 84 selfloop transitions, 16 changer transitions 10/127 dead transitions. [2025-03-17 19:44:23,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 930 flow [2025-03-17 19:44:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-03-17 19:44:23,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.67 [2025-03-17 19:44:23,919 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 641 flow. Second operand 5 states and 134 transitions. [2025-03-17 19:44:23,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 930 flow [2025-03-17 19:44:23,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 915 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:23,927 INFO L231 Difference]: Finished difference. Result has 95 places, 109 transitions, 688 flow [2025-03-17 19:44:23,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=95, PETRI_TRANSITIONS=109} [2025-03-17 19:44:23,928 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2025-03-17 19:44:23,928 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 109 transitions, 688 flow [2025-03-17 19:44:23,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2025-03-17 19:44:23,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:23,928 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:23,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:44:23,929 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:23,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1029679703, now seen corresponding path program 1 times [2025-03-17 19:44:23,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:23,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890942781] [2025-03-17 19:44:23,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:23,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:44:23,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:44:23,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:23,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:23,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890942781] [2025-03-17 19:44:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890942781] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890199976] [2025-03-17 19:44:23,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:24,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:24,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:24,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:24,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:44:24,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:44:24,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:44:24,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:24,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:24,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:24,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:24,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890199976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:24,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:44:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665069493] [2025-03-17 19:44:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:24,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:24,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:24,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:24,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:24,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 109 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-03-17 19:44:24,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:24,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:24,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:24,258 INFO L124 PetriNetUnfolderBase]: 525/1103 cut-off events. [2025-03-17 19:44:24,258 INFO L125 PetriNetUnfolderBase]: For 1797/1821 co-relation queries the response was YES. [2025-03-17 19:44:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 1103 events. 525/1103 cut-off events. For 1797/1821 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5282 event pairs, 93 based on Foata normal form. 25/1086 useless extension candidates. Maximal degree in co-relation 3395. Up to 347 conditions per place. [2025-03-17 19:44:24,265 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 146 selfloop transitions, 7 changer transitions 0/166 dead transitions. [2025-03-17 19:44:24,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 166 transitions, 1309 flow [2025-03-17 19:44:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2025-03-17 19:44:24,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2025-03-17 19:44:24,266 INFO L175 Difference]: Start difference. First operand has 95 places, 109 transitions, 688 flow. Second operand 6 states and 141 transitions. [2025-03-17 19:44:24,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 166 transitions, 1309 flow [2025-03-17 19:44:24,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1277 flow, removed 14 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:24,273 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 687 flow [2025-03-17 19:44:24,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2025-03-17 19:44:24,274 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2025-03-17 19:44:24,274 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 687 flow [2025-03-17 19:44:24,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-03-17 19:44:24,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:24,274 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:24,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:44:24,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:24,476 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:24,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1855299224, now seen corresponding path program 1 times [2025-03-17 19:44:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:24,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380595740] [2025-03-17 19:44:24,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:24,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:44:24,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:44:24,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:24,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380595740] [2025-03-17 19:44:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380595740] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76669864] [2025-03-17 19:44:24,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:24,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:24,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:24,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:24,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:44:24,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:44:24,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:44:24,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:24,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:24,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:24,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:24,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:24,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76669864] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:24,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:24,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:44:24,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628557077] [2025-03-17 19:44:24,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:24,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:24,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:24,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:24,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:24,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 687 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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) [2025-03-17 19:44:24,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:24,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:24,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:24,993 INFO L124 PetriNetUnfolderBase]: 1005/1963 cut-off events. [2025-03-17 19:44:24,993 INFO L125 PetriNetUnfolderBase]: For 2658/2736 co-relation queries the response was YES. [2025-03-17 19:44:24,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 1963 events. 1005/1963 cut-off events. For 2658/2736 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9928 event pairs, 187 based on Foata normal form. 75/2021 useless extension candidates. Maximal degree in co-relation 5853. Up to 727 conditions per place. [2025-03-17 19:44:25,007 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 208 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2025-03-17 19:44:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 234 transitions, 1781 flow [2025-03-17 19:44:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2025-03-17 19:44:25,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5975 [2025-03-17 19:44:25,008 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 687 flow. Second operand 10 states and 239 transitions. [2025-03-17 19:44:25,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 234 transitions, 1781 flow [2025-03-17 19:44:25,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 234 transitions, 1751 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-17 19:44:25,016 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 755 flow [2025-03-17 19:44:25,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2025-03-17 19:44:25,017 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2025-03-17 19:44:25,017 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 755 flow [2025-03-17 19:44:25,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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) [2025-03-17 19:44:25,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:25,018 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-03-17 19:44:25,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 19:44:25,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 19:44:25,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:25,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash 480488002, now seen corresponding path program 2 times [2025-03-17 19:44:25,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:25,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401925618] [2025-03-17 19:44:25,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:25,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:25,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:44:25,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-03-17 19:44:25,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:25,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:44:25,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401925618] [2025-03-17 19:44:25,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401925618] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928427120] [2025-03-17 19:44:25,260 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:25,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:25,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:25,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:25,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:44:25,312 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:44:25,320 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-03-17 19:44:25,320 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:25,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:25,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:25,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:44:25,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:44:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928427120] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:25,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:25,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:44:25,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770323008] [2025-03-17 19:44:25,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:25,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:25,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:25,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:25,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:25,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2025-03-17 19:44:25,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:25,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:25,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:25,586 INFO L124 PetriNetUnfolderBase]: 735/1626 cut-off events. [2025-03-17 19:44:25,586 INFO L125 PetriNetUnfolderBase]: For 2572/2631 co-relation queries the response was YES. [2025-03-17 19:44:25,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 1626 events. 735/1626 cut-off events. For 2572/2631 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8537 event pairs, 437 based on Foata normal form. 2/1601 useless extension candidates. Maximal degree in co-relation 4839. Up to 1091 conditions per place. [2025-03-17 19:44:25,598 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 41 selfloop transitions, 55 changer transitions 2/116 dead transitions. [2025-03-17 19:44:25,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 116 transitions, 929 flow [2025-03-17 19:44:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2025-03-17 19:44:25,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.455 [2025-03-17 19:44:25,600 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 755 flow. Second operand 5 states and 91 transitions. [2025-03-17 19:44:25,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 116 transitions, 929 flow [2025-03-17 19:44:25,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 116 transitions, 873 flow, removed 5 selfloop flow, removed 12 redundant places. [2025-03-17 19:44:25,608 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 767 flow [2025-03-17 19:44:25,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=767, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2025-03-17 19:44:25,609 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2025-03-17 19:44:25,609 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 767 flow [2025-03-17 19:44:25,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2025-03-17 19:44:25,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:25,610 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:25,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:25,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-17 19:44:25,811 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:25,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1099624556, now seen corresponding path program 1 times [2025-03-17 19:44:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:25,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209063163] [2025-03-17 19:44:25,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:25,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 19:44:25,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 19:44:25,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:25,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209063163] [2025-03-17 19:44:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209063163] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594017236] [2025-03-17 19:44:26,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:26,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:26,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:26,010 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:26,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:44:26,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 19:44:26,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 19:44:26,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:26,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:26,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:44:26,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:26,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:26,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594017236] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:26,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:26,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-17 19:44:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737249632] [2025-03-17 19:44:26,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:26,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:44:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:26,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:44:26,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:44:26,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-03-17 19:44:26,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 767 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2025-03-17 19:44:26,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:26,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-03-17 19:44:26,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:26,931 INFO L124 PetriNetUnfolderBase]: 1963/3657 cut-off events. [2025-03-17 19:44:26,931 INFO L125 PetriNetUnfolderBase]: For 6639/6761 co-relation queries the response was YES. [2025-03-17 19:44:26,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11018 conditions, 3657 events. 1963/3657 cut-off events. For 6639/6761 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 19308 event pairs, 143 based on Foata normal form. 156/3797 useless extension candidates. Maximal degree in co-relation 10813. Up to 807 conditions per place. [2025-03-17 19:44:26,949 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 400 selfloop transitions, 31 changer transitions 0/443 dead transitions. [2025-03-17 19:44:26,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 443 transitions, 3289 flow [2025-03-17 19:44:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:44:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:44:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2025-03-17 19:44:26,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2025-03-17 19:44:26,953 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 767 flow. Second operand 22 states and 538 transitions. [2025-03-17 19:44:26,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 443 transitions, 3289 flow [2025-03-17 19:44:26,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 443 transitions, 3181 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 19:44:26,964 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 867 flow [2025-03-17 19:44:26,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=867, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2025-03-17 19:44:26,964 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2025-03-17 19:44:26,965 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 867 flow [2025-03-17 19:44:26,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2025-03-17 19:44:26,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:26,966 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:26,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:27,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 19:44:27,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:27,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 418820804, now seen corresponding path program 2 times [2025-03-17 19:44:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620145200] [2025-03-17 19:44:27,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:27,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-17 19:44:27,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 38 statements. [2025-03-17 19:44:27,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:27,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-17 19:44:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:27,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620145200] [2025-03-17 19:44:27,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620145200] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:27,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450160350] [2025-03-17 19:44:27,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:27,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:27,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:27,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:27,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:44:27,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-17 19:44:27,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 38 statements. [2025-03-17 19:44:27,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:27,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:27,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:44:27,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-17 19:44:27,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-17 19:44:27,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450160350] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:27,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:44:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223167065] [2025-03-17 19:44:27,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:27,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:27,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:27,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:27,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:27,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:27,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 867 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-03-17 19:44:27,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:27,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:27,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:27,733 INFO L124 PetriNetUnfolderBase]: 2343/4281 cut-off events. [2025-03-17 19:44:27,734 INFO L125 PetriNetUnfolderBase]: For 10265/10443 co-relation queries the response was YES. [2025-03-17 19:44:27,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14209 conditions, 4281 events. 2343/4281 cut-off events. For 10265/10443 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 22366 event pairs, 477 based on Foata normal form. 49/4195 useless extension candidates. Maximal degree in co-relation 13896. Up to 1575 conditions per place. [2025-03-17 19:44:27,753 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 118 selfloop transitions, 14 changer transitions 36/185 dead transitions. [2025-03-17 19:44:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 185 transitions, 1603 flow [2025-03-17 19:44:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-03-17 19:44:27,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.535 [2025-03-17 19:44:27,754 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 867 flow. Second operand 5 states and 107 transitions. [2025-03-17 19:44:27,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 185 transitions, 1603 flow [2025-03-17 19:44:27,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1397 flow, removed 68 selfloop flow, removed 13 redundant places. [2025-03-17 19:44:27,767 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 751 flow [2025-03-17 19:44:27,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=751, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2025-03-17 19:44:27,768 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2025-03-17 19:44:27,768 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 751 flow [2025-03-17 19:44:27,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-03-17 19:44:27,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:27,768 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:27,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 19:44:27,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 19:44:27,969 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-17 19:44:27,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1783001548, now seen corresponding path program 2 times [2025-03-17 19:44:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180282451] [2025-03-17 19:44:27,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:27,979 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-03-17 19:44:27,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 19:44:27,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:27,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-03-17 19:44:28,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:28,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180282451] [2025-03-17 19:44:28,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180282451] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:28,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68727565] [2025-03-17 19:44:28,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:28,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:28,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:28,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:28,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 19:44:28,122 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-03-17 19:44:28,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 19:44:28,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:28,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:28,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:44:28,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-03-17 19:44:28,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-03-17 19:44:28,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68727565] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:28,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:28,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:44:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425859400] [2025-03-17 19:44:28,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:28,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:28,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:28,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:28,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-03-17 19:44:28,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 751 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2025-03-17 19:44:28,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:28,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-03-17 19:44:28,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:28,678 INFO L124 PetriNetUnfolderBase]: 2094/3983 cut-off events. [2025-03-17 19:44:28,678 INFO L125 PetriNetUnfolderBase]: For 9730/9878 co-relation queries the response was YES. [2025-03-17 19:44:28,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 3983 events. 2094/3983 cut-off events. For 9730/9878 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 21323 event pairs, 458 based on Foata normal form. 26/3903 useless extension candidates. Maximal degree in co-relation 12159. Up to 1664 conditions per place. [2025-03-17 19:44:28,693 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 151/151 dead transitions. [2025-03-17 19:44:28,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1195 flow [2025-03-17 19:44:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2025-03-17 19:44:28,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2025-03-17 19:44:28,694 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 751 flow. Second operand 5 states and 106 transitions. [2025-03-17 19:44:28,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1195 flow [2025-03-17 19:44:28,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 151 transitions, 1140 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-03-17 19:44:28,708 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2025-03-17 19:44:28,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2025-03-17 19:44:28,709 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2025-03-17 19:44:28,709 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2025-03-17 19:44:28,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-03-17 19:44:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-03-17 19:44:28,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-03-17 19:44:28,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:28,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 19:44:28,913 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:28,916 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:44:28,916 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:44:28,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:44:28 BasicIcfg [2025-03-17 19:44:28,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:44:28,921 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:44:28,921 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:44:28,922 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:44:28,922 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:18" (3/4) ... [2025-03-17 19:44:28,923 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:44:28,925 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:44:28,925 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:44:28,930 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2025-03-17 19:44:28,931 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-03-17 19:44:28,931 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-03-17 19:44:28,931 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-17 19:44:28,988 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:44:28,988 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:44:28,989 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:44:28,989 INFO L158 Benchmark]: Toolchain (without parser) took 11222.92ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 107.2MB in the beginning and 150.8MB in the end (delta: -43.7MB). Peak memory consumption was 239.1MB. Max. memory is 16.1GB. [2025-03-17 19:44:28,989 INFO L158 Benchmark]: CDTParser took 1.08ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:44:28,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.56ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 95.5MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:44:28,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.70ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 93.2MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:44:28,990 INFO L158 Benchmark]: Boogie Preprocessor took 41.76ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 91.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:44:28,990 INFO L158 Benchmark]: IcfgBuilder took 644.82ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 37.8MB in the end (delta: 53.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-17 19:44:28,990 INFO L158 Benchmark]: TraceAbstraction took 10228.39ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 36.8MB in the beginning and 158.7MB in the end (delta: -121.9MB). Peak memory consumption was 180.7MB. Max. memory is 16.1GB. [2025-03-17 19:44:28,990 INFO L158 Benchmark]: Witness Printer took 67.25ms. Allocated memory is still 427.8MB. Free memory was 158.7MB in the beginning and 150.8MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:44:28,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.56ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 95.5MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.70ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 93.2MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.76ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 91.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 644.82ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 37.8MB in the end (delta: 53.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10228.39ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 36.8MB in the beginning and 158.7MB in the end (delta: -121.9MB). Peak memory consumption was 180.7MB. Max. memory is 16.1GB. * Witness Printer took 67.25ms. Allocated memory is still 427.8MB. Free memory was 158.7MB in the beginning and 150.8MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 62 edges, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.1s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1066 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 981 mSDsluCounter, 221 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 195 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2479 IncrementalHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 26 mSDtfsCounter, 2479 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 661 GetRequests, 491 SyntacticMatches, 7 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=15, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 658 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 876 ConstructedInterpolants, 0 QuantifiedInterpolants, 2382 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1708 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 1366/1907 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:44:29,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE