./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/reorder_2.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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:53:18,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:53:18,905 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:53:18,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:53:18,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:53:18,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:53:18,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:53:18,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:53:18,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:53:18,923 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:53:18,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:53:18,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:53:18,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:53:18,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:53:18,923 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:53:18,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:53:18,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:53:18,923 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:53:18,924 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:53:18,925 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:53:18,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:53:18,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:53:18,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:53:18,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:53:18,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:53:18,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:53:18,926 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 -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2025-02-08 13:53:19,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:53:19,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:53:19,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:53:19,083 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:53:19,084 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:53:19,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_2.i [2025-02-08 13:53:20,118 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/874fa668a/1bd6400cd0714211a0d17a6de4bffc1e/FLAGd0a15d4c7 [2025-02-08 13:53:20,440 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:53:20,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2.i [2025-02-08 13:53:20,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/874fa668a/1bd6400cd0714211a0d17a6de4bffc1e/FLAGd0a15d4c7 [2025-02-08 13:53:20,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/874fa668a/1bd6400cd0714211a0d17a6de4bffc1e [2025-02-08 13:53:20,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:53:20,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:53:20,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:53:20,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:53:20,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:53:20,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:53:20" (1/1) ... [2025-02-08 13:53:20,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c453938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:20, skipping insertion in model container [2025-02-08 13:53:20,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:53:20" (1/1) ... [2025-02-08 13:53:20,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:53:21,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:53:21,052 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:53:21,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:53:21,140 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:53:21,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21 WrapperNode [2025-02-08 13:53:21,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:53:21,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:53:21,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:53:21,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:53:21,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,173 INFO L138 Inliner]: procedures = 372, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 133 [2025-02-08 13:53:21,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:53:21,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:53:21,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:53:21,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:53:21,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,197 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-02-08 13:53:21,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,203 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:53:21,211 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:53:21,211 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:53:21,212 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:53:21,212 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (1/1) ... [2025-02-08 13:53:21,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:53:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:53:21,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 13:53:21,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 13:53:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-02-08 13:53:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-02-08 13:53:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 13:53:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:53:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:53:21,268 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 13:53:21,348 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:53:21,349 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:53:21,523 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260: havoc main_~#setPool~0#1.base, main_~#setPool~0#1.offset; [2025-02-08 13:53:21,523 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260-1: SUMMARY for call ULTIMATE.dealloc(main_~#setPool~0#1.base, main_~#setPool~0#1.offset); srcloc: null [2025-02-08 13:53:21,523 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261: havoc main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset; [2025-02-08 13:53:21,523 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261-1: SUMMARY for call ULTIMATE.dealloc(main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset); srcloc: null [2025-02-08 13:53:21,524 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:53:21,524 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:53:21,637 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:53:21,637 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:53:21,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:21 BoogieIcfgContainer [2025-02-08 13:53:21,637 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:53:21,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:53:21,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:53:21,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:53:21,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:53:20" (1/3) ... [2025-02-08 13:53:21,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d7fee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:53:21, skipping insertion in model container [2025-02-08 13:53:21,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:53:21" (2/3) ... [2025-02-08 13:53:21,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d7fee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:53:21, skipping insertion in model container [2025-02-08 13:53:21,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:53:21" (3/3) ... [2025-02-08 13:53:21,643 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2025-02-08 13:53:21,656 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:53:21,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 40 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-02-08 13:53:21,657 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:53:21,683 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 13:53:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 110 flow [2025-02-08 13:53:21,756 INFO L124 PetriNetUnfolderBase]: 8/100 cut-off events. [2025-02-08 13:53:21,758 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 13:53:21,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 100 events. 8/100 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 370 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2025-02-08 13:53:21,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 110 flow [2025-02-08 13:53:21,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 108 flow [2025-02-08 13:53:21,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:53:21,772 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;@1e62b437, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:53:21,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-08 13:53:21,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:53:21,776 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-02-08 13:53:21,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:21,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:21,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 13:53:21,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:21,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash 320789903, now seen corresponding path program 1 times [2025-02-08 13:53:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456724902] [2025-02-08 13:53:21,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:21,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:21,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 13:53:21,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 13:53:21,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:21,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456724902] [2025-02-08 13:53:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456724902] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8271972] [2025-02-08 13:53:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:22,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:22,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:22,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:22,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:22,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2025-02-08 13:53:22,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:22,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:22,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2025-02-08 13:53:22,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:22,201 INFO L124 PetriNetUnfolderBase]: 291/685 cut-off events. [2025-02-08 13:53:22,201 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-08 13:53:22,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 685 events. 291/685 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3530 event pairs, 189 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 943. Up to 392 conditions per place. [2025-02-08 13:53:22,213 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 41 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2025-02-08 13:53:22,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 268 flow [2025-02-08 13:53:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-08 13:53:22,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-02-08 13:53:22,225 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 108 flow. Second operand 4 states and 110 transitions. [2025-02-08 13:53:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 268 flow [2025-02-08 13:53:22,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:53:22,232 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 142 flow [2025-02-08 13:53:22,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2025-02-08 13:53:22,238 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2025-02-08 13:53:22,238 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 142 flow [2025-02-08 13:53:22,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:22,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:22,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:53:22,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:53:22,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:22,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1352516701, now seen corresponding path program 1 times [2025-02-08 13:53:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770680172] [2025-02-08 13:53:22,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:22,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:53:22,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:53:22,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:22,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:22,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770680172] [2025-02-08 13:53:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770680172] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:22,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889011553] [2025-02-08 13:53:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:22,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:22,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:22,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:22,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:22,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2025-02-08 13:53:22,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:22,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:22,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2025-02-08 13:53:22,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:22,507 INFO L124 PetriNetUnfolderBase]: 289/683 cut-off events. [2025-02-08 13:53:22,508 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2025-02-08 13:53:22,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 683 events. 289/683 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3568 event pairs, 165 based on Foata normal form. 40/702 useless extension candidates. Maximal degree in co-relation 1049. Up to 352 conditions per place. [2025-02-08 13:53:22,513 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 44 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2025-02-08 13:53:22,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 300 flow [2025-02-08 13:53:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-02-08 13:53:22,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2025-02-08 13:53:22,516 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 142 flow. Second operand 4 states and 111 transitions. [2025-02-08 13:53:22,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 300 flow [2025-02-08 13:53:22,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:22,518 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 154 flow [2025-02-08 13:53:22,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-02-08 13:53:22,518 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2025-02-08 13:53:22,520 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 154 flow [2025-02-08 13:53:22,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:22,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:22,520 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:22,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:53:22,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:22,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 350035123, now seen corresponding path program 1 times [2025-02-08 13:53:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172596956] [2025-02-08 13:53:22,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:22,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:53:22,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:53:22,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:22,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:53:22,549 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:53:22,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:53:22,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:53:22,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:22,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:53:22,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:53:22,587 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:53:22,588 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-02-08 13:53:22,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-02-08 13:53:22,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-02-08 13:53:22,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2025-02-08 13:53:22,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:53:22,591 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 13:53:22,593 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:53:22,593 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 13:53:22,608 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-02-08 13:53:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 162 flow [2025-02-08 13:53:22,634 INFO L124 PetriNetUnfolderBase]: 57/387 cut-off events. [2025-02-08 13:53:22,634 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2025-02-08 13:53:22,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 387 events. 57/387 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2200 event pairs, 1 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 237. Up to 32 conditions per place. [2025-02-08 13:53:22,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 59 transitions, 162 flow [2025-02-08 13:53:22,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 160 flow [2025-02-08 13:53:22,637 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:53:22,638 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;@1e62b437, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:53:22,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-08 13:53:22,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:53:22,640 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-02-08 13:53:22,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:22,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:22,640 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 13:53:22,640 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:22,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash 375192976, now seen corresponding path program 1 times [2025-02-08 13:53:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:22,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42491079] [2025-02-08 13:53:22,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:22,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:22,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 13:53:22,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 13:53:22,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:22,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42491079] [2025-02-08 13:53:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42491079] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:22,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743137880] [2025-02-08 13:53:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:22,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:22,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:22,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:22,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-02-08 13:53:22,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:22,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:22,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-02-08 13:53:22,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:24,536 INFO L124 PetriNetUnfolderBase]: 16821/27575 cut-off events. [2025-02-08 13:53:24,536 INFO L125 PetriNetUnfolderBase]: For 2236/2236 co-relation queries the response was YES. [2025-02-08 13:53:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53416 conditions, 27575 events. 16821/27575 cut-off events. For 2236/2236 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 213233 event pairs, 7893 based on Foata normal form. 4/25213 useless extension candidates. Maximal degree in co-relation 30311. Up to 12614 conditions per place. [2025-02-08 13:53:24,691 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 71 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2025-02-08 13:53:24,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 420 flow [2025-02-08 13:53:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:24,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-02-08 13:53:24,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2025-02-08 13:53:24,694 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 160 flow. Second operand 4 states and 146 transitions. [2025-02-08 13:53:24,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 420 flow [2025-02-08 13:53:24,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:53:24,702 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 232 flow [2025-02-08 13:53:24,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2025-02-08 13:53:24,703 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2025-02-08 13:53:24,704 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 232 flow [2025-02-08 13:53:24,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:24,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:24,704 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:53:24,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:53:24,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:24,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1256184954, now seen corresponding path program 1 times [2025-02-08 13:53:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245544213] [2025-02-08 13:53:24,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:24,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:53:24,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:53:24,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:24,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245544213] [2025-02-08 13:53:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245544213] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:24,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:53:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533723417] [2025-02-08 13:53:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:24,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:24,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:24,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:24,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:24,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-02-08 13:53:24,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:24,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:24,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-02-08 13:53:24,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:26,610 INFO L124 PetriNetUnfolderBase]: 18645/29863 cut-off events. [2025-02-08 13:53:26,610 INFO L125 PetriNetUnfolderBase]: For 6864/6876 co-relation queries the response was YES. [2025-02-08 13:53:26,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62492 conditions, 29863 events. 18645/29863 cut-off events. For 6864/6876 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 226707 event pairs, 8637 based on Foata normal form. 168/29082 useless extension candidates. Maximal degree in co-relation 35571. Up to 14005 conditions per place. [2025-02-08 13:53:26,750 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 77 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2025-02-08 13:53:26,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 500 flow [2025-02-08 13:53:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 13:53:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 13:53:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-02-08 13:53:26,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2025-02-08 13:53:26,755 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 232 flow. Second operand 4 states and 152 transitions. [2025-02-08 13:53:26,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 500 flow [2025-02-08 13:53:26,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 102 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:53:26,765 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 268 flow [2025-02-08 13:53:26,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2025-02-08 13:53:26,766 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2025-02-08 13:53:26,766 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 268 flow [2025-02-08 13:53:26,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:26,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:26,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:26,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 13:53:26,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:26,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:26,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1167179645, now seen corresponding path program 1 times [2025-02-08 13:53:26,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:26,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847075138] [2025-02-08 13:53:26,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:26,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:26,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:53:26,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:53:26,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:26,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847075138] [2025-02-08 13:53:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847075138] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:53:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357393681] [2025-02-08 13:53:26,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:26,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:26,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:26,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:26,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:53:26,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-02-08 13:53:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:26,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-02-08 13:53:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:28,545 INFO L124 PetriNetUnfolderBase]: 16797/27787 cut-off events. [2025-02-08 13:53:28,545 INFO L125 PetriNetUnfolderBase]: For 12008/12008 co-relation queries the response was YES. [2025-02-08 13:53:28,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61185 conditions, 27787 events. 16797/27787 cut-off events. For 12008/12008 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 217974 event pairs, 6105 based on Foata normal form. 16/26839 useless extension candidates. Maximal degree in co-relation 34683. Up to 12614 conditions per place. [2025-02-08 13:53:28,644 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 80 selfloop transitions, 11 changer transitions 0/107 dead transitions. [2025-02-08 13:53:28,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 552 flow [2025-02-08 13:53:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2025-02-08 13:53:28,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2025-02-08 13:53:28,646 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 268 flow. Second operand 6 states and 188 transitions. [2025-02-08 13:53:28,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 552 flow [2025-02-08 13:53:28,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 107 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:53:28,654 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 278 flow [2025-02-08 13:53:28,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2025-02-08 13:53:28,655 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2025-02-08 13:53:28,655 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 278 flow [2025-02-08 13:53:28,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:28,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:28,655 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:28,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 13:53:28,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:28,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash 815771315, now seen corresponding path program 1 times [2025-02-08 13:53:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152990804] [2025-02-08 13:53:28,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:28,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:53:28,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:53:28,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:28,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:28,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:28,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152990804] [2025-02-08 13:53:28,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152990804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:28,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 13:53:28,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838763520] [2025-02-08 13:53:28,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:28,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:28,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:28,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:28,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:53:28,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-02-08 13:53:28,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:28,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:28,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-02-08 13:53:28,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:30,304 INFO L124 PetriNetUnfolderBase]: 17709/28911 cut-off events. [2025-02-08 13:53:30,305 INFO L125 PetriNetUnfolderBase]: For 15635/15639 co-relation queries the response was YES. [2025-02-08 13:53:30,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64379 conditions, 28911 events. 17709/28911 cut-off events. For 15635/15639 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 224478 event pairs, 5745 based on Foata normal form. 336/28298 useless extension candidates. Maximal degree in co-relation 36567. Up to 12366 conditions per place. [2025-02-08 13:53:30,430 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 98 selfloop transitions, 11 changer transitions 0/124 dead transitions. [2025-02-08 13:53:30,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 634 flow [2025-02-08 13:53:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2025-02-08 13:53:30,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2025-02-08 13:53:30,434 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 278 flow. Second operand 6 states and 206 transitions. [2025-02-08 13:53:30,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 634 flow [2025-02-08 13:53:30,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 124 transitions, 614 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 13:53:30,447 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 276 flow [2025-02-08 13:53:30,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-02-08 13:53:30,448 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2025-02-08 13:53:30,448 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 276 flow [2025-02-08 13:53:30,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:30,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:30,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 13:53:30,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 13:53:30,449 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:30,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1822830952, now seen corresponding path program 1 times [2025-02-08 13:53:30,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060581660] [2025-02-08 13:53:30,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:30,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:53:30,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:53:30,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:30,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:30,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060581660] [2025-02-08 13:53:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060581660] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:30,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 13:53:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928372088] [2025-02-08 13:53:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:30,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:30,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:30,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:53:30,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-02-08 13:53:30,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:30,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:30,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-02-08 13:53:30,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:32,207 INFO L124 PetriNetUnfolderBase]: 16773/27584 cut-off events. [2025-02-08 13:53:32,207 INFO L125 PetriNetUnfolderBase]: For 16389/16389 co-relation queries the response was YES. [2025-02-08 13:53:32,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62340 conditions, 27584 events. 16773/27584 cut-off events. For 16389/16389 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 214614 event pairs, 5317 based on Foata normal form. 16/26652 useless extension candidates. Maximal degree in co-relation 35353. Up to 12614 conditions per place. [2025-02-08 13:53:32,316 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 80 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2025-02-08 13:53:32,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 574 flow [2025-02-08 13:53:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2025-02-08 13:53:32,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338983050847458 [2025-02-08 13:53:32,318 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 276 flow. Second operand 6 states and 189 transitions. [2025-02-08 13:53:32,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 574 flow [2025-02-08 13:53:32,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 546 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-02-08 13:53:32,329 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 278 flow [2025-02-08 13:53:32,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-02-08 13:53:32,331 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2025-02-08 13:53:32,331 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 278 flow [2025-02-08 13:53:32,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:32,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:32,331 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:32,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 13:53:32,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:32,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash -480892670, now seen corresponding path program 1 times [2025-02-08 13:53:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086531263] [2025-02-08 13:53:32,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:32,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:53:32,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:53:32,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:32,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:32,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086531263] [2025-02-08 13:53:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086531263] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 13:53:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391605190] [2025-02-08 13:53:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:32,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 13:53:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:32,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 13:53:32,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 13:53:32,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-02-08 13:53:32,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:32,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:32,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-02-08 13:53:32,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:53:33,723 INFO L124 PetriNetUnfolderBase]: 16773/27799 cut-off events. [2025-02-08 13:53:33,724 INFO L125 PetriNetUnfolderBase]: For 13994/13994 co-relation queries the response was YES. [2025-02-08 13:53:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61646 conditions, 27799 events. 16773/27799 cut-off events. For 13994/13994 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 218602 event pairs, 5625 based on Foata normal form. 336/27187 useless extension candidates. Maximal degree in co-relation 34963. Up to 12366 conditions per place. [2025-02-08 13:53:33,827 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 98 selfloop transitions, 13 changer transitions 0/125 dead transitions. [2025-02-08 13:53:33,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 650 flow [2025-02-08 13:53:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:53:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:53:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2025-02-08 13:53:33,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2025-02-08 13:53:33,833 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 278 flow. Second operand 6 states and 207 transitions. [2025-02-08 13:53:33,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 650 flow [2025-02-08 13:53:33,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 634 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 13:53:33,849 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 294 flow [2025-02-08 13:53:33,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-02-08 13:53:33,851 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2025-02-08 13:53:33,851 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 294 flow [2025-02-08 13:53:33,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:33,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:33,852 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-08 13:53:33,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 13:53:33,852 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:33,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash -606099162, now seen corresponding path program 1 times [2025-02-08 13:53:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:33,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840890728] [2025-02-08 13:53:33,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:33,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:33,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:33,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:33,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:33,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:53:33,920 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:53:33,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:53:33,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:53:33,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:33,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:53:33,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:53:33,948 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-02-08 13:53:33,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2025-02-08 13:53:33,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 13:53:33,949 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:53:33,950 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:53:33,950 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 13:53:33,983 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-02-08 13:53:33,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 218 flow [2025-02-08 13:53:34,107 INFO L124 PetriNetUnfolderBase]: 336/1466 cut-off events. [2025-02-08 13:53:34,108 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2025-02-08 13:53:34,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 1466 events. 336/1466 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 10407 event pairs, 32 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2025-02-08 13:53:34,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 73 transitions, 218 flow [2025-02-08 13:53:34,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 216 flow [2025-02-08 13:53:34,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:53:34,116 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;@1e62b437, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:53:34,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-08 13:53:34,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:53:34,117 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-02-08 13:53:34,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:53:34,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:53:34,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 13:53:34,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-02-08 13:53:34,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:53:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 442956319, now seen corresponding path program 1 times [2025-02-08 13:53:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:53:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555691861] [2025-02-08 13:53:34,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:53:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:53:34,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 13:53:34,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 13:53:34,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:53:34,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:53:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:53:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:53:34,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555691861] [2025-02-08 13:53:34,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555691861] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:53:34,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:53:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:53:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516544365] [2025-02-08 13:53:34,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:53:34,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:53:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:53:34,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:53:34,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:53:34,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 73 [2025-02-08 13:53:34,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 13:53:34,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:53:34,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 73 [2025-02-08 13:53:34,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand