./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:13:02,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:13:02,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:13:02,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:13:02,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:13:02,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:13:02,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:13:02,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:13:02,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:13:02,172 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:13:02,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:13:02,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:13:02,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:13:02,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:13:02,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:13:02,173 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:13:02,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:02,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:13:02,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:13:02,174 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-jdk21/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 -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2025-02-08 14:13:02,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:13:02,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:13:02,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:13:02,428 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:13:02,429 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:13:02,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2025-02-08 14:13:03,601 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66ae0f955/945816bb6ef14d849421aa5b388f598e/FLAG21d455440 [2025-02-08 14:13:03,871 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:13:03,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2025-02-08 14:13:03,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66ae0f955/945816bb6ef14d849421aa5b388f598e/FLAG21d455440 [2025-02-08 14:13:04,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66ae0f955/945816bb6ef14d849421aa5b388f598e [2025-02-08 14:13:04,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:13:04,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:13:04,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:04,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:13:04,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:13:04,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72531e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04, skipping insertion in model container [2025-02-08 14:13:04,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:13:04,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:04,353 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:13:04,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:04,385 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:13:04,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04 WrapperNode [2025-02-08 14:13:04,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:04,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:04,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:13:04,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:13:04,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,422 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 180 [2025-02-08 14:13:04,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:04,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:13:04,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:13:04,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:13:04,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,455 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 14:13:04,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,462 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:13:04,471 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:13:04,471 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:13:04,471 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:13:04,472 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (1/1) ... [2025-02-08 14:13:04,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:04,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:13:04,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:13:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:13:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:13:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:13:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:13:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:13:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:13:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:13:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:13:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:13:04,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:13:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:13:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:13:04,525 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:13:04,609 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:13:04,611 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:13:04,872 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:13:04,873 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:13:05,049 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:13:05,049 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:13:05,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:05 BoogieIcfgContainer [2025-02-08 14:13:05,050 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:13:05,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:13:05,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:13:05,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:13:05,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:13:04" (1/3) ... [2025-02-08 14:13:05,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512ef54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:05, skipping insertion in model container [2025-02-08 14:13:05,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:04" (2/3) ... [2025-02-08 14:13:05,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512ef54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:05, skipping insertion in model container [2025-02-08 14:13:05,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:05" (3/3) ... [2025-02-08 14:13:05,056 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2025-02-08 14:13:05,068 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:13:05,069 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-multiply-verify.wvr.c that has 4 procedures, 47 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-02-08 14:13:05,069 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:13:05,122 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:13:05,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2025-02-08 14:13:05,181 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2025-02-08 14:13:05,182 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:13:05,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-02-08 14:13:05,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2025-02-08 14:13:05,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 44 transitions, 103 flow [2025-02-08 14:13:05,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:13:05,209 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;@64d60b2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:13:05,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 14:13:05,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:13:05,214 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:13:05,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:13:05,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:05,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:13:05,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:05,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash 479423, now seen corresponding path program 1 times [2025-02-08 14:13:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:05,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228403105] [2025-02-08 14:13:05,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:05,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:05,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:13:05,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:13:05,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:05,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:05,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228403105] [2025-02-08 14:13:05,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228403105] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:05,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:05,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:05,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528014095] [2025-02-08 14:13:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:05,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:05,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:05,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:05,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-08 14:13:05,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-02-08 14:13:05,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:05,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-08 14:13:05,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:05,929 INFO L124 PetriNetUnfolderBase]: 1666/2537 cut-off events. [2025-02-08 14:13:05,930 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2025-02-08 14:13:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 2537 events. 1666/2537 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14289 event pairs, 1461 based on Foata normal form. 1/1925 useless extension candidates. Maximal degree in co-relation 4794. Up to 2415 conditions per place. [2025-02-08 14:13:05,955 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 28 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2025-02-08 14:13:05,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 159 flow [2025-02-08 14:13:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-08 14:13:05,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2025-02-08 14:13:05,968 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 103 flow. Second operand 4 states and 80 transitions. [2025-02-08 14:13:05,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 159 flow [2025-02-08 14:13:05,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:05,977 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 94 flow [2025-02-08 14:13:05,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2025-02-08 14:13:05,982 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2025-02-08 14:13:05,982 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 94 flow [2025-02-08 14:13:05,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-02-08 14:13:05,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:05,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:13:05,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:13:05,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:05,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 14862556, now seen corresponding path program 1 times [2025-02-08 14:13:05,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:05,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870617370] [2025-02-08 14:13:05,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:05,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:05,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:13:05,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:13:05,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:05,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:06,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870617370] [2025-02-08 14:13:06,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870617370] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912784123] [2025-02-08 14:13:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:06,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:06,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:06,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:06,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-08 14:13:06,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-02-08 14:13:06,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:06,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-08 14:13:06,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:06,351 INFO L124 PetriNetUnfolderBase]: 1667/2541 cut-off events. [2025-02-08 14:13:06,351 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 14:13:06,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5078 conditions, 2541 events. 1667/2541 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14235 event pairs, 1461 based on Foata normal form. 1/1929 useless extension candidates. Maximal degree in co-relation 5050. Up to 2420 conditions per place. [2025-02-08 14:13:06,363 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2025-02-08 14:13:06,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 176 flow [2025-02-08 14:13:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-08 14:13:06,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2025-02-08 14:13:06,364 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 94 flow. Second operand 4 states and 80 transitions. [2025-02-08 14:13:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 176 flow [2025-02-08 14:13:06,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:06,365 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 113 flow [2025-02-08 14:13:06,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-02-08 14:13:06,366 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2025-02-08 14:13:06,366 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 113 flow [2025-02-08 14:13:06,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-02-08 14:13:06,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:06,366 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:13:06,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:13:06,367 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:06,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:06,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1400150782, now seen corresponding path program 1 times [2025-02-08 14:13:06,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:06,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668510470] [2025-02-08 14:13:06,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:06,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:06,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:13:06,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:13:06,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:06,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668510470] [2025-02-08 14:13:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668510470] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:06,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:06,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334976414] [2025-02-08 14:13:06,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:06,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:06,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:06,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:06,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-02-08 14:13:06,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-02-08 14:13:06,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:06,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-02-08 14:13:06,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:06,774 INFO L124 PetriNetUnfolderBase]: 1761/2735 cut-off events. [2025-02-08 14:13:06,774 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-02-08 14:13:06,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 2735 events. 1761/2735 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 15265 event pairs, 1402 based on Foata normal form. 63/2222 useless extension candidates. Maximal degree in co-relation 4792. Up to 2052 conditions per place. [2025-02-08 14:13:06,787 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 49 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2025-02-08 14:13:06,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 263 flow [2025-02-08 14:13:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-02-08 14:13:06,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-02-08 14:13:06,790 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 113 flow. Second operand 4 states and 112 transitions. [2025-02-08 14:13:06,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 263 flow [2025-02-08 14:13:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:06,791 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 141 flow [2025-02-08 14:13:06,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-02-08 14:13:06,793 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2025-02-08 14:13:06,793 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 141 flow [2025-02-08 14:13:06,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-02-08 14:13:06,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:06,793 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:13:06,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:13:06,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:06,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash 389247811, now seen corresponding path program 1 times [2025-02-08 14:13:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:06,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667479736] [2025-02-08 14:13:06,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:06,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:06,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:06,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:06,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:06,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:06,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667479736] [2025-02-08 14:13:06,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667479736] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:06,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241173750] [2025-02-08 14:13:06,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:06,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:06,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:06,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:13:06,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:06,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:06,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:06,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:06,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:06,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:06,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241173750] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:06,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-08 14:13:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331070278] [2025-02-08 14:13:06,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:06,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:13:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:06,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:13:06,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:13:06,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-08 14:13:06,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 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) [2025-02-08 14:13:06,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:06,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-08 14:13:06,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:07,302 INFO L124 PetriNetUnfolderBase]: 1764/2692 cut-off events. [2025-02-08 14:13:07,302 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2025-02-08 14:13:07,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6372 conditions, 2692 events. 1764/2692 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 14823 event pairs, 1490 based on Foata normal form. 0/2221 useless extension candidates. Maximal degree in co-relation 5612. Up to 2590 conditions per place. [2025-02-08 14:13:07,321 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 32 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2025-02-08 14:13:07,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 267 flow [2025-02-08 14:13:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2025-02-08 14:13:07,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32040816326530613 [2025-02-08 14:13:07,323 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 141 flow. Second operand 10 states and 157 transitions. [2025-02-08 14:13:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 267 flow [2025-02-08 14:13:07,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:07,325 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 218 flow [2025-02-08 14:13:07,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-02-08 14:13:07,325 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-02-08 14:13:07,325 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 218 flow [2025-02-08 14:13:07,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 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) [2025-02-08 14:13:07,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:07,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:07,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:07,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:07,530 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:07,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 407127973, now seen corresponding path program 1 times [2025-02-08 14:13:07,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:07,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045197510] [2025-02-08 14:13:07,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:07,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:07,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:07,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:07,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045197510] [2025-02-08 14:13:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045197510] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913886006] [2025-02-08 14:13:07,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:07,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:07,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:07,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:07,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:13:07,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:07,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:07,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:07,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:07,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:07,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:07,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:07,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913886006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:07,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:07,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-08 14:13:07,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832368177] [2025-02-08 14:13:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:07,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:07,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:07,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:13:07,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-02-08 14:13:07,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-02-08 14:13:07,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:07,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-02-08 14:13:07,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:07,862 INFO L124 PetriNetUnfolderBase]: 982/1562 cut-off events. [2025-02-08 14:13:07,863 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-02-08 14:13:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1562 events. 982/1562 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7815 event pairs, 786 based on Foata normal form. 0/1493 useless extension candidates. Maximal degree in co-relation 3529. Up to 1466 conditions per place. [2025-02-08 14:13:07,869 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 38 selfloop transitions, 1 changer transitions 1/49 dead transitions. [2025-02-08 14:13:07,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 282 flow [2025-02-08 14:13:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-02-08 14:13:07,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-08 14:13:07,870 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 218 flow. Second operand 3 states and 70 transitions. [2025-02-08 14:13:07,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 282 flow [2025-02-08 14:13:07,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 252 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:07,872 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 172 flow [2025-02-08 14:13:07,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-02-08 14:13:07,873 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2025-02-08 14:13:07,873 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 172 flow [2025-02-08 14:13:07,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-02-08 14:13:07,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:07,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:07,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:08,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:08,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:08,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1521282036, now seen corresponding path program 1 times [2025-02-08 14:13:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:08,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130977341] [2025-02-08 14:13:08,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:08,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:08,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:08,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:08,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:08,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130977341] [2025-02-08 14:13:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130977341] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:08,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365810013] [2025-02-08 14:13:08,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:08,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:08,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:08,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:08,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-02-08 14:13:08,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-02-08 14:13:08,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:08,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-02-08 14:13:08,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:08,184 INFO L124 PetriNetUnfolderBase]: 589/1011 cut-off events. [2025-02-08 14:13:08,184 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2025-02-08 14:13:08,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1011 events. 589/1011 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4819 event pairs, 475 based on Foata normal form. 103/1087 useless extension candidates. Maximal degree in co-relation 2221. Up to 915 conditions per place. [2025-02-08 14:13:08,188 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 35 selfloop transitions, 1 changer transitions 1/46 dead transitions. [2025-02-08 14:13:08,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 236 flow [2025-02-08 14:13:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2025-02-08 14:13:08,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2025-02-08 14:13:08,190 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 172 flow. Second operand 3 states and 65 transitions. [2025-02-08 14:13:08,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 236 flow [2025-02-08 14:13:08,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 231 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:08,191 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 153 flow [2025-02-08 14:13:08,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2025-02-08 14:13:08,192 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2025-02-08 14:13:08,192 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 153 flow [2025-02-08 14:13:08,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-02-08 14:13:08,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:08,192 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:08,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:13:08,192 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:08,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash 536064715, now seen corresponding path program 1 times [2025-02-08 14:13:08,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:08,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551498549] [2025-02-08 14:13:08,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:08,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:08,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:13:08,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:13:08,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:08,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551498549] [2025-02-08 14:13:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551498549] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:08,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:08,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248741888] [2025-02-08 14:13:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:08,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:08,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:08,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:08,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-08 14:13:08,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-02-08 14:13:08,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:08,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-08 14:13:08,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:08,338 INFO L124 PetriNetUnfolderBase]: 661/1064 cut-off events. [2025-02-08 14:13:08,339 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-02-08 14:13:08,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2351 conditions, 1064 events. 661/1064 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5016 event pairs, 556 based on Foata normal form. 55/1065 useless extension candidates. Maximal degree in co-relation 2337. Up to 993 conditions per place. [2025-02-08 14:13:08,344 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 36 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2025-02-08 14:13:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 225 flow [2025-02-08 14:13:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-02-08 14:13:08,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2025-02-08 14:13:08,346 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 153 flow. Second operand 3 states and 60 transitions. [2025-02-08 14:13:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 225 flow [2025-02-08 14:13:08,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:08,349 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 152 flow [2025-02-08 14:13:08,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2025-02-08 14:13:08,349 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2025-02-08 14:13:08,349 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 152 flow [2025-02-08 14:13:08,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-02-08 14:13:08,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:08,349 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:08,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:13:08,349 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:08,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash -561862543, now seen corresponding path program 1 times [2025-02-08 14:13:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472776049] [2025-02-08 14:13:08,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:08,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:13:08,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:13:08,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:08,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:08,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:08,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472776049] [2025-02-08 14:13:08,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472776049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:08,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:08,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817797260] [2025-02-08 14:13:08,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:08,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:08,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:08,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:08,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-02-08 14:13:08,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-02-08 14:13:08,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:08,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-02-08 14:13:08,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:08,498 INFO L124 PetriNetUnfolderBase]: 372/740 cut-off events. [2025-02-08 14:13:08,498 INFO L125 PetriNetUnfolderBase]: For 113/120 co-relation queries the response was YES. [2025-02-08 14:13:08,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 740 events. 372/740 cut-off events. For 113/120 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3726 event pairs, 134 based on Foata normal form. 28/762 useless extension candidates. Maximal degree in co-relation 1540. Up to 386 conditions per place. [2025-02-08 14:13:08,505 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 48 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-02-08 14:13:08,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 291 flow [2025-02-08 14:13:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-02-08 14:13:08,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2025-02-08 14:13:08,507 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 152 flow. Second operand 3 states and 80 transitions. [2025-02-08 14:13:08,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 291 flow [2025-02-08 14:13:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:08,509 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 174 flow [2025-02-08 14:13:08,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2025-02-08 14:13:08,509 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2025-02-08 14:13:08,509 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 174 flow [2025-02-08 14:13:08,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-02-08 14:13:08,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:08,510 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:13:08,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:13:08,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:08,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:08,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1157592604, now seen corresponding path program 2 times [2025-02-08 14:13:08,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:08,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133502037] [2025-02-08 14:13:08,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:08,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:08,520 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:08,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:13:08,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:08,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:08,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:08,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133502037] [2025-02-08 14:13:08,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133502037] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:08,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702464887] [2025-02-08 14:13:08,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:08,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:08,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:08,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:13:08,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:13:08,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:13:08,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:08,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:08,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:13:08,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:08,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:13:08,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702464887] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:08,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:13:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137097019] [2025-02-08 14:13:08,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:08,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:08,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:08,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:08,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-08 14:13:08,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-08 14:13:08,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:08,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-08 14:13:08,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:08,739 INFO L124 PetriNetUnfolderBase]: 372/693 cut-off events. [2025-02-08 14:13:08,739 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2025-02-08 14:13:08,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 693 events. 372/693 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3240 event pairs, 296 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 1630. Up to 583 conditions per place. [2025-02-08 14:13:08,745 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 23 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2025-02-08 14:13:08,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 240 flow [2025-02-08 14:13:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-02-08 14:13:08,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2025-02-08 14:13:08,746 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 174 flow. Second operand 4 states and 70 transitions. [2025-02-08 14:13:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 240 flow [2025-02-08 14:13:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 217 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-08 14:13:08,749 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 171 flow [2025-02-08 14:13:08,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-02-08 14:13:08,749 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2025-02-08 14:13:08,750 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 171 flow [2025-02-08 14:13:08,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-08 14:13:08,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:08,751 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:08,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:13:08,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:08,951 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:13:08,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 929974529, now seen corresponding path program 1 times [2025-02-08 14:13:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:08,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413845499] [2025-02-08 14:13:08,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:08,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:13:08,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:13:08,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:08,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:08,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:08,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413845499] [2025-02-08 14:13:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413845499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:08,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076815601] [2025-02-08 14:13:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:08,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:08,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:08,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:08,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-08 14:13:08,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-02-08 14:13:08,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:08,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-08 14:13:08,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:09,080 INFO L124 PetriNetUnfolderBase]: 372/721 cut-off events. [2025-02-08 14:13:09,080 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2025-02-08 14:13:09,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 721 events. 372/721 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3434 event pairs, 212 based on Foata normal form. 47/754 useless extension candidates. Maximal degree in co-relation 1526. Up to 450 conditions per place. [2025-02-08 14:13:09,082 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2025-02-08 14:13:09,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 311 flow [2025-02-08 14:13:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2025-02-08 14:13:09,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2025-02-08 14:13:09,083 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 171 flow. Second operand 3 states and 74 transitions. [2025-02-08 14:13:09,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 311 flow [2025-02-08 14:13:09,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 281 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:09,084 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-02-08 14:13:09,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-02-08 14:13:09,084 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2025-02-08 14:13:09,084 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-02-08 14:13:09,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-02-08 14:13:09,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2025-02-08 14:13:09,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-02-08 14:13:09,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-02-08 14:13:09,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:13:09,088 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:09,092 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:13:09,092 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:13:09,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:13:09 BasicIcfg [2025-02-08 14:13:09,096 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:13:09,097 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:13:09,097 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:13:09,097 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:13:09,097 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:05" (3/4) ... [2025-02-08 14:13:09,098 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:13:09,100 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:13:09,100 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:13:09,100 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-02-08 14:13:09,103 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 71 nodes and edges [2025-02-08 14:13:09,103 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-02-08 14:13:09,104 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-08 14:13:09,104 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:13:09,156 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:13:09,156 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:13:09,156 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:13:09,157 INFO L158 Benchmark]: Toolchain (without parser) took 4966.04ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 123.2MB in the beginning and 85.5MB in the end (delta: 37.7MB). Peak memory consumption was 111.8MB. Max. memory is 16.1GB. [2025-02-08 14:13:09,157 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:13:09,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.05ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 111.4MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:13:09,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.02ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:13:09,158 INFO L158 Benchmark]: Boogie Preprocessor took 45.68ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:13:09,158 INFO L158 Benchmark]: IcfgBuilder took 578.92ms. Allocated memory is still 167.8MB. Free memory was 107.5MB in the beginning and 58.6MB in the end (delta: 49.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 14:13:09,158 INFO L158 Benchmark]: TraceAbstraction took 4044.59ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 58.1MB in the beginning and 91.3MB in the end (delta: -33.2MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2025-02-08 14:13:09,158 INFO L158 Benchmark]: Witness Printer took 59.81ms. Allocated memory is still 243.3MB. Free memory was 91.3MB in the beginning and 85.5MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:13:09,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.05ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 111.4MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.02ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.68ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 578.92ms. Allocated memory is still 167.8MB. Free memory was 107.5MB in the beginning and 58.6MB in the end (delta: 49.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4044.59ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 58.1MB in the beginning and 91.3MB in the end (delta: -33.2MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Witness Printer took 59.81ms. Allocated memory is still 243.3MB. Free memory was 91.3MB in the beginning and 85.5MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: 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, 80 locations, 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: 3.9s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 686 IncrementalHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 11 mSDtfsCounter, 686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=4, InterpolantAutomatonStates: 41, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 133 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 7 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 70/104 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:13:09,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE