./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.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-bad-counter-queue2.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 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:43:51,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:43:52,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:43:52,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:43:52,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:43:52,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:43:52,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:43:52,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:43:52,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:43:52,069 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:43:52,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:43:52,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:43:52,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:43:52,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:43:52,070 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:43:52,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:43:52,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:43:52,071 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:43:52,072 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:43:52,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:43:52,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:43:52,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:43:52,073 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 -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2025-03-17 19:43:52,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:43:52,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:43:52,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:43:52,339 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:43:52,339 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:43:52,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2025-03-17 19:43:53,464 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3ab73d5/4621ad68ffc043f7898db5c9ea3db287/FLAG67e602862 [2025-03-17 19:43:53,719 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:43:53,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2025-03-17 19:43:53,728 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3ab73d5/4621ad68ffc043f7898db5c9ea3db287/FLAG67e602862 [2025-03-17 19:43:54,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3ab73d5/4621ad68ffc043f7898db5c9ea3db287 [2025-03-17 19:43:54,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:43:54,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:43:54,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:43:54,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:43:54,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:43:54,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e223a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54, skipping insertion in model container [2025-03-17 19:43:54,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:43:54,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:43:54,213 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:43:54,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:43:54,249 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:43:54,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54 WrapperNode [2025-03-17 19:43:54,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:43:54,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:43:54,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:43:54,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:43:54,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,287 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 159 [2025-03-17 19:43:54,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:43:54,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:43:54,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:43:54,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:43:54,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,311 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-17 19:43:54,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:43:54,320 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:43:54,320 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:43:54,320 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:43:54,321 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (1/1) ... [2025-03-17 19:43:54,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:43:54,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:54,346 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 19:43:54,349 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 19:43:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:43:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:43:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:43:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:43:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:43:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:43:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:43:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:43:54,368 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 19:43:54,456 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:43:54,457 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:43:54,764 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:43:54,765 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:43:55,028 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:43:55,028 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:43:55,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:43:55 BoogieIcfgContainer [2025-03-17 19:43:55,029 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:43:55,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:43:55,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:43:55,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:43:55,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:43:54" (1/3) ... [2025-03-17 19:43:55,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251b044d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:43:55, skipping insertion in model container [2025-03-17 19:43:55,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:54" (2/3) ... [2025-03-17 19:43:55,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251b044d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:43:55, skipping insertion in model container [2025-03-17 19:43:55,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:43:55" (3/3) ... [2025-03-17 19:43:55,037 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2025-03-17 19:43:55,050 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:43:55,053 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue2.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2025-03-17 19:43:55,053 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:43:55,133 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:43:55,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 106 flow [2025-03-17 19:43:55,186 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2025-03-17 19:43:55,188 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:43:55,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 3/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-03-17 19:43:55,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 106 flow [2025-03-17 19:43:55,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 93 flow [2025-03-17 19:43:55,203 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:43:55,212 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;@553d4fb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:43:55,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-17 19:43:55,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:43:55,215 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:43:55,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:43:55,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:55,216 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:43:55,216 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:55,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash 499597, now seen corresponding path program 1 times [2025-03-17 19:43:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160871282] [2025-03-17 19:43:55,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:55,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:43:55,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:43:55,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:55,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:55,407 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 19:43:55,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160871282] [2025-03-17 19:43:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160871282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:55,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:55,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:43:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806014653] [2025-03-17 19:43:55,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:55,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:55,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:55,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:43:55,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-17 19:43:55,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:43:55,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:55,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-17 19:43:55,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:55,649 INFO L124 PetriNetUnfolderBase]: 219/465 cut-off events. [2025-03-17 19:43:55,652 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-17 19:43:55,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 465 events. 219/465 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2592 event pairs, 182 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 805. Up to 377 conditions per place. [2025-03-17 19:43:55,659 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 26 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2025-03-17 19:43:55,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 151 flow [2025-03-17 19:43:55,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:43:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:43:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-03-17 19:43:55,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2025-03-17 19:43:55,674 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 93 flow. Second operand 4 states and 88 transitions. [2025-03-17 19:43:55,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 151 flow [2025-03-17 19:43:55,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:43:55,681 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 109 flow [2025-03-17 19:43:55,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2025-03-17 19:43:55,687 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2025-03-17 19:43:55,687 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 109 flow [2025-03-17 19:43:55,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:43:55,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:55,688 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:43:55,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:43:55,688 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:55,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1999006407, now seen corresponding path program 1 times [2025-03-17 19:43:55,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100949406] [2025-03-17 19:43:55,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:55,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:43:55,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:43:55,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:55,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:55,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100949406] [2025-03-17 19:43:55,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100949406] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795095572] [2025-03-17 19:43:55,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:55,811 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 19:43:55,813 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 19:43:55,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:43:55,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:43:55,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:55,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:55,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:55,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:55,928 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 19:43:55,928 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:43:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795095572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:55,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:43:55,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:43:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762281239] [2025-03-17 19:43:55,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:55,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:43:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:55,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:43:55,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:43:55,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-17 19:43:55,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:55,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:55,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-17 19:43:55,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:56,068 INFO L124 PetriNetUnfolderBase]: 219/464 cut-off events. [2025-03-17 19:43:56,069 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-17 19:43:56,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 464 events. 219/464 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2606 event pairs, 182 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 847. Up to 372 conditions per place. [2025-03-17 19:43:56,072 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 22 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2025-03-17 19:43:56,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 163 flow [2025-03-17 19:43:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:43:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:43:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-17 19:43:56,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2025-03-17 19:43:56,075 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 109 flow. Second operand 6 states and 108 transitions. [2025-03-17 19:43:56,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 163 flow [2025-03-17 19:43:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:56,077 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 116 flow [2025-03-17 19:43:56,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2025-03-17 19:43:56,079 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2025-03-17 19:43:56,079 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 116 flow [2025-03-17 19:43:56,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:56,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:56,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:43:56,097 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 19:43:56,280 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 19:43:56,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:56,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2001394699, now seen corresponding path program 1 times [2025-03-17 19:43:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63519313] [2025-03-17 19:43:56,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:56,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:43:56,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:43:56,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:56,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:56,390 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 19:43:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63519313] [2025-03-17 19:43:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63519313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:56,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:43:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795785559] [2025-03-17 19:43:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:56,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:43:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:56,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:43:56,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:43:56,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2025-03-17 19:43:56,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 116 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 19:43:56,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:56,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2025-03-17 19:43:56,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:56,561 INFO L124 PetriNetUnfolderBase]: 313/676 cut-off events. [2025-03-17 19:43:56,561 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-17 19:43:56,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 676 events. 313/676 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3676 event pairs, 244 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 956. Up to 418 conditions per place. [2025-03-17 19:43:56,566 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 48 selfloop transitions, 5 changer transitions 2/66 dead transitions. [2025-03-17 19:43:56,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2025-03-17 19:43:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:43:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:43:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2025-03-17 19:43:56,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2025-03-17 19:43:56,568 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 116 flow. Second operand 5 states and 126 transitions. [2025-03-17 19:43:56,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2025-03-17 19:43:56,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 262 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-17 19:43:56,569 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2025-03-17 19:43:56,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2025-03-17 19:43:56,570 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-17 19:43:56,570 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2025-03-17 19:43:56,570 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 19:43:56,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:56,571 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:43:56,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:43:56,571 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:56,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1839656887, now seen corresponding path program 1 times [2025-03-17 19:43:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:56,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770095950] [2025-03-17 19:43:56,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:56,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:56,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:43:56,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:43:56,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:56,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:56,656 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 19:43:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770095950] [2025-03-17 19:43:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770095950] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124423501] [2025-03-17 19:43:56,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:56,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:56,659 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 19:43:56,661 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 19:43:56,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:43:56,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:43:56,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:56,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:56,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:56,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:56,745 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 19:43:56,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:56,780 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 19:43:56,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124423501] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:56,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:56,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:43:56,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742385924] [2025-03-17 19:43:56,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:56,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:43:56,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:56,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:43:56,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:43:56,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-17 19:43:56,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 19:43:56,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:56,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-17 19:43:56,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:56,943 INFO L124 PetriNetUnfolderBase]: 290/642 cut-off events. [2025-03-17 19:43:56,943 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-03-17 19:43:56,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 642 events. 290/642 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3813 event pairs, 244 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 936. Up to 510 conditions per place. [2025-03-17 19:43:56,948 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2025-03-17 19:43:56,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 229 flow [2025-03-17 19:43:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:43:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:43:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2025-03-17 19:43:56,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2025-03-17 19:43:56,951 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 10 states and 171 transitions. [2025-03-17 19:43:56,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 229 flow [2025-03-17 19:43:56,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:56,952 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 188 flow [2025-03-17 19:43:56,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2025-03-17 19:43:56,953 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2025-03-17 19:43:56,953 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 188 flow [2025-03-17 19:43:56,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 19:43:56,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:56,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:56,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:43:57,159 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,SelfDestructingSolverStorable3 [2025-03-17 19:43:57,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:57,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:57,160 INFO L85 PathProgramCache]: Analyzing trace with hash -804987529, now seen corresponding path program 1 times [2025-03-17 19:43:57,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:57,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255097945] [2025-03-17 19:43:57,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:57,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:57,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:43:57,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:43:57,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:57,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:57,229 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 19:43:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:57,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255097945] [2025-03-17 19:43:57,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255097945] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:57,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:57,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:43:57,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386376127] [2025-03-17 19:43:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:57,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:43:57,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:57,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:43:57,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:43:57,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2025-03-17 19:43:57,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 19:43:57,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:57,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2025-03-17 19:43:57,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:57,378 INFO L124 PetriNetUnfolderBase]: 268/556 cut-off events. [2025-03-17 19:43:57,378 INFO L125 PetriNetUnfolderBase]: For 123/140 co-relation queries the response was YES. [2025-03-17 19:43:57,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 556 events. 268/556 cut-off events. For 123/140 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2998 event pairs, 219 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 1137. Up to 425 conditions per place. [2025-03-17 19:43:57,383 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 35 selfloop transitions, 2 changer transitions 14/62 dead transitions. [2025-03-17 19:43:57,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 325 flow [2025-03-17 19:43:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:43:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:43:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-03-17 19:43:57,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2025-03-17 19:43:57,386 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 188 flow. Second operand 5 states and 113 transitions. [2025-03-17 19:43:57,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 325 flow [2025-03-17 19:43:57,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:57,389 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 170 flow [2025-03-17 19:43:57,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2025-03-17 19:43:57,390 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-03-17 19:43:57,391 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 170 flow [2025-03-17 19:43:57,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 19:43:57,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:57,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:57,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:43:57,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:57,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:57,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1613853036, now seen corresponding path program 1 times [2025-03-17 19:43:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775868094] [2025-03-17 19:43:57,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:57,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:57,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:57,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:57,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:43:57,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:57,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775868094] [2025-03-17 19:43:57,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775868094] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:57,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:57,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:43:57,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557106110] [2025-03-17 19:43:57,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:57,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:57,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:57,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:57,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:57,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:43:57,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:43:57,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:57,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:43:57,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:57,671 INFO L124 PetriNetUnfolderBase]: 341/744 cut-off events. [2025-03-17 19:43:57,671 INFO L125 PetriNetUnfolderBase]: For 106/135 co-relation queries the response was YES. [2025-03-17 19:43:57,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 744 events. 341/744 cut-off events. For 106/135 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4400 event pairs, 115 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 1522. Up to 343 conditions per place. [2025-03-17 19:43:57,676 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 49 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2025-03-17 19:43:57,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 325 flow [2025-03-17 19:43:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-03-17 19:43:57,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2025-03-17 19:43:57,677 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 170 flow. Second operand 3 states and 90 transitions. [2025-03-17 19:43:57,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 325 flow [2025-03-17 19:43:57,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 301 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-17 19:43:57,681 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 194 flow [2025-03-17 19:43:57,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-03-17 19:43:57,682 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2025-03-17 19:43:57,682 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 194 flow [2025-03-17 19:43:57,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:43:57,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:57,682 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:57,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:43:57,682 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:57,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1613853040, now seen corresponding path program 1 times [2025-03-17 19:43:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370736461] [2025-03-17 19:43:57,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:57,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:57,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:57,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:57,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:57,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:57,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370736461] [2025-03-17 19:43:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370736461] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991664705] [2025-03-17 19:43:57,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:57,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:57,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:57,923 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 19:43:57,925 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 19:43:57,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:57,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:57,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:57,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:57,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 19:43:57,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:58,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:43:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:58,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:58,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:43:58,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-17 19:43:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:58,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991664705] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:58,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:58,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:43:58,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393387809] [2025-03-17 19:43:58,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:58,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:43:58,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:58,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:43:58,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:43:58,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:43:58,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 194 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 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 19:43:58,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:58,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:43:58,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:58,418 INFO L124 PetriNetUnfolderBase]: 452/1002 cut-off events. [2025-03-17 19:43:58,418 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2025-03-17 19:43:58,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 1002 events. 452/1002 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6419 event pairs, 101 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 2133. Up to 288 conditions per place. [2025-03-17 19:43:58,426 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 57 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2025-03-17 19:43:58,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 456 flow [2025-03-17 19:43:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:43:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:43:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2025-03-17 19:43:58,427 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2025-03-17 19:43:58,427 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 194 flow. Second operand 8 states and 176 transitions. [2025-03-17 19:43:58,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 456 flow [2025-03-17 19:43:58,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:58,434 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 277 flow [2025-03-17 19:43:58,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2025-03-17 19:43:58,435 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2025-03-17 19:43:58,435 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 277 flow [2025-03-17 19:43:58,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 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 19:43:58,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:58,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:58,443 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 19:43:58,637 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 19:43:58,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:58,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1613853039, now seen corresponding path program 1 times [2025-03-17 19:43:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815099885] [2025-03-17 19:43:58,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:58,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:58,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:58,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:58,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:58,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815099885] [2025-03-17 19:43:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815099885] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240321161] [2025-03-17 19:43:58,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:58,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:58,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:58,796 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 19:43:58,798 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 19:43:58,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:58,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:58,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:58,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:58,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 19:43:58,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:58,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:43:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:58,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:58,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-17 19:43:58,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:43:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240321161] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-17 19:43:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486497758] [2025-03-17 19:43:58,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:58,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:43:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:58,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:43:58,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:43:58,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:43:58,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 277 flow. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 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 19:43:58,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:58,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:43:58,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:59,181 INFO L124 PetriNetUnfolderBase]: 412/937 cut-off events. [2025-03-17 19:43:59,182 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2025-03-17 19:43:59,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 937 events. 412/937 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5914 event pairs, 99 based on Foata normal form. 26/736 useless extension candidates. Maximal degree in co-relation 2332. Up to 279 conditions per place. [2025-03-17 19:43:59,189 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 56 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2025-03-17 19:43:59,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 495 flow [2025-03-17 19:43:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:43:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:43:59,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2025-03-17 19:43:59,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2025-03-17 19:43:59,191 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 277 flow. Second operand 8 states and 175 transitions. [2025-03-17 19:43:59,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 495 flow [2025-03-17 19:43:59,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 485 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:43:59,193 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 297 flow [2025-03-17 19:43:59,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2025-03-17 19:43:59,193 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2025-03-17 19:43:59,196 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 297 flow [2025-03-17 19:43:59,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 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 19:43:59,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:59,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:59,202 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 19:43:59,396 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 19:43:59,397 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:59,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1613853037, now seen corresponding path program 1 times [2025-03-17 19:43:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756167174] [2025-03-17 19:43:59,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:59,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:59,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:59,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:59,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:43:59,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:59,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756167174] [2025-03-17 19:43:59,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756167174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:59,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:59,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:43:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483502627] [2025-03-17 19:43:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:59,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:59,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:59,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:59,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:43:59,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:43:59,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:59,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:43:59,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:59,593 INFO L124 PetriNetUnfolderBase]: 413/1018 cut-off events. [2025-03-17 19:43:59,593 INFO L125 PetriNetUnfolderBase]: For 903/903 co-relation queries the response was YES. [2025-03-17 19:43:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 1018 events. 413/1018 cut-off events. For 903/903 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6556 event pairs, 99 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 2622. Up to 530 conditions per place. [2025-03-17 19:43:59,601 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 62 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2025-03-17 19:43:59,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 554 flow [2025-03-17 19:43:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-03-17 19:43:59,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2025-03-17 19:43:59,602 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 297 flow. Second operand 3 states and 90 transitions. [2025-03-17 19:43:59,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 554 flow [2025-03-17 19:43:59,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:43:59,606 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 394 flow [2025-03-17 19:43:59,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2025-03-17 19:43:59,606 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2025-03-17 19:43:59,606 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 394 flow [2025-03-17 19:43:59,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 19:43:59,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:59,606 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:59,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:43:59,607 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:43:59,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -429521283, now seen corresponding path program 1 times [2025-03-17 19:43:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047697802] [2025-03-17 19:43:59,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:59,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:59,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:59,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:59,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:59,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047697802] [2025-03-17 19:43:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047697802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002319514] [2025-03-17 19:43:59,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:59,765 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 19:43:59,767 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 19:43:59,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:59,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:59,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:59,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:59,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 19:43:59,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:59,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:43:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:59,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:59,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-17 19:43:59,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:43:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002319514] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:59,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:43:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322472] [2025-03-17 19:43:59,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:59,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:43:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:59,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:43:59,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:43:59,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:43:59,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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 19:43:59,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:59,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:43:59,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:00,188 INFO L124 PetriNetUnfolderBase]: 571/1331 cut-off events. [2025-03-17 19:44:00,188 INFO L125 PetriNetUnfolderBase]: For 2093/2093 co-relation queries the response was YES. [2025-03-17 19:44:00,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 1331 events. 571/1331 cut-off events. For 2093/2093 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8942 event pairs, 135 based on Foata normal form. 0/1121 useless extension candidates. Maximal degree in co-relation 3912. Up to 375 conditions per place. [2025-03-17 19:44:00,197 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 81 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2025-03-17 19:44:00,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 916 flow [2025-03-17 19:44:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:44:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:44:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2025-03-17 19:44:00,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2025-03-17 19:44:00,198 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 394 flow. Second operand 8 states and 174 transitions. [2025-03-17 19:44:00,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 916 flow [2025-03-17 19:44:00,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 112 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:00,203 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 501 flow [2025-03-17 19:44:00,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=501, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2025-03-17 19:44:00,204 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-17 19:44:00,204 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 501 flow [2025-03-17 19:44:00,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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 19:44:00,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:00,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:00,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:44:00,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 19:44:00,408 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:00,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash -429521282, now seen corresponding path program 1 times [2025-03-17 19:44:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671797460] [2025-03-17 19:44:00,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:00,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:00,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:00,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:00,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:00,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671797460] [2025-03-17 19:44:00,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671797460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768314543] [2025-03-17 19:44:00,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:00,588 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 19:44:00,589 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 19:44:00,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:00,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:00,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:00,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:00,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-17 19:44:00,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:00,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:44:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:00,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:00,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:44:00,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-17 19:44:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:00,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768314543] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:00,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:00,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:44:00,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023273701] [2025-03-17 19:44:00,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:00,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:44:00,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:00,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:44:00,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:44:00,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:44:00,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 501 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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 19:44:00,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:00,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:44:00,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:01,042 INFO L124 PetriNetUnfolderBase]: 536/1272 cut-off events. [2025-03-17 19:44:01,042 INFO L125 PetriNetUnfolderBase]: For 1703/1703 co-relation queries the response was YES. [2025-03-17 19:44:01,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4211 conditions, 1272 events. 536/1272 cut-off events. For 1703/1703 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8540 event pairs, 135 based on Foata normal form. 24/1034 useless extension candidates. Maximal degree in co-relation 4173. Up to 375 conditions per place. [2025-03-17 19:44:01,050 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 80 selfloop transitions, 19 changer transitions 0/111 dead transitions. [2025-03-17 19:44:01,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 953 flow [2025-03-17 19:44:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:44:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:44:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2025-03-17 19:44:01,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2025-03-17 19:44:01,052 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 501 flow. Second operand 8 states and 173 transitions. [2025-03-17 19:44:01,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 953 flow [2025-03-17 19:44:01,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 943 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:44:01,056 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 525 flow [2025-03-17 19:44:01,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2025-03-17 19:44:01,057 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2025-03-17 19:44:01,057 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 525 flow [2025-03-17 19:44:01,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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 19:44:01,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:01,057 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:01,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 19:44:01,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:01,258 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:01,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash -429557033, now seen corresponding path program 1 times [2025-03-17 19:44:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789474843] [2025-03-17 19:44:01,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:01,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:01,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:01,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:01,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:01,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789474843] [2025-03-17 19:44:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789474843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:01,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:01,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541001040] [2025-03-17 19:44:01,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:01,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:01,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:01,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:01,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-17 19:44:01,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 19:44:01,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:01,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-17 19:44:01,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:01,547 INFO L124 PetriNetUnfolderBase]: 710/1534 cut-off events. [2025-03-17 19:44:01,547 INFO L125 PetriNetUnfolderBase]: For 2525/2525 co-relation queries the response was YES. [2025-03-17 19:44:01,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1534 events. 710/1534 cut-off events. For 2525/2525 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10026 event pairs, 363 based on Foata normal form. 60/1333 useless extension candidates. Maximal degree in co-relation 5307. Up to 954 conditions per place. [2025-03-17 19:44:01,555 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 101 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-03-17 19:44:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 1009 flow [2025-03-17 19:44:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-03-17 19:44:01,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2025-03-17 19:44:01,557 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 525 flow. Second operand 4 states and 106 transitions. [2025-03-17 19:44:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 1009 flow [2025-03-17 19:44:01,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 114 transitions, 990 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:44:01,563 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 533 flow [2025-03-17 19:44:01,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=533, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2025-03-17 19:44:01,563 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2025-03-17 19:44:01,565 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 533 flow [2025-03-17 19:44:01,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 19:44:01,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:01,565 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:01,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:44:01,565 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:01,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -453071516, now seen corresponding path program 1 times [2025-03-17 19:44:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620056016] [2025-03-17 19:44:01,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:01,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:44:01,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:44:01,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:01,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:01,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:01,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620056016] [2025-03-17 19:44:01,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620056016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:01,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:01,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:01,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868467329] [2025-03-17 19:44:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:01,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:01,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:01,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:01,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:01,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-17 19:44:01,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 533 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 19:44:01,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:01,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-17 19:44:01,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:01,794 INFO L124 PetriNetUnfolderBase]: 706/1428 cut-off events. [2025-03-17 19:44:01,794 INFO L125 PetriNetUnfolderBase]: For 2838/2838 co-relation queries the response was YES. [2025-03-17 19:44:01,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 1428 events. 706/1428 cut-off events. For 2838/2838 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8902 event pairs, 368 based on Foata normal form. 58/1270 useless extension candidates. Maximal degree in co-relation 5362. Up to 943 conditions per place. [2025-03-17 19:44:01,805 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 99 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2025-03-17 19:44:01,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 1017 flow [2025-03-17 19:44:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-03-17 19:44:01,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2025-03-17 19:44:01,807 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 533 flow. Second operand 4 states and 104 transitions. [2025-03-17 19:44:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 1017 flow [2025-03-17 19:44:01,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:01,811 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 548 flow [2025-03-17 19:44:01,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2025-03-17 19:44:01,812 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2025-03-17 19:44:01,812 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 548 flow [2025-03-17 19:44:01,813 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 19:44:01,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:01,813 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:01,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:44:01,813 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:01,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2059932416, now seen corresponding path program 1 times [2025-03-17 19:44:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:01,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092904962] [2025-03-17 19:44:01,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:01,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:01,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:01,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:01,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092904962] [2025-03-17 19:44:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092904962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:01,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:01,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867489574] [2025-03-17 19:44:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:01,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:01,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:01,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:44:01,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:44:01,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 19:44:01,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:01,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:44:01,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:01,964 INFO L124 PetriNetUnfolderBase]: 397/811 cut-off events. [2025-03-17 19:44:01,965 INFO L125 PetriNetUnfolderBase]: For 2118/2118 co-relation queries the response was YES. [2025-03-17 19:44:01,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 811 events. 397/811 cut-off events. For 2118/2118 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4527 event pairs, 280 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 3216. Up to 687 conditions per place. [2025-03-17 19:44:01,969 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 51 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2025-03-17 19:44:01,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 542 flow [2025-03-17 19:44:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-17 19:44:01,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2025-03-17 19:44:01,971 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 548 flow. Second operand 3 states and 70 transitions. [2025-03-17 19:44:01,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 542 flow [2025-03-17 19:44:01,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 520 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:01,974 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 418 flow [2025-03-17 19:44:01,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2025-03-17 19:44:01,975 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2025-03-17 19:44:01,975 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 418 flow [2025-03-17 19:44:01,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 19:44:01,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:01,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:01,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:44:01,975 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:01,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2059932417, now seen corresponding path program 1 times [2025-03-17 19:44:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:01,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940343069] [2025-03-17 19:44:01,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:01,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:01,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:01,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:01,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940343069] [2025-03-17 19:44:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940343069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:02,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:02,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:02,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575260621] [2025-03-17 19:44:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:02,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:02,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:02,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:44:02,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-17 19:44:02,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 19:44:02,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:02,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-17 19:44:02,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:02,091 INFO L124 PetriNetUnfolderBase]: 266/586 cut-off events. [2025-03-17 19:44:02,092 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES. [2025-03-17 19:44:02,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 586 events. 266/586 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2947 event pairs, 187 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 2028. Up to 444 conditions per place. [2025-03-17 19:44:02,094 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2025-03-17 19:44:02,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 54 transitions, 392 flow [2025-03-17 19:44:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2025-03-17 19:44:02,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2025-03-17 19:44:02,095 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 418 flow. Second operand 3 states and 68 transitions. [2025-03-17 19:44:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 54 transitions, 392 flow [2025-03-17 19:44:02,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:02,097 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 307 flow [2025-03-17 19:44:02,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-03-17 19:44:02,098 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-03-17 19:44:02,098 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 307 flow [2025-03-17 19:44:02,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 19:44:02,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:02,098 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:02,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:44:02,098 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:02,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2069434302, now seen corresponding path program 1 times [2025-03-17 19:44:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:02,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184124927] [2025-03-17 19:44:02,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:02,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:02,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:02,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:02,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:02,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:02,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:02,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184124927] [2025-03-17 19:44:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184124927] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:02,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371348771] [2025-03-17 19:44:02,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:02,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:02,195 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 19:44:02,196 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 19:44:02,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:02,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:02,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:02,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:02,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:44:02,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:02,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371348771] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:02,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-17 19:44:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085477806] [2025-03-17 19:44:02,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:02,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 19:44:02,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:02,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 19:44:02,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-03-17 19:44:02,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:02,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 307 flow. Second operand has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 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 19:44:02,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:02,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:02,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:02,815 INFO L124 PetriNetUnfolderBase]: 651/1277 cut-off events. [2025-03-17 19:44:02,815 INFO L125 PetriNetUnfolderBase]: For 2524/2524 co-relation queries the response was YES. [2025-03-17 19:44:02,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 1277 events. 651/1277 cut-off events. For 2524/2524 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7015 event pairs, 384 based on Foata normal form. 18/1283 useless extension candidates. Maximal degree in co-relation 4386. Up to 716 conditions per place. [2025-03-17 19:44:02,825 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 82 selfloop transitions, 16 changer transitions 8/114 dead transitions. [2025-03-17 19:44:02,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 857 flow [2025-03-17 19:44:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2025-03-17 19:44:02,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3630434782608696 [2025-03-17 19:44:02,827 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 307 flow. Second operand 10 states and 167 transitions. [2025-03-17 19:44:02,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 857 flow [2025-03-17 19:44:02,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 856 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:02,832 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 395 flow [2025-03-17 19:44:02,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=395, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2025-03-17 19:44:02,833 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2025-03-17 19:44:02,833 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 395 flow [2025-03-17 19:44:02,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 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 19:44:02,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:02,834 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:44:02,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:03,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:03,035 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:03,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash 394401841, now seen corresponding path program 2 times [2025-03-17 19:44:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:03,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805779634] [2025-03-17 19:44:03,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:03,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:03,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:44:03,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:03,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:03,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805779634] [2025-03-17 19:44:03,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805779634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964574080] [2025-03-17 19:44:03,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:03,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:03,095 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 19:44:03,097 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 19:44:03,148 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:03,158 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:44:03,158 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:03,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:03,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:03,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:03,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964574080] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:03,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:44:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940424645] [2025-03-17 19:44:03,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:03,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:03,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:03,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-17 19:44:03,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 19:44:03,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:03,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-17 19:44:03,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:03,290 INFO L124 PetriNetUnfolderBase]: 425/952 cut-off events. [2025-03-17 19:44:03,291 INFO L125 PetriNetUnfolderBase]: For 2854/2879 co-relation queries the response was YES. [2025-03-17 19:44:03,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 952 events. 425/952 cut-off events. For 2854/2879 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5372 event pairs, 302 based on Foata normal form. 14/936 useless extension candidates. Maximal degree in co-relation 3512. Up to 707 conditions per place. [2025-03-17 19:44:03,298 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 29 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2025-03-17 19:44:03,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 58 transitions, 473 flow [2025-03-17 19:44:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2025-03-17 19:44:03,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40217391304347827 [2025-03-17 19:44:03,300 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 395 flow. Second operand 4 states and 74 transitions. [2025-03-17 19:44:03,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 58 transitions, 473 flow [2025-03-17 19:44:03,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 446 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-17 19:44:03,304 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 388 flow [2025-03-17 19:44:03,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2025-03-17 19:44:03,305 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-17 19:44:03,305 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 388 flow [2025-03-17 19:44:03,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 19:44:03,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:03,305 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:03,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:03,505 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,SelfDestructingSolverStorable16 [2025-03-17 19:44:03,505 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:03,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1629155391, now seen corresponding path program 1 times [2025-03-17 19:44:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:03,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670219471] [2025-03-17 19:44:03,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:03,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:44:03,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:44:03,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:03,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:03,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670219471] [2025-03-17 19:44:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670219471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343888367] [2025-03-17 19:44:03,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:03,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:03,608 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 19:44:03,610 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 19:44:03,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:44:03,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:44:03,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:03,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:03,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:44:03,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:03,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343888367] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:03,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:03,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-17 19:44:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459378413] [2025-03-17 19:44:03,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:03,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 19:44:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:03,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 19:44:03,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-03-17 19:44:03,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:03,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 388 flow. Second operand has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 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 19:44:03,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:03,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:03,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:04,197 INFO L124 PetriNetUnfolderBase]: 564/1017 cut-off events. [2025-03-17 19:44:04,197 INFO L125 PetriNetUnfolderBase]: For 3035/3075 co-relation queries the response was YES. [2025-03-17 19:44:04,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 1017 events. 564/1017 cut-off events. For 3035/3075 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4954 event pairs, 356 based on Foata normal form. 22/1032 useless extension candidates. Maximal degree in co-relation 3919. Up to 706 conditions per place. [2025-03-17 19:44:04,202 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 34 selfloop transitions, 10 changer transitions 43/95 dead transitions. [2025-03-17 19:44:04,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 797 flow [2025-03-17 19:44:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-17 19:44:04,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33695652173913043 [2025-03-17 19:44:04,203 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 388 flow. Second operand 10 states and 155 transitions. [2025-03-17 19:44:04,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 797 flow [2025-03-17 19:44:04,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 767 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:04,207 INFO L231 Difference]: Finished difference. Result has 89 places, 52 transitions, 326 flow [2025-03-17 19:44:04,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=89, PETRI_TRANSITIONS=52} [2025-03-17 19:44:04,207 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2025-03-17 19:44:04,207 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 52 transitions, 326 flow [2025-03-17 19:44:04,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 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 19:44:04,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:04,208 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:04,214 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 19:44:04,408 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,SelfDestructingSolverStorable17 [2025-03-17 19:44:04,408 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:04,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1579361212, now seen corresponding path program 2 times [2025-03-17 19:44:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276148737] [2025-03-17 19:44:04,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:04,418 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-17 19:44:04,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:04,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:04,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:04,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276148737] [2025-03-17 19:44:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276148737] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428250392] [2025-03-17 19:44:04,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:04,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:04,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:04,656 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 19:44:04,658 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 19:44:04,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-17 19:44:04,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:04,720 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:04,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:04,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:44:04,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:04,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:04,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:04,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:44:04,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-17 19:44:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428250392] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:04,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-03-17 19:44:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955144971] [2025-03-17 19:44:04,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:04,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 19:44:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:04,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 19:44:04,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2025-03-17 19:44:05,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 52 transitions, 326 flow. Second operand has 25 states, 25 states have (on average 10.56) internal successors, (264), 25 states have internal predecessors, (264), 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 19:44:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:06,318 INFO L124 PetriNetUnfolderBase]: 1258/2278 cut-off events. [2025-03-17 19:44:06,319 INFO L125 PetriNetUnfolderBase]: For 6023/6085 co-relation queries the response was YES. [2025-03-17 19:44:06,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8659 conditions, 2278 events. 1258/2278 cut-off events. For 6023/6085 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12981 event pairs, 145 based on Foata normal form. 54/2322 useless extension candidates. Maximal degree in co-relation 8631. Up to 340 conditions per place. [2025-03-17 19:44:06,330 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 226 selfloop transitions, 33 changer transitions 0/267 dead transitions. [2025-03-17 19:44:06,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 267 transitions, 2195 flow [2025-03-17 19:44:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 19:44:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-17 19:44:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 423 transitions. [2025-03-17 19:44:06,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38315217391304346 [2025-03-17 19:44:06,335 INFO L175 Difference]: Start difference. First operand has 89 places, 52 transitions, 326 flow. Second operand 24 states and 423 transitions. [2025-03-17 19:44:06,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 267 transitions, 2195 flow [2025-03-17 19:44:06,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 267 transitions, 2007 flow, removed 84 selfloop flow, removed 13 redundant places. [2025-03-17 19:44:06,343 INFO L231 Difference]: Finished difference. Result has 96 places, 69 transitions, 485 flow [2025-03-17 19:44:06,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=485, PETRI_PLACES=96, PETRI_TRANSITIONS=69} [2025-03-17 19:44:06,344 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2025-03-17 19:44:06,344 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 69 transitions, 485 flow [2025-03-17 19:44:06,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.56) internal successors, (264), 25 states have internal predecessors, (264), 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 19:44:06,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:06,344 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:06,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 19:44:06,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:06,545 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:06,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1579361213, now seen corresponding path program 1 times [2025-03-17 19:44:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440089189] [2025-03-17 19:44:06,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:06,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:06,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:06,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:06,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:06,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440089189] [2025-03-17 19:44:06,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440089189] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:06,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180950021] [2025-03-17 19:44:06,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:06,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:06,730 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 19:44:06,732 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 19:44:06,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:06,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:06,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:06,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:06,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:44:06,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:06,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:06,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:06,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:07,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:44:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180950021] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:07,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-03-17 19:44:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478409999] [2025-03-17 19:44:07,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:07,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:44:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:07,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:44:07,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:44:07,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-17 19:44:07,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 69 transitions, 485 flow. Second operand has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 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 19:44:07,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:07,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-17 19:44:07,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:07,724 INFO L124 PetriNetUnfolderBase]: 1032/1981 cut-off events. [2025-03-17 19:44:07,724 INFO L125 PetriNetUnfolderBase]: For 6469/6483 co-relation queries the response was YES. [2025-03-17 19:44:07,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7644 conditions, 1981 events. 1032/1981 cut-off events. For 6469/6483 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11545 event pairs, 147 based on Foata normal form. 50/2024 useless extension candidates. Maximal degree in co-relation 7619. Up to 502 conditions per place. [2025-03-17 19:44:07,738 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 106 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2025-03-17 19:44:07,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 1194 flow [2025-03-17 19:44:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 19:44:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 19:44:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2025-03-17 19:44:07,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2025-03-17 19:44:07,739 INFO L175 Difference]: Start difference. First operand has 96 places, 69 transitions, 485 flow. Second operand 14 states and 233 transitions. [2025-03-17 19:44:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 1194 flow [2025-03-17 19:44:07,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 1133 flow, removed 11 selfloop flow, removed 9 redundant places. [2025-03-17 19:44:07,746 INFO L231 Difference]: Finished difference. Result has 102 places, 70 transitions, 519 flow [2025-03-17 19:44:07,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=519, PETRI_PLACES=102, PETRI_TRANSITIONS=70} [2025-03-17 19:44:07,746 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2025-03-17 19:44:07,747 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 70 transitions, 519 flow [2025-03-17 19:44:07,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 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 19:44:07,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:07,747 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:07,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:07,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:07,951 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:07,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1642649654, now seen corresponding path program 1 times [2025-03-17 19:44:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518099445] [2025-03-17 19:44:07,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:07,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:07,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:07,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:07,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:07,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518099445] [2025-03-17 19:44:07,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518099445] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338720771] [2025-03-17 19:44:07,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:07,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:07,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:07,999 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 19:44:08,010 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 19:44:08,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:08,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:08,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:08,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:08,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:08,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:08,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338720771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:08,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:44:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185439012] [2025-03-17 19:44:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:08,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:08,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:08,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:08,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-17 19:44:08,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 70 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 19:44:08,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:08,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-17 19:44:08,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:08,337 INFO L124 PetriNetUnfolderBase]: 920/1793 cut-off events. [2025-03-17 19:44:08,337 INFO L125 PetriNetUnfolderBase]: For 7016/7016 co-relation queries the response was YES. [2025-03-17 19:44:08,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 1793 events. 920/1793 cut-off events. For 7016/7016 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10284 event pairs, 73 based on Foata normal form. 72/1859 useless extension candidates. Maximal degree in co-relation 7213. Up to 542 conditions per place. [2025-03-17 19:44:08,347 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 89 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2025-03-17 19:44:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 118 transitions, 1011 flow [2025-03-17 19:44:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2025-03-17 19:44:08,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2025-03-17 19:44:08,349 INFO L175 Difference]: Start difference. First operand has 102 places, 70 transitions, 519 flow. Second operand 6 states and 136 transitions. [2025-03-17 19:44:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 118 transitions, 1011 flow [2025-03-17 19:44:08,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 955 flow, removed 3 selfloop flow, removed 13 redundant places. [2025-03-17 19:44:08,355 INFO L231 Difference]: Finished difference. Result has 93 places, 69 transitions, 497 flow [2025-03-17 19:44:08,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=93, PETRI_TRANSITIONS=69} [2025-03-17 19:44:08,356 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2025-03-17 19:44:08,356 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 69 transitions, 497 flow [2025-03-17 19:44:08,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 19:44:08,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:08,356 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:08,362 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 19:44:08,556 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,SelfDestructingSolverStorable20 [2025-03-17 19:44:08,556 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:08,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash -170020027, now seen corresponding path program 2 times [2025-03-17 19:44:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208542319] [2025-03-17 19:44:08,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:08,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 19:44:08,566 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:08,566 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:08,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:08,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208542319] [2025-03-17 19:44:08,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208542319] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649814663] [2025-03-17 19:44:08,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:08,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:08,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:08,790 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:08,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 19:44:08,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-17 19:44:08,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:08,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:08,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:08,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:44:08,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:08,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:08,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:09,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:44:09,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-17 19:44:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:09,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649814663] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:09,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:09,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-03-17 19:44:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138365001] [2025-03-17 19:44:09,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:09,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 19:44:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:09,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 19:44:09,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2025-03-17 19:44:09,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:09,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 69 transitions, 497 flow. Second operand has 25 states, 25 states have (on average 10.8) internal successors, (270), 25 states have internal predecessors, (270), 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 19:44:09,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:09,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:09,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:10,187 INFO L124 PetriNetUnfolderBase]: 1592/2752 cut-off events. [2025-03-17 19:44:10,188 INFO L125 PetriNetUnfolderBase]: For 12832/12872 co-relation queries the response was YES. [2025-03-17 19:44:10,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11663 conditions, 2752 events. 1592/2752 cut-off events. For 12832/12872 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 15793 event pairs, 224 based on Foata normal form. 102/2838 useless extension candidates. Maximal degree in co-relation 11640. Up to 432 conditions per place. [2025-03-17 19:44:10,201 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 260 selfloop transitions, 33 changer transitions 3/307 dead transitions. [2025-03-17 19:44:10,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 307 transitions, 3114 flow [2025-03-17 19:44:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 19:44:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-17 19:44:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 401 transitions. [2025-03-17 19:44:10,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3632246376811594 [2025-03-17 19:44:10,202 INFO L175 Difference]: Start difference. First operand has 93 places, 69 transitions, 497 flow. Second operand 24 states and 401 transitions. [2025-03-17 19:44:10,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 307 transitions, 3114 flow [2025-03-17 19:44:10,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 307 transitions, 2794 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-17 19:44:10,210 INFO L231 Difference]: Finished difference. Result has 115 places, 86 transitions, 654 flow [2025-03-17 19:44:10,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=654, PETRI_PLACES=115, PETRI_TRANSITIONS=86} [2025-03-17 19:44:10,210 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2025-03-17 19:44:10,211 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 86 transitions, 654 flow [2025-03-17 19:44:10,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.8) internal successors, (270), 25 states have internal predecessors, (270), 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 19:44:10,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:10,211 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:10,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:10,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-17 19:44:10,413 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:10,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash -170020026, now seen corresponding path program 1 times [2025-03-17 19:44:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681039717] [2025-03-17 19:44:10,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:10,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:10,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:10,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:10,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681039717] [2025-03-17 19:44:10,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681039717] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595593540] [2025-03-17 19:44:10,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:10,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:10,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:10,581 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:10,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 19:44:10,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:10,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:10,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:10,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:10,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:44:10,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:10,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:10,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:10,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:10,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:44:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595593540] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:10,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-03-17 19:44:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598159004] [2025-03-17 19:44:10,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:10,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:44:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:10,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:44:10,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:44:10,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-17 19:44:10,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 86 transitions, 654 flow. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 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 19:44:10,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:10,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-17 19:44:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:11,422 INFO L124 PetriNetUnfolderBase]: 1312/2434 cut-off events. [2025-03-17 19:44:11,423 INFO L125 PetriNetUnfolderBase]: For 10789/10822 co-relation queries the response was YES. [2025-03-17 19:44:11,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10321 conditions, 2434 events. 1312/2434 cut-off events. For 10789/10822 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14445 event pairs, 268 based on Foata normal form. 76/2482 useless extension candidates. Maximal degree in co-relation 10293. Up to 692 conditions per place. [2025-03-17 19:44:11,442 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 182 selfloop transitions, 29 changer transitions 0/224 dead transitions. [2025-03-17 19:44:11,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 224 transitions, 2186 flow [2025-03-17 19:44:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 19:44:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 19:44:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 227 transitions. [2025-03-17 19:44:11,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35248447204968947 [2025-03-17 19:44:11,443 INFO L175 Difference]: Start difference. First operand has 115 places, 86 transitions, 654 flow. Second operand 14 states and 227 transitions. [2025-03-17 19:44:11,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 224 transitions, 2186 flow [2025-03-17 19:44:11,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 224 transitions, 2129 flow, removed 7 selfloop flow, removed 10 redundant places. [2025-03-17 19:44:11,458 INFO L231 Difference]: Finished difference. Result has 120 places, 87 transitions, 692 flow [2025-03-17 19:44:11,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=692, PETRI_PLACES=120, PETRI_TRANSITIONS=87} [2025-03-17 19:44:11,459 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2025-03-17 19:44:11,459 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 87 transitions, 692 flow [2025-03-17 19:44:11,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 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 19:44:11,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:11,459 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:11,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 19:44:11,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:11,661 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:11,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:11,662 INFO L85 PathProgramCache]: Analyzing trace with hash 617468742, now seen corresponding path program 1 times [2025-03-17 19:44:11,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:11,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864234365] [2025-03-17 19:44:11,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:11,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:11,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:11,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:11,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:11,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864234365] [2025-03-17 19:44:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864234365] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852537533] [2025-03-17 19:44:11,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:11,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:11,708 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:11,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 19:44:11,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:11,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:11,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:11,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:11,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:11,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:11,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:11,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852537533] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:11,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:11,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:44:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214287328] [2025-03-17 19:44:11,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:11,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:11,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:11,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:11,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-17 19:44:11,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 87 transitions, 692 flow. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 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 19:44:11,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:11,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-17 19:44:11,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:12,320 INFO L124 PetriNetUnfolderBase]: 1831/3643 cut-off events. [2025-03-17 19:44:12,320 INFO L125 PetriNetUnfolderBase]: For 20479/20523 co-relation queries the response was YES. [2025-03-17 19:44:12,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15985 conditions, 3643 events. 1831/3643 cut-off events. For 20479/20523 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23145 event pairs, 425 based on Foata normal form. 176/3780 useless extension candidates. Maximal degree in co-relation 15956. Up to 1191 conditions per place. [2025-03-17 19:44:12,341 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 272 selfloop transitions, 26 changer transitions 0/312 dead transitions. [2025-03-17 19:44:12,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 312 transitions, 3428 flow [2025-03-17 19:44:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2025-03-17 19:44:12,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2025-03-17 19:44:12,342 INFO L175 Difference]: Start difference. First operand has 120 places, 87 transitions, 692 flow. Second operand 10 states and 238 transitions. [2025-03-17 19:44:12,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 312 transitions, 3428 flow [2025-03-17 19:44:12,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 312 transitions, 3160 flow, removed 18 selfloop flow, removed 12 redundant places. [2025-03-17 19:44:12,358 INFO L231 Difference]: Finished difference. Result has 120 places, 100 transitions, 830 flow [2025-03-17 19:44:12,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=830, PETRI_PLACES=120, PETRI_TRANSITIONS=100} [2025-03-17 19:44:12,359 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2025-03-17 19:44:12,359 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 100 transitions, 830 flow [2025-03-17 19:44:12,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 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 19:44:12,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:12,359 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:12,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:12,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:12,560 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:12,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash -180467668, now seen corresponding path program 1 times [2025-03-17 19:44:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818430898] [2025-03-17 19:44:12,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:12,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:44:12,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:44:12,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:12,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:12,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:12,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818430898] [2025-03-17 19:44:12,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818430898] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:12,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148514657] [2025-03-17 19:44:12,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:12,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:12,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:12,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:12,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 19:44:12,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:44:12,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:44:12,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:12,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:12,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:12,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:12,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:12,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148514657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:12,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:12,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:44:12,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822890603] [2025-03-17 19:44:12,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:12,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:12,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:12,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:12,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:12,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-17 19:44:12,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 100 transitions, 830 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 19:44:12,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:12,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-17 19:44:12,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:13,259 INFO L124 PetriNetUnfolderBase]: 2006/3717 cut-off events. [2025-03-17 19:44:13,260 INFO L125 PetriNetUnfolderBase]: For 20512/20646 co-relation queries the response was YES. [2025-03-17 19:44:13,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 3717 events. 2006/3717 cut-off events. For 20512/20646 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23508 event pairs, 266 based on Foata normal form. 223/3922 useless extension candidates. Maximal degree in co-relation 16652. Up to 1126 conditions per place. [2025-03-17 19:44:13,284 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 192 selfloop transitions, 19 changer transitions 0/229 dead transitions. [2025-03-17 19:44:13,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 229 transitions, 2504 flow [2025-03-17 19:44:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-03-17 19:44:13,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2025-03-17 19:44:13,285 INFO L175 Difference]: Start difference. First operand has 120 places, 100 transitions, 830 flow. Second operand 6 states and 132 transitions. [2025-03-17 19:44:13,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 229 transitions, 2504 flow [2025-03-17 19:44:13,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 229 transitions, 2462 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:13,303 INFO L231 Difference]: Finished difference. Result has 122 places, 99 transitions, 846 flow [2025-03-17 19:44:13,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=122, PETRI_TRANSITIONS=99} [2025-03-17 19:44:13,303 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-17 19:44:13,304 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 99 transitions, 846 flow [2025-03-17 19:44:13,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 19:44:13,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:13,304 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:13,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:13,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-17 19:44:13,504 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:13,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1299529933, now seen corresponding path program 1 times [2025-03-17 19:44:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813378958] [2025-03-17 19:44:13,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:13,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:13,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:44:13,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:44:13,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:13,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813378958] [2025-03-17 19:44:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813378958] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10403239] [2025-03-17 19:44:13,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:13,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:13,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:13,543 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:13,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 19:44:13,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:44:13,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:44:13,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:13,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:13,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:13,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:13,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:44:13,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10403239] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:13,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:13,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:44:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282182049] [2025-03-17 19:44:13,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:13,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:13,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:13,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:13,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-17 19:44:13,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 99 transitions, 846 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 19:44:13,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:13,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-17 19:44:13,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:14,377 INFO L124 PetriNetUnfolderBase]: 3111/5663 cut-off events. [2025-03-17 19:44:14,377 INFO L125 PetriNetUnfolderBase]: For 35630/35839 co-relation queries the response was YES. [2025-03-17 19:44:14,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26860 conditions, 5663 events. 3111/5663 cut-off events. For 35630/35839 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 37193 event pairs, 806 based on Foata normal form. 337/5952 useless extension candidates. Maximal degree in co-relation 26829. Up to 1981 conditions per place. [2025-03-17 19:44:14,413 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 336 selfloop transitions, 26 changer transitions 0/380 dead transitions. [2025-03-17 19:44:14,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 380 transitions, 4250 flow [2025-03-17 19:44:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2025-03-17 19:44:14,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 19:44:14,415 INFO L175 Difference]: Start difference. First operand has 122 places, 99 transitions, 846 flow. Second operand 10 states and 230 transitions. [2025-03-17 19:44:14,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 380 transitions, 4250 flow [2025-03-17 19:44:14,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 380 transitions, 4175 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-17 19:44:14,438 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 993 flow [2025-03-17 19:44:14,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=993, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2025-03-17 19:44:14,439 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 82 predicate places. [2025-03-17 19:44:14,439 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 993 flow [2025-03-17 19:44:14,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 19:44:14,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:14,439 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:44:14,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:14,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-17 19:44:14,640 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:14,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash 681990634, now seen corresponding path program 2 times [2025-03-17 19:44:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:14,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093038869] [2025-03-17 19:44:14,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:14,645 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-17 19:44:14,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:44:14,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:14,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:14,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:14,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093038869] [2025-03-17 19:44:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093038869] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:14,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101847023] [2025-03-17 19:44:14,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:14,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:14,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:14,753 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:14,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 19:44:14,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-17 19:44:14,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:44:14,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:14,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:14,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 19:44:14,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:14,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101847023] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:15,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:15,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-17 19:44:15,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868720101] [2025-03-17 19:44:15,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:15,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 19:44:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:15,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 19:44:15,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-03-17 19:44:15,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:15,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 993 flow. Second operand has 28 states, 28 states have (on average 10.428571428571429) internal successors, (292), 28 states have internal predecessors, (292), 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 19:44:15,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:15,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:15,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:15,861 INFO L124 PetriNetUnfolderBase]: 2796/4909 cut-off events. [2025-03-17 19:44:15,861 INFO L125 PetriNetUnfolderBase]: For 28549/28641 co-relation queries the response was YES. [2025-03-17 19:44:15,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23111 conditions, 4909 events. 2796/4909 cut-off events. For 28549/28641 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 29833 event pairs, 1777 based on Foata normal form. 65/4903 useless extension candidates. Maximal degree in co-relation 23078. Up to 3387 conditions per place. [2025-03-17 19:44:15,898 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 136 selfloop transitions, 19 changer transitions 30/201 dead transitions. [2025-03-17 19:44:15,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 201 transitions, 2137 flow [2025-03-17 19:44:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 19:44:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 19:44:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2025-03-17 19:44:15,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3416149068322981 [2025-03-17 19:44:15,899 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 993 flow. Second operand 14 states and 220 transitions. [2025-03-17 19:44:15,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 201 transitions, 2137 flow [2025-03-17 19:44:15,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 201 transitions, 2090 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-17 19:44:15,929 INFO L231 Difference]: Finished difference. Result has 135 places, 96 transitions, 845 flow [2025-03-17 19:44:15,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=845, PETRI_PLACES=135, PETRI_TRANSITIONS=96} [2025-03-17 19:44:15,929 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 89 predicate places. [2025-03-17 19:44:15,930 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 96 transitions, 845 flow [2025-03-17 19:44:15,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.428571428571429) internal successors, (292), 28 states have internal predecessors, (292), 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 19:44:15,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:15,930 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:15,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 19:44:16,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-17 19:44:16,131 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:16,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash 987234424, now seen corresponding path program 2 times [2025-03-17 19:44:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430995657] [2025-03-17 19:44:16,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:16,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:16,139 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-17 19:44:16,143 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:44:16,143 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:16,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430995657] [2025-03-17 19:44:16,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430995657] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096259390] [2025-03-17 19:44:16,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:16,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:16,297 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:16,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 19:44:16,364 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-17 19:44:16,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:44:16,380 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:44:16,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:16,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 19:44:16,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:16,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096259390] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:16,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-17 19:44:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394692005] [2025-03-17 19:44:16,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:16,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 19:44:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:16,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 19:44:16,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-03-17 19:44:16,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:16,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 96 transitions, 845 flow. Second operand has 28 states, 28 states have (on average 10.5) internal successors, (294), 28 states have internal predecessors, (294), 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 19:44:16,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:16,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:16,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:17,378 INFO L124 PetriNetUnfolderBase]: 2377/4071 cut-off events. [2025-03-17 19:44:17,378 INFO L125 PetriNetUnfolderBase]: For 21897/21956 co-relation queries the response was YES. [2025-03-17 19:44:17,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18863 conditions, 4071 events. 2377/4071 cut-off events. For 21897/21956 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 23605 event pairs, 1695 based on Foata normal form. 15/4070 useless extension candidates. Maximal degree in co-relation 18830. Up to 3389 conditions per place. [2025-03-17 19:44:17,406 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 49 selfloop transitions, 10 changer transitions 77/146 dead transitions. [2025-03-17 19:44:17,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 146 transitions, 1527 flow [2025-03-17 19:44:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 19:44:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 19:44:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 206 transitions. [2025-03-17 19:44:17,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3198757763975155 [2025-03-17 19:44:17,407 INFO L175 Difference]: Start difference. First operand has 135 places, 96 transitions, 845 flow. Second operand 14 states and 206 transitions. [2025-03-17 19:44:17,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 146 transitions, 1527 flow [2025-03-17 19:44:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 1410 flow, removed 4 selfloop flow, removed 15 redundant places. [2025-03-17 19:44:17,428 INFO L231 Difference]: Finished difference. Result has 131 places, 69 transitions, 552 flow [2025-03-17 19:44:17,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=552, PETRI_PLACES=131, PETRI_TRANSITIONS=69} [2025-03-17 19:44:17,428 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-03-17 19:44:17,428 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 69 transitions, 552 flow [2025-03-17 19:44:17,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.5) internal successors, (294), 28 states have internal predecessors, (294), 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 19:44:17,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:17,429 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:44:17,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 19:44:17,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:17,631 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:17,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1081098353, now seen corresponding path program 3 times [2025-03-17 19:44:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:17,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621268415] [2025-03-17 19:44:17,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:17,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-17 19:44:17,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:44:17,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:17,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:18,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621268415] [2025-03-17 19:44:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621268415] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384787733] [2025-03-17 19:44:18,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:18,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:18,028 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:18,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 19:44:18,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-17 19:44:18,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:44:18,102 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:18,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:18,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-17 19:44:18,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:18,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-17 19:44:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:18,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:18,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:18,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2025-03-17 19:44:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384787733] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:19,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:19,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2025-03-17 19:44:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150768076] [2025-03-17 19:44:19,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:19,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-17 19:44:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:19,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-17 19:44:19,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 19:44:19,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:19,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 69 transitions, 552 flow. Second operand has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 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 19:44:19,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:19,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:19,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:21,970 INFO L124 PetriNetUnfolderBase]: 5989/10498 cut-off events. [2025-03-17 19:44:21,970 INFO L125 PetriNetUnfolderBase]: For 55965/56080 co-relation queries the response was YES. [2025-03-17 19:44:22,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47149 conditions, 10498 events. 5989/10498 cut-off events. For 55965/56080 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 73612 event pairs, 1216 based on Foata normal form. 240/10618 useless extension candidates. Maximal degree in co-relation 47118. Up to 1912 conditions per place. [2025-03-17 19:44:22,138 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 452 selfloop transitions, 64 changer transitions 0/526 dead transitions. [2025-03-17 19:44:22,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 526 transitions, 5636 flow [2025-03-17 19:44:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 19:44:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 19:44:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 552 transitions. [2025-03-17 19:44:22,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-17 19:44:22,139 INFO L175 Difference]: Start difference. First operand has 131 places, 69 transitions, 552 flow. Second operand 32 states and 552 transitions. [2025-03-17 19:44:22,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 526 transitions, 5636 flow [2025-03-17 19:44:22,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 526 transitions, 5515 flow, removed 12 selfloop flow, removed 13 redundant places. [2025-03-17 19:44:22,178 INFO L231 Difference]: Finished difference. Result has 136 places, 114 transitions, 1102 flow [2025-03-17 19:44:22,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1102, PETRI_PLACES=136, PETRI_TRANSITIONS=114} [2025-03-17 19:44:22,178 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 90 predicate places. [2025-03-17 19:44:22,178 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 114 transitions, 1102 flow [2025-03-17 19:44:22,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 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 19:44:22,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:22,179 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:44:22,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 19:44:22,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-17 19:44:22,379 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:22,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1081098352, now seen corresponding path program 3 times [2025-03-17 19:44:22,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:22,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457942576] [2025-03-17 19:44:22,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:22,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:22,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-17 19:44:22,397 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:44:22,397 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:22,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:22,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:22,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457942576] [2025-03-17 19:44:22,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457942576] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:22,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104023562] [2025-03-17 19:44:22,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:22,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:22,715 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:22,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 19:44:22,781 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-17 19:44:22,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:44:22,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:22,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:22,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 19:44:22,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:22,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:23,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:23,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:23,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:44:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104023562] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:23,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 33 [2025-03-17 19:44:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317311160] [2025-03-17 19:44:23,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:23,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-17 19:44:23,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:23,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-17 19:44:23,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2025-03-17 19:44:23,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:23,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 114 transitions, 1102 flow. Second operand has 35 states, 35 states have (on average 10.571428571428571) internal successors, (370), 35 states have internal predecessors, (370), 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 19:44:23,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:23,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:23,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:25,706 INFO L124 PetriNetUnfolderBase]: 5758/10240 cut-off events. [2025-03-17 19:44:25,707 INFO L125 PetriNetUnfolderBase]: For 64878/64987 co-relation queries the response was YES. [2025-03-17 19:44:25,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49712 conditions, 10240 events. 5758/10240 cut-off events. For 64878/64987 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 72119 event pairs, 1175 based on Foata normal form. 200/10257 useless extension candidates. Maximal degree in co-relation 49679. Up to 1848 conditions per place. [2025-03-17 19:44:25,773 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 456 selfloop transitions, 62 changer transitions 0/528 dead transitions. [2025-03-17 19:44:25,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 528 transitions, 5785 flow [2025-03-17 19:44:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 19:44:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 19:44:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 553 transitions. [2025-03-17 19:44:25,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375679347826087 [2025-03-17 19:44:25,775 INFO L175 Difference]: Start difference. First operand has 136 places, 114 transitions, 1102 flow. Second operand 32 states and 553 transitions. [2025-03-17 19:44:25,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 528 transitions, 5785 flow [2025-03-17 19:44:25,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 528 transitions, 5748 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-03-17 19:44:25,825 INFO L231 Difference]: Finished difference. Result has 162 places, 117 transitions, 1261 flow [2025-03-17 19:44:25,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1261, PETRI_PLACES=162, PETRI_TRANSITIONS=117} [2025-03-17 19:44:25,825 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 116 predicate places. [2025-03-17 19:44:25,826 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 117 transitions, 1261 flow [2025-03-17 19:44:25,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.571428571428571) internal successors, (370), 35 states have internal predecessors, (370), 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 19:44:25,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:25,826 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:25,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-17 19:44:26,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:26,027 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:26,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2017305219, now seen corresponding path program 3 times [2025-03-17 19:44:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:26,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794228535] [2025-03-17 19:44:26,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:26,032 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-17 19:44:26,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:44:26,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:26,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794228535] [2025-03-17 19:44:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794228535] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497862796] [2025-03-17 19:44:26,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:26,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:26,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:26,308 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:26,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-17 19:44:26,366 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-17 19:44:26,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:44:26,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:26,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:26,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-17 19:44:26,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:26,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:44:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:26,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:26,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:44:26,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-17 19:44:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:26,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497862796] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:26,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:26,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 38 [2025-03-17 19:44:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129843876] [2025-03-17 19:44:26,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:26,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-17 19:44:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:26,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-17 19:44:26,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2025-03-17 19:44:27,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:27,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 117 transitions, 1261 flow. Second operand has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 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 19:44:27,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:27,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:27,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:29,728 INFO L124 PetriNetUnfolderBase]: 5225/9182 cut-off events. [2025-03-17 19:44:29,729 INFO L125 PetriNetUnfolderBase]: For 90342/91051 co-relation queries the response was YES. [2025-03-17 19:44:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48424 conditions, 9182 events. 5225/9182 cut-off events. For 90342/91051 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 63303 event pairs, 948 based on Foata normal form. 491/9627 useless extension candidates. Maximal degree in co-relation 48387. Up to 1796 conditions per place. [2025-03-17 19:44:29,809 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 611 selfloop transitions, 47 changer transitions 10/691 dead transitions. [2025-03-17 19:44:29,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 691 transitions, 9843 flow [2025-03-17 19:44:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 19:44:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 19:44:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 513 transitions. [2025-03-17 19:44:29,813 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3485054347826087 [2025-03-17 19:44:29,813 INFO L175 Difference]: Start difference. First operand has 162 places, 117 transitions, 1261 flow. Second operand 32 states and 513 transitions. [2025-03-17 19:44:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 691 transitions, 9843 flow [2025-03-17 19:44:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 691 transitions, 7726 flow, removed 35 selfloop flow, removed 27 redundant places. [2025-03-17 19:44:29,864 INFO L231 Difference]: Finished difference. Result has 171 places, 139 transitions, 1352 flow [2025-03-17 19:44:29,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1352, PETRI_PLACES=171, PETRI_TRANSITIONS=139} [2025-03-17 19:44:29,865 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2025-03-17 19:44:29,865 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 139 transitions, 1352 flow [2025-03-17 19:44:29,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 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 19:44:29,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:29,866 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:29,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-17 19:44:30,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:30,066 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:30,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:30,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2017305218, now seen corresponding path program 3 times [2025-03-17 19:44:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157559363] [2025-03-17 19:44:30,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:30,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-17 19:44:30,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:44:30,086 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:30,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157559363] [2025-03-17 19:44:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157559363] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709839764] [2025-03-17 19:44:30,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:44:30,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:30,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:30,392 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:30,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-17 19:44:30,461 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-17 19:44:30,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:44:30,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 19:44:30,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:30,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-17 19:44:30,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:30,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:44:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:30,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:30,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:30,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:44:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709839764] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:30,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 38 [2025-03-17 19:44:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242274315] [2025-03-17 19:44:30,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:30,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-17 19:44:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:30,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-17 19:44:30,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2025-03-17 19:44:31,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:31,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 139 transitions, 1352 flow. Second operand has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 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 19:44:31,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:31,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:31,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:33,402 INFO L124 PetriNetUnfolderBase]: 4965/8758 cut-off events. [2025-03-17 19:44:33,402 INFO L125 PetriNetUnfolderBase]: For 62245/62910 co-relation queries the response was YES. [2025-03-17 19:44:33,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44300 conditions, 8758 events. 4965/8758 cut-off events. For 62245/62910 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 59605 event pairs, 948 based on Foata normal form. 467/9179 useless extension candidates. Maximal degree in co-relation 44260. Up to 1796 conditions per place. [2025-03-17 19:44:33,456 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 608 selfloop transitions, 47 changer transitions 10/688 dead transitions. [2025-03-17 19:44:33,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 688 transitions, 7855 flow [2025-03-17 19:44:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 19:44:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 19:44:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 510 transitions. [2025-03-17 19:44:33,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34646739130434784 [2025-03-17 19:44:33,457 INFO L175 Difference]: Start difference. First operand has 171 places, 139 transitions, 1352 flow. Second operand 32 states and 510 transitions. [2025-03-17 19:44:33,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 688 transitions, 7855 flow [2025-03-17 19:44:33,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 688 transitions, 7694 flow, removed 8 selfloop flow, removed 19 redundant places. [2025-03-17 19:44:33,507 INFO L231 Difference]: Finished difference. Result has 183 places, 138 transitions, 1287 flow [2025-03-17 19:44:33,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1287, PETRI_PLACES=183, PETRI_TRANSITIONS=138} [2025-03-17 19:44:33,508 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 137 predicate places. [2025-03-17 19:44:33,508 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 138 transitions, 1287 flow [2025-03-17 19:44:33,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 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 19:44:33,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:33,508 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:44:33,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-17 19:44:33,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:33,709 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:33,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2006576689, now seen corresponding path program 4 times [2025-03-17 19:44:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175548306] [2025-03-17 19:44:33,709 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:33,716 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 19:44:33,721 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 19:44:33,721 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:33,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175548306] [2025-03-17 19:44:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175548306] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57450631] [2025-03-17 19:44:34,098 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:34,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:34,100 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:34,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-17 19:44:34,167 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 19:44:34,183 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 19:44:34,183 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:34,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:34,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-17 19:44:34,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:34,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:34,301 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-17 19:44:34,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:44:34,352 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-17 19:44:34,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:44:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:34,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:35,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2025-03-17 19:44:35,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2025-03-17 19:44:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57450631] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:35,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2025-03-17 19:44:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236240119] [2025-03-17 19:44:35,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:35,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-17 19:44:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:35,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-17 19:44:35,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2025-03-17 19:44:35,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-17 19:44:35,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 138 transitions, 1287 flow. Second operand has 44 states, 44 states have (on average 11.318181818181818) internal successors, (498), 44 states have internal predecessors, (498), 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 19:44:35,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:35,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-17 19:44:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:37,197 INFO L124 PetriNetUnfolderBase]: 4075/7974 cut-off events. [2025-03-17 19:44:37,197 INFO L125 PetriNetUnfolderBase]: For 51019/51371 co-relation queries the response was YES. [2025-03-17 19:44:37,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38604 conditions, 7974 events. 4075/7974 cut-off events. For 51019/51371 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 57254 event pairs, 750 based on Foata normal form. 190/8090 useless extension candidates. Maximal degree in co-relation 38566. Up to 2335 conditions per place. [2025-03-17 19:44:37,261 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 340 selfloop transitions, 62 changer transitions 0/422 dead transitions. [2025-03-17 19:44:37,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 422 transitions, 4956 flow [2025-03-17 19:44:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:44:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:44:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 346 transitions. [2025-03-17 19:44:37,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34189723320158105 [2025-03-17 19:44:37,262 INFO L175 Difference]: Start difference. First operand has 183 places, 138 transitions, 1287 flow. Second operand 22 states and 346 transitions. [2025-03-17 19:44:37,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 422 transitions, 4956 flow [2025-03-17 19:44:37,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 422 transitions, 4397 flow, removed 30 selfloop flow, removed 31 redundant places. [2025-03-17 19:44:37,320 INFO L231 Difference]: Finished difference. Result has 174 places, 138 transitions, 1343 flow [2025-03-17 19:44:37,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1343, PETRI_PLACES=174, PETRI_TRANSITIONS=138} [2025-03-17 19:44:37,321 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2025-03-17 19:44:37,321 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 138 transitions, 1343 flow [2025-03-17 19:44:37,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 11.318181818181818) internal successors, (498), 44 states have internal predecessors, (498), 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 19:44:37,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:37,321 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-17 19:44:37,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-17 19:44:37,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:37,522 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:37,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash -172914077, now seen corresponding path program 4 times [2025-03-17 19:44:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634758281] [2025-03-17 19:44:37,523 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:37,529 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 19:44:37,535 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:44:37,535 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:37,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634758281] [2025-03-17 19:44:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634758281] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409942171] [2025-03-17 19:44:37,994 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:37,996 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-17 19:44:38,063 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 19:44:38,079 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:44:38,080 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:38,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:38,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-17 19:44:38,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:38,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:38,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:38,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:38,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:44:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409942171] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:38,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 43 [2025-03-17 19:44:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348513039] [2025-03-17 19:44:38,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:38,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-17 19:44:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:38,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-17 19:44:38,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2025-03-17 19:44:39,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:39,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 138 transitions, 1343 flow. Second operand has 45 states, 45 states have (on average 10.577777777777778) internal successors, (476), 45 states have internal predecessors, (476), 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 19:44:39,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:39,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:39,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:43,184 INFO L124 PetriNetUnfolderBase]: 4733/8697 cut-off events. [2025-03-17 19:44:43,184 INFO L125 PetriNetUnfolderBase]: For 51420/51745 co-relation queries the response was YES. [2025-03-17 19:44:43,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41705 conditions, 8697 events. 4733/8697 cut-off events. For 51420/51745 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 60005 event pairs, 617 based on Foata normal form. 184/8804 useless extension candidates. Maximal degree in co-relation 41668. Up to 1346 conditions per place. [2025-03-17 19:44:43,251 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 797 selfloop transitions, 74 changer transitions 0/887 dead transitions. [2025-03-17 19:44:43,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 887 transitions, 9111 flow [2025-03-17 19:44:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-17 19:44:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2025-03-17 19:44:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 906 transitions. [2025-03-17 19:44:43,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787625418060201 [2025-03-17 19:44:43,253 INFO L175 Difference]: Start difference. First operand has 174 places, 138 transitions, 1343 flow. Second operand 52 states and 906 transitions. [2025-03-17 19:44:43,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 887 transitions, 9111 flow [2025-03-17 19:44:43,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 887 transitions, 8971 flow, removed 7 selfloop flow, removed 23 redundant places. [2025-03-17 19:44:43,321 INFO L231 Difference]: Finished difference. Result has 205 places, 142 transitions, 1424 flow [2025-03-17 19:44:43,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1424, PETRI_PLACES=205, PETRI_TRANSITIONS=142} [2025-03-17 19:44:43,322 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 159 predicate places. [2025-03-17 19:44:43,322 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 142 transitions, 1424 flow [2025-03-17 19:44:43,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.577777777777778) internal successors, (476), 45 states have internal predecessors, (476), 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 19:44:43,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:43,322 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:43,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-17 19:44:43,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-17 19:44:43,523 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:43,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash -944443323, now seen corresponding path program 4 times [2025-03-17 19:44:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:43,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519317235] [2025-03-17 19:44:43,524 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:43,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:43,530 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:44:43,536 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:44:43,536 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:43,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:43,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519317235] [2025-03-17 19:44:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519317235] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783058334] [2025-03-17 19:44:43,948 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:43,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:43,950 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:43,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-17 19:44:44,014 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:44:44,031 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:44:44,031 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:44,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:44,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-17 19:44:44,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:44,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:44,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:44,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:44:44,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-17 19:44:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783058334] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:44,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 43 [2025-03-17 19:44:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70685958] [2025-03-17 19:44:44,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:44,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-17 19:44:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:44,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-17 19:44:44,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2025-03-17 19:44:45,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:45,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 142 transitions, 1424 flow. Second operand has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 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 19:44:45,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:45,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:45,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:48,800 INFO L124 PetriNetUnfolderBase]: 4437/7705 cut-off events. [2025-03-17 19:44:48,800 INFO L125 PetriNetUnfolderBase]: For 67553/68091 co-relation queries the response was YES. [2025-03-17 19:44:48,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40087 conditions, 7705 events. 4437/7705 cut-off events. For 67553/68091 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 51040 event pairs, 659 based on Foata normal form. 205/7877 useless extension candidates. Maximal degree in co-relation 40049. Up to 1316 conditions per place. [2025-03-17 19:44:48,854 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 790 selfloop transitions, 74 changer transitions 0/888 dead transitions. [2025-03-17 19:44:48,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 888 transitions, 11933 flow [2025-03-17 19:44:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-17 19:44:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-03-17 19:44:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 858 transitions. [2025-03-17 19:44:48,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35192780968006565 [2025-03-17 19:44:48,856 INFO L175 Difference]: Start difference. First operand has 205 places, 142 transitions, 1424 flow. Second operand 53 states and 858 transitions. [2025-03-17 19:44:48,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 888 transitions, 11933 flow [2025-03-17 19:44:48,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 888 transitions, 10015 flow, removed 198 selfloop flow, removed 39 redundant places. [2025-03-17 19:44:48,906 INFO L231 Difference]: Finished difference. Result has 223 places, 167 transitions, 1609 flow [2025-03-17 19:44:48,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1609, PETRI_PLACES=223, PETRI_TRANSITIONS=167} [2025-03-17 19:44:48,906 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 177 predicate places. [2025-03-17 19:44:48,906 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 167 transitions, 1609 flow [2025-03-17 19:44:48,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 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 19:44:48,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:48,907 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:48,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-17 19:44:49,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-17 19:44:49,107 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:49,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:49,108 INFO L85 PathProgramCache]: Analyzing trace with hash -944443322, now seen corresponding path program 4 times [2025-03-17 19:44:49,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:49,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998565676] [2025-03-17 19:44:49,108 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:49,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:49,114 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:44:49,120 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:44:49,120 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:49,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:49,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:49,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998565676] [2025-03-17 19:44:49,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998565676] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:49,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146591178] [2025-03-17 19:44:49,514 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 19:44:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:49,516 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:49,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-17 19:44:49,619 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:44:49,637 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:44:49,637 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 19:44:49,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:49,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-17 19:44:49,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:49,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:50,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:50,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:44:50,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:44:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:50,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146591178] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:50,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:50,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 43 [2025-03-17 19:44:50,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426987907] [2025-03-17 19:44:50,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:50,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-17 19:44:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:50,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-17 19:44:50,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2025-03-17 19:44:50,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:44:50,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 167 transitions, 1609 flow. Second operand has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 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 19:44:50,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:50,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:44:50,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:54,380 INFO L124 PetriNetUnfolderBase]: 4281/7434 cut-off events. [2025-03-17 19:44:54,380 INFO L125 PetriNetUnfolderBase]: For 50679/50986 co-relation queries the response was YES. [2025-03-17 19:44:54,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38487 conditions, 7434 events. 4281/7434 cut-off events. For 50679/50986 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 48666 event pairs, 659 based on Foata normal form. 197/7597 useless extension candidates. Maximal degree in co-relation 38445. Up to 1286 conditions per place. [2025-03-17 19:44:54,435 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 787 selfloop transitions, 74 changer transitions 0/885 dead transitions. [2025-03-17 19:44:54,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 885 transitions, 10202 flow [2025-03-17 19:44:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-17 19:44:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-03-17 19:44:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 855 transitions. [2025-03-17 19:44:54,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35069729286300244 [2025-03-17 19:44:54,439 INFO L175 Difference]: Start difference. First operand has 223 places, 167 transitions, 1609 flow. Second operand 53 states and 855 transitions. [2025-03-17 19:44:54,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 885 transitions, 10202 flow [2025-03-17 19:44:54,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 885 transitions, 10025 flow, removed 18 selfloop flow, removed 34 redundant places. [2025-03-17 19:44:54,567 INFO L231 Difference]: Finished difference. Result has 241 places, 166 transitions, 1573 flow [2025-03-17 19:44:54,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1573, PETRI_PLACES=241, PETRI_TRANSITIONS=166} [2025-03-17 19:44:54,567 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 195 predicate places. [2025-03-17 19:44:54,567 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 166 transitions, 1573 flow [2025-03-17 19:44:54,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 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 19:44:54,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:54,568 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-17 19:44:54,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:54,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-17 19:44:54,768 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:44:54,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash -136809442, now seen corresponding path program 5 times [2025-03-17 19:44:54,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:54,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398957308] [2025-03-17 19:44:54,769 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:44:54,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:54,778 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-03-17 19:44:54,797 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 19:44:54,798 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:44:54,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398957308] [2025-03-17 19:44:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398957308] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747615991] [2025-03-17 19:44:55,094 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:44:55,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:55,096 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:55,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-17 19:44:55,165 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-03-17 19:44:55,188 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 19:44:55,188 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:44:55,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:55,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-17 19:44:55,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:55,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:44:55,227 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-17 19:44:55,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:44:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:55,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:56,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2025-03-17 19:44:56,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2025-03-17 19:44:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747615991] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:56,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:56,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2025-03-17 19:44:56,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610657580] [2025-03-17 19:44:56,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:56,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-03-17 19:44:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:56,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-03-17 19:44:56,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2025-03-17 19:44:57,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 46 [2025-03-17 19:44:57,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 166 transitions, 1573 flow. Second operand has 39 states, 39 states have (on average 9.794871794871796) internal successors, (382), 39 states have internal predecessors, (382), 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 19:44:57,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:57,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 46 [2025-03-17 19:44:57,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:00,085 INFO L124 PetriNetUnfolderBase]: 4166/7735 cut-off events. [2025-03-17 19:45:00,085 INFO L125 PetriNetUnfolderBase]: For 51088/51370 co-relation queries the response was YES. [2025-03-17 19:45:00,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38424 conditions, 7735 events. 4166/7735 cut-off events. For 51088/51370 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 52268 event pairs, 753 based on Foata normal form. 119/7747 useless extension candidates. Maximal degree in co-relation 38384. Up to 1282 conditions per place. [2025-03-17 19:45:00,132 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 517 selfloop transitions, 63 changer transitions 0/605 dead transitions. [2025-03-17 19:45:00,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 605 transitions, 7330 flow [2025-03-17 19:45:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-17 19:45:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-17 19:45:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 398 transitions. [2025-03-17 19:45:00,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33277591973244147 [2025-03-17 19:45:00,133 INFO L175 Difference]: Start difference. First operand has 241 places, 166 transitions, 1573 flow. Second operand 26 states and 398 transitions. [2025-03-17 19:45:00,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 605 transitions, 7330 flow [2025-03-17 19:45:00,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 605 transitions, 6493 flow, removed 39 selfloop flow, removed 52 redundant places. [2025-03-17 19:45:00,192 INFO L231 Difference]: Finished difference. Result has 215 places, 166 transitions, 1568 flow [2025-03-17 19:45:00,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1568, PETRI_PLACES=215, PETRI_TRANSITIONS=166} [2025-03-17 19:45:00,192 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 169 predicate places. [2025-03-17 19:45:00,192 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 166 transitions, 1568 flow [2025-03-17 19:45:00,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 9.794871794871796) internal successors, (382), 39 states have internal predecessors, (382), 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 19:45:00,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:00,193 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-17 19:45:00,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-17 19:45:00,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:00,393 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:00,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2043702311, now seen corresponding path program 2 times [2025-03-17 19:45:00,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:00,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242309222] [2025-03-17 19:45:00,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:00,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:00,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-17 19:45:00,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 19:45:00,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:00,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 19:45:00,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:00,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242309222] [2025-03-17 19:45:00,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242309222] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:00,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369165486] [2025-03-17 19:45:00,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:00,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:00,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:00,434 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:00,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-17 19:45:00,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-17 19:45:00,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 19:45:00,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:00,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:00,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:45:00,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 19:45:00,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 19:45:00,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369165486] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:00,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:00,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:45:00,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448939503] [2025-03-17 19:45:00,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:00,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:45:00,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:00,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:45:00,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:45:00,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-03-17 19:45:00,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 166 transitions, 1568 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:00,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:00,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-03-17 19:45:00,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:01,304 INFO L124 PetriNetUnfolderBase]: 4020/7593 cut-off events. [2025-03-17 19:45:01,304 INFO L125 PetriNetUnfolderBase]: For 50359/50587 co-relation queries the response was YES. [2025-03-17 19:45:01,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36605 conditions, 7593 events. 4020/7593 cut-off events. For 50359/50587 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 51916 event pairs, 1010 based on Foata normal form. 145/7568 useless extension candidates. Maximal degree in co-relation 36566. Up to 2851 conditions per place. [2025-03-17 19:45:01,359 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 175 selfloop transitions, 42 changer transitions 30/269 dead transitions. [2025-03-17 19:45:01,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 269 transitions, 2968 flow [2025-03-17 19:45:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:45:01,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:45:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2025-03-17 19:45:01,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2025-03-17 19:45:01,360 INFO L175 Difference]: Start difference. First operand has 215 places, 166 transitions, 1568 flow. Second operand 5 states and 99 transitions. [2025-03-17 19:45:01,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 269 transitions, 2968 flow [2025-03-17 19:45:01,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 269 transitions, 2832 flow, removed 2 selfloop flow, removed 27 redundant places. [2025-03-17 19:45:01,417 INFO L231 Difference]: Finished difference. Result has 192 places, 156 transitions, 1463 flow [2025-03-17 19:45:01,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1463, PETRI_PLACES=192, PETRI_TRANSITIONS=156} [2025-03-17 19:45:01,418 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 146 predicate places. [2025-03-17 19:45:01,418 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 156 transitions, 1463 flow [2025-03-17 19:45:01,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:01,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:01,418 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:01,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-17 19:45:01,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-17 19:45:01,619 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:01,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1025947835, now seen corresponding path program 2 times [2025-03-17 19:45:01,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:01,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183573474] [2025-03-17 19:45:01,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:01,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-17 19:45:01,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 19:45:01,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:01,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 19:45:01,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183573474] [2025-03-17 19:45:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183573474] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047403922] [2025-03-17 19:45:01,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:01,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:01,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:01,658 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:01,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-17 19:45:01,738 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-17 19:45:01,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 19:45:01,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:01,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:01,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:45:01,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 19:45:01,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 19:45:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047403922] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:01,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:45:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48956018] [2025-03-17 19:45:01,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:01,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:45:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:01,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:45:01,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:45:01,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-03-17 19:45:01,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 156 transitions, 1463 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:01,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:01,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-03-17 19:45:01,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:02,449 INFO L124 PetriNetUnfolderBase]: 3644/6545 cut-off events. [2025-03-17 19:45:02,449 INFO L125 PetriNetUnfolderBase]: For 56475/56788 co-relation queries the response was YES. [2025-03-17 19:45:02,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32700 conditions, 6545 events. 3644/6545 cut-off events. For 56475/56788 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 43260 event pairs, 780 based on Foata normal form. 94/6603 useless extension candidates. Maximal degree in co-relation 32665. Up to 2914 conditions per place. [2025-03-17 19:45:02,491 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 91 selfloop transitions, 14 changer transitions 146/261 dead transitions. [2025-03-17 19:45:02,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 261 transitions, 3169 flow [2025-03-17 19:45:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:45:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:45:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-03-17 19:45:02,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217391304347826 [2025-03-17 19:45:02,492 INFO L175 Difference]: Start difference. First operand has 192 places, 156 transitions, 1463 flow. Second operand 5 states and 97 transitions. [2025-03-17 19:45:02,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 261 transitions, 3169 flow [2025-03-17 19:45:02,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 261 transitions, 3042 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-17 19:45:02,546 INFO L231 Difference]: Finished difference. Result has 189 places, 74 transitions, 672 flow [2025-03-17 19:45:02,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=189, PETRI_TRANSITIONS=74} [2025-03-17 19:45:02,546 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 143 predicate places. [2025-03-17 19:45:02,546 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 74 transitions, 672 flow [2025-03-17 19:45:02,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:02,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:02,546 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-17 19:45:02,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-17 19:45:02,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-17 19:45:02,747 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:02,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2001836624, now seen corresponding path program 5 times [2025-03-17 19:45:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360121422] [2025-03-17 19:45:02,748 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:45:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:02,754 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 6 equivalence classes. [2025-03-17 19:45:02,766 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 19:45:02,766 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:45:02,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360121422] [2025-03-17 19:45:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360121422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993868834] [2025-03-17 19:45:03,116 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:45:03,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:03,118 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:03,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-17 19:45:03,202 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 6 equivalence classes. [2025-03-17 19:45:03,225 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 19:45:03,226 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:45:03,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:03,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-17 19:45:03,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:03,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:45:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:03,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:03,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:45:03,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:45:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:03,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993868834] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:03,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:03,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2025-03-17 19:45:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251134434] [2025-03-17 19:45:03,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:03,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 19:45:03,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:03,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 19:45:03,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 19:45:03,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-17 19:45:03,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 74 transitions, 672 flow. Second operand has 42 states, 42 states have (on average 11.404761904761905) internal successors, (479), 42 states have internal predecessors, (479), 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 19:45:03,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:03,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-17 19:45:03,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:05,596 INFO L124 PetriNetUnfolderBase]: 1518/3012 cut-off events. [2025-03-17 19:45:05,596 INFO L125 PetriNetUnfolderBase]: For 28728/28903 co-relation queries the response was YES. [2025-03-17 19:45:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15867 conditions, 3012 events. 1518/3012 cut-off events. For 28728/28903 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17512 event pairs, 230 based on Foata normal form. 34/3001 useless extension candidates. Maximal degree in co-relation 15842. Up to 754 conditions per place. [2025-03-17 19:45:05,618 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 347 selfloop transitions, 35 changer transitions 0/394 dead transitions. [2025-03-17 19:45:05,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 394 transitions, 4697 flow [2025-03-17 19:45:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-17 19:45:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-17 19:45:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 479 transitions. [2025-03-17 19:45:05,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35907046476761617 [2025-03-17 19:45:05,619 INFO L175 Difference]: Start difference. First operand has 189 places, 74 transitions, 672 flow. Second operand 29 states and 479 transitions. [2025-03-17 19:45:05,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 394 transitions, 4697 flow [2025-03-17 19:45:05,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 394 transitions, 4098 flow, removed 65 selfloop flow, removed 20 redundant places. [2025-03-17 19:45:05,645 INFO L231 Difference]: Finished difference. Result has 140 places, 78 transitions, 690 flow [2025-03-17 19:45:05,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=690, PETRI_PLACES=140, PETRI_TRANSITIONS=78} [2025-03-17 19:45:05,646 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 94 predicate places. [2025-03-17 19:45:05,646 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 78 transitions, 690 flow [2025-03-17 19:45:05,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.404761904761905) internal successors, (479), 42 states have internal predecessors, (479), 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 19:45:05,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:05,647 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-17 19:45:05,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-17 19:45:05,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-17 19:45:05,847 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:05,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2001836625, now seen corresponding path program 6 times [2025-03-17 19:45:05,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974416571] [2025-03-17 19:45:05,848 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 19:45:05,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:05,857 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-03-17 19:45:05,874 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 19:45:05,874 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-17 19:45:05,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:06,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974416571] [2025-03-17 19:45:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974416571] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999565752] [2025-03-17 19:45:06,314 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 19:45:06,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:06,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:06,316 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:06,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-17 19:45:06,397 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-03-17 19:45:06,421 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 19:45:06,421 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-17 19:45:06,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:06,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-17 19:45:06,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:06,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:45:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:06,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:07,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:45:07,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-17 19:45:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999565752] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:07,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:07,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 53 [2025-03-17 19:45:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633204501] [2025-03-17 19:45:07,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:07,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-17 19:45:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:07,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-17 19:45:07,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2025-03-17 19:45:07,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:45:07,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 78 transitions, 690 flow. Second operand has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 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 19:45:07,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:07,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:45:07,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:10,907 INFO L124 PetriNetUnfolderBase]: 3441/6152 cut-off events. [2025-03-17 19:45:10,908 INFO L125 PetriNetUnfolderBase]: For 41334/41521 co-relation queries the response was YES. [2025-03-17 19:45:10,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30204 conditions, 6152 events. 3441/6152 cut-off events. For 41334/41521 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 38163 event pairs, 353 based on Foata normal form. 102/6186 useless extension candidates. Maximal degree in co-relation 30186. Up to 1006 conditions per place. [2025-03-17 19:45:11,005 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 742 selfloop transitions, 62 changer transitions 0/814 dead transitions. [2025-03-17 19:45:11,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 814 transitions, 8711 flow [2025-03-17 19:45:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-17 19:45:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2025-03-17 19:45:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 827 transitions. [2025-03-17 19:45:11,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3745471014492754 [2025-03-17 19:45:11,007 INFO L175 Difference]: Start difference. First operand has 140 places, 78 transitions, 690 flow. Second operand 48 states and 827 transitions. [2025-03-17 19:45:11,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 814 transitions, 8711 flow [2025-03-17 19:45:11,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 814 transitions, 8540 flow, removed 5 selfloop flow, removed 25 redundant places. [2025-03-17 19:45:11,043 INFO L231 Difference]: Finished difference. Result has 167 places, 106 transitions, 1013 flow [2025-03-17 19:45:11,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1013, PETRI_PLACES=167, PETRI_TRANSITIONS=106} [2025-03-17 19:45:11,043 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 121 predicate places. [2025-03-17 19:45:11,043 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 106 transitions, 1013 flow [2025-03-17 19:45:11,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 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 19:45:11,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:11,044 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:11,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-17 19:45:11,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:11,244 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:11,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -511019907, now seen corresponding path program 5 times [2025-03-17 19:45:11,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316018980] [2025-03-17 19:45:11,245 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:45:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:11,252 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-17 19:45:11,264 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 19:45:11,264 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:45:11,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316018980] [2025-03-17 19:45:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316018980] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887743113] [2025-03-17 19:45:11,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:45:11,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:11,589 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:11,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-17 19:45:11,674 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-17 19:45:11,696 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 19:45:11,696 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:45:11,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:11,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-17 19:45:11,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:11,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:45:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:11,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:12,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:45:12,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-17 19:45:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887743113] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:12,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2025-03-17 19:45:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851844046] [2025-03-17 19:45:12,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:12,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 19:45:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:12,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 19:45:12,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 19:45:12,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-17 19:45:12,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 106 transitions, 1013 flow. Second operand has 42 states, 42 states have (on average 11.5) internal successors, (483), 42 states have internal predecessors, (483), 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 19:45:12,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:12,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-17 19:45:12,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:14,545 INFO L124 PetriNetUnfolderBase]: 3284/6245 cut-off events. [2025-03-17 19:45:14,545 INFO L125 PetriNetUnfolderBase]: For 51616/51993 co-relation queries the response was YES. [2025-03-17 19:45:14,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31499 conditions, 6245 events. 3284/6245 cut-off events. For 51616/51993 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 41087 event pairs, 506 based on Foata normal form. 168/6343 useless extension candidates. Maximal degree in co-relation 31477. Up to 1521 conditions per place. [2025-03-17 19:45:14,588 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 686 selfloop transitions, 36 changer transitions 0/741 dead transitions. [2025-03-17 19:45:14,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 741 transitions, 10307 flow [2025-03-17 19:45:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-17 19:45:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-17 19:45:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 464 transitions. [2025-03-17 19:45:14,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2025-03-17 19:45:14,589 INFO L175 Difference]: Start difference. First operand has 167 places, 106 transitions, 1013 flow. Second operand 29 states and 464 transitions. [2025-03-17 19:45:14,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 741 transitions, 10307 flow [2025-03-17 19:45:14,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 741 transitions, 9265 flow, removed 99 selfloop flow, removed 26 redundant places. [2025-03-17 19:45:14,622 INFO L231 Difference]: Finished difference. Result has 171 places, 110 transitions, 1040 flow [2025-03-17 19:45:14,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1040, PETRI_PLACES=171, PETRI_TRANSITIONS=110} [2025-03-17 19:45:14,623 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2025-03-17 19:45:14,623 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 110 transitions, 1040 flow [2025-03-17 19:45:14,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.5) internal successors, (483), 42 states have internal predecessors, (483), 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 19:45:14,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:14,623 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:14,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-17 19:45:14,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-17 19:45:14,824 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:14,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash -511019906, now seen corresponding path program 5 times [2025-03-17 19:45:14,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612030988] [2025-03-17 19:45:14,824 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:45:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:14,831 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-17 19:45:14,843 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 19:45:14,843 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:45:14,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612030988] [2025-03-17 19:45:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612030988] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321150980] [2025-03-17 19:45:15,195 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 19:45:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:15,197 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:15,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-17 19:45:15,282 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-17 19:45:15,306 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 19:45:15,307 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 19:45:15,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:15,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-17 19:45:15,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:15,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 19:45:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:15,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:15,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 19:45:15,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-17 19:45:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321150980] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:15,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:15,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2025-03-17 19:45:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436822799] [2025-03-17 19:45:15,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:15,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 19:45:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:15,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 19:45:15,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 19:45:16,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-17 19:45:16,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 110 transitions, 1040 flow. Second operand has 42 states, 42 states have (on average 11.5) internal successors, (483), 42 states have internal predecessors, (483), 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 19:45:16,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:16,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-17 19:45:16,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:17,927 INFO L124 PetriNetUnfolderBase]: 3165/6068 cut-off events. [2025-03-17 19:45:17,927 INFO L125 PetriNetUnfolderBase]: For 48270/48539 co-relation queries the response was YES. [2025-03-17 19:45:17,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31098 conditions, 6068 events. 3165/6068 cut-off events. For 48270/48539 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 39794 event pairs, 506 based on Foata normal form. 164/6204 useless extension candidates. Maximal degree in co-relation 31074. Up to 1521 conditions per place. [2025-03-17 19:45:17,964 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 685 selfloop transitions, 36 changer transitions 0/740 dead transitions. [2025-03-17 19:45:17,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 740 transitions, 9347 flow [2025-03-17 19:45:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-17 19:45:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-17 19:45:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 463 transitions. [2025-03-17 19:45:17,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34707646176911544 [2025-03-17 19:45:17,965 INFO L175 Difference]: Start difference. First operand has 171 places, 110 transitions, 1040 flow. Second operand 29 states and 463 transitions. [2025-03-17 19:45:17,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 740 transitions, 9347 flow [2025-03-17 19:45:17,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 740 transitions, 9276 flow, removed 3 selfloop flow, removed 24 redundant places. [2025-03-17 19:45:17,999 INFO L231 Difference]: Finished difference. Result has 175 places, 109 transitions, 1030 flow [2025-03-17 19:45:17,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1030, PETRI_PLACES=175, PETRI_TRANSITIONS=109} [2025-03-17 19:45:18,000 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2025-03-17 19:45:18,000 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 109 transitions, 1030 flow [2025-03-17 19:45:18,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.5) internal successors, (483), 42 states have internal predecessors, (483), 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 19:45:18,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:18,000 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2025-03-17 19:45:18,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:18,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:18,201 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:18,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash -358130691, now seen corresponding path program 6 times [2025-03-17 19:45:18,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:18,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473906910] [2025-03-17 19:45:18,201 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 19:45:18,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:18,208 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 6 equivalence classes. [2025-03-17 19:45:18,217 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 19:45:18,217 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-17 19:45:18,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:18,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:18,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473906910] [2025-03-17 19:45:18,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473906910] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:18,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018652852] [2025-03-17 19:45:18,488 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 19:45:18,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:18,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:18,490 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:18,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-17 19:45:18,576 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 6 equivalence classes. [2025-03-17 19:45:18,600 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 19:45:18,600 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-17 19:45:18,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:18,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-17 19:45:18,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:18,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:19,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018652852] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:19,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:19,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 57 [2025-03-17 19:45:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644890855] [2025-03-17 19:45:19,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:19,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 19:45:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:19,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 19:45:19,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=2772, Unknown=0, NotChecked=0, Total=3306 [2025-03-17 19:45:19,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:45:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 109 transitions, 1030 flow. Second operand has 58 states, 58 states have (on average 10.413793103448276) internal successors, (604), 58 states have internal predecessors, (604), 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 19:45:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:45:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:20,576 INFO L124 PetriNetUnfolderBase]: 3796/6892 cut-off events. [2025-03-17 19:45:20,576 INFO L125 PetriNetUnfolderBase]: For 56144/56420 co-relation queries the response was YES. [2025-03-17 19:45:20,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36282 conditions, 6892 events. 3796/6892 cut-off events. For 56144/56420 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 44324 event pairs, 1872 based on Foata normal form. 38/6824 useless extension candidates. Maximal degree in co-relation 36259. Up to 3365 conditions per place. [2025-03-17 19:45:20,624 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 289 selfloop transitions, 32 changer transitions 72/403 dead transitions. [2025-03-17 19:45:20,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 403 transitions, 5100 flow [2025-03-17 19:45:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-17 19:45:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-17 19:45:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 408 transitions. [2025-03-17 19:45:20,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3411371237458194 [2025-03-17 19:45:20,625 INFO L175 Difference]: Start difference. First operand has 175 places, 109 transitions, 1030 flow. Second operand 26 states and 408 transitions. [2025-03-17 19:45:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 403 transitions, 5100 flow [2025-03-17 19:45:20,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 403 transitions, 4727 flow, removed 2 selfloop flow, removed 28 redundant places. [2025-03-17 19:45:20,676 INFO L231 Difference]: Finished difference. Result has 171 places, 105 transitions, 977 flow [2025-03-17 19:45:20,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=977, PETRI_PLACES=171, PETRI_TRANSITIONS=105} [2025-03-17 19:45:20,676 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2025-03-17 19:45:20,676 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 105 transitions, 977 flow [2025-03-17 19:45:20,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 10.413793103448276) internal successors, (604), 58 states have internal predecessors, (604), 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 19:45:20,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:20,677 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:20,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-17 19:45:20,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-17 19:45:20,877 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-17 19:45:20,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1904951872, now seen corresponding path program 6 times [2025-03-17 19:45:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724238117] [2025-03-17 19:45:20,878 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 19:45:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:20,885 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 6 equivalence classes. [2025-03-17 19:45:20,894 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 48 of 48 statements. [2025-03-17 19:45:20,894 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-17 19:45:20,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:21,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:21,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724238117] [2025-03-17 19:45:21,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724238117] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:21,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683332571] [2025-03-17 19:45:21,191 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 19:45:21,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:21,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:21,193 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:21,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-17 19:45:21,292 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 6 equivalence classes. [2025-03-17 19:45:21,320 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 48 of 48 statements. [2025-03-17 19:45:21,320 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-17 19:45:21,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:21,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-17 19:45:21,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:21,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683332571] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:21,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:21,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 57 [2025-03-17 19:45:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518883380] [2025-03-17 19:45:21,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:21,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 19:45:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:21,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 19:45:21,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=2776, Unknown=0, NotChecked=0, Total=3306 [2025-03-17 19:45:22,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-17 19:45:22,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 105 transitions, 977 flow. Second operand has 58 states, 58 states have (on average 10.448275862068966) internal successors, (606), 58 states have internal predecessors, (606), 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 19:45:22,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:22,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-17 19:45:22,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand