./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-wmm/mix004.oepc.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/mix004.oepc.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 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:32:44,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:32:44,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:32:44,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:32:44,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:32:44,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:32:44,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:32:44,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:32:44,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:32:44,329 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:32:44,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:32:44,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:32:44,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:32:44,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:32:44,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:32:44,332 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:32:44,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:32:44,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:32:44,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:32:44,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:32:44,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:32:44,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:32:44,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:32:44,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:32:44,333 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 -> 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 [2025-02-06 18:32:44,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:32:44,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:32:44,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:32:44,647 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:32:44,647 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:32:44,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2025-02-06 18:32:45,848 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a92cc5ae4/e0e8f61895ff45e9aa1ce4c8ff00c46d/FLAG750c8fde0 [2025-02-06 18:32:46,234 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:32:46,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2025-02-06 18:32:46,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a92cc5ae4/e0e8f61895ff45e9aa1ce4c8ff00c46d/FLAG750c8fde0 [2025-02-06 18:32:46,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a92cc5ae4/e0e8f61895ff45e9aa1ce4c8ff00c46d [2025-02-06 18:32:46,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:32:46,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:32:46,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:32:46,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:32:46,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:32:46,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6fd936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46, skipping insertion in model container [2025-02-06 18:32:46,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:32:46,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:32:46,597 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:32:46,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:32:46,697 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:32:46,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46 WrapperNode [2025-02-06 18:32:46,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:32:46,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:32:46,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:32:46,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:32:46,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,743 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2025-02-06 18:32:46,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:32:46,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:32:46,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:32:46,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:32:46,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,780 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 18:32:46,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,789 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:32:46,801 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:32:46,801 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:32:46,801 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:32:46,802 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (1/1) ... [2025-02-06 18:32:46,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:32:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:32:46,839 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 18:32:46,842 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 18:32:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:32:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:32:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 18:32:46,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 18:32:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 18:32:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 18:32:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 18:32:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 18:32:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 18:32:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 18:32:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:32:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:32:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:32:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:32:46,866 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 18:32:47,014 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:32:47,016 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:32:47,434 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:32:47,434 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:32:47,718 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:32:47,718 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:32:47,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:32:47 BoogieIcfgContainer [2025-02-06 18:32:47,719 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:32:47,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:32:47,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:32:47,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:32:47,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:32:46" (1/3) ... [2025-02-06 18:32:47,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299b1ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:32:47, skipping insertion in model container [2025-02-06 18:32:47,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:32:46" (2/3) ... [2025-02-06 18:32:47,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299b1ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:32:47, skipping insertion in model container [2025-02-06 18:32:47,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:32:47" (3/3) ... [2025-02-06 18:32:47,729 INFO L128 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2025-02-06 18:32:47,744 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:32:47,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix004.oepc.i that has 5 procedures, 53 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-02-06 18:32:47,746 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:32:47,836 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:32:47,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2025-02-06 18:32:47,899 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2025-02-06 18:32:47,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:32:47,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 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. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-02-06 18:32:47,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2025-02-06 18:32:47,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2025-02-06 18:32:47,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:32:47,933 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;@17c75d94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:32:47,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 18:32:47,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:32:47,945 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-02-06 18:32:47,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:32:47,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:47,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:32:47,946 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 18:32:47,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1103552827, now seen corresponding path program 1 times [2025-02-06 18:32:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:47,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304056268] [2025-02-06 18:32:47,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:47,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:48,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:32:48,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:32:48,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:48,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:48,281 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 18:32:48,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:48,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304056268] [2025-02-06 18:32:48,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304056268] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:48,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:48,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:32:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916309551] [2025-02-06 18:32:48,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:48,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:32:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:48,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:32:48,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:32:48,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-02-06 18:32:48,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 108 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 18:32:48,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:48,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-02-06 18:32:48,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:32:55,897 INFO L124 PetriNetUnfolderBase]: 88167/115851 cut-off events. [2025-02-06 18:32:55,898 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2025-02-06 18:32:56,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232583 conditions, 115851 events. 88167/115851 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 3197. Compared 702180 event pairs, 28905 based on Foata normal form. 0/96480 useless extension candidates. Maximal degree in co-relation 232571. Up to 104113 conditions per place. [2025-02-06 18:32:56,702 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 69 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2025-02-06 18:32:56,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 325 flow [2025-02-06 18:32:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:32:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:32:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-02-06 18:32:56,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2025-02-06 18:32:56,713 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 3 states and 106 transitions. [2025-02-06 18:32:56,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 325 flow [2025-02-06 18:32:56,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 318 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:32:56,732 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 151 flow [2025-02-06 18:32:56,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2025-02-06 18:32:56,736 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-02-06 18:32:56,738 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 151 flow [2025-02-06 18:32:56,738 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 18:32:56,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:56,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:32:56,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:32:56,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:32:56,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1960729288, now seen corresponding path program 1 times [2025-02-06 18:32:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942166221] [2025-02-06 18:32:56,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:56,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:56,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:32:56,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:32:56,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:56,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:56,972 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 18:32:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942166221] [2025-02-06 18:32:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942166221] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:56,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:32:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209222676] [2025-02-06 18:32:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:56,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:32:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:56,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:32:56,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:32:56,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-02-06 18:32:56,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 151 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 18:32:56,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:56,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-02-06 18:32:56,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:33:03,145 INFO L124 PetriNetUnfolderBase]: 71405/95157 cut-off events. [2025-02-06 18:33:03,146 INFO L125 PetriNetUnfolderBase]: For 5079/5079 co-relation queries the response was YES. [2025-02-06 18:33:03,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214746 conditions, 95157 events. 71405/95157 cut-off events. For 5079/5079 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 583279 event pairs, 15319 based on Foata normal form. 0/84734 useless extension candidates. Maximal degree in co-relation 214735. Up to 47266 conditions per place. [2025-02-06 18:33:03,921 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 97 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2025-02-06 18:33:03,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 521 flow [2025-02-06 18:33:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:33:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:33:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-02-06 18:33:03,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7019230769230769 [2025-02-06 18:33:03,926 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 151 flow. Second operand 4 states and 146 transitions. [2025-02-06 18:33:03,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 521 flow [2025-02-06 18:33:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 114 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:33:03,937 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 249 flow [2025-02-06 18:33:03,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2025-02-06 18:33:03,938 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2025-02-06 18:33:03,938 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 249 flow [2025-02-06 18:33:03,938 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 18:33:03,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:33:03,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:33:03,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:33:03,939 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-06 18:33:03,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:33:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1960729287, now seen corresponding path program 1 times [2025-02-06 18:33:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:33:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735717756] [2025-02-06 18:33:03,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:33:03,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:33:03,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:33:03,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:33:03,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:33:03,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:33:04,104 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 18:33:04,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:33:04,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735717756] [2025-02-06 18:33:04,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735717756] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:33:04,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:33:04,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:33:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516172050] [2025-02-06 18:33:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:33:04,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:33:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:33:04,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:33:04,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:33:04,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-02-06 18:33:04,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 249 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 18:33:04,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:33:04,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-02-06 18:33:04,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:33:08,177 INFO L124 PetriNetUnfolderBase]: 46763/61663 cut-off events. [2025-02-06 18:33:08,177 INFO L125 PetriNetUnfolderBase]: For 41508/41508 co-relation queries the response was YES. [2025-02-06 18:33:08,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148097 conditions, 61663 events. 46763/61663 cut-off events. For 41508/41508 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 353883 event pairs, 14021 based on Foata normal form. 5596/65144 useless extension candidates. Maximal degree in co-relation 148083. Up to 49924 conditions per place. [2025-02-06 18:33:08,580 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 69 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2025-02-06 18:33:08,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 399 flow [2025-02-06 18:33:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:33:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:33:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-02-06 18:33:08,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2025-02-06 18:33:08,586 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 249 flow. Second operand 4 states and 106 transitions. [2025-02-06 18:33:08,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 399 flow [2025-02-06 18:33:09,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 376 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 18:33:09,798 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 180 flow [2025-02-06 18:33:09,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2025-02-06 18:33:09,799 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-02-06 18:33:09,799 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 180 flow [2025-02-06 18:33:09,799 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 18:33:09,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:33:09,799 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] [2025-02-06 18:33:09,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:33:09,800 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 18:33:09,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:33:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1741595930, now seen corresponding path program 1 times [2025-02-06 18:33:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:33:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853261682] [2025-02-06 18:33:09,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:33:09,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:33:09,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:33:09,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:33:09,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:33:09,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:33:09,962 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 18:33:09,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:33:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853261682] [2025-02-06 18:33:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853261682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:33:09,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:33:09,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:33:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637168779] [2025-02-06 18:33:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:33:09,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:33:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:33:09,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:33:09,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:33:09,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-02-06 18:33:09,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 18:33:09,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:33:09,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-02-06 18:33:09,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:33:13,500 INFO L124 PetriNetUnfolderBase]: 41915/55111 cut-off events. [2025-02-06 18:33:13,500 INFO L125 PetriNetUnfolderBase]: For 19048/19048 co-relation queries the response was YES. [2025-02-06 18:33:13,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126202 conditions, 55111 events. 41915/55111 cut-off events. For 19048/19048 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 311710 event pairs, 8871 based on Foata normal form. 0/54868 useless extension candidates. Maximal degree in co-relation 126189. Up to 21980 conditions per place. [2025-02-06 18:33:13,697 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 115 selfloop transitions, 13 changer transitions 4/136 dead transitions. [2025-02-06 18:33:13,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 640 flow [2025-02-06 18:33:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:33:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:33:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-02-06 18:33:13,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2025-02-06 18:33:13,698 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 180 flow. Second operand 5 states and 176 transitions. [2025-02-06 18:33:13,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 640 flow [2025-02-06 18:33:13,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 136 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:33:13,715 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2025-02-06 18:33:13,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2025-02-06 18:33:13,716 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-02-06 18:33:13,716 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2025-02-06 18:33:13,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 18:33:13,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:33:13,717 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, 1, 1] [2025-02-06 18:33:13,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:33:13,717 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 18:33:13,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:33:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1862562992, now seen corresponding path program 1 times [2025-02-06 18:33:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:33:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881460839] [2025-02-06 18:33:13,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:33:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:33:13,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:33:13,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:33:13,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:33:13,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:33:13,890 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 18:33:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:33:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881460839] [2025-02-06 18:33:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881460839] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:33:13,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:33:13,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:33:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201598368] [2025-02-06 18:33:13,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:33:13,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:33:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:33:13,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:33:13,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:33:13,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2025-02-06 18:33:13,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 18:33:13,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:33:13,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2025-02-06 18:33:13,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:33:17,539 INFO L124 PetriNetUnfolderBase]: 40955/53815 cut-off events. [2025-02-06 18:33:17,539 INFO L125 PetriNetUnfolderBase]: For 32188/32188 co-relation queries the response was YES. [2025-02-06 18:33:17,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131937 conditions, 53815 events. 40955/53815 cut-off events. For 32188/32188 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 305290 event pairs, 8703 based on Foata normal form. 224/54020 useless extension candidates. Maximal degree in co-relation 131923. Up to 21980 conditions per place. [2025-02-06 18:33:17,668 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 0 selfloop transitions, 0 changer transitions 128/128 dead transitions. [2025-02-06 18:33:17,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 128 transitions, 604 flow [2025-02-06 18:33:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:33:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:33:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2025-02-06 18:33:17,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2025-02-06 18:33:17,670 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 216 flow. Second operand 6 states and 176 transitions. [2025-02-06 18:33:17,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 128 transitions, 604 flow