./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-sum.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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:44:03,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:44:03,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:44:03,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:44:03,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:44:03,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:44:03,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:44:03,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:44:03,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:44:03,172 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:44:03,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:44:03,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:44:03,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:44:03,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:44:03,173 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:44:03,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:44:03,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:44:03,175 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:44:03,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:44:03,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:44:03,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:44:03,176 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 -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2025-03-09 06:44:03,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:44:03,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:44:03,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:44:03,385 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:44:03,385 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:44:03,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2025-03-09 06:44:04,491 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bc55500/e0599f06d7de4f9ab2efc59fcfe3b591/FLAGab827f9fe [2025-03-09 06:44:04,715 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:44:04,715 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2025-03-09 06:44:04,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bc55500/e0599f06d7de4f9ab2efc59fcfe3b591/FLAGab827f9fe [2025-03-09 06:44:05,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bc55500/e0599f06d7de4f9ab2efc59fcfe3b591 [2025-03-09 06:44:05,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:44:05,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:44:05,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:44:05,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:44:05,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:44:05,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25821b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05, skipping insertion in model container [2025-03-09 06:44:05,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:44:05,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:44:05,234 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:44:05,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:44:05,273 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:44:05,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05 WrapperNode [2025-03-09 06:44:05,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:44:05,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:44:05,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:44:05,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:44:05,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,304 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 137 [2025-03-09 06:44:05,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:44:05,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:44:05,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:44:05,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:44:05,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,335 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-03-09 06:44:05,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:44:05,353 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:44:05,354 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:44:05,354 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:44:05,359 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (1/1) ... [2025-03-09 06:44:05,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:44:05,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:05,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:44:05,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:44:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:44:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:44:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:44:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:44:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:44:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:44:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:44:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:44:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:44:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:44:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:44:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:44:05,409 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:44:05,481 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:44:05,482 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:44:05,781 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:44:05,782 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:44:05,950 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:44:05,951 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:44:05,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:44:05 BoogieIcfgContainer [2025-03-09 06:44:05,951 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:44:05,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:44:05,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:44:05,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:44:05,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:44:05" (1/3) ... [2025-03-09 06:44:05,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1cef2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:44:05, skipping insertion in model container [2025-03-09 06:44:05,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:05" (2/3) ... [2025-03-09 06:44:05,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1cef2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:44:05, skipping insertion in model container [2025-03-09 06:44:05,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:44:05" (3/3) ... [2025-03-09 06:44:05,961 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2025-03-09 06:44:05,972 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:44:05,973 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-three-array-sum.wvr.c that has 4 procedures, 57 locations, 1 initial locations, 6 loop locations, and 14 error locations. [2025-03-09 06:44:05,973 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:44:06,038 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:44:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2025-03-09 06:44:06,099 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2025-03-09 06:44:06,103 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:44:06,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 7/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-03-09 06:44:06,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2025-03-09 06:44:06,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2025-03-09 06:44:06,123 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:44:06,133 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;@749c80b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:44:06,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-09 06:44:06,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:44:06,136 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:44:06,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:44:06,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:06,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:44:06,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:06,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash 529530, now seen corresponding path program 1 times [2025-03-09 06:44:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597377201] [2025-03-09 06:44:06,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:06,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:44:06,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:44:06,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:06,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:06,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597377201] [2025-03-09 06:44:06,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597377201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:06,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:06,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661525211] [2025-03-09 06:44:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:06,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:06,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:06,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:06,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:06,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-09 06:44:06,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:06,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:06,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-09 06:44:06,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:06,648 INFO L124 PetriNetUnfolderBase]: 827/1560 cut-off events. [2025-03-09 06:44:06,649 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-03-09 06:44:06,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2780 conditions, 1560 events. 827/1560 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9072 event pairs, 594 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2486. Up to 1110 conditions per place. [2025-03-09 06:44:06,665 INFO L140 encePairwiseOnDemand]: 52/63 looper letters, 28 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2025-03-09 06:44:06,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 197 flow [2025-03-09 06:44:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-03-09 06:44:06,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2025-03-09 06:44:06,681 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 127 transitions. [2025-03-09 06:44:06,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 197 flow [2025-03-09 06:44:06,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 188 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:44:06,689 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 132 flow [2025-03-09 06:44:06,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2025-03-09 06:44:06,694 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2025-03-09 06:44:06,695 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 132 flow [2025-03-09 06:44:06,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:06,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:06,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-09 06:44:06,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:44:06,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:06,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 16415863, now seen corresponding path program 1 times [2025-03-09 06:44:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444081381] [2025-03-09 06:44:06,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:06,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 06:44:06,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 06:44:06,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:06,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444081381] [2025-03-09 06:44:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444081381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:06,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206361940] [2025-03-09 06:44:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:06,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:06,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:06,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:06,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-09 06:44:06,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:06,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:06,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-09 06:44:06,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:06,989 INFO L124 PetriNetUnfolderBase]: 854/1452 cut-off events. [2025-03-09 06:44:06,990 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-03-09 06:44:06,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 1452 events. 854/1452 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7494 event pairs, 638 based on Foata normal form. 3/1104 useless extension candidates. Maximal degree in co-relation 2639. Up to 1177 conditions per place. [2025-03-09 06:44:06,999 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 35 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2025-03-09 06:44:07,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 254 flow [2025-03-09 06:44:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-09 06:44:07,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2025-03-09 06:44:07,002 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 132 flow. Second operand 4 states and 136 transitions. [2025-03-09 06:44:07,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 254 flow [2025-03-09 06:44:07,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:07,004 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 198 flow [2025-03-09 06:44:07,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2025-03-09 06:44:07,005 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2025-03-09 06:44:07,005 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 198 flow [2025-03-09 06:44:07,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:07,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:07,006 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:44:07,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:44:07,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:07,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash -580789642, now seen corresponding path program 1 times [2025-03-09 06:44:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455854542] [2025-03-09 06:44:07,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:07,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:44:07,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:44:07,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:07,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455854542] [2025-03-09 06:44:07,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455854542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443678889] [2025-03-09 06:44:07,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:07,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:07,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:07,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:07,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:44:07,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:44:07,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:44:07,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:07,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:07,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:07,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:07,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443678889] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:07,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-09 06:44:07,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63971384] [2025-03-09 06:44:07,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:07,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:44:07,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:07,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:44:07,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:44:07,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-09 06:44:07,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:07,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:07,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-09 06:44:07,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:07,571 INFO L124 PetriNetUnfolderBase]: 863/1488 cut-off events. [2025-03-09 06:44:07,572 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-09 06:44:07,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1488 events. 863/1488 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7824 event pairs, 638 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 2653. Up to 1180 conditions per place. [2025-03-09 06:44:07,582 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 35 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2025-03-09 06:44:07,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 462 flow [2025-03-09 06:44:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:44:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:44:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2025-03-09 06:44:07,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2025-03-09 06:44:07,587 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 198 flow. Second operand 10 states and 301 transitions. [2025-03-09 06:44:07,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 462 flow [2025-03-09 06:44:07,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:44:07,589 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 442 flow [2025-03-09 06:44:07,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=442, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2025-03-09 06:44:07,591 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2025-03-09 06:44:07,591 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 442 flow [2025-03-09 06:44:07,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:07,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:07,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:07,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:07,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:07,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:07,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1047794466, now seen corresponding path program 1 times [2025-03-09 06:44:07,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:07,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344281484] [2025-03-09 06:44:07,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:07,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:44:07,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:44:07,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:07,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344281484] [2025-03-09 06:44:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344281484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957853857] [2025-03-09 06:44:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:07,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:07,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:07,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:07,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-09 06:44:07,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 442 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:07,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:07,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-09 06:44:07,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:08,158 INFO L124 PetriNetUnfolderBase]: 1722/2851 cut-off events. [2025-03-09 06:44:08,158 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-03-09 06:44:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5482 conditions, 2851 events. 1722/2851 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16678 event pairs, 732 based on Foata normal form. 86/2258 useless extension candidates. Maximal degree in co-relation 5387. Up to 1837 conditions per place. [2025-03-09 06:44:08,171 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 102 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2025-03-09 06:44:08,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 730 flow [2025-03-09 06:44:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-03-09 06:44:08,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2025-03-09 06:44:08,172 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 442 flow. Second operand 4 states and 176 transitions. [2025-03-09 06:44:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 730 flow [2025-03-09 06:44:08,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 635 flow, removed 25 selfloop flow, removed 4 redundant places. [2025-03-09 06:44:08,176 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 376 flow [2025-03-09 06:44:08,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2025-03-09 06:44:08,176 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 11 predicate places. [2025-03-09 06:44:08,176 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 376 flow [2025-03-09 06:44:08,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:08,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:08,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:08,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:44:08,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:08,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1863825399, now seen corresponding path program 1 times [2025-03-09 06:44:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:08,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832315773] [2025-03-09 06:44:08,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:08,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:44:08,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:44:08,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:08,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:08,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:08,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832315773] [2025-03-09 06:44:08,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832315773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:08,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860811203] [2025-03-09 06:44:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:08,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:44:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:08,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:44:08,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:44:08,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-03-09 06:44:08,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:08,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:08,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-03-09 06:44:08,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:08,539 INFO L124 PetriNetUnfolderBase]: 1896/3536 cut-off events. [2025-03-09 06:44:08,539 INFO L125 PetriNetUnfolderBase]: For 1158/1306 co-relation queries the response was YES. [2025-03-09 06:44:08,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 3536 events. 1896/3536 cut-off events. For 1158/1306 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 23150 event pairs, 957 based on Foata normal form. 0/2954 useless extension candidates. Maximal degree in co-relation 7307. Up to 1978 conditions per place. [2025-03-09 06:44:08,558 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 88 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2025-03-09 06:44:08,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 618 flow [2025-03-09 06:44:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:44:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:44:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2025-03-09 06:44:08,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-03-09 06:44:08,560 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 376 flow. Second operand 3 states and 135 transitions. [2025-03-09 06:44:08,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 618 flow [2025-03-09 06:44:08,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:08,563 INFO L231 Difference]: Finished difference. Result has 74 places, 96 transitions, 394 flow [2025-03-09 06:44:08,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=74, PETRI_TRANSITIONS=96} [2025-03-09 06:44:08,563 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2025-03-09 06:44:08,563 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 96 transitions, 394 flow [2025-03-09 06:44:08,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:08,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:08,564 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:08,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:44:08,564 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:08,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash -976876366, now seen corresponding path program 1 times [2025-03-09 06:44:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995063462] [2025-03-09 06:44:08,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:08,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:44:08,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:44:08,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:08,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:08,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995063462] [2025-03-09 06:44:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995063462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:08,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:44:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279770341] [2025-03-09 06:44:08,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:08,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:08,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:08,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:08,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-03-09 06:44:08,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:08,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:08,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-03-09 06:44:08,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:09,085 INFO L124 PetriNetUnfolderBase]: 2672/4492 cut-off events. [2025-03-09 06:44:09,085 INFO L125 PetriNetUnfolderBase]: For 2085/2213 co-relation queries the response was YES. [2025-03-09 06:44:09,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10740 conditions, 4492 events. 2672/4492 cut-off events. For 2085/2213 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 26738 event pairs, 1732 based on Foata normal form. 114/4062 useless extension candidates. Maximal degree in co-relation 10606. Up to 2458 conditions per place. [2025-03-09 06:44:09,112 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 105 selfloop transitions, 40 changer transitions 0/167 dead transitions. [2025-03-09 06:44:09,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 167 transitions, 960 flow [2025-03-09 06:44:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2025-03-09 06:44:09,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2025-03-09 06:44:09,114 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 394 flow. Second operand 6 states and 258 transitions. [2025-03-09 06:44:09,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 167 transitions, 960 flow [2025-03-09 06:44:09,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 167 transitions, 951 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:09,123 INFO L231 Difference]: Finished difference. Result has 82 places, 122 transitions, 708 flow [2025-03-09 06:44:09,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=708, PETRI_PLACES=82, PETRI_TRANSITIONS=122} [2025-03-09 06:44:09,125 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 21 predicate places. [2025-03-09 06:44:09,125 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 122 transitions, 708 flow [2025-03-09 06:44:09,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:09,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:09,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:09,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:44:09,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:09,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash 134865051, now seen corresponding path program 1 times [2025-03-09 06:44:09,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167534468] [2025-03-09 06:44:09,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:09,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:44:09,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:44:09,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:09,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167534468] [2025-03-09 06:44:09,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167534468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:09,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661532142] [2025-03-09 06:44:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:09,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:09,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:09,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:09,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-09 06:44:09,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 122 transitions, 708 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:09,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:09,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-09 06:44:09,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:09,680 INFO L124 PetriNetUnfolderBase]: 3936/6698 cut-off events. [2025-03-09 06:44:09,680 INFO L125 PetriNetUnfolderBase]: For 4654/4710 co-relation queries the response was YES. [2025-03-09 06:44:09,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16790 conditions, 6698 events. 3936/6698 cut-off events. For 4654/4710 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 42909 event pairs, 2364 based on Foata normal form. 276/6496 useless extension candidates. Maximal degree in co-relation 16624. Up to 4245 conditions per place. [2025-03-09 06:44:09,738 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 137 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2025-03-09 06:44:09,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 160 transitions, 1140 flow [2025-03-09 06:44:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-03-09 06:44:09,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 06:44:09,739 INFO L175 Difference]: Start difference. First operand has 82 places, 122 transitions, 708 flow. Second operand 4 states and 168 transitions. [2025-03-09 06:44:09,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 160 transitions, 1140 flow [2025-03-09 06:44:09,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 160 transitions, 1136 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-09 06:44:09,748 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 725 flow [2025-03-09 06:44:09,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=725, PETRI_PLACES=87, PETRI_TRANSITIONS=123} [2025-03-09 06:44:09,748 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2025-03-09 06:44:09,748 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 725 flow [2025-03-09 06:44:09,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:09,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:09,749 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:09,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:44:09,749 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:09,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1970817732, now seen corresponding path program 1 times [2025-03-09 06:44:09,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:09,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405346556] [2025-03-09 06:44:09,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:09,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:09,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:44:09,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:44:09,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:09,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405346556] [2025-03-09 06:44:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405346556] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:09,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435935880] [2025-03-09 06:44:09,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:09,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:09,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:09,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:44:09,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:44:09,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:44:09,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:09,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:09,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:44:09,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:09,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435935880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:09,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:09,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2025-03-09 06:44:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757862523] [2025-03-09 06:44:09,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:09,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:09,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:09,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:09,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:44:09,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-03-09 06:44:09,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 725 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:09,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:09,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-03-09 06:44:09,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:10,355 INFO L124 PetriNetUnfolderBase]: 2585/4361 cut-off events. [2025-03-09 06:44:10,355 INFO L125 PetriNetUnfolderBase]: For 4239/4465 co-relation queries the response was YES. [2025-03-09 06:44:10,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11738 conditions, 4361 events. 2585/4361 cut-off events. For 4239/4465 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 24748 event pairs, 1883 based on Foata normal form. 48/4030 useless extension candidates. Maximal degree in co-relation 11569. Up to 3154 conditions per place. [2025-03-09 06:44:10,387 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 107 selfloop transitions, 24 changer transitions 2/155 dead transitions. [2025-03-09 06:44:10,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 155 transitions, 1100 flow [2025-03-09 06:44:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2025-03-09 06:44:10,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-03-09 06:44:10,388 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 725 flow. Second operand 6 states and 246 transitions. [2025-03-09 06:44:10,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 155 transitions, 1100 flow [2025-03-09 06:44:10,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 155 transitions, 1090 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:10,403 INFO L231 Difference]: Finished difference. Result has 92 places, 125 transitions, 795 flow [2025-03-09 06:44:10,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=795, PETRI_PLACES=92, PETRI_TRANSITIONS=125} [2025-03-09 06:44:10,404 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2025-03-09 06:44:10,404 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 125 transitions, 795 flow [2025-03-09 06:44:10,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:10,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:10,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:10,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:10,610 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,SelfDestructingSolverStorable7 [2025-03-09 06:44:10,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:10,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1962974817, now seen corresponding path program 1 times [2025-03-09 06:44:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:10,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002724738] [2025-03-09 06:44:10,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:10,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:44:10,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:44:10,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:10,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:10,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002724738] [2025-03-09 06:44:10,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002724738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:10,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:10,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919354986] [2025-03-09 06:44:10,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:10,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:10,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:10,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:10,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-09 06:44:10,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 125 transitions, 795 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:10,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:10,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-09 06:44:10,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:11,218 INFO L124 PetriNetUnfolderBase]: 4650/8008 cut-off events. [2025-03-09 06:44:11,218 INFO L125 PetriNetUnfolderBase]: For 8524/8821 co-relation queries the response was YES. [2025-03-09 06:44:11,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21066 conditions, 8008 events. 4650/8008 cut-off events. For 8524/8821 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 51969 event pairs, 2213 based on Foata normal form. 127/7339 useless extension candidates. Maximal degree in co-relation 20891. Up to 4089 conditions per place. [2025-03-09 06:44:11,253 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 151 selfloop transitions, 3 changer transitions 0/174 dead transitions. [2025-03-09 06:44:11,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 174 transitions, 1343 flow [2025-03-09 06:44:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2025-03-09 06:44:11,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2025-03-09 06:44:11,254 INFO L175 Difference]: Start difference. First operand has 92 places, 125 transitions, 795 flow. Second operand 4 states and 169 transitions. [2025-03-09 06:44:11,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 174 transitions, 1343 flow [2025-03-09 06:44:11,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 174 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:11,263 INFO L231 Difference]: Finished difference. Result has 95 places, 127 transitions, 790 flow [2025-03-09 06:44:11,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=790, PETRI_PLACES=95, PETRI_TRANSITIONS=127} [2025-03-09 06:44:11,264 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2025-03-09 06:44:11,264 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 127 transitions, 790 flow [2025-03-09 06:44:11,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:11,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:11,264 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:44:11,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:44:11,265 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:11,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1324295241, now seen corresponding path program 2 times [2025-03-09 06:44:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743674883] [2025-03-09 06:44:11,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:11,272 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:44:11,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:44:11,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:11,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:44:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:11,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743674883] [2025-03-09 06:44:11,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743674883] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:11,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358554100] [2025-03-09 06:44:11,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:11,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:11,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:11,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:44:11,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:44:11,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:44:11,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:11,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:11,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:44:11,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:44:11,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:44:11,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358554100] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:11,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:11,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:44:11,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171228884] [2025-03-09 06:44:11,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:11,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:11,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:11,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:11,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-09 06:44:11,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 127 transitions, 790 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:11,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:11,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-09 06:44:11,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:11,822 INFO L124 PetriNetUnfolderBase]: 3253/6229 cut-off events. [2025-03-09 06:44:11,823 INFO L125 PetriNetUnfolderBase]: For 6363/6657 co-relation queries the response was YES. [2025-03-09 06:44:11,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16897 conditions, 6229 events. 3253/6229 cut-off events. For 6363/6657 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 43298 event pairs, 2480 based on Foata normal form. 100/5900 useless extension candidates. Maximal degree in co-relation 16723. Up to 4534 conditions per place. [2025-03-09 06:44:11,855 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 89 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2025-03-09 06:44:11,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 990 flow [2025-03-09 06:44:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:44:11,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-03-09 06:44:11,857 INFO L175 Difference]: Start difference. First operand has 95 places, 127 transitions, 790 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:44:11,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 990 flow [2025-03-09 06:44:11,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 988 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:11,868 INFO L231 Difference]: Finished difference. Result has 96 places, 126 transitions, 810 flow [2025-03-09 06:44:11,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=810, PETRI_PLACES=96, PETRI_TRANSITIONS=126} [2025-03-09 06:44:11,869 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2025-03-09 06:44:11,869 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 126 transitions, 810 flow [2025-03-09 06:44:11,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:11,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:11,869 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-09 06:44:11,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:12,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:12,070 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:12,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1425033367, now seen corresponding path program 1 times [2025-03-09 06:44:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139624562] [2025-03-09 06:44:12,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:12,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:44:12,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:44:12,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:12,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-09 06:44:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139624562] [2025-03-09 06:44:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139624562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:12,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:12,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719639750] [2025-03-09 06:44:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:12,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:12,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:12,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:12,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-03-09 06:44:12,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 126 transitions, 810 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:12,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:12,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-03-09 06:44:12,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:12,655 INFO L124 PetriNetUnfolderBase]: 3243/6189 cut-off events. [2025-03-09 06:44:12,655 INFO L125 PetriNetUnfolderBase]: For 5993/6281 co-relation queries the response was YES. [2025-03-09 06:44:12,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16610 conditions, 6189 events. 3243/6189 cut-off events. For 5993/6281 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 43200 event pairs, 2480 based on Foata normal form. 95/5849 useless extension candidates. Maximal degree in co-relation 16504. Up to 4498 conditions per place. [2025-03-09 06:44:12,696 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 65 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2025-03-09 06:44:12,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 754 flow [2025-03-09 06:44:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2025-03-09 06:44:12,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2025-03-09 06:44:12,698 INFO L175 Difference]: Start difference. First operand has 96 places, 126 transitions, 810 flow. Second operand 4 states and 158 transitions. [2025-03-09 06:44:12,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 754 flow [2025-03-09 06:44:12,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 684 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-09 06:44:12,709 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 561 flow [2025-03-09 06:44:12,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=561, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2025-03-09 06:44:12,709 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2025-03-09 06:44:12,710 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 561 flow [2025-03-09 06:44:12,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:12,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:12,710 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:12,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:44:12,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:12,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1862717215, now seen corresponding path program 1 times [2025-03-09 06:44:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755472770] [2025-03-09 06:44:12,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:12,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:44:12,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:44:12,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:12,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755472770] [2025-03-09 06:44:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755472770] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064169164] [2025-03-09 06:44:12,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:12,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:12,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:12,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:12,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:44:12,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:44:12,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:44:12,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:12,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:12,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:12,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:12,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:12,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064169164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:12,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:12,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:44:12,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328478085] [2025-03-09 06:44:12,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:12,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:44:12,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:12,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:44:12,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:44:12,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-09 06:44:12,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 561 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:12,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:12,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-09 06:44:12,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:13,556 INFO L124 PetriNetUnfolderBase]: 3645/6017 cut-off events. [2025-03-09 06:44:13,556 INFO L125 PetriNetUnfolderBase]: For 4974/5370 co-relation queries the response was YES. [2025-03-09 06:44:13,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 6017 events. 3645/6017 cut-off events. For 4974/5370 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 36843 event pairs, 925 based on Foata normal form. 271/5752 useless extension candidates. Maximal degree in co-relation 16576. Up to 1856 conditions per place. [2025-03-09 06:44:13,580 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 151 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2025-03-09 06:44:13,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 181 transitions, 1167 flow [2025-03-09 06:44:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2025-03-09 06:44:13,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2025-03-09 06:44:13,582 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 561 flow. Second operand 6 states and 258 transitions. [2025-03-09 06:44:13,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 181 transitions, 1167 flow [2025-03-09 06:44:13,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 181 transitions, 1135 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:13,594 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 543 flow [2025-03-09 06:44:13,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2025-03-09 06:44:13,595 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2025-03-09 06:44:13,595 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 543 flow [2025-03-09 06:44:13,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:13,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:13,595 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:13,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:13,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:13,796 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:13,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1508646664, now seen corresponding path program 1 times [2025-03-09 06:44:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:13,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113807907] [2025-03-09 06:44:13,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:13,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:44:13,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:44:13,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:13,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-09 06:44:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113807907] [2025-03-09 06:44:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113807907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108854808] [2025-03-09 06:44:13,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:13,936 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) [2025-03-09 06:44:13,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:44:13,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:44:13,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:44:13,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:13,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:13,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 06:44:13,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:44:14,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:44:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108854808] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:14,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:14,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2025-03-09 06:44:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921108492] [2025-03-09 06:44:14,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:14,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 06:44:14,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:14,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 06:44:14,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2025-03-09 06:44:14,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-09 06:44:14,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 543 flow. Second operand has 21 states, 21 states have (on average 23.285714285714285) internal successors, (489), 21 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:14,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-09 06:44:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:15,280 INFO L124 PetriNetUnfolderBase]: 6245/11377 cut-off events. [2025-03-09 06:44:15,280 INFO L125 PetriNetUnfolderBase]: For 16407/16936 co-relation queries the response was YES. [2025-03-09 06:44:15,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32085 conditions, 11377 events. 6245/11377 cut-off events. For 16407/16936 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 82333 event pairs, 4602 based on Foata normal form. 96/10516 useless extension candidates. Maximal degree in co-relation 31990. Up to 4469 conditions per place. [2025-03-09 06:44:15,332 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 68 selfloop transitions, 52 changer transitions 0/140 dead transitions. [2025-03-09 06:44:15,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 140 transitions, 971 flow [2025-03-09 06:44:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:44:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:44:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2025-03-09 06:44:15,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2025-03-09 06:44:15,333 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 543 flow. Second operand 12 states and 352 transitions. [2025-03-09 06:44:15,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 140 transitions, 971 flow [2025-03-09 06:44:15,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 919 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-09 06:44:15,349 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 678 flow [2025-03-09 06:44:15,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=678, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2025-03-09 06:44:15,350 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 41 predicate places. [2025-03-09 06:44:15,350 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 678 flow [2025-03-09 06:44:15,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 23.285714285714285) internal successors, (489), 21 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:15,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:15,351 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:15,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:44:15,555 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,SelfDestructingSolverStorable12 [2025-03-09 06:44:15,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:15,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1909658321, now seen corresponding path program 1 times [2025-03-09 06:44:15,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:15,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212382875] [2025-03-09 06:44:15,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:15,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:15,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:44:15,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:44:15,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:15,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:15,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:15,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212382875] [2025-03-09 06:44:15,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212382875] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:15,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202619977] [2025-03-09 06:44:15,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:15,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:15,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:15,633 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) [2025-03-09 06:44:15,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:44:15,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:44:15,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:44:15,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:15,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:15,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:15,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:15,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202619977] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:15,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:15,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:44:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340787827] [2025-03-09 06:44:15,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:15,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:44:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:15,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:44:15,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:44:15,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-09 06:44:15,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 678 flow. Second operand has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:15,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:15,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-09 06:44:15,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:17,263 INFO L124 PetriNetUnfolderBase]: 12813/20265 cut-off events. [2025-03-09 06:44:17,263 INFO L125 PetriNetUnfolderBase]: For 16361/17941 co-relation queries the response was YES. [2025-03-09 06:44:17,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51949 conditions, 20265 events. 12813/20265 cut-off events. For 16361/17941 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 137812 event pairs, 3523 based on Foata normal form. 1394/19673 useless extension candidates. Maximal degree in co-relation 51843. Up to 8012 conditions per place. [2025-03-09 06:44:17,386 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 238 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2025-03-09 06:44:17,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 274 transitions, 1776 flow [2025-03-09 06:44:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:44:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:44:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2025-03-09 06:44:17,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6936507936507936 [2025-03-09 06:44:17,388 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 678 flow. Second operand 10 states and 437 transitions. [2025-03-09 06:44:17,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 274 transitions, 1776 flow [2025-03-09 06:44:17,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 274 transitions, 1678 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-03-09 06:44:17,424 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 658 flow [2025-03-09 06:44:17,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=658, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2025-03-09 06:44:17,425 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2025-03-09 06:44:17,425 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 658 flow [2025-03-09 06:44:17,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:17,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:17,425 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2025-03-09 06:44:17,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 06:44:17,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:17,626 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:17,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -480943881, now seen corresponding path program 2 times [2025-03-09 06:44:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330756353] [2025-03-09 06:44:17,626 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:17,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-09 06:44:17,637 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-09 06:44:17,637 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:17,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-09 06:44:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:17,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330756353] [2025-03-09 06:44:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330756353] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699042865] [2025-03-09 06:44:17,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:17,667 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) [2025-03-09 06:44:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:44:17,714 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-09 06:44:17,723 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-09 06:44:17,723 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:17,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:17,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:44:17,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-09 06:44:17,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-09 06:44:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699042865] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:17,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:17,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:44:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756006041] [2025-03-09 06:44:17,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:17,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:17,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:17,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:17,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:17,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-09 06:44:17,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 658 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:17,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:17,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-09 06:44:17,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:19,235 INFO L124 PetriNetUnfolderBase]: 11997/19999 cut-off events. [2025-03-09 06:44:19,235 INFO L125 PetriNetUnfolderBase]: For 25024/26428 co-relation queries the response was YES. [2025-03-09 06:44:19,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57751 conditions, 19999 events. 11997/19999 cut-off events. For 25024/26428 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 144427 event pairs, 8898 based on Foata normal form. 392/19349 useless extension candidates. Maximal degree in co-relation 57657. Up to 16218 conditions per place. [2025-03-09 06:44:19,342 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 55 selfloop transitions, 43 changer transitions 0/118 dead transitions. [2025-03-09 06:44:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 118 transitions, 834 flow [2025-03-09 06:44:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:44:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:44:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-03-09 06:44:19,343 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-03-09 06:44:19,343 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 658 flow. Second operand 5 states and 145 transitions. [2025-03-09 06:44:19,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 118 transitions, 834 flow [2025-03-09 06:44:19,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 118 transitions, 787 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-09 06:44:19,394 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 677 flow [2025-03-09 06:44:19,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2025-03-09 06:44:19,395 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 41 predicate places. [2025-03-09 06:44:19,395 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 677 flow [2025-03-09 06:44:19,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:19,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:19,395 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:19,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:19,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:19,596 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:19,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1272279807, now seen corresponding path program 1 times [2025-03-09 06:44:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073584316] [2025-03-09 06:44:19,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:19,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:44:19,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:44:19,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:19,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 06:44:19,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:19,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073584316] [2025-03-09 06:44:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073584316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:19,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:19,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:44:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093610210] [2025-03-09 06:44:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:19,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:19,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:19,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:19,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:19,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-03-09 06:44:19,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 677 flow. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:19,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:19,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-03-09 06:44:19,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:21,155 INFO L124 PetriNetUnfolderBase]: 14489/23499 cut-off events. [2025-03-09 06:44:21,155 INFO L125 PetriNetUnfolderBase]: For 25203/26123 co-relation queries the response was YES. [2025-03-09 06:44:21,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64542 conditions, 23499 events. 14489/23499 cut-off events. For 25203/26123 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 168131 event pairs, 10410 based on Foata normal form. 128/21040 useless extension candidates. Maximal degree in co-relation 46484. Up to 18791 conditions per place. [2025-03-09 06:44:21,261 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 73 selfloop transitions, 15 changer transitions 28/135 dead transitions. [2025-03-09 06:44:21,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 135 transitions, 977 flow [2025-03-09 06:44:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2025-03-09 06:44:21,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6058201058201058 [2025-03-09 06:44:21,262 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 677 flow. Second operand 6 states and 229 transitions. [2025-03-09 06:44:21,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 135 transitions, 977 flow [2025-03-09 06:44:21,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 135 transitions, 899 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:21,324 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 545 flow [2025-03-09 06:44:21,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=545, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2025-03-09 06:44:21,325 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2025-03-09 06:44:21,325 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 545 flow [2025-03-09 06:44:21,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:21,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:21,325 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:21,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:44:21,325 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:21,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1829748594, now seen corresponding path program 1 times [2025-03-09 06:44:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362533784] [2025-03-09 06:44:21,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:21,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:44:21,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:44:21,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:21,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:21,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:21,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362533784] [2025-03-09 06:44:21,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362533784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:21,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675609139] [2025-03-09 06:44:21,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:21,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:21,397 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) [2025-03-09 06:44:21,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:44:21,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:44:21,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:44:21,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:21,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:21,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 06:44:21,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:21,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:21,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675609139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-03-09 06:44:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589390805] [2025-03-09 06:44:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:21,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:21,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:21,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:44:21,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2025-03-09 06:44:21,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:21,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:21,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2025-03-09 06:44:21,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:23,321 INFO L124 PetriNetUnfolderBase]: 17169/25290 cut-off events. [2025-03-09 06:44:23,321 INFO L125 PetriNetUnfolderBase]: For 26116/27934 co-relation queries the response was YES. [2025-03-09 06:44:23,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73330 conditions, 25290 events. 17169/25290 cut-off events. For 26116/27934 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 162839 event pairs, 1808 based on Foata normal form. 996/25593 useless extension candidates. Maximal degree in co-relation 53318. Up to 9848 conditions per place. [2025-03-09 06:44:23,521 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 135 selfloop transitions, 7 changer transitions 0/157 dead transitions. [2025-03-09 06:44:23,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 157 transitions, 1053 flow [2025-03-09 06:44:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-09 06:44:23,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2025-03-09 06:44:23,523 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 545 flow. Second operand 4 states and 159 transitions. [2025-03-09 06:44:23,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 157 transitions, 1053 flow [2025-03-09 06:44:23,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 961 flow, removed 16 selfloop flow, removed 10 redundant places. [2025-03-09 06:44:23,678 INFO L231 Difference]: Finished difference. Result has 89 places, 105 transitions, 475 flow [2025-03-09 06:44:23,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=89, PETRI_TRANSITIONS=105} [2025-03-09 06:44:23,678 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2025-03-09 06:44:23,679 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 105 transitions, 475 flow [2025-03-09 06:44:23,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:23,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:23,679 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:23,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:44:23,879 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 [2025-03-09 06:44:23,879 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:23,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1829748595, now seen corresponding path program 1 times [2025-03-09 06:44:23,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:23,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224814784] [2025-03-09 06:44:23,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:23,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:44:23,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:44:23,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:23,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224814784] [2025-03-09 06:44:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224814784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297042502] [2025-03-09 06:44:23,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:23,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:23,963 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) [2025-03-09 06:44:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:44:24,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:44:24,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:44:24,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:24,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:24,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:44:24,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:24,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:24,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297042502] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:24,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:24,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:44:24,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079709193] [2025-03-09 06:44:24,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:24,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:44:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:24,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:44:24,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:44:24,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-09 06:44:24,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 105 transitions, 475 flow. Second operand has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:24,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:24,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-09 06:44:24,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:26,167 INFO L124 PetriNetUnfolderBase]: 21053/34032 cut-off events. [2025-03-09 06:44:26,168 INFO L125 PetriNetUnfolderBase]: For 37009/38493 co-relation queries the response was YES. [2025-03-09 06:44:26,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93649 conditions, 34032 events. 21053/34032 cut-off events. For 37009/38493 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 250708 event pairs, 3598 based on Foata normal form. 1884/34987 useless extension candidates. Maximal degree in co-relation 67784. Up to 8676 conditions per place. [2025-03-09 06:44:26,484 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 216 selfloop transitions, 10 changer transitions 0/242 dead transitions. [2025-03-09 06:44:26,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 242 transitions, 1497 flow [2025-03-09 06:44:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:44:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:44:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2025-03-09 06:44:26,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-03-09 06:44:26,485 INFO L175 Difference]: Start difference. First operand has 89 places, 105 transitions, 475 flow. Second operand 7 states and 287 transitions. [2025-03-09 06:44:26,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 242 transitions, 1497 flow [2025-03-09 06:44:26,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 242 transitions, 1475 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:26,581 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 526 flow [2025-03-09 06:44:26,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2025-03-09 06:44:26,581 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2025-03-09 06:44:26,581 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 526 flow [2025-03-09 06:44:26,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:26,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:26,581 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:26,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 06:44:26,782 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 [2025-03-09 06:44:26,782 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:26,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash 345611389, now seen corresponding path program 2 times [2025-03-09 06:44:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174959020] [2025-03-09 06:44:26,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:26,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:26,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-09 06:44:26,797 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 30 statements. [2025-03-09 06:44:26,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:26,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-09 06:44:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174959020] [2025-03-09 06:44:26,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174959020] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282904890] [2025-03-09 06:44:26,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:26,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:26,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:26,822 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) [2025-03-09 06:44:26,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:44:26,880 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-09 06:44:26,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 30 statements. [2025-03-09 06:44:26,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:26,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:26,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:44:26,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-09 06:44:26,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-09 06:44:26,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282904890] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:26,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:26,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:44:26,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357564382] [2025-03-09 06:44:26,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:26,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:26,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:26,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:26,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:26,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-09 06:44:26,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:26,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:26,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-09 06:44:26,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:28,319 INFO L124 PetriNetUnfolderBase]: 15709/25406 cut-off events. [2025-03-09 06:44:28,319 INFO L125 PetriNetUnfolderBase]: For 44251/44691 co-relation queries the response was YES. [2025-03-09 06:44:28,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74200 conditions, 25406 events. 15709/25406 cut-off events. For 44251/44691 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 183996 event pairs, 6264 based on Foata normal form. 564/24909 useless extension candidates. Maximal degree in co-relation 54868. Up to 12853 conditions per place. [2025-03-09 06:44:28,487 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 101 selfloop transitions, 11 changer transitions 0/131 dead transitions. [2025-03-09 06:44:28,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 851 flow [2025-03-09 06:44:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:28,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-03-09 06:44:28,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-03-09 06:44:28,488 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 526 flow. Second operand 4 states and 152 transitions. [2025-03-09 06:44:28,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 851 flow [2025-03-09 06:44:28,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 815 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-09 06:44:28,607 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 513 flow [2025-03-09 06:44:28,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2025-03-09 06:44:28,608 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2025-03-09 06:44:28,608 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 513 flow [2025-03-09 06:44:28,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:28,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:28,608 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:28,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 06:44:28,812 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 [2025-03-09 06:44:28,812 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:28,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1150321937, now seen corresponding path program 1 times [2025-03-09 06:44:28,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:28,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515902044] [2025-03-09 06:44:28,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:28,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 06:44:28,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 06:44:28,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:28,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-09 06:44:28,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:28,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515902044] [2025-03-09 06:44:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515902044] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:28,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733441708] [2025-03-09 06:44:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:28,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:28,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:28,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:28,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:28,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-09 06:44:28,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:28,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:28,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-09 06:44:28,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:30,632 INFO L124 PetriNetUnfolderBase]: 19881/32754 cut-off events. [2025-03-09 06:44:30,632 INFO L125 PetriNetUnfolderBase]: For 46175/46525 co-relation queries the response was YES. [2025-03-09 06:44:30,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94328 conditions, 32754 events. 19881/32754 cut-off events. For 46175/46525 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 243407 event pairs, 5742 based on Foata normal form. 678/32823 useless extension candidates. Maximal degree in co-relation 55055. Up to 12416 conditions per place. [2025-03-09 06:44:30,839 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 136 selfloop transitions, 10 changer transitions 0/161 dead transitions. [2025-03-09 06:44:30,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 1039 flow [2025-03-09 06:44:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-03-09 06:44:30,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-03-09 06:44:30,840 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 513 flow. Second operand 4 states and 162 transitions. [2025-03-09 06:44:30,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 1039 flow [2025-03-09 06:44:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 161 transitions, 973 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:44:30,962 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 514 flow [2025-03-09 06:44:30,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=514, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2025-03-09 06:44:30,962 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2025-03-09 06:44:30,962 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 514 flow [2025-03-09 06:44:30,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:30,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:30,963 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:30,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:44:30,963 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:30,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash 865391408, now seen corresponding path program 1 times [2025-03-09 06:44:30,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:30,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518280087] [2025-03-09 06:44:30,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:30,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:44:30,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:44:30,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:30,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:44:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518280087] [2025-03-09 06:44:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518280087] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047637157] [2025-03-09 06:44:31,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:31,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:31,032 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) [2025-03-09 06:44:31,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 06:44:31,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:44:31,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:44:31,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:31,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:31,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:44:31,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:44:31,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:44:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047637157] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:31,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-03-09 06:44:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531682065] [2025-03-09 06:44:31,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:31,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 06:44:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:31,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 06:44:31,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-09 06:44:31,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2025-03-09 06:44:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 21.31578947368421) internal successors, (405), 19 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2025-03-09 06:44:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:33,519 INFO L124 PetriNetUnfolderBase]: 19691/29195 cut-off events. [2025-03-09 06:44:33,520 INFO L125 PetriNetUnfolderBase]: For 60105/60105 co-relation queries the response was YES. [2025-03-09 06:44:33,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90654 conditions, 29195 events. 19691/29195 cut-off events. For 60105/60105 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 186946 event pairs, 1894 based on Foata normal form. 251/25060 useless extension candidates. Maximal degree in co-relation 54698. Up to 4359 conditions per place. [2025-03-09 06:44:33,659 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 342 selfloop transitions, 54 changer transitions 26/435 dead transitions. [2025-03-09 06:44:33,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 435 transitions, 3110 flow [2025-03-09 06:44:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 06:44:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 06:44:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 539 transitions. [2025-03-09 06:44:33,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2025-03-09 06:44:33,661 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 514 flow. Second operand 19 states and 539 transitions. [2025-03-09 06:44:33,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 435 transitions, 3110 flow [2025-03-09 06:44:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 435 transitions, 3005 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:33,722 INFO L231 Difference]: Finished difference. Result has 106 places, 114 transitions, 628 flow [2025-03-09 06:44:33,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=628, PETRI_PLACES=106, PETRI_TRANSITIONS=114} [2025-03-09 06:44:33,723 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2025-03-09 06:44:33,723 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 628 flow [2025-03-09 06:44:33,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.31578947368421) internal successors, (405), 19 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:33,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:33,723 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:33,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 06:44:33,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-09 06:44:33,924 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:33,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1652768461, now seen corresponding path program 2 times [2025-03-09 06:44:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:33,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180807074] [2025-03-09 06:44:33,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:33,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:33,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 06:44:33,932 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 34 statements. [2025-03-09 06:44:33,933 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:33,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 06:44:33,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180807074] [2025-03-09 06:44:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180807074] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:33,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537306582] [2025-03-09 06:44:33,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:33,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:33,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:33,953 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) [2025-03-09 06:44:33,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 06:44:34,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 06:44:34,018 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 34 statements. [2025-03-09 06:44:34,019 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:34,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:34,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 06:44:34,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 06:44:34,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 06:44:34,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537306582] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:34,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:34,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:44:34,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567370551] [2025-03-09 06:44:34,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:34,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:34,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:34,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:34,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:34,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-03-09 06:44:34,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 628 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:34,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:34,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-03-09 06:44:34,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:35,542 INFO L124 PetriNetUnfolderBase]: 17587/28822 cut-off events. [2025-03-09 06:44:35,542 INFO L125 PetriNetUnfolderBase]: For 38223/38223 co-relation queries the response was YES. [2025-03-09 06:44:35,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83373 conditions, 28822 events. 17587/28822 cut-off events. For 38223/38223 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 206025 event pairs, 4819 based on Foata normal form. 448/26197 useless extension candidates. Maximal degree in co-relation 51724. Up to 13688 conditions per place. [2025-03-09 06:44:35,698 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 100 selfloop transitions, 7 changer transitions 22/145 dead transitions. [2025-03-09 06:44:35,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 145 transitions, 1009 flow [2025-03-09 06:44:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-03-09 06:44:35,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-09 06:44:35,699 INFO L175 Difference]: Start difference. First operand has 106 places, 114 transitions, 628 flow. Second operand 4 states and 156 transitions. [2025-03-09 06:44:35,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 145 transitions, 1009 flow [2025-03-09 06:44:35,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 896 flow, removed 2 selfloop flow, removed 13 redundant places. [2025-03-09 06:44:35,804 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 465 flow [2025-03-09 06:44:35,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=465, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2025-03-09 06:44:35,804 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2025-03-09 06:44:35,804 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 465 flow [2025-03-09 06:44:35,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:35,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:35,805 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:35,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:36,005 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,SelfDestructingSolverStorable21 [2025-03-09 06:44:36,005 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:36,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -600824119, now seen corresponding path program 1 times [2025-03-09 06:44:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943531015] [2025-03-09 06:44:36,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:36,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:44:36,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:44:36,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:36,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:44:36,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943531015] [2025-03-09 06:44:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943531015] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640602503] [2025-03-09 06:44:36,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:36,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:36,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:36,078 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) [2025-03-09 06:44:36,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 06:44:36,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:44:36,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:44:36,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:36,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:36,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:36,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:44:36,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:44:36,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640602503] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:36,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:36,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:44:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851395255] [2025-03-09 06:44:36,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:36,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:44:36,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:36,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:44:36,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:44:36,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-09 06:44:36,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 465 flow. Second operand has 12 states, 12 states have (on average 28.166666666666668) internal successors, (338), 12 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:36,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:36,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-09 06:44:36,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:37,951 INFO L124 PetriNetUnfolderBase]: 17180/27015 cut-off events. [2025-03-09 06:44:37,951 INFO L125 PetriNetUnfolderBase]: For 64444/65008 co-relation queries the response was YES. [2025-03-09 06:44:38,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78776 conditions, 27015 events. 17180/27015 cut-off events. For 64444/65008 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 178353 event pairs, 3283 based on Foata normal form. 678/24463 useless extension candidates. Maximal degree in co-relation 78603. Up to 6482 conditions per place. [2025-03-09 06:44:38,143 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 328 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2025-03-09 06:44:38,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 352 transitions, 2465 flow [2025-03-09 06:44:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:44:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:44:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 389 transitions. [2025-03-09 06:44:38,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6174603174603175 [2025-03-09 06:44:38,144 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 465 flow. Second operand 10 states and 389 transitions. [2025-03-09 06:44:38,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 352 transitions, 2465 flow [2025-03-09 06:44:38,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 352 transitions, 2416 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:38,191 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 520 flow [2025-03-09 06:44:38,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=520, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2025-03-09 06:44:38,192 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2025-03-09 06:44:38,192 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 520 flow [2025-03-09 06:44:38,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.166666666666668) internal successors, (338), 12 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:38,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:38,192 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:38,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:38,393 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,SelfDestructingSolverStorable22 [2025-03-09 06:44:38,393 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:44:38,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -427354455, now seen corresponding path program 2 times [2025-03-09 06:44:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068730413] [2025-03-09 06:44:38,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:38,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-03-09 06:44:38,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 67 statements. [2025-03-09 06:44:38,407 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:38,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-09 06:44:38,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:38,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068730413] [2025-03-09 06:44:38,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068730413] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:38,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11907336] [2025-03-09 06:44:38,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:38,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:38,451 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) [2025-03-09 06:44:38,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 06:44:38,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-03-09 06:44:38,525 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 67 statements. [2025-03-09 06:44:38,525 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:38,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:38,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:44:38,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-09 06:44:38,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-09 06:44:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11907336] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:38,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:38,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:44:38,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646818208] [2025-03-09 06:44:38,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:38,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:38,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:38,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:38,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2025-03-09 06:44:38,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:38,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:38,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2025-03-09 06:44:38,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:41,062 INFO L124 PetriNetUnfolderBase]: 20104/31223 cut-off events. [2025-03-09 06:44:41,062 INFO L125 PetriNetUnfolderBase]: For 67009/67673 co-relation queries the response was YES. [2025-03-09 06:44:41,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93205 conditions, 31223 events. 20104/31223 cut-off events. For 67009/67673 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 208828 event pairs, 2767 based on Foata normal form. 226/27525 useless extension candidates. Maximal degree in co-relation 93030. Up to 15816 conditions per place. [2025-03-09 06:44:41,196 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2025-03-09 06:44:41,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 164 transitions, 1122 flow [2025-03-09 06:44:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:44:41,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:44:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-03-09 06:44:41,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5587301587301587 [2025-03-09 06:44:41,197 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 520 flow. Second operand 5 states and 176 transitions. [2025-03-09 06:44:41,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 164 transitions, 1122 flow [2025-03-09 06:44:41,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 164 transitions, 1102 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-09 06:44:41,293 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2025-03-09 06:44:41,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2025-03-09 06:44:41,293 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2025-03-09 06:44:41,293 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2025-03-09 06:44:41,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2025-03-09 06:44:41,296 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-03-09 06:44:41,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-03-09 06:44:41,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 06:44:41,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:41,498 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:41,503 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:44:41,503 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:44:41,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:44:41 BasicIcfg [2025-03-09 06:44:41,507 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:44:41,507 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:44:41,507 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:44:41,508 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:44:41,508 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:44:05" (3/4) ... [2025-03-09 06:44:41,509 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:44:41,511 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-09 06:44:41,511 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-09 06:44:41,511 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-09 06:44:41,518 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2025-03-09 06:44:41,519 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2025-03-09 06:44:41,519 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-03-09 06:44:41,519 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-09 06:44:41,591 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:44:41,591 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:44:41,591 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:44:41,592 INFO L158 Benchmark]: Toolchain (without parser) took 36529.25ms. Allocated memory was 142.6MB in the beginning and 4.5GB in the end (delta: 4.4GB). Free memory was 113.8MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2025-03-09 06:44:41,592 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:44:41,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.99ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 101.5MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:44:41,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.76ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 99.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:44:41,593 INFO L158 Benchmark]: Boogie Preprocessor took 47.76ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 97.8MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:44:41,593 INFO L158 Benchmark]: IcfgBuilder took 597.75ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 48.8MB in the end (delta: 49.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-09 06:44:41,593 INFO L158 Benchmark]: TraceAbstraction took 35553.43ms. Allocated memory was 142.6MB in the beginning and 4.5GB in the end (delta: 4.4GB). Free memory was 48.4MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2025-03-09 06:44:41,593 INFO L158 Benchmark]: Witness Printer took 83.99ms. Allocated memory is still 4.5GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:44:41,594 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.99ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 101.5MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.76ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 99.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.76ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 97.8MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 597.75ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 48.8MB in the end (delta: 49.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 35553.43ms. Allocated memory was 142.6MB in the beginning and 4.5GB in the end (delta: 4.4GB). Free memory was 48.4MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 83.99ms. Allocated memory is still 4.5GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 90 locations, 100 edges, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.4s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 28.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1896 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1721 mSDsluCounter, 1023 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 957 mSDsCounter, 279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6135 IncrementalHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 279 mSolverCounterUnsat, 66 mSDtfsCounter, 6135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 627 SyntacticMatches, 8 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=810occurred in iteration=10, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 891 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1160 ConstructedInterpolants, 0 QuantifiedInterpolants, 2902 SizeOfPredicates, 42 NumberOfNonLiveVariables, 2340 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 49 InterpolantComputations, 13 PerfectInterpolantSequences, 714/947 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:44:41,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE