./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-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-?-8fc3dc6-m [2025-03-17 19:47:09,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:47:09,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:47:09,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:47:09,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:47:09,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:47:09,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:47:09,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:47:09,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:47:09,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:47:09,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:47:09,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:47:09,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:47:09,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:47:09,499 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:47:09,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:47:09,499 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:47:09,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:47:09,499 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:47:09,499 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:47:09,500 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:47:09,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:47:09,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:47:09,500 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 [2025-03-17 19:47:09,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:47:09,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:47:09,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:47:09,754 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:47:09,754 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:47:09,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2025-03-17 19:47:11,019 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff45561f/ceade2f310c74004bec2971eedcb8f36/FLAG47838336b [2025-03-17 19:47:11,258 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:47:11,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2025-03-17 19:47:11,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff45561f/ceade2f310c74004bec2971eedcb8f36/FLAG47838336b [2025-03-17 19:47:11,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff45561f/ceade2f310c74004bec2971eedcb8f36 [2025-03-17 19:47:11,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:47:11,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:47:11,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:47:11,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:47:11,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:47:11,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367aa7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11, skipping insertion in model container [2025-03-17 19:47:11,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:47:11,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:47:11,460 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:47:11,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:47:11,496 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:47:11,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11 WrapperNode [2025-03-17 19:47:11,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:47:11,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:47:11,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:47:11,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:47:11,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,529 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 137 [2025-03-17 19:47:11,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:47:11,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:47:11,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:47:11,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:47:11,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,560 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [9, 2]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 4 writes are split as follows [4, 0]. [2025-03-17 19:47:11,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,567 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:47:11,575 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:47:11,575 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:47:11,575 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:47:11,576 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (1/1) ... [2025-03-17 19:47:11,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:47:11,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:11,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:47:11,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:47:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:47:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:47:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:47:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:47:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:47:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:47:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:47:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:47:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:47:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:47:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:47:11,621 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:47:11,704 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:47:11,706 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:47:12,007 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:47:12,007 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:47:12,210 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:47:12,210 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:47:12,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:47:12 BoogieIcfgContainer [2025-03-17 19:47:12,211 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:47:12,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:47:12,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:47:12,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:47:12,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:47:11" (1/3) ... [2025-03-17 19:47:12,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:47:12, skipping insertion in model container [2025-03-17 19:47:12,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:11" (2/3) ... [2025-03-17 19:47:12,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:47:12, skipping insertion in model container [2025-03-17 19:47:12,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:47:12" (3/3) ... [2025-03-17 19:47:12,222 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2025-03-17 19:47:12,235 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:47:12,236 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. [2025-03-17 19:47:12,236 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:47:12,317 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:47:12,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2025-03-17 19:47:12,376 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2025-03-17 19:47:12,378 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:47:12,381 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 6. Compared 144 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. [2025-03-17 19:47:12,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2025-03-17 19:47:12,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2025-03-17 19:47:12,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:47:12,399 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;@78d9f61c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:47:12,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-17 19:47:12,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:47:12,403 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:47:12,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:47:12,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:12,404 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:47:12,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:12,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 525558, now seen corresponding path program 1 times [2025-03-17 19:47:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819517799] [2025-03-17 19:47:12,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:12,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:47:12,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:47:12,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:12,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:12,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:12,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819517799] [2025-03-17 19:47:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819517799] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:12,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:12,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:47:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701165088] [2025-03-17 19:47:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:12,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:12,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:12,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:12,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-17 19:47:12,681 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) [2025-03-17 19:47:12,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:12,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-17 19:47:12,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:13,008 INFO L124 PetriNetUnfolderBase]: 830/1555 cut-off events. [2025-03-17 19:47:13,008 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-03-17 19:47:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1555 events. 830/1555 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8959 event pairs, 594 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2466. Up to 1126 conditions per place. [2025-03-17 19:47:13,029 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 38 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2025-03-17 19:47:13,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 245 flow [2025-03-17 19:47:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2025-03-17 19:47:13,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2025-03-17 19:47:13,042 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 142 transitions. [2025-03-17 19:47:13,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 245 flow [2025-03-17 19:47:13,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 236 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:47:13,052 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 210 flow [2025-03-17 19:47:13,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2025-03-17 19:47:13,057 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2025-03-17 19:47:13,058 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 210 flow [2025-03-17 19:47:13,059 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) [2025-03-17 19:47:13,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:13,059 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:47:13,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:47:13,059 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:13,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1522542309, now seen corresponding path program 1 times [2025-03-17 19:47:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:13,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904966594] [2025-03-17 19:47:13,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:13,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:47:13,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:47:13,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:13,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904966594] [2025-03-17 19:47:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904966594] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493374286] [2025-03-17 19:47:13,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:13,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:13,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:13,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:13,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:47:13,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:47:13,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:47:13,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:13,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:13,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:13,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:13,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:47:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493374286] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:47:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:47:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967849233] [2025-03-17 19:47:13,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:13,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:47:13,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:13,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:47:13,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:47:13,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-17 19:47:13,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:47:13,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:13,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-17 19:47:13,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:13,750 INFO L124 PetriNetUnfolderBase]: 830/1552 cut-off events. [2025-03-17 19:47:13,750 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-03-17 19:47:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 1552 events. 830/1552 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8910 event pairs, 594 based on Foata normal form. 3/1241 useless extension candidates. Maximal degree in co-relation 2699. Up to 1111 conditions per place. [2025-03-17 19:47:13,762 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 28 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2025-03-17 19:47:13,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 288 flow [2025-03-17 19:47:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:47:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:47:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-03-17 19:47:13,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-03-17 19:47:13,763 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 210 flow. Second operand 6 states and 180 transitions. [2025-03-17 19:47:13,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 288 flow [2025-03-17 19:47:13,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:47:13,765 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 232 flow [2025-03-17 19:47:13,765 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=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2025-03-17 19:47:13,766 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2025-03-17 19:47:13,766 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 232 flow [2025-03-17 19:47:13,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:47:13,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:13,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:47:13,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:13,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:13,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:13,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 45829106, now seen corresponding path program 1 times [2025-03-17 19:47:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:13,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109499935] [2025-03-17 19:47:13,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:13,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:13,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:47:13,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:47:13,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:13,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:14,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:14,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109499935] [2025-03-17 19:47:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109499935] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154563015] [2025-03-17 19:47:14,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:14,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:14,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:14,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:47:14,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:47:14,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:47:14,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:14,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:14,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:14,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:14,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:14,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154563015] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:14,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:14,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:47:14,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610665352] [2025-03-17 19:47:14,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:14,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:47:14,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:14,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:47:14,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:47:14,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-17 19:47:14,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 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) [2025-03-17 19:47:14,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:14,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-17 19:47:14,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:14,557 INFO L124 PetriNetUnfolderBase]: 839/1588 cut-off events. [2025-03-17 19:47:14,557 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-03-17 19:47:14,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2913 conditions, 1588 events. 839/1588 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9263 event pairs, 594 based on Foata normal form. 9/1283 useless extension candidates. Maximal degree in co-relation 2701. Up to 1126 conditions per place. [2025-03-17 19:47:14,566 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 35 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2025-03-17 19:47:14,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 550 flow [2025-03-17 19:47:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:47:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:47:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2025-03-17 19:47:14,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2025-03-17 19:47:14,568 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 232 flow. Second operand 10 states and 301 transitions. [2025-03-17 19:47:14,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 550 flow [2025-03-17 19:47:14,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 467 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-17 19:47:14,572 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 447 flow [2025-03-17 19:47:14,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=194, 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=447, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2025-03-17 19:47:14,572 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2025-03-17 19:47:14,572 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 447 flow [2025-03-17 19:47:14,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 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) [2025-03-17 19:47:14,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:14,573 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:14,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:47:14,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:47:14,773 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:14,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1001920412, now seen corresponding path program 1 times [2025-03-17 19:47:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:14,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247139995] [2025-03-17 19:47:14,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:14,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:14,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:47:14,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:47:14,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:14,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:14,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:14,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247139995] [2025-03-17 19:47:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247139995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:14,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:14,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460563350] [2025-03-17 19:47:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:14,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:14,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:14,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:14,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-17 19:47:14,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 447 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) [2025-03-17 19:47:14,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:14,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-17 19:47:14,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:15,145 INFO L124 PetriNetUnfolderBase]: 1719/2967 cut-off events. [2025-03-17 19:47:15,145 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-03-17 19:47:15,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5527 conditions, 2967 events. 1719/2967 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18077 event pairs, 914 based on Foata normal form. 86/2415 useless extension candidates. Maximal degree in co-relation 5429. Up to 1771 conditions per place. [2025-03-17 19:47:15,167 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 102 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2025-03-17 19:47:15,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 735 flow [2025-03-17 19:47:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-03-17 19:47:15,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2025-03-17 19:47:15,169 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 447 flow. Second operand 4 states and 176 transitions. [2025-03-17 19:47:15,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 735 flow [2025-03-17 19:47:15,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 126 transitions, 698 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-17 19:47:15,173 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 439 flow [2025-03-17 19:47:15,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=69, 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=439, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2025-03-17 19:47:15,174 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2025-03-17 19:47:15,174 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 439 flow [2025-03-17 19:47:15,174 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) [2025-03-17 19:47:15,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:15,174 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:15,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:47:15,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:15,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash -817031755, now seen corresponding path program 1 times [2025-03-17 19:47:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:15,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038092922] [2025-03-17 19:47:15,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:15,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:47:15,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:47:15,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:15,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:15,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038092922] [2025-03-17 19:47:15,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038092922] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:15,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:15,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:47:15,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929566904] [2025-03-17 19:47:15,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:15,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:47:15,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:15,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:47:15,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:47:15,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-03-17 19:47:15,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 439 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) [2025-03-17 19:47:15,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:15,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-03-17 19:47:15,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:15,488 INFO L124 PetriNetUnfolderBase]: 1837/3533 cut-off events. [2025-03-17 19:47:15,488 INFO L125 PetriNetUnfolderBase]: For 1123/1257 co-relation queries the response was YES. [2025-03-17 19:47:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 3533 events. 1837/3533 cut-off events. For 1123/1257 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 24137 event pairs, 910 based on Foata normal form. 0/3013 useless extension candidates. Maximal degree in co-relation 7151. Up to 1831 conditions per place. [2025-03-17 19:47:15,510 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 88 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2025-03-17 19:47:15,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 681 flow [2025-03-17 19:47:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:47:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:47:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2025-03-17 19:47:15,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-03-17 19:47:15,511 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 439 flow. Second operand 3 states and 135 transitions. [2025-03-17 19:47:15,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 681 flow [2025-03-17 19:47:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 113 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:47:15,515 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 457 flow [2025-03-17 19:47:15,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=457, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2025-03-17 19:47:15,515 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2025-03-17 19:47:15,515 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 457 flow [2025-03-17 19:47:15,515 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) [2025-03-17 19:47:15,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:15,516 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:15,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:47:15,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:15,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1812203692, now seen corresponding path program 1 times [2025-03-17 19:47:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:15,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525487633] [2025-03-17 19:47:15,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:15,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:47:15,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:47:15,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:15,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:47:15,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:15,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525487633] [2025-03-17 19:47:15,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525487633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:15,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:15,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:47:15,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345683470] [2025-03-17 19:47:15,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:15,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:15,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:15,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:15,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:47:15,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-03-17 19:47:15,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 457 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) [2025-03-17 19:47:15,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:15,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-03-17 19:47:15,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:16,002 INFO L124 PetriNetUnfolderBase]: 2634/4911 cut-off events. [2025-03-17 19:47:16,003 INFO L125 PetriNetUnfolderBase]: For 2093/2125 co-relation queries the response was YES. [2025-03-17 19:47:16,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11096 conditions, 4911 events. 2634/4911 cut-off events. For 2093/2125 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 33151 event pairs, 1634 based on Foata normal form. 114/4469 useless extension candidates. Maximal degree in co-relation 10942. Up to 2382 conditions per place. [2025-03-17 19:47:16,041 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 121 selfloop transitions, 24 changer transitions 0/167 dead transitions. [2025-03-17 19:47:16,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 167 transitions, 1065 flow [2025-03-17 19:47:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:47:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:47:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2025-03-17 19:47:16,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6878306878306878 [2025-03-17 19:47:16,043 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 457 flow. Second operand 6 states and 260 transitions. [2025-03-17 19:47:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 167 transitions, 1065 flow [2025-03-17 19:47:16,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 1056 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:47:16,055 INFO L231 Difference]: Finished difference. Result has 83 places, 106 transitions, 592 flow [2025-03-17 19:47:16,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=83, PETRI_TRANSITIONS=106} [2025-03-17 19:47:16,055 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2025-03-17 19:47:16,056 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 106 transitions, 592 flow [2025-03-17 19:47:16,056 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) [2025-03-17 19:47:16,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:16,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:16,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:47:16,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:16,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash 811517529, now seen corresponding path program 1 times [2025-03-17 19:47:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543188943] [2025-03-17 19:47:16,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:16,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:16,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:47:16,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:47:16,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:16,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:16,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:16,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543188943] [2025-03-17 19:47:16,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543188943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:16,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:16,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563327897] [2025-03-17 19:47:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:16,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:16,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:16,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:16,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-17 19:47:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 106 transitions, 592 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) [2025-03-17 19:47:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-17 19:47:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:16,717 INFO L124 PetriNetUnfolderBase]: 3936/6834 cut-off events. [2025-03-17 19:47:16,718 INFO L125 PetriNetUnfolderBase]: For 4589/4645 co-relation queries the response was YES. [2025-03-17 19:47:16,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6834 events. 3936/6834 cut-off events. For 4589/4645 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 44586 event pairs, 2320 based on Foata normal form. 276/6653 useless extension candidates. Maximal degree in co-relation 16646. Up to 4201 conditions per place. [2025-03-17 19:47:16,746 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 121 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2025-03-17 19:47:16,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 144 transitions, 992 flow [2025-03-17 19:47:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-03-17 19:47:16,748 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-17 19:47:16,748 INFO L175 Difference]: Start difference. First operand has 83 places, 106 transitions, 592 flow. Second operand 4 states and 168 transitions. [2025-03-17 19:47:16,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 144 transitions, 992 flow [2025-03-17 19:47:16,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 988 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-17 19:47:16,755 INFO L231 Difference]: Finished difference. Result has 88 places, 107 transitions, 609 flow [2025-03-17 19:47:16,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=88, PETRI_TRANSITIONS=107} [2025-03-17 19:47:16,757 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2025-03-17 19:47:16,757 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 107 transitions, 609 flow [2025-03-17 19:47:16,757 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) [2025-03-17 19:47:16,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:16,757 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:16,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:47:16,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:16,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -451701566, now seen corresponding path program 1 times [2025-03-17 19:47:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790374731] [2025-03-17 19:47:16,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:16,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:47:16,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:47:16,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:16,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:16,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790374731] [2025-03-17 19:47:16,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790374731] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:16,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709165259] [2025-03-17 19:47:16,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:16,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:16,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:16,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:16,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:47:16,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:47:16,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:47:16,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:16,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:16,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:47:16,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:47:16,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:47:16,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709165259] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:16,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:47:16,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2025-03-17 19:47:16,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135192518] [2025-03-17 19:47:16,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:16,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:16,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:16,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:47:16,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-03-17 19:47:16,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 107 transitions, 609 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) [2025-03-17 19:47:16,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:16,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-03-17 19:47:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:17,336 INFO L124 PetriNetUnfolderBase]: 2595/4548 cut-off events. [2025-03-17 19:47:17,336 INFO L125 PetriNetUnfolderBase]: For 4111/4329 co-relation queries the response was YES. [2025-03-17 19:47:17,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11703 conditions, 4548 events. 2595/4548 cut-off events. For 4111/4329 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 27102 event pairs, 1818 based on Foata normal form. 41/4180 useless extension candidates. Maximal degree in co-relation 11539. Up to 3098 conditions per place. [2025-03-17 19:47:17,362 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 107 selfloop transitions, 24 changer transitions 2/155 dead transitions. [2025-03-17 19:47:17,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 155 transitions, 1100 flow [2025-03-17 19:47:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:47:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:47:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2025-03-17 19:47:17,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-03-17 19:47:17,364 INFO L175 Difference]: Start difference. First operand has 88 places, 107 transitions, 609 flow. Second operand 6 states and 246 transitions. [2025-03-17 19:47:17,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 155 transitions, 1100 flow [2025-03-17 19:47:17,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 1090 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:47:17,371 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 679 flow [2025-03-17 19:47:17,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2025-03-17 19:47:17,371 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2025-03-17 19:47:17,372 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 679 flow [2025-03-17 19:47:17,372 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) [2025-03-17 19:47:17,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:17,372 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:47:17,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:17,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:17,573 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:17,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1931237303, now seen corresponding path program 2 times [2025-03-17 19:47:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:17,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155428217] [2025-03-17 19:47:17,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:17,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:17,584 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:47:17,587 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:47:17,587 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:17,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:47:17,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155428217] [2025-03-17 19:47:17,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155428217] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891128876] [2025-03-17 19:47:17,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:17,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:17,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:17,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:47:17,662 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:47:17,669 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:47:17,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:17,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:17,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:47:17,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:47:17,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:47:17,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891128876] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:17,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:17,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:47:17,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832263034] [2025-03-17 19:47:17,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:17,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:17,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:17,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:17,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-17 19:47:17,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 679 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) [2025-03-17 19:47:17,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:17,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-17 19:47:17,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:18,064 INFO L124 PetriNetUnfolderBase]: 2117/4176 cut-off events. [2025-03-17 19:47:18,064 INFO L125 PetriNetUnfolderBase]: For 3896/3912 co-relation queries the response was YES. [2025-03-17 19:47:18,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11088 conditions, 4176 events. 2117/4176 cut-off events. For 3896/3912 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 28082 event pairs, 1638 based on Foata normal form. 1/3872 useless extension candidates. Maximal degree in co-relation 10919. Up to 3010 conditions per place. [2025-03-17 19:47:18,088 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 72 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2025-03-17 19:47:18,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 108 transitions, 845 flow [2025-03-17 19:47:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-17 19:47:18,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-03-17 19:47:18,090 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 679 flow. Second operand 4 states and 124 transitions. [2025-03-17 19:47:18,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 108 transitions, 845 flow [2025-03-17 19:47:18,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 108 transitions, 809 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:18,098 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 665 flow [2025-03-17 19:47:18,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2025-03-17 19:47:18,099 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2025-03-17 19:47:18,099 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 665 flow [2025-03-17 19:47:18,099 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) [2025-03-17 19:47:18,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:18,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:18,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:18,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:18,303 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:18,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1057684895, now seen corresponding path program 1 times [2025-03-17 19:47:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:18,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363025827] [2025-03-17 19:47:18,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:18,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:47:18,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:47:18,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:18,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:47:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363025827] [2025-03-17 19:47:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363025827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739900188] [2025-03-17 19:47:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:18,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:18,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:18,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:18,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-17 19:47:18,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 665 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) [2025-03-17 19:47:18,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:18,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-17 19:47:18,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:18,842 INFO L124 PetriNetUnfolderBase]: 4660/8047 cut-off events. [2025-03-17 19:47:18,842 INFO L125 PetriNetUnfolderBase]: For 8398/8695 co-relation queries the response was YES. [2025-03-17 19:47:18,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21092 conditions, 8047 events. 4660/8047 cut-off events. For 8398/8695 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 52079 event pairs, 2213 based on Foata normal form. 127/7390 useless extension candidates. Maximal degree in co-relation 20925. Up to 4089 conditions per place. [2025-03-17 19:47:18,900 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 135 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2025-03-17 19:47:18,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 157 transitions, 1181 flow [2025-03-17 19:47:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2025-03-17 19:47:18,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2025-03-17 19:47:18,904 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 665 flow. Second operand 4 states and 169 transitions. [2025-03-17 19:47:18,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 157 transitions, 1181 flow [2025-03-17 19:47:18,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 157 transitions, 1149 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:18,913 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 655 flow [2025-03-17 19:47:18,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=655, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2025-03-17 19:47:18,914 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2025-03-17 19:47:18,914 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 655 flow [2025-03-17 19:47:18,914 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) [2025-03-17 19:47:18,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:18,914 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:47:18,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:47:18,914 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:18,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash -732672877, now seen corresponding path program 1 times [2025-03-17 19:47:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:18,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518187796] [2025-03-17 19:47:18,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:18,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:47:18,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:47:18,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:18,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 19:47:18,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518187796] [2025-03-17 19:47:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518187796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:18,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698397314] [2025-03-17 19:47:18,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:18,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:18,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:18,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:19,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2025-03-17 19:47:19,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 655 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) [2025-03-17 19:47:19,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:19,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2025-03-17 19:47:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:19,365 INFO L124 PetriNetUnfolderBase]: 3223/6049 cut-off events. [2025-03-17 19:47:19,365 INFO L125 PetriNetUnfolderBase]: For 6185/6489 co-relation queries the response was YES. [2025-03-17 19:47:19,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16538 conditions, 6049 events. 3223/6049 cut-off events. For 6185/6489 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 41657 event pairs, 2480 based on Foata normal form. 102/5685 useless extension candidates. Maximal degree in co-relation 16434. Up to 4498 conditions per place. [2025-03-17 19:47:19,400 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 65 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2025-03-17 19:47:19,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 749 flow [2025-03-17 19:47:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2025-03-17 19:47:19,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2025-03-17 19:47:19,401 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 655 flow. Second operand 4 states and 158 transitions. [2025-03-17 19:47:19,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 749 flow [2025-03-17 19:47:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 104 transitions, 735 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:47:19,410 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 612 flow [2025-03-17 19:47:19,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=92, 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=612, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2025-03-17 19:47:19,411 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2025-03-17 19:47:19,411 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 612 flow [2025-03-17 19:47:19,411 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) [2025-03-17 19:47:19,411 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:19,411 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:19,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:47:19,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:19,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1088924321, now seen corresponding path program 1 times [2025-03-17 19:47:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:19,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858750859] [2025-03-17 19:47:19,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:19,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:19,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:47:19,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:47:19,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:19,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:19,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858750859] [2025-03-17 19:47:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858750859] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230133836] [2025-03-17 19:47:19,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:19,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:19,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:19,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:19,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:47:19,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:47:19,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:47:19,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:19,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:19,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:19,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:19,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:47:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230133836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:47:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:47:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352775205] [2025-03-17 19:47:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:19,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:47:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:19,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:47:19,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:47:19,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-17 19:47:19,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 612 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) [2025-03-17 19:47:19,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:19,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-17 19:47:19,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:19,986 INFO L124 PetriNetUnfolderBase]: 3645/6017 cut-off events. [2025-03-17 19:47:19,987 INFO L125 PetriNetUnfolderBase]: For 4919/5321 co-relation queries the response was YES. [2025-03-17 19:47:20,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16694 conditions, 6017 events. 3645/6017 cut-off events. For 4919/5321 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 36594 event pairs, 925 based on Foata normal form. 277/5762 useless extension candidates. Maximal degree in co-relation 16588. Up to 1856 conditions per place. [2025-03-17 19:47:20,025 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 151 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2025-03-17 19:47:20,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 181 transitions, 1218 flow [2025-03-17 19:47:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:47:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:47:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2025-03-17 19:47:20,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2025-03-17 19:47:20,026 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 612 flow. Second operand 6 states and 258 transitions. [2025-03-17 19:47:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 181 transitions, 1218 flow [2025-03-17 19:47:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 181 transitions, 1186 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:20,038 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 594 flow [2025-03-17 19:47:20,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=92, 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=594, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2025-03-17 19:47:20,039 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2025-03-17 19:47:20,039 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 594 flow [2025-03-17 19:47:20,039 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) [2025-03-17 19:47:20,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:20,039 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:20,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:47:20,239 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,SelfDestructingSolverStorable11 [2025-03-17 19:47:20,240 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:20,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1040153592, now seen corresponding path program 1 times [2025-03-17 19:47:20,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:20,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159859074] [2025-03-17 19:47:20,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:20,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:20,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:47:20,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:47:20,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:20,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:47:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159859074] [2025-03-17 19:47:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159859074] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881583654] [2025-03-17 19:47:20,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:20,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:20,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:20,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:20,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:47:20,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:47:20,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:47:20,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:20,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:20,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 19:47:20,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:47:20,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:47:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881583654] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:20,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2025-03-17 19:47:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412938452] [2025-03-17 19:47:20,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:20,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 19:47:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:20,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 19:47:20,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-03-17 19:47:20,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-17 19:47:20,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 594 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) [2025-03-17 19:47:20,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:20,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-17 19:47:20,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:21,900 INFO L124 PetriNetUnfolderBase]: 6245/11378 cut-off events. [2025-03-17 19:47:21,901 INFO L125 PetriNetUnfolderBase]: For 16175/16704 co-relation queries the response was YES. [2025-03-17 19:47:21,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32109 conditions, 11378 events. 6245/11378 cut-off events. For 16175/16704 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 82214 event pairs, 4602 based on Foata normal form. 96/10517 useless extension candidates. Maximal degree in co-relation 32003. Up to 4469 conditions per place. [2025-03-17 19:47:21,954 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 68 selfloop transitions, 52 changer transitions 0/140 dead transitions. [2025-03-17 19:47:21,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 140 transitions, 1023 flow [2025-03-17 19:47:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:47:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:47:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2025-03-17 19:47:21,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2025-03-17 19:47:21,955 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 594 flow. Second operand 12 states and 352 transitions. [2025-03-17 19:47:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 140 transitions, 1023 flow [2025-03-17 19:47:21,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 140 transitions, 971 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 19:47:21,969 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 730 flow [2025-03-17 19:47:21,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=92, 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=730, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2025-03-17 19:47:21,970 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2025-03-17 19:47:21,970 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 730 flow [2025-03-17 19:47:21,970 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) [2025-03-17 19:47:21,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:21,970 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:21,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:22,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:22,174 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:22,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 603084909, now seen corresponding path program 1 times [2025-03-17 19:47:22,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:22,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912587801] [2025-03-17 19:47:22,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:22,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:22,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:47:22,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:47:22,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:22,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912587801] [2025-03-17 19:47:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912587801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904921641] [2025-03-17 19:47:22,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:22,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:22,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:22,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:22,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:47:22,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:47:22,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:47:22,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:22,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:22,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:22,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:22,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904921641] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:22,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:47:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207698319] [2025-03-17 19:47:22,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:22,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:47:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:22,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:47:22,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:47:22,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-17 19:47:22,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 730 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) [2025-03-17 19:47:22,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:22,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-17 19:47:22,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:24,033 INFO L124 PetriNetUnfolderBase]: 12837/20655 cut-off events. [2025-03-17 19:47:24,033 INFO L125 PetriNetUnfolderBase]: For 16925/18239 co-relation queries the response was YES. [2025-03-17 19:47:24,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52423 conditions, 20655 events. 12837/20655 cut-off events. For 16925/18239 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 142854 event pairs, 2771 based on Foata normal form. 1304/19948 useless extension candidates. Maximal degree in co-relation 52306. Up to 8012 conditions per place. [2025-03-17 19:47:24,155 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 238 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2025-03-17 19:47:24,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 274 transitions, 1828 flow [2025-03-17 19:47:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:47:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:47:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2025-03-17 19:47:24,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6936507936507936 [2025-03-17 19:47:24,157 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 730 flow. Second operand 10 states and 437 transitions. [2025-03-17 19:47:24,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 274 transitions, 1828 flow [2025-03-17 19:47:24,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 274 transitions, 1721 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-03-17 19:47:24,190 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 701 flow [2025-03-17 19:47:24,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=95, 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=701, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2025-03-17 19:47:24,205 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2025-03-17 19:47:24,205 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 701 flow [2025-03-17 19:47:24,205 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) [2025-03-17 19:47:24,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:24,205 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2025-03-17 19:47:24,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:24,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:24,410 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:24,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash 100652659, now seen corresponding path program 2 times [2025-03-17 19:47:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:24,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872635206] [2025-03-17 19:47:24,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:24,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:24,416 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-17 19:47:24,420 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-17 19:47:24,420 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:24,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:47:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872635206] [2025-03-17 19:47:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872635206] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335203666] [2025-03-17 19:47:24,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:24,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:24,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:24,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:24,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:47:24,497 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-17 19:47:24,505 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-17 19:47:24,505 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:24,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:24,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:47:24,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:47:24,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:47:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335203666] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:24,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:47:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509199882] [2025-03-17 19:47:24,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:24,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:24,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:24,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:47:24,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2025-03-17 19:47:24,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 701 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) [2025-03-17 19:47:24,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:24,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2025-03-17 19:47:24,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:25,807 INFO L124 PetriNetUnfolderBase]: 11997/19999 cut-off events. [2025-03-17 19:47:25,807 INFO L125 PetriNetUnfolderBase]: For 24759/26151 co-relation queries the response was YES. [2025-03-17 19:47:25,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57768 conditions, 19999 events. 11997/19999 cut-off events. For 24759/26151 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 144382 event pairs, 8898 based on Foata normal form. 380/19325 useless extension candidates. Maximal degree in co-relation 57668. Up to 16218 conditions per place. [2025-03-17 19:47:25,945 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 55 selfloop transitions, 43 changer transitions 0/118 dead transitions. [2025-03-17 19:47:25,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 118 transitions, 877 flow [2025-03-17 19:47:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:47:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:47:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-03-17 19:47:25,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-03-17 19:47:25,946 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 701 flow. Second operand 5 states and 145 transitions. [2025-03-17 19:47:25,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 118 transitions, 877 flow [2025-03-17 19:47:25,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 830 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-17 19:47:25,992 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 720 flow [2025-03-17 19:47:25,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=99, 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=720, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2025-03-17 19:47:25,993 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2025-03-17 19:47:25,993 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 720 flow [2025-03-17 19:47:25,993 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) [2025-03-17 19:47:25,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:25,993 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] [2025-03-17 19:47:25,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 19:47:26,193 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,SelfDestructingSolverStorable14 [2025-03-17 19:47:26,193 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:26,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -956542988, now seen corresponding path program 1 times [2025-03-17 19:47:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:26,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090018393] [2025-03-17 19:47:26,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:26,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:26,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:47:26,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:47:26,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:26,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090018393] [2025-03-17 19:47:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090018393] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036451696] [2025-03-17 19:47:26,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:26,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:26,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:26,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:26,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:47:26,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:47:26,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:47:26,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:26,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:26,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 19:47:26,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:26,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:47:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036451696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:26,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:47:26,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-03-17 19:47:26,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049136020] [2025-03-17 19:47:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:26,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:26,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:26,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:47:26,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2025-03-17 19:47:26,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 720 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) [2025-03-17 19:47:26,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:26,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2025-03-17 19:47:26,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:28,635 INFO L124 PetriNetUnfolderBase]: 17675/26742 cut-off events. [2025-03-17 19:47:28,636 INFO L125 PetriNetUnfolderBase]: For 27268/29020 co-relation queries the response was YES. [2025-03-17 19:47:28,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75818 conditions, 26742 events. 17675/26742 cut-off events. For 27268/29020 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 175314 event pairs, 2680 based on Foata normal form. 906/26874 useless extension candidates. Maximal degree in co-relation 55640. Up to 10062 conditions per place. [2025-03-17 19:47:28,881 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 146 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2025-03-17 19:47:28,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1264 flow [2025-03-17 19:47:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-17 19:47:28,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2025-03-17 19:47:28,882 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 720 flow. Second operand 4 states and 159 transitions. [2025-03-17 19:47:28,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1264 flow [2025-03-17 19:47:28,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 170 transitions, 1186 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:28,925 INFO L231 Difference]: Finished difference. Result has 101 places, 116 transitions, 652 flow [2025-03-17 19:47:28,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=652, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2025-03-17 19:47:28,926 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2025-03-17 19:47:28,926 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 652 flow [2025-03-17 19:47:28,926 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) [2025-03-17 19:47:28,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:28,926 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] [2025-03-17 19:47:28,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:29,126 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,SelfDestructingSolverStorable15 [2025-03-17 19:47:29,129 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:29,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash -956542987, now seen corresponding path program 1 times [2025-03-17 19:47:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:29,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928626338] [2025-03-17 19:47:29,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:29,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:29,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:47:29,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:47:29,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:29,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928626338] [2025-03-17 19:47:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928626338] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521688348] [2025-03-17 19:47:29,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:29,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:29,287 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:29,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:47:29,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:47:29,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:47:29,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:29,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:29,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:47:29,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:29,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521688348] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:29,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:29,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:47:29,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005811672] [2025-03-17 19:47:29,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:29,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:47:29,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:29,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:47:29,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:47:29,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-17 19:47:29,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 652 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) [2025-03-17 19:47:29,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:29,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-17 19:47:29,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:31,931 INFO L124 PetriNetUnfolderBase]: 21415/34352 cut-off events. [2025-03-17 19:47:31,931 INFO L125 PetriNetUnfolderBase]: For 43275/45271 co-relation queries the response was YES. [2025-03-17 19:47:32,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99461 conditions, 34352 events. 21415/34352 cut-off events. For 43275/45271 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 248406 event pairs, 3774 based on Foata normal form. 1950/35421 useless extension candidates. Maximal degree in co-relation 73051. Up to 9071 conditions per place. [2025-03-17 19:47:32,328 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 227 selfloop transitions, 12 changer transitions 0/255 dead transitions. [2025-03-17 19:47:32,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 255 transitions, 1744 flow [2025-03-17 19:47:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:47:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:47:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2025-03-17 19:47:32,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-03-17 19:47:32,333 INFO L175 Difference]: Start difference. First operand has 101 places, 116 transitions, 652 flow. Second operand 7 states and 287 transitions. [2025-03-17 19:47:32,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 255 transitions, 1744 flow [2025-03-17 19:47:32,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 255 transitions, 1718 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:32,434 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 705 flow [2025-03-17 19:47:32,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2025-03-17 19:47:32,436 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2025-03-17 19:47:32,436 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 705 flow [2025-03-17 19:47:32,436 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) [2025-03-17 19:47:32,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:32,437 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:32,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:32,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 19:47:32,637 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:32,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -27669249, now seen corresponding path program 1 times [2025-03-17 19:47:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095333514] [2025-03-17 19:47:32,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:32,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:47:32,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:47:32,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:32,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:47:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095333514] [2025-03-17 19:47:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095333514] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:32,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:47:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181186496] [2025-03-17 19:47:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:32,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:32,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:32,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:47:32,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-03-17 19:47:32,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 705 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) [2025-03-17 19:47:32,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:32,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-03-17 19:47:32,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:34,976 INFO L124 PetriNetUnfolderBase]: 19101/30385 cut-off events. [2025-03-17 19:47:34,976 INFO L125 PetriNetUnfolderBase]: For 59357/60365 co-relation queries the response was YES. [2025-03-17 19:47:35,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94138 conditions, 30385 events. 19101/30385 cut-off events. For 59357/60365 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 217576 event pairs, 13134 based on Foata normal form. 160/28107 useless extension candidates. Maximal degree in co-relation 68325. Up to 24487 conditions per place. [2025-03-17 19:47:35,462 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 76 selfloop transitions, 15 changer transitions 28/138 dead transitions. [2025-03-17 19:47:35,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 138 transitions, 1017 flow [2025-03-17 19:47:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:47:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:47:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2025-03-17 19:47:35,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-03-17 19:47:35,463 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 705 flow. Second operand 6 states and 228 transitions. [2025-03-17 19:47:35,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 138 transitions, 1017 flow [2025-03-17 19:47:35,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 998 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-17 19:47:35,546 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 630 flow [2025-03-17 19:47:35,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2025-03-17 19:47:35,546 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 52 predicate places. [2025-03-17 19:47:35,546 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 630 flow [2025-03-17 19:47:35,546 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) [2025-03-17 19:47:35,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:35,547 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:47:35,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:47:35,547 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:35,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1028192507, now seen corresponding path program 2 times [2025-03-17 19:47:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:35,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830119627] [2025-03-17 19:47:35,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:35,559 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:47:35,563 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 30 statements. [2025-03-17 19:47:35,563 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:35,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 19:47:35,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:35,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830119627] [2025-03-17 19:47:35,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830119627] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:35,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307911065] [2025-03-17 19:47:35,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:35,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:35,595 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:35,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:47:35,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:47:35,666 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 30 statements. [2025-03-17 19:47:35,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:35,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:35,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:47:35,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 19:47:35,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 19:47:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307911065] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:35,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:35,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:47:35,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607144578] [2025-03-17 19:47:35,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:35,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:35,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:35,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:35,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:35,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2025-03-17 19:47:35,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 630 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) [2025-03-17 19:47:35,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:35,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2025-03-17 19:47:35,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:37,950 INFO L124 PetriNetUnfolderBase]: 15629/24846 cut-off events. [2025-03-17 19:47:37,950 INFO L125 PetriNetUnfolderBase]: For 41006/42156 co-relation queries the response was YES. [2025-03-17 19:47:38,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74067 conditions, 24846 events. 15629/24846 cut-off events. For 41006/42156 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 174982 event pairs, 6264 based on Foata normal form. 644/24517 useless extension candidates. Maximal degree in co-relation 54967. Up to 12853 conditions per place. [2025-03-17 19:47:38,147 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 101 selfloop transitions, 11 changer transitions 0/131 dead transitions. [2025-03-17 19:47:38,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 131 transitions, 950 flow [2025-03-17 19:47:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-03-17 19:47:38,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-03-17 19:47:38,148 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 630 flow. Second operand 4 states and 152 transitions. [2025-03-17 19:47:38,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 131 transitions, 950 flow [2025-03-17 19:47:38,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 858 flow, removed 12 selfloop flow, removed 14 redundant places. [2025-03-17 19:47:38,256 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 556 flow [2025-03-17 19:47:38,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=556, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2025-03-17 19:47:38,257 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2025-03-17 19:47:38,257 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 556 flow [2025-03-17 19:47:38,257 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) [2025-03-17 19:47:38,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:38,257 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] [2025-03-17 19:47:38,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:38,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:38,458 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:38,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1201592463, now seen corresponding path program 1 times [2025-03-17 19:47:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067178522] [2025-03-17 19:47:38,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:38,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:38,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:47:38,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:47:38,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:38,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:47:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067178522] [2025-03-17 19:47:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067178522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:38,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:47:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143031288] [2025-03-17 19:47:38,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:38,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:38,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:38,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:38,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-17 19:47:38,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 556 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) [2025-03-17 19:47:38,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:38,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-17 19:47:38,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:40,537 INFO L124 PetriNetUnfolderBase]: 19761/31200 cut-off events. [2025-03-17 19:47:40,537 INFO L125 PetriNetUnfolderBase]: For 44475/45423 co-relation queries the response was YES. [2025-03-17 19:47:40,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91891 conditions, 31200 events. 19761/31200 cut-off events. For 44475/45423 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 219963 event pairs, 6296 based on Foata normal form. 854/31429 useless extension candidates. Maximal degree in co-relation 52918. Up to 12416 conditions per place. [2025-03-17 19:47:40,804 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 136 selfloop transitions, 10 changer transitions 0/161 dead transitions. [2025-03-17 19:47:40,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 1082 flow [2025-03-17 19:47:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-03-17 19:47:40,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-03-17 19:47:40,805 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 556 flow. Second operand 4 states and 162 transitions. [2025-03-17 19:47:40,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 1082 flow [2025-03-17 19:47:40,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1016 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:47:40,951 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 557 flow [2025-03-17 19:47:40,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=557, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2025-03-17 19:47:40,952 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2025-03-17 19:47:40,952 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 557 flow [2025-03-17 19:47:40,952 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) [2025-03-17 19:47:40,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:40,952 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] [2025-03-17 19:47:40,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:47:40,952 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:40,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash 297073452, now seen corresponding path program 1 times [2025-03-17 19:47:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400502265] [2025-03-17 19:47:40,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:40,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:40,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:47:40,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:47:40,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:40,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:47:41,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:41,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400502265] [2025-03-17 19:47:41,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400502265] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:41,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956923213] [2025-03-17 19:47:41,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:41,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:41,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:41,024 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:41,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 19:47:41,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:47:41,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:47:41,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:41,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:41,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:47:41,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:47:41,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:47:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956923213] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:41,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-03-17 19:47:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831098781] [2025-03-17 19:47:41,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:41,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 19:47:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:41,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 19:47:41,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-17 19:47:41,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2025-03-17 19:47:41,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 557 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) [2025-03-17 19:47:41,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:41,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2025-03-17 19:47:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:44,032 INFO L124 PetriNetUnfolderBase]: 19691/29185 cut-off events. [2025-03-17 19:47:44,032 INFO L125 PetriNetUnfolderBase]: For 60122/60122 co-relation queries the response was YES. [2025-03-17 19:47:44,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90652 conditions, 29185 events. 19691/29185 cut-off events. For 60122/60122 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 186939 event pairs, 1894 based on Foata normal form. 251/25052 useless extension candidates. Maximal degree in co-relation 54679. Up to 4359 conditions per place. [2025-03-17 19:47:44,270 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 342 selfloop transitions, 54 changer transitions 26/435 dead transitions. [2025-03-17 19:47:44,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 435 transitions, 3153 flow [2025-03-17 19:47:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 19:47:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-17 19:47:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 539 transitions. [2025-03-17 19:47:44,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2025-03-17 19:47:44,272 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 557 flow. Second operand 19 states and 539 transitions. [2025-03-17 19:47:44,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 435 transitions, 3153 flow [2025-03-17 19:47:44,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 435 transitions, 3048 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-17 19:47:44,351 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 671 flow [2025-03-17 19:47:44,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=88, 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=671, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2025-03-17 19:47:44,352 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2025-03-17 19:47:44,352 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 671 flow [2025-03-17 19:47:44,352 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) [2025-03-17 19:47:44,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:44,352 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] [2025-03-17 19:47:44,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 19:47:44,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-17 19:47:44,553 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:44,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 615863477, now seen corresponding path program 2 times [2025-03-17 19:47:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875833086] [2025-03-17 19:47:44,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:44,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-17 19:47:44,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 34 statements. [2025-03-17 19:47:44,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:44,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-17 19:47:44,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875833086] [2025-03-17 19:47:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875833086] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017603976] [2025-03-17 19:47:44,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:44,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:44,592 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:44,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 19:47:44,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-17 19:47:44,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 34 statements. [2025-03-17 19:47:44,668 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:44,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:44,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 19:47:44,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-17 19:47:44,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-17 19:47:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017603976] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:44,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:47:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589423996] [2025-03-17 19:47:44,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:44,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:44,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:44,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:44,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2025-03-17 19:47:44,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 671 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) [2025-03-17 19:47:44,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:44,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2025-03-17 19:47:44,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:46,301 INFO L124 PetriNetUnfolderBase]: 17580/28759 cut-off events. [2025-03-17 19:47:46,301 INFO L125 PetriNetUnfolderBase]: For 38235/38235 co-relation queries the response was YES. [2025-03-17 19:47:46,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83285 conditions, 28759 events. 17580/28759 cut-off events. For 38235/38235 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 205394 event pairs, 4819 based on Foata normal form. 448/26103 useless extension candidates. Maximal degree in co-relation 51678. Up to 13688 conditions per place. [2025-03-17 19:47:46,498 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 100 selfloop transitions, 7 changer transitions 22/145 dead transitions. [2025-03-17 19:47:46,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 1052 flow [2025-03-17 19:47:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-03-17 19:47:46,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-17 19:47:46,503 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 671 flow. Second operand 4 states and 156 transitions. [2025-03-17 19:47:46,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 1052 flow [2025-03-17 19:47:46,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 145 transitions, 939 flow, removed 2 selfloop flow, removed 13 redundant places. [2025-03-17 19:47:46,622 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 501 flow [2025-03-17 19:47:46,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=93, 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=501, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2025-03-17 19:47:46,623 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2025-03-17 19:47:46,623 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 501 flow [2025-03-17 19:47:46,623 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) [2025-03-17 19:47:46,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:46,623 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] [2025-03-17 19:47:46,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:46,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-17 19:47:46,824 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:46,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 473203013, now seen corresponding path program 1 times [2025-03-17 19:47:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059791994] [2025-03-17 19:47:46,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:46,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 19:47:46,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 19:47:46,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:46,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:47:46,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:46,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059791994] [2025-03-17 19:47:46,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059791994] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:46,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747349446] [2025-03-17 19:47:46,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:46,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:46,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:46,912 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:46,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 19:47:46,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 19:47:46,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 19:47:46,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:46,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:46,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:47,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:47:47,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:47:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747349446] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:47,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:47,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:47:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145404257] [2025-03-17 19:47:47,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:47,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:47:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:47,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:47:47,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:47:47,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-03-17 19:47:47,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 501 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) [2025-03-17 19:47:47,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:47,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-03-17 19:47:47,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:48,934 INFO L124 PetriNetUnfolderBase]: 17180/27065 cut-off events. [2025-03-17 19:47:48,934 INFO L125 PetriNetUnfolderBase]: For 59822/60381 co-relation queries the response was YES. [2025-03-17 19:47:49,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78906 conditions, 27065 events. 17180/27065 cut-off events. For 59822/60381 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 179048 event pairs, 3283 based on Foata normal form. 678/24507 useless extension candidates. Maximal degree in co-relation 78718. Up to 6482 conditions per place. [2025-03-17 19:47:49,154 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 328 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2025-03-17 19:47:49,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 352 transitions, 2501 flow [2025-03-17 19:47:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:47:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:47:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 389 transitions. [2025-03-17 19:47:49,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6174603174603175 [2025-03-17 19:47:49,155 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 501 flow. Second operand 10 states and 389 transitions. [2025-03-17 19:47:49,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 352 transitions, 2501 flow [2025-03-17 19:47:49,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 352 transitions, 2452 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:47:49,192 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 556 flow [2025-03-17 19:47:49,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=83, 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=556, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2025-03-17 19:47:49,193 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2025-03-17 19:47:49,193 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 556 flow [2025-03-17 19:47:49,193 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) [2025-03-17 19:47:49,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:49,193 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] [2025-03-17 19:47:49,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 19:47:49,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:49,394 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-17 19:47:49,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1884883163, now seen corresponding path program 2 times [2025-03-17 19:47:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584776240] [2025-03-17 19:47:49,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:49,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-03-17 19:47:49,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 67 statements. [2025-03-17 19:47:49,408 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:49,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 19:47:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584776240] [2025-03-17 19:47:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584776240] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086619783] [2025-03-17 19:47:49,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:49,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:49,441 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:47:49,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 19:47:49,502 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-03-17 19:47:49,520 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 67 statements. [2025-03-17 19:47:49,520 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:49,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:49,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:47:49,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 19:47:49,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 19:47:49,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086619783] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:49,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:49,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:47:49,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788036162] [2025-03-17 19:47:49,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:49,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:47:49,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:49,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:47:49,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:47:49,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2025-03-17 19:47:49,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 556 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) [2025-03-17 19:47:49,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:49,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2025-03-17 19:47:49,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:51,700 INFO L124 PetriNetUnfolderBase]: 20104/31525 cut-off events. [2025-03-17 19:47:51,700 INFO L125 PetriNetUnfolderBase]: For 64309/64968 co-relation queries the response was YES. [2025-03-17 19:47:51,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93572 conditions, 31525 events. 20104/31525 cut-off events. For 64309/64968 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 213408 event pairs, 2767 based on Foata normal form. 226/28001 useless extension candidates. Maximal degree in co-relation 93382. Up to 15816 conditions per place. [2025-03-17 19:47:51,873 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2025-03-17 19:47:51,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 164 transitions, 1158 flow [2025-03-17 19:47:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:47:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:47:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-03-17 19:47:51,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5587301587301587 [2025-03-17 19:47:51,874 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 556 flow. Second operand 5 states and 176 transitions. [2025-03-17 19:47:51,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 164 transitions, 1158 flow [2025-03-17 19:47:51,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 164 transitions, 1138 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-17 19:47:51,927 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2025-03-17 19:47:51,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=88, 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=92, PETRI_TRANSITIONS=0} [2025-03-17 19:47:51,927 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2025-03-17 19:47:51,927 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2025-03-17 19:47:51,927 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) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-03-17 19:47:51,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-03-17 19:47:51,930 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-03-17 19:47:51,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 19:47:52,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:52,131 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] [2025-03-17 19:47:52,134 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:47:52,134 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:47:52,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:47:52 BasicIcfg [2025-03-17 19:47:52,140 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:47:52,140 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:47:52,140 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:47:52,140 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:47:52,141 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:47:12" (3/4) ... [2025-03-17 19:47:52,142 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:47:52,144 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:47:52,144 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:47:52,144 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-17 19:47:52,148 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2025-03-17 19:47:52,148 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2025-03-17 19:47:52,149 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-03-17 19:47:52,149 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 19:47:52,209 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:47:52,210 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:47:52,210 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:47:52,210 INFO L158 Benchmark]: Toolchain (without parser) took 40919.51ms. Allocated memory was 142.6MB in the beginning and 9.2GB in the end (delta: 9.1GB). Free memory was 112.9MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2025-03-17 19:47:52,210 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 201.3MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:47:52,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.57ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 100.7MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:47:52,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.19ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 99.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:47:52,211 INFO L158 Benchmark]: Boogie Preprocessor took 44.66ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:47:52,211 INFO L158 Benchmark]: IcfgBuilder took 635.65ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 47.9MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-17 19:47:52,211 INFO L158 Benchmark]: TraceAbstraction took 39924.79ms. Allocated memory was 142.6MB in the beginning and 9.2GB in the end (delta: 9.1GB). Free memory was 47.4MB in the beginning and 5.2GB in the end (delta: -5.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2025-03-17 19:47:52,211 INFO L158 Benchmark]: Witness Printer took 69.61ms. Allocated memory is still 9.2GB. Free memory was 5.2GB in the beginning and 5.2GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:47:52,212 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 201.3MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.57ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 100.7MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.19ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 99.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.66ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 635.65ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 47.9MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 39924.79ms. Allocated memory was 142.6MB in the beginning and 9.2GB in the end (delta: 9.1GB). Free memory was 47.4MB in the beginning and 5.2GB in the end (delta: -5.2GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. * Witness Printer took 69.61ms. Allocated memory is still 9.2GB. Free memory was 5.2GB in the beginning and 5.2GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. 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: 39.8s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1855 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1709 mSDsluCounter, 1053 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 998 mSDsCounter, 292 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6486 IncrementalHoareTripleChecker+Invalid, 6778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 292 mSolverCounterUnsat, 55 mSDtfsCounter, 6486 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 628 SyntacticMatches, 8 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=13, InterpolantAutomatonStates: 151, 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, 3.0s InterpolantComputationTime, 899 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1167 ConstructedInterpolants, 0 QuantifiedInterpolants, 2933 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2418 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 50 InterpolantComputations, 13 PerfectInterpolantSequences, 716/951 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! [2025-03-17 19:47:52,230 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