./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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/pthread-wmm/thin002_power.opt.i -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 e1655ef15816414a510c3a8c6c5388872fb389e863c7015deef825935bc10ec6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:39:03,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:39:03,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:39:03,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:39:03,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:39:03,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:39:03,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:39:03,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:39:03,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:39:03,370 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:39:03,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:39:03,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:39:03,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:39:03,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:39:03,370 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:39:03,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:39:03,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:39:03,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:39:03,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:39:03,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:39:03,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:39:03,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:39:03,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:39:03,376 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 -> e1655ef15816414a510c3a8c6c5388872fb389e863c7015deef825935bc10ec6 [2025-02-06 18:39:03,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:39:03,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:39:03,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:39:03,617 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:39:03,617 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:39:03,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i [2025-02-06 18:39:04,828 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/425c2bc57/1bcdd3420a0d41d38ec13fa49f25f0e2/FLAG8c8107a64 [2025-02-06 18:39:05,153 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:39:05,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_power.opt.i [2025-02-06 18:39:05,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/425c2bc57/1bcdd3420a0d41d38ec13fa49f25f0e2/FLAG8c8107a64 [2025-02-06 18:39:05,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/425c2bc57/1bcdd3420a0d41d38ec13fa49f25f0e2 [2025-02-06 18:39:05,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:39:05,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:39:05,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:39:05,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:39:05,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:39:05,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b94c4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05, skipping insertion in model container [2025-02-06 18:39:05,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:39:05,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:39:05,754 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:39:05,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:39:05,861 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:39:05,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05 WrapperNode [2025-02-06 18:39:05,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:39:05,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:39:05,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:39:05,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:39:05,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,904 INFO L138 Inliner]: procedures = 176, calls = 69, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 190 [2025-02-06 18:39:05,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:39:05,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:39:05,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:39:05,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:39:05,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,944 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2025-02-06 18:39:05,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,956 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:39:05,971 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:39:05,971 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:39:05,971 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:39:05,972 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (1/1) ... [2025-02-06 18:39:05,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:39:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:39:06,005 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) [2025-02-06 18:39:06,013 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 [2025-02-06 18:39:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 18:39:06,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 18:39:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 18:39:06,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 18:39:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 18:39:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 18:39:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 18:39:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 18:39:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:39:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:39:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:39:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:39:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:39:06,033 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:39:06,174 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:39:06,176 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:39:06,463 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:39:06,464 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:39:06,758 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:39:06,759 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:39:06,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:39:06 BoogieIcfgContainer [2025-02-06 18:39:06,759 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:39:06,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:39:06,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:39:06,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:39:06,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:39:05" (1/3) ... [2025-02-06 18:39:06,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61463255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:39:06, skipping insertion in model container [2025-02-06 18:39:06,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:39:05" (2/3) ... [2025-02-06 18:39:06,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61463255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:39:06, skipping insertion in model container [2025-02-06 18:39:06,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:39:06" (3/3) ... [2025-02-06 18:39:06,766 INFO L128 eAbstractionObserver]: Analyzing ICFG thin002_power.opt.i [2025-02-06 18:39:06,777 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:39:06,779 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG thin002_power.opt.i that has 5 procedures, 51 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-02-06 18:39:06,779 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:39:06,847 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:39:06,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 50 transitions, 116 flow [2025-02-06 18:39:06,909 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2025-02-06 18:39:06,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:39:06,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 0/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-02-06 18:39:06,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 50 transitions, 116 flow [2025-02-06 18:39:06,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 104 flow [2025-02-06 18:39:06,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:39:06,935 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;@43bab879, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:39:06,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 18:39:06,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:39:06,941 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-02-06 18:39:06,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:39:06,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:39:06,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:39:06,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:39:06,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:39:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1369952783, now seen corresponding path program 1 times [2025-02-06 18:39:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:39:06,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270750392] [2025-02-06 18:39:06,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:39:06,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:39:07,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:39:07,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:39:07,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:39:07,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:39:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:39:07,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:39:07,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270750392] [2025-02-06 18:39:07,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270750392] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:39:07,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:39:07,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:39:07,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516421871] [2025-02-06 18:39:07,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:39:07,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:39:07,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:39:07,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:39:07,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:39:07,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-06 18:39:07,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2025-02-06 18:39:07,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:39:07,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-06 18:39:07,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:39:14,512 INFO L124 PetriNetUnfolderBase]: 70107/92353 cut-off events. [2025-02-06 18:39:14,512 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2025-02-06 18:39:14,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185501 conditions, 92353 events. 70107/92353 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 2824. Compared 553374 event pairs, 23427 based on Foata normal form. 0/75376 useless extension candidates. Maximal degree in co-relation 185489. Up to 84897 conditions per place. [2025-02-06 18:39:15,008 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 65 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2025-02-06 18:39:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 309 flow [2025-02-06 18:39:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:39:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:39:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-02-06 18:39:15,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68 [2025-02-06 18:39:15,020 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 104 flow. Second operand 3 states and 102 transitions. [2025-02-06 18:39:15,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 309 flow [2025-02-06 18:39:15,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:39:15,032 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 147 flow [2025-02-06 18:39:15,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2025-02-06 18:39:15,037 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2025-02-06 18:39:15,039 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 147 flow [2025-02-06 18:39:15,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2025-02-06 18:39:15,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:39:15,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:39:15,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:39:15,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:39:15,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:39:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 286911792, now seen corresponding path program 1 times [2025-02-06 18:39:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:39:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550605712] [2025-02-06 18:39:15,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:39:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:39:15,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:39:15,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:39:15,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:39:15,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:39:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:39:15,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:39:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550605712] [2025-02-06 18:39:15,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550605712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:39:15,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:39:15,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:39:15,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004137403] [2025-02-06 18:39:15,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:39:15,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:39:15,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:39:15,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:39:15,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:39:15,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-06 18:39:15,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2025-02-06 18:39:15,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:39:15,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-06 18:39:15,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:39:20,382 INFO L124 PetriNetUnfolderBase]: 46801/61715 cut-off events. [2025-02-06 18:39:20,383 INFO L125 PetriNetUnfolderBase]: For 3863/3863 co-relation queries the response was YES. [2025-02-06 18:39:20,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140384 conditions, 61715 events. 46801/61715 cut-off events. For 3863/3863 co-relation queries the response was YES. Maximal size of possible extension queue 1882. Compared 357343 event pairs, 14101 based on Foata normal form. 0/55410 useless extension candidates. Maximal degree in co-relation 140373. Up to 54258 conditions per place. [2025-02-06 18:39:20,696 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 61 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2025-02-06 18:39:20,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 317 flow [2025-02-06 18:39:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:39:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:39:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-02-06 18:39:20,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2025-02-06 18:39:20,698 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 147 flow. Second operand 4 states and 102 transitions. [2025-02-06 18:39:20,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 317 flow [2025-02-06 18:39:20,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:39:20,705 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 136 flow [2025-02-06 18:39:20,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2025-02-06 18:39:20,706 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2025-02-06 18:39:20,706 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 136 flow [2025-02-06 18:39:20,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2025-02-06 18:39:20,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:39:20,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:39:20,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:39:20,707 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:39:20,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:39:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash 286911793, now seen corresponding path program 1 times [2025-02-06 18:39:20,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:39:20,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711857246] [2025-02-06 18:39:20,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:39:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:39:20,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:39:20,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:39:20,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:39:20,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:39:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:39:20,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:39:20,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711857246] [2025-02-06 18:39:20,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711857246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:39:20,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:39:20,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:39:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733379667] [2025-02-06 18:39:20,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:39:20,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:39:20,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:39:20,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:39:20,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:39:20,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-06 18:39:20,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2025-02-06 18:39:20,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:39:20,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-06 18:39:20,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:39:24,496 INFO L124 PetriNetUnfolderBase]: 35051/46433 cut-off events. [2025-02-06 18:39:24,497 INFO L125 PetriNetUnfolderBase]: For 6978/6978 co-relation queries the response was YES. [2025-02-06 18:39:24,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103841 conditions, 46433 events. 35051/46433 cut-off events. For 6978/6978 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 261206 event pairs, 7359 based on Foata normal form. 0/44456 useless extension candidates. Maximal degree in co-relation 103829. Up to 23489 conditions per place. [2025-02-06 18:39:24,675 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 87 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2025-02-06 18:39:24,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 100 transitions, 454 flow [2025-02-06 18:39:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:39:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:39:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-02-06 18:39:24,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.66 [2025-02-06 18:39:24,677 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 136 flow. Second operand 4 states and 132 transitions. [2025-02-06 18:39:24,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 100 transitions, 454 flow [2025-02-06 18:39:24,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:39:24,686 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 188 flow [2025-02-06 18:39:24,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2025-02-06 18:39:24,686 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2025-02-06 18:39:24,687 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 188 flow [2025-02-06 18:39:24,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2025-02-06 18:39:24,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:39:24,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:39:24,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:39:24,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:39:24,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:39:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 948099098, now seen corresponding path program 1 times [2025-02-06 18:39:24,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:39:24,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217562377] [2025-02-06 18:39:24,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:39:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:39:24,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:39:24,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:39:24,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:39:24,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:39:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:39:24,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:39:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217562377] [2025-02-06 18:39:24,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217562377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:39:24,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:39:24,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:39:24,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465875033] [2025-02-06 18:39:24,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:39:24,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:39:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:39:24,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:39:24,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:39:24,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-06 18:39:24,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-06 18:39:24,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:39:24,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-06 18:39:24,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:39:27,958 INFO L124 PetriNetUnfolderBase]: 30683/40529 cut-off events. [2025-02-06 18:39:27,958 INFO L125 PetriNetUnfolderBase]: For 16614/16614 co-relation queries the response was YES. [2025-02-06 18:39:28,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99276 conditions, 40529 events. 30683/40529 cut-off events. For 16614/16614 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 224626 event pairs, 5631 based on Foata normal form. 0/40256 useless extension candidates. Maximal degree in co-relation 99263. Up to 15488 conditions per place. [2025-02-06 18:39:28,114 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 107 selfloop transitions, 13 changer transitions 4/128 dead transitions. [2025-02-06 18:39:28,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 128 transitions, 620 flow [2025-02-06 18:39:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:39:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:39:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2025-02-06 18:39:28,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.672 [2025-02-06 18:39:28,116 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 188 flow. Second operand 5 states and 168 transitions. [2025-02-06 18:39:28,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 128 transitions, 620 flow [2025-02-06 18:39:28,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 128 transitions, 602 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 18:39:28,139 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 212 flow [2025-02-06 18:39:28,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2025-02-06 18:39:28,140 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2025-02-06 18:39:28,140 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 212 flow [2025-02-06 18:39:28,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-06 18:39:28,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:39:28,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:39:28,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:39:28,140 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:39:28,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:39:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1628192975, now seen corresponding path program 1 times [2025-02-06 18:39:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:39:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973184115] [2025-02-06 18:39:28,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:39:28,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:39:28,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:39:28,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:39:28,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:39:28,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:39:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:39:28,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:39:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973184115] [2025-02-06 18:39:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973184115] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:39:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:39:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:39:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126414643] [2025-02-06 18:39:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:39:28,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:39:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:39:28,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:39:28,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:39:28,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-06 18:39:28,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2025-02-06 18:39:28,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:39:28,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-06 18:39:28,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand