./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:22:40,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:22:40,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:22:40,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:22:40,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:22:40,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:22:40,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:22:40,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:22:40,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:22:40,825 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:22:40,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:22:40,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:22:40,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:22:40,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:22:40,826 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:22:40,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:22:40,827 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:22:40,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:22:40,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:22:40,828 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2025-03-04 15:22:41,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:22:41,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:22:41,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:22:41,075 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:22:41,075 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:22:41,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2025-03-04 15:22:42,298 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113ccce71/2a325bfcc9294db68ef4185e00620890/FLAGe1d6e908d [2025-03-04 15:22:42,584 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:22:42,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2025-03-04 15:22:42,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113ccce71/2a325bfcc9294db68ef4185e00620890/FLAGe1d6e908d [2025-03-04 15:22:42,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113ccce71/2a325bfcc9294db68ef4185e00620890 [2025-03-04 15:22:42,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:22:42,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:22:42,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:22:42,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:22:42,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:22:42,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:22:42" (1/1) ... [2025-03-04 15:22:42,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0df494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:42, skipping insertion in model container [2025-03-04 15:22:42,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:22:42" (1/1) ... [2025-03-04 15:22:42,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:22:43,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:22:43,074 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:22:43,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:22:43,155 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:22:43,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43 WrapperNode [2025-03-04 15:22:43,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:22:43,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:22:43,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:22:43,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:22:43,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,200 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 342 [2025-03-04 15:22:43,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:22:43,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:22:43,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:22:43,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:22:43,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,233 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 75, 5, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 60, 5, 0]. The 7 writes are split as follows [0, 6, 0, 1]. [2025-03-04 15:22:43,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,244 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:22:43,251 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:22:43,251 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:22:43,251 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:22:43,252 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (1/1) ... [2025-03-04 15:22:43,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:22:43,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:43,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:22:43,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 15:22:43,304 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:22:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:22:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 15:22:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:22:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:22:43,306 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:22:43,411 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:22:43,412 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:22:43,712 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L953: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-04 15:22:43,713 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L953-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-04 15:22:43,776 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:22:43,776 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:22:44,072 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:22:44,073 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:22:44,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:22:44 BoogieIcfgContainer [2025-03-04 15:22:44,073 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:22:44,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:22:44,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:22:44,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:22:44,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:22:42" (1/3) ... [2025-03-04 15:22:44,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e05722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:22:44, skipping insertion in model container [2025-03-04 15:22:44,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:22:43" (2/3) ... [2025-03-04 15:22:44,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e05722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:22:44, skipping insertion in model container [2025-03-04 15:22:44,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:22:44" (3/3) ... [2025-03-04 15:22:44,080 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2025-03-04 15:22:44,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:22:44,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_72-funloop_hard_racing.i that has 2 procedures, 126 locations, 1 initial locations, 17 loop locations, and 22 error locations. [2025-03-04 15:22:44,094 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:22:44,165 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 15:22:44,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2025-03-04 15:22:44,266 INFO L124 PetriNetUnfolderBase]: 60/257 cut-off events. [2025-03-04 15:22:44,267 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:22:44,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 257 events. 60/257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1289 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2025-03-04 15:22:44,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2025-03-04 15:22:44,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2025-03-04 15:22:44,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:22:44,300 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;@658d0693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:22:44,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-04 15:22:44,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:22:44,306 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:22:44,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:22:44,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:44,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:22:44,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:44,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:44,312 INFO L85 PathProgramCache]: Analyzing trace with hash 838164, now seen corresponding path program 1 times [2025-03-04 15:22:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:44,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265829755] [2025-03-04 15:22:44,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:44,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:22:44,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:22:44,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:44,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:44,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265829755] [2025-03-04 15:22:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265829755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:44,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:44,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:44,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596461067] [2025-03-04 15:22:44,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:44,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:44,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:44,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:44,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:44,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-04 15:22:44,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:44,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:44,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-04 15:22:44,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:45,166 INFO L124 PetriNetUnfolderBase]: 949/2922 cut-off events. [2025-03-04 15:22:45,167 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:22:45,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4736 conditions, 2922 events. 949/2922 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 23724 event pairs, 800 based on Foata normal form. 442/2977 useless extension candidates. Maximal degree in co-relation 4589. Up to 1807 conditions per place. [2025-03-04 15:22:45,189 INFO L140 encePairwiseOnDemand]: 127/163 looper letters, 69 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-03-04 15:22:45,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 134 transitions, 419 flow [2025-03-04 15:22:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:22:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:22:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2025-03-04 15:22:45,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5414110429447853 [2025-03-04 15:22:45,202 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 353 transitions. [2025-03-04 15:22:45,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 134 transitions, 419 flow [2025-03-04 15:22:45,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:22:45,212 INFO L231 Difference]: Finished difference. Result has 134 places, 134 transitions, 295 flow [2025-03-04 15:22:45,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=134, PETRI_TRANSITIONS=134} [2025-03-04 15:22:45,216 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2025-03-04 15:22:45,218 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 295 flow [2025-03-04 15:22:45,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:45,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:45,219 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:22:45,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:22:45,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:45,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:45,220 INFO L85 PathProgramCache]: Analyzing trace with hash -799385258, now seen corresponding path program 1 times [2025-03-04 15:22:45,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:45,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179789564] [2025-03-04 15:22:45,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:45,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:45,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:22:45,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:22:45,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:45,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179789564] [2025-03-04 15:22:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179789564] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:22:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426822418] [2025-03-04 15:22:45,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:45,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:45,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:45,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:22:45,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:22:45,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:22:45,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:22:45,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:45,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:45,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:22:45,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:22:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:45,508 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:22:45,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426822418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:45,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:22:45,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:22:45,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518789435] [2025-03-04 15:22:45,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:45,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:22:45,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:45,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:22:45,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:22:45,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-04 15:22:45,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:45,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:45,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-04 15:22:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:45,888 INFO L124 PetriNetUnfolderBase]: 949/2921 cut-off events. [2025-03-04 15:22:45,888 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:22:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2921 events. 949/2921 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 23673 event pairs, 800 based on Foata normal form. 1/2535 useless extension candidates. Maximal degree in co-relation 4728. Up to 1802 conditions per place. [2025-03-04 15:22:45,901 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 65 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2025-03-04 15:22:45,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 133 transitions, 433 flow [2025-03-04 15:22:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:22:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:22:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2025-03-04 15:22:45,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4539877300613497 [2025-03-04 15:22:45,906 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 295 flow. Second operand 6 states and 444 transitions. [2025-03-04 15:22:45,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 133 transitions, 433 flow [2025-03-04 15:22:45,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:22:45,909 INFO L231 Difference]: Finished difference. Result has 137 places, 133 transitions, 301 flow [2025-03-04 15:22:45,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=133} [2025-03-04 15:22:45,911 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2025-03-04 15:22:45,911 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 133 transitions, 301 flow [2025-03-04 15:22:45,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:45,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:45,912 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:22:45,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 15:22:46,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:46,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:46,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash 988861455, now seen corresponding path program 1 times [2025-03-04 15:22:46,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:46,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678994138] [2025-03-04 15:22:46,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:46,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:46,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:22:46,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:22:46,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:46,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:22:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678994138] [2025-03-04 15:22:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678994138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:46,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:46,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713788777] [2025-03-04 15:22:46,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:46,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:22:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:46,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:22:46,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:22:46,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-04 15:22:46,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 133 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:46,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:46,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-04 15:22:46,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:46,462 INFO L124 PetriNetUnfolderBase]: 949/2920 cut-off events. [2025-03-04 15:22:46,462 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-04 15:22:46,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2920 events. 949/2920 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 23675 event pairs, 800 based on Foata normal form. 1/2535 useless extension candidates. Maximal degree in co-relation 4724. Up to 1805 conditions per place. [2025-03-04 15:22:46,476 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 66 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2025-03-04 15:22:46,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 437 flow [2025-03-04 15:22:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:22:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:22:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2025-03-04 15:22:46,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5214723926380368 [2025-03-04 15:22:46,477 INFO L175 Difference]: Start difference. First operand has 137 places, 133 transitions, 301 flow. Second operand 3 states and 255 transitions. [2025-03-04 15:22:46,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 437 flow [2025-03-04 15:22:46,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 415 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-04 15:22:46,482 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 283 flow [2025-03-04 15:22:46,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2025-03-04 15:22:46,483 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2025-03-04 15:22:46,483 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 283 flow [2025-03-04 15:22:46,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:46,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:46,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:46,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:22:46,484 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:46,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1106135721, now seen corresponding path program 1 times [2025-03-04 15:22:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:46,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779125521] [2025-03-04 15:22:46,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:46,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:22:46,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:22:46,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:46,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:46,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:46,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779125521] [2025-03-04 15:22:46,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779125521] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:22:46,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478898833] [2025-03-04 15:22:46,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:46,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:46,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:46,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:22:46,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:22:46,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:22:46,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:22:46,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:46,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:46,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:22:46,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:22:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:46,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:22:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:46,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478898833] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:22:46,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:22:46,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-04 15:22:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73827824] [2025-03-04 15:22:46,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:22:46,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:22:46,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:46,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:22:46,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:22:46,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-04 15:22:46,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:46,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:46,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-04 15:22:46,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:47,023 INFO L124 PetriNetUnfolderBase]: 949/2924 cut-off events. [2025-03-04 15:22:47,024 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-04 15:22:47,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 2924 events. 949/2924 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 23677 event pairs, 800 based on Foata normal form. 2/2541 useless extension candidates. Maximal degree in co-relation 4717. Up to 1803 conditions per place. [2025-03-04 15:22:47,055 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2025-03-04 15:22:47,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 444 flow [2025-03-04 15:22:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:22:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:22:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2025-03-04 15:22:47,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44609991235758106 [2025-03-04 15:22:47,058 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 283 flow. Second operand 7 states and 509 transitions. [2025-03-04 15:22:47,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 444 flow [2025-03-04 15:22:47,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 430 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:22:47,064 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 309 flow [2025-03-04 15:22:47,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2025-03-04 15:22:47,065 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2025-03-04 15:22:47,066 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 309 flow [2025-03-04 15:22:47,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:47,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:47,066 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:47,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:22:47,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 15:22:47,269 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:47,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1516395369, now seen corresponding path program 2 times [2025-03-04 15:22:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851397431] [2025-03-04 15:22:47,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:22:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:47,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-04 15:22:47,287 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-04 15:22:47,287 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:22:47,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:22:47,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851397431] [2025-03-04 15:22:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851397431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:47,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:47,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:22:47,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413103015] [2025-03-04 15:22:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:47,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:47,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:47,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:47,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:47,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 163 [2025-03-04 15:22:47,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:47,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:47,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 163 [2025-03-04 15:22:47,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:47,640 INFO L124 PetriNetUnfolderBase]: 927/2557 cut-off events. [2025-03-04 15:22:47,640 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-04 15:22:47,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 2557 events. 927/2557 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 19602 event pairs, 0 based on Foata normal form. 21/2301 useless extension candidates. Maximal degree in co-relation 4319. Up to 1711 conditions per place. [2025-03-04 15:22:47,651 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 114 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2025-03-04 15:22:47,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 176 transitions, 625 flow [2025-03-04 15:22:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:22:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:22:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2025-03-04 15:22:47,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506134969325154 [2025-03-04 15:22:47,654 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 309 flow. Second operand 4 states and 359 transitions. [2025-03-04 15:22:47,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 176 transitions, 625 flow [2025-03-04 15:22:47,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:22:47,658 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 311 flow [2025-03-04 15:22:47,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2025-03-04 15:22:47,659 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2025-03-04 15:22:47,659 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 311 flow [2025-03-04 15:22:47,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:47,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:47,660 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:47,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:22:47,660 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:47,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:47,661 INFO L85 PathProgramCache]: Analyzing trace with hash 469169203, now seen corresponding path program 1 times [2025-03-04 15:22:47,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:47,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486022503] [2025-03-04 15:22:47,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:47,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:22:47,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:22:47,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:47,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:47,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486022503] [2025-03-04 15:22:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486022503] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:22:47,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112817649] [2025-03-04 15:22:47,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:47,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:47,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:22:47,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:22:47,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:22:47,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:22:47,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:47,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:47,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 15:22:47,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:22:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:47,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:22:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112817649] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:22:47,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:22:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-04 15:22:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285195199] [2025-03-04 15:22:47,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:22:47,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 15:22:47,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:47,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 15:22:47,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:22:47,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-04 15:22:47,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 311 flow. Second operand has 18 states, 18 states have (on average 63.22222222222222) internal successors, (1138), 18 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:47,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:47,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-04 15:22:47,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:48,351 INFO L124 PetriNetUnfolderBase]: 946/2800 cut-off events. [2025-03-04 15:22:48,351 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-03-04 15:22:48,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 2800 events. 946/2800 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22159 event pairs, 800 based on Foata normal form. 4/2455 useless extension candidates. Maximal degree in co-relation 4593. Up to 1768 conditions per place. [2025-03-04 15:22:48,361 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2025-03-04 15:22:48,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 521 flow [2025-03-04 15:22:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:22:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:22:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1015 transitions. [2025-03-04 15:22:48,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41513292433537835 [2025-03-04 15:22:48,366 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 311 flow. Second operand 15 states and 1015 transitions. [2025-03-04 15:22:48,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 521 flow [2025-03-04 15:22:48,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:22:48,370 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 402 flow [2025-03-04 15:22:48,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=402, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2025-03-04 15:22:48,372 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2025-03-04 15:22:48,372 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 402 flow [2025-03-04 15:22:48,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.22222222222222) internal successors, (1138), 18 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:48,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:48,373 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:48,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 15:22:48,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:48,574 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:48,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash -797306189, now seen corresponding path program 2 times [2025-03-04 15:22:48,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:48,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432114142] [2025-03-04 15:22:48,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:22:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:48,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-04 15:22:48,596 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 15:22:48,596 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:22:48,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432114142] [2025-03-04 15:22:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432114142] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:22:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100099320] [2025-03-04 15:22:48,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:22:48,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:48,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:48,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:22:48,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:22:48,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-04 15:22:48,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 15:22:48,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:22:48,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:48,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 15:22:48,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:22:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:48,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:22:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100099320] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:22:49,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:22:49,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-04 15:22:49,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490401345] [2025-03-04 15:22:49,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:22:49,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 15:22:49,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:49,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 15:22:49,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-04 15:22:49,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 163 [2025-03-04 15:22:49,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 402 flow. Second operand has 23 states, 23 states have (on average 63.21739130434783) internal successors, (1454), 23 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:49,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:49,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 163 [2025-03-04 15:22:49,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:49,617 INFO L124 PetriNetUnfolderBase]: 946/2809 cut-off events. [2025-03-04 15:22:49,617 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-03-04 15:22:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 2809 events. 946/2809 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22165 event pairs, 800 based on Foata normal form. 3/2463 useless extension candidates. Maximal degree in co-relation 4574. Up to 1768 conditions per place. [2025-03-04 15:22:49,635 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 66 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2025-03-04 15:22:49,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 630 flow [2025-03-04 15:22:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 15:22:49,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-04 15:22:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1392 transitions. [2025-03-04 15:22:49,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.406660823838738 [2025-03-04 15:22:49,660 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 402 flow. Second operand 21 states and 1392 transitions. [2025-03-04 15:22:49,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 630 flow [2025-03-04 15:22:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 620 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-04 15:22:49,663 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 503 flow [2025-03-04 15:22:49,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=503, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2025-03-04 15:22:49,664 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2025-03-04 15:22:49,664 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 503 flow [2025-03-04 15:22:49,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 63.21739130434783) internal successors, (1454), 23 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:49,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:49,665 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:22:49,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:22:49,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:49,865 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-04 15:22:49,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:49,866 INFO L85 PathProgramCache]: Analyzing trace with hash 915200753, now seen corresponding path program 3 times [2025-03-04 15:22:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:49,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770901810] [2025-03-04 15:22:49,866 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:22:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:49,876 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-03-04 15:22:49,920 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 15:22:49,920 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-04 15:22:49,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:22:49,921 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:22:49,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 15:22:49,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 15:22:49,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:49,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:22:49,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:22:49,955 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:22:49,956 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-03-04 15:22:49,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-03-04 15:22:49,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-03-04 15:22:49,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 15:22:49,959 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-03-04 15:22:49,960 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:22:49,960 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 15:22:49,997 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:22:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 214 transitions, 444 flow [2025-03-04 15:22:50,024 INFO L124 PetriNetUnfolderBase]: 97/421 cut-off events. [2025-03-04 15:22:50,024 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 15:22:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 421 events. 97/421 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2358 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 259. Up to 12 conditions per place. [2025-03-04 15:22:50,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 214 transitions, 444 flow [2025-03-04 15:22:50,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 214 transitions, 444 flow [2025-03-04 15:22:50,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:22:50,032 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;@658d0693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:22:50,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-03-04 15:22:50,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:22:50,034 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:22:50,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:22:50,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:50,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:22:50,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:22:50,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1050666, now seen corresponding path program 1 times [2025-03-04 15:22:50,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:50,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762963450] [2025-03-04 15:22:50,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:50,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:22:50,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:22:50,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:50,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:50,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762963450] [2025-03-04 15:22:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762963450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:50,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:22:50,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:22:50,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837332616] [2025-03-04 15:22:50,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:50,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:22:50,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:50,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:22:50,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:22:50,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-04 15:22:50,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 214 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:50,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:50,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-04 15:22:50,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:54,350 INFO L124 PetriNetUnfolderBase]: 39869/85575 cut-off events. [2025-03-04 15:22:54,351 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-04 15:22:54,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143697 conditions, 85575 events. 39869/85575 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 2462. Compared 978668 event pairs, 34920 based on Foata normal form. 14318/88694 useless extension candidates. Maximal degree in co-relation 107164. Up to 58008 conditions per place. [2025-03-04 15:22:54,765 INFO L140 encePairwiseOnDemand]: 168/214 looper letters, 93 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2025-03-04 15:22:54,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 176 transitions, 560 flow [2025-03-04 15:22:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:22:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:22:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2025-03-04 15:22:54,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5362149532710281 [2025-03-04 15:22:54,767 INFO L175 Difference]: Start difference. First operand has 169 places, 214 transitions, 444 flow. Second operand 4 states and 459 transitions. [2025-03-04 15:22:54,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 176 transitions, 560 flow [2025-03-04 15:22:54,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 176 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:22:54,772 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 388 flow [2025-03-04 15:22:54,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2025-03-04 15:22:54,773 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 5 predicate places. [2025-03-04 15:22:54,774 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 388 flow [2025-03-04 15:22:54,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:54,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:22:54,774 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:22:54,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:22:54,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:22:54,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:22:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1236507030, now seen corresponding path program 1 times [2025-03-04 15:22:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:22:54,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094270806] [2025-03-04 15:22:54,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:22:54,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:22:54,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:22:54,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:54,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:54,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:22:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094270806] [2025-03-04 15:22:54,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094270806] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:22:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95789855] [2025-03-04 15:22:54,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:22:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:22:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:22:54,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:22:54,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:22:54,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:22:54,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:22:54,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:22:54,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:22:54,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:22:54,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:22:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:22:54,924 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:22:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95789855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:22:54,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:22:54,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:22:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108192270] [2025-03-04 15:22:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:22:54,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:22:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:22:54,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:22:54,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:22:54,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-04 15:22:54,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:22:54,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:22:54,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-04 15:22:54,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:22:59,446 INFO L124 PetriNetUnfolderBase]: 39869/85574 cut-off events. [2025-03-04 15:22:59,446 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2025-03-04 15:22:59,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143707 conditions, 85574 events. 39869/85574 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 978666 event pairs, 34920 based on Foata normal form. 1/74376 useless extension candidates. Maximal degree in co-relation 143688. Up to 58003 conditions per place. [2025-03-04 15:23:00,136 INFO L140 encePairwiseOnDemand]: 209/214 looper letters, 89 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2025-03-04 15:23:00,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 175 transitions, 574 flow [2025-03-04 15:23:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:23:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:23:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2025-03-04 15:23:00,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4485981308411215 [2025-03-04 15:23:00,138 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 388 flow. Second operand 6 states and 576 transitions. [2025-03-04 15:23:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 175 transitions, 574 flow [2025-03-04 15:23:00,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 175 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:23:00,141 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 394 flow [2025-03-04 15:23:00,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2025-03-04 15:23:00,142 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 8 predicate places. [2025-03-04 15:23:00,142 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 394 flow [2025-03-04 15:23:00,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:00,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:23:00,142 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:23:00,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 15:23:00,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-04 15:23:00,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:23:00,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:23:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash -322986843, now seen corresponding path program 1 times [2025-03-04 15:23:00,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:23:00,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432070568] [2025-03-04 15:23:00,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:23:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:23:00,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:23:00,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:23:00,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:23:00,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:23:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:23:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:23:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432070568] [2025-03-04 15:23:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432070568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:23:00,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:23:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:23:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275735456] [2025-03-04 15:23:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:23:00,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:23:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:23:00,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:23:00,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:23:00,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-04 15:23:00,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:00,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:23:00,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-04 15:23:00,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:23:04,856 INFO L124 PetriNetUnfolderBase]: 39869/85573 cut-off events. [2025-03-04 15:23:04,856 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-03-04 15:23:05,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143709 conditions, 85573 events. 39869/85573 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 978632 event pairs, 34920 based on Foata normal form. 1/74376 useless extension candidates. Maximal degree in co-relation 143684. Up to 58006 conditions per place. [2025-03-04 15:23:05,494 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 90 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2025-03-04 15:23:05,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 578 flow [2025-03-04 15:23:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:23:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:23:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2025-03-04 15:23:05,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5186915887850467 [2025-03-04 15:23:05,496 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 394 flow. Second operand 3 states and 333 transitions. [2025-03-04 15:23:05,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 578 flow [2025-03-04 15:23:05,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 556 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-04 15:23:05,498 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 376 flow [2025-03-04 15:23:05,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2025-03-04 15:23:05,499 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 3 predicate places. [2025-03-04 15:23:05,499 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 376 flow [2025-03-04 15:23:05,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:05,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:23:05,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:23:05,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 15:23:05,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:23:05,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:23:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1154606992, now seen corresponding path program 1 times [2025-03-04 15:23:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:23:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805531887] [2025-03-04 15:23:05,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:23:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:23:05,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:23:05,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:23:05,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:23:05,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:23:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:23:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:23:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805531887] [2025-03-04 15:23:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805531887] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:23:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105738925] [2025-03-04 15:23:05,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:23:05,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:23:05,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:23:05,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:23:05,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:23:05,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:23:05,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:23:05,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:23:05,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:23:05,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:23:05,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:23:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:23:05,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:23:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:23:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105738925] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:23:05,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:23:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-04 15:23:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564001119] [2025-03-04 15:23:05,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:23:05,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:23:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:23:05,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:23:05,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:23:05,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-04 15:23:05,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 376 flow. Second operand has 10 states, 10 states have (on average 81.3) internal successors, (813), 10 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:05,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:23:05,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-04 15:23:05,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:23:10,045 INFO L124 PetriNetUnfolderBase]: 39869/85577 cut-off events. [2025-03-04 15:23:10,045 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-04 15:23:10,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143712 conditions, 85577 events. 39869/85577 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 978569 event pairs, 34920 based on Foata normal form. 2/74382 useless extension candidates. Maximal degree in co-relation 143677. Up to 58004 conditions per place. [2025-03-04 15:23:10,414 INFO L140 encePairwiseOnDemand]: 210/214 looper letters, 90 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2025-03-04 15:23:10,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 177 transitions, 585 flow [2025-03-04 15:23:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:23:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:23:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2025-03-04 15:23:10,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43991989319092123 [2025-03-04 15:23:10,416 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 376 flow. Second operand 7 states and 659 transitions. [2025-03-04 15:23:10,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 177 transitions, 585 flow [2025-03-04 15:23:10,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 177 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:23:10,419 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 402 flow [2025-03-04 15:23:10,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2025-03-04 15:23:10,420 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2025-03-04 15:23:10,420 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 402 flow [2025-03-04 15:23:10,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.3) internal successors, (813), 10 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:10,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:23:10,421 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-04 15:23:10,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 15:23:10,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:23:10,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:23:10,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:23:10,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1024274672, now seen corresponding path program 2 times [2025-03-04 15:23:10,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:23:10,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042395273] [2025-03-04 15:23:10,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:23:10,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:23:10,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-04 15:23:10,630 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-04 15:23:10,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:23:10,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:23:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:23:10,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:23:10,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042395273] [2025-03-04 15:23:10,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042395273] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:23:10,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:23:10,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:23:10,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829150979] [2025-03-04 15:23:10,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:23:10,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:23:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:23:10,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:23:10,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:23:10,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 214 [2025-03-04 15:23:10,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:10,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:23:10,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 214 [2025-03-04 15:23:10,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:23:15,275 INFO L124 PetriNetUnfolderBase]: 41693/85653 cut-off events. [2025-03-04 15:23:15,275 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-03-04 15:23:15,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146789 conditions, 85653 events. 41693/85653 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 944194 event pairs, 18140 based on Foata normal form. 21/74906 useless extension candidates. Maximal degree in co-relation 146749. Up to 60939 conditions per place. [2025-03-04 15:23:15,703 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 142 selfloop transitions, 3 changer transitions 0/222 dead transitions. [2025-03-04 15:23:15,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 222 transitions, 782 flow [2025-03-04 15:23:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:23:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:23:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2025-03-04 15:23:15,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5362149532710281 [2025-03-04 15:23:15,704 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 402 flow. Second operand 4 states and 459 transitions. [2025-03-04 15:23:15,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 222 transitions, 782 flow [2025-03-04 15:23:15,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 222 transitions, 778 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:23:15,707 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 422 flow [2025-03-04 15:23:15,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=422, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2025-03-04 15:23:15,708 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 12 predicate places. [2025-03-04 15:23:15,708 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 422 flow [2025-03-04 15:23:15,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:15,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:23:15,708 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:23:15,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:23:15,708 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:23:15,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:23:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1670873548, now seen corresponding path program 1 times [2025-03-04 15:23:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:23:15,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690378998] [2025-03-04 15:23:15,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:23:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:23:15,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:23:15,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:23:15,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:23:15,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:23:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:23:15,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:23:15,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690378998] [2025-03-04 15:23:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690378998] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:23:15,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079082504] [2025-03-04 15:23:15,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:23:15,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:23:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:23:15,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:23:15,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:23:15,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:23:15,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:23:15,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:23:15,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:23:15,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 15:23:15,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:23:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:23:15,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:23:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:23:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079082504] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:23:15,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:23:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-04 15:23:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195096710] [2025-03-04 15:23:15,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:23:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 15:23:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:23:15,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 15:23:15,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:23:15,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 214 [2025-03-04 15:23:15,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 422 flow. Second operand has 18 states, 18 states have (on average 81.27777777777777) internal successors, (1463), 18 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:23:15,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:23:15,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 214 [2025-03-04 15:23:15,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand