./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-commit-2.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-commit-2.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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:44:14,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:44:14,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:44:14,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:44:14,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:44:14,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:44:14,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:44:14,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:44:14,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:44:14,521 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:44:14,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:44:14,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:44:14,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:44:14,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:44:14,522 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:44:14,523 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:14,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:44:14,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:44:14,523 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 -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2025-03-17 19:44:14,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:44:14,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:44:14,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:44:14,764 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:44:14,765 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:44:14,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2025-03-17 19:44:15,897 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb734846d/c4e5e2f5afe84b2299e2628507caedcd/FLAG2c8c51c81 [2025-03-17 19:44:16,133 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:44:16,134 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2025-03-17 19:44:16,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb734846d/c4e5e2f5afe84b2299e2628507caedcd/FLAG2c8c51c81 [2025-03-17 19:44:16,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb734846d/c4e5e2f5afe84b2299e2628507caedcd [2025-03-17 19:44:16,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:44:16,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:44:16,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:16,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:44:16,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:44:16,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e23300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16, skipping insertion in model container [2025-03-17 19:44:16,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:44:16,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:16,315 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:44:16,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:16,346 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:44:16,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16 WrapperNode [2025-03-17 19:44:16,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:16,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:16,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:44:16,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:44:16,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,399 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 479 [2025-03-17 19:44:16,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:16,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:44:16,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:44:16,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:44:16,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,424 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-03-17 19:44:16,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,433 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:44:16,441 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:44:16,441 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:44:16,441 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:44:16,444 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (1/1) ... [2025-03-17 19:44:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:16,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:44:16,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:44:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:44:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:44:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:44:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:44:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:44:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:44:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:44:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 19:44:16,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:44:16,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:44:16,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:44:16,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:44:16,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:44:16,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:44:16,502 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:44:16,596 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:44:16,597 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:44:17,098 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:44:17,099 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:44:17,464 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:44:17,465 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:44:17,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:17 BoogieIcfgContainer [2025-03-17 19:44:17,465 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:44:17,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:44:17,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:44:17,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:44:17,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:44:16" (1/3) ... [2025-03-17 19:44:17,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c19e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:17, skipping insertion in model container [2025-03-17 19:44:17,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:16" (2/3) ... [2025-03-17 19:44:17,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c19e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:17, skipping insertion in model container [2025-03-17 19:44:17,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:17" (3/3) ... [2025-03-17 19:44:17,472 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2025-03-17 19:44:17,484 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:44:17,486 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-commit-2.wvr.c that has 5 procedures, 91 locations, 1 initial locations, 8 loop locations, and 32 error locations. [2025-03-17 19:44:17,486 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:44:17,579 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 19:44:17,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 102 transitions, 232 flow [2025-03-17 19:44:17,638 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2025-03-17 19:44:17,640 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 19:44:17,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 98 events. 12/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 327 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2025-03-17 19:44:17,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 102 transitions, 232 flow [2025-03-17 19:44:17,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 96 transitions, 213 flow [2025-03-17 19:44:17,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:44:17,670 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;@78b8d1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:44:17,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-03-17 19:44:17,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:44:17,674 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:44:17,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:44:17,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:17,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:44:17,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:44:17,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1289546, now seen corresponding path program 1 times [2025-03-17 19:44:17,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:17,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806695888] [2025-03-17 19:44:17,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:17,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:44:17,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:44:17,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:17,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:17,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806695888] [2025-03-17 19:44:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806695888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:17,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378631881] [2025-03-17 19:44:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:17,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:17,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:17,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:18,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2025-03-17 19:44:18,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:18,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:18,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2025-03-17 19:44:18,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:26,146 INFO L124 PetriNetUnfolderBase]: 97389/126121 cut-off events. [2025-03-17 19:44:26,146 INFO L125 PetriNetUnfolderBase]: For 3618/3618 co-relation queries the response was YES. [2025-03-17 19:44:26,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256018 conditions, 126121 events. 97389/126121 cut-off events. For 3618/3618 co-relation queries the response was YES. Maximal size of possible extension queue 4030. Compared 732485 event pairs, 86571 based on Foata normal form. 4/87100 useless extension candidates. Maximal degree in co-relation 248761. Up to 125966 conditions per place. [2025-03-17 19:44:26,818 INFO L140 encePairwiseOnDemand]: 65/102 looper letters, 71 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2025-03-17 19:44:26,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 373 flow [2025-03-17 19:44:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-03-17 19:44:26,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-03-17 19:44:26,830 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 213 flow. Second operand 4 states and 156 transitions. [2025-03-17 19:44:26,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 373 flow [2025-03-17 19:44:26,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 360 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:44:26,996 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 284 flow [2025-03-17 19:44:26,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2025-03-17 19:44:27,000 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -13 predicate places. [2025-03-17 19:44:27,000 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 284 flow [2025-03-17 19:44:27,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:27,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:27,001 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:44:27,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:44:27,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:44:27,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -236594477, now seen corresponding path program 1 times [2025-03-17 19:44:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336544697] [2025-03-17 19:44:27,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:27,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:27,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:27,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:27,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:27,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336544697] [2025-03-17 19:44:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336544697] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340526508] [2025-03-17 19:44:27,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:27,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:27,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:44:27,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:27,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:27,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:27,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:27,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:27,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:27,260 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:27,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340526508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:27,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:44:27,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390010226] [2025-03-17 19:44:27,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:27,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:27,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:27,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:27,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:27,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2025-03-17 19:44:27,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:27,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:27,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2025-03-17 19:44:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:35,508 INFO L124 PetriNetUnfolderBase]: 97389/126117 cut-off events. [2025-03-17 19:44:35,508 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2025-03-17 19:44:35,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255061 conditions, 126117 events. 97389/126117 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 4030. Compared 732375 event pairs, 86571 based on Foata normal form. 4/87103 useless extension candidates. Maximal degree in co-relation 254965. Up to 125946 conditions per place. [2025-03-17 19:44:36,312 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 58 selfloop transitions, 22 changer transitions 0/88 dead transitions. [2025-03-17 19:44:36,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 428 flow [2025-03-17 19:44:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2025-03-17 19:44:36,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2549019607843137 [2025-03-17 19:44:36,316 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 284 flow. Second operand 6 states and 156 transitions. [2025-03-17 19:44:36,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 428 flow [2025-03-17 19:44:36,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:36,320 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 312 flow [2025-03-17 19:44:36,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2025-03-17 19:44:36,321 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2025-03-17 19:44:36,321 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 312 flow [2025-03-17 19:44:36,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:36,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:36,322 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:44:36,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:36,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:36,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-17 19:44:36,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1255507058, now seen corresponding path program 1 times [2025-03-17 19:44:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:36,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618404365] [2025-03-17 19:44:36,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:36,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:36,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:36,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:36,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:36,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618404365] [2025-03-17 19:44:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618404365] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891825979] [2025-03-17 19:44:36,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:36,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:36,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:36,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:36,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:44:36,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:36,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:36,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:36,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:36,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:36,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:36,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:36,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891825979] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:36,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:36,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:44:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952771646] [2025-03-17 19:44:36,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:36,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:36,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:36,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:36,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:36,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 102 [2025-03-17 19:44:36,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:36,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:36,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 102 [2025-03-17 19:44:36,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand