./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:45:51,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:45:51,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:45:51,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:45:51,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:45:51,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:45:51,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:45:51,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:45:51,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:45:51,814 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:45:51,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:45:51,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:45:51,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:45:51,815 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:45:51,816 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:51,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:45:51,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:45:51,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:45:51,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:45:51,817 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2025-02-06 18:45:52,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:45:52,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:45:52,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:45:52,058 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:45:52,059 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:45:52,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2025-02-06 18:45:53,269 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eda9a9f95/0d8160710da74147a01ac869b0a26378/FLAG6b204e50d [2025-02-06 18:45:53,553 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:45:53,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2025-02-06 18:45:53,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eda9a9f95/0d8160710da74147a01ac869b0a26378/FLAG6b204e50d [2025-02-06 18:45:53,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eda9a9f95/0d8160710da74147a01ac869b0a26378 [2025-02-06 18:45:53,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:45:53,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:45:53,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:53,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:45:53,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:45:53,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:53,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2044b26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53, skipping insertion in model container [2025-02-06 18:45:53,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:53,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:45:53,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:53,924 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:45:53,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:53,996 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:45:53,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53 WrapperNode [2025-02-06 18:45:53,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:53,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:53,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:45:53,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:45:54,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,037 INFO L138 Inliner]: procedures = 272, calls = 96, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 274 [2025-02-06 18:45:54,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:54,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:45:54,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:45:54,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:45:54,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,064 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 2, 70]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 5 writes are split as follows [0, 0, 1, 4]. [2025-02-06 18:45:54,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:45:54,075 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:45:54,075 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:45:54,075 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:45:54,076 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (1/1) ... [2025-02-06 18:45:54,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:54,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:45:54,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:45:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 18:45:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:45:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:45:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:45:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:45:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:45:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:45:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:45:54,126 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:45:54,236 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:45:54,237 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:45:54,487 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 18:45:54,487 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 18:45:54,544 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:45:54,544 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:45:54,839 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:45:54,840 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:45:54,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:54 BoogieIcfgContainer [2025-02-06 18:45:54,840 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:45:54,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:45:54,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:45:54,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:45:54,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:45:53" (1/3) ... [2025-02-06 18:45:54,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60804b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:54, skipping insertion in model container [2025-02-06 18:45:54,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:53" (2/3) ... [2025-02-06 18:45:54,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60804b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:54, skipping insertion in model container [2025-02-06 18:45:54,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:54" (3/3) ... [2025-02-06 18:45:54,847 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2025-02-06 18:45:54,858 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:45:54,860 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_70-funloop_racefree.i that has 2 procedures, 103 locations, 1 initial locations, 15 loop locations, and 18 error locations. [2025-02-06 18:45:54,860 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:45:54,911 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 18:45:54,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 129 transitions, 265 flow [2025-02-06 18:45:54,993 INFO L124 PetriNetUnfolderBase]: 38/185 cut-off events. [2025-02-06 18:45:54,995 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 185 events. 38/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 802 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 114. Up to 8 conditions per place. [2025-02-06 18:45:54,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 129 transitions, 265 flow [2025-02-06 18:45:55,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 128 transitions, 263 flow [2025-02-06 18:45:55,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:55,017 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;@b9331a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:55,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-06 18:45:55,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:55,023 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:45:55,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:55,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:55,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:45:55,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:55,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash 685450, now seen corresponding path program 1 times [2025-02-06 18:45:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:55,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421373727] [2025-02-06 18:45:55,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:55,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:45:55,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:45:55,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:55,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:55,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:55,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421373727] [2025-02-06 18:45:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421373727] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738892048] [2025-02-06 18:45:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:55,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:55,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:55,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:55,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-06 18:45:55,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 128 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:55,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:55,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-06 18:45:55,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:55,742 INFO L124 PetriNetUnfolderBase]: 575/1882 cut-off events. [2025-02-06 18:45:55,742 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:55,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 1882 events. 575/1882 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13550 event pairs, 480 based on Foata normal form. 428/2037 useless extension candidates. Maximal degree in co-relation 2886. Up to 1100 conditions per place. [2025-02-06 18:45:55,755 INFO L140 encePairwiseOnDemand]: 103/129 looper letters, 53 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2025-02-06 18:45:55,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 339 flow [2025-02-06 18:45:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2025-02-06 18:45:55,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5717054263565892 [2025-02-06 18:45:55,779 INFO L175 Difference]: Start difference. First operand has 106 places, 128 transitions, 263 flow. Second operand 4 states and 295 transitions. [2025-02-06 18:45:55,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 339 flow [2025-02-06 18:45:55,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:55,789 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 247 flow [2025-02-06 18:45:55,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2025-02-06 18:45:55,794 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2025-02-06 18:45:55,794 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 247 flow [2025-02-06 18:45:55,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:55,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:55,794 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:45:55,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:45:55,795 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:55,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1053985038, now seen corresponding path program 1 times [2025-02-06 18:45:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:55,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951471768] [2025-02-06 18:45:55,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:55,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:55,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:45:55,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:45:55,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:55,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951471768] [2025-02-06 18:45:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951471768] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352049167] [2025-02-06 18:45:55,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:55,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:55,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:55,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:55,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:45:55,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:45:55,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:45:55,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:55,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:55,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:45:55,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:56,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:45:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352049167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:45:56,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:45:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322084015] [2025-02-06 18:45:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:56,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:45:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:56,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:45:56,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:45:56,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-06 18:45:56,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:56,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-06 18:45:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:56,343 INFO L124 PetriNetUnfolderBase]: 575/1881 cut-off events. [2025-02-06 18:45:56,343 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:45:56,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 1881 events. 575/1881 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13522 event pairs, 480 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 2981. Up to 1095 conditions per place. [2025-02-06 18:45:56,354 INFO L140 encePairwiseOnDemand]: 124/129 looper letters, 49 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2025-02-06 18:45:56,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 353 flow [2025-02-06 18:45:56,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:45:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:45:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2025-02-06 18:45:56,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4909560723514212 [2025-02-06 18:45:56,356 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 247 flow. Second operand 6 states and 380 transitions. [2025-02-06 18:45:56,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 353 flow [2025-02-06 18:45:56,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 109 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:45:56,362 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 253 flow [2025-02-06 18:45:56,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2025-02-06 18:45:56,364 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 8 predicate places. [2025-02-06 18:45:56,364 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 253 flow [2025-02-06 18:45:56,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:56,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:56,364 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:45:56,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:45:56,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:56,565 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:56,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:56,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1686202805, now seen corresponding path program 1 times [2025-02-06 18:45:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:56,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098130919] [2025-02-06 18:45:56,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:56,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:45:56,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:45:56,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:56,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:45:56,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:56,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098130919] [2025-02-06 18:45:56,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098130919] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:56,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:56,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:56,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173313063] [2025-02-06 18:45:56,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:56,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:45:56,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:56,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:45:56,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:45:56,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-06 18:45:56,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:56,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:56,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-06 18:45:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:56,867 INFO L124 PetriNetUnfolderBase]: 575/1880 cut-off events. [2025-02-06 18:45:56,867 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-06 18:45:56,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 1880 events. 575/1880 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13533 event pairs, 480 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 2977. Up to 1098 conditions per place. [2025-02-06 18:45:56,877 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 50 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-02-06 18:45:56,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 357 flow [2025-02-06 18:45:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:45:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:45:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2025-02-06 18:45:56,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 18:45:56,879 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 253 flow. Second operand 3 states and 215 transitions. [2025-02-06 18:45:56,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 357 flow [2025-02-06 18:45:56,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 335 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:45:56,882 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 235 flow [2025-02-06 18:45:56,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2025-02-06 18:45:56,883 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 3 predicate places. [2025-02-06 18:45:56,883 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 235 flow [2025-02-06 18:45:56,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:56,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:56,883 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:56,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:45:56,883 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:56,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1240804093, now seen corresponding path program 1 times [2025-02-06 18:45:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872544253] [2025-02-06 18:45:56,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:56,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:45:56,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:45:56,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:56,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872544253] [2025-02-06 18:45:56,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872544253] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227357021] [2025-02-06 18:45:56,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:56,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:56,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:45:57,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:45:57,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:45:57,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:57,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:57,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:45:57,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:57,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:45:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227357021] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:45:57,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:45:57,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:45:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351280984] [2025-02-06 18:45:57,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:45:57,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:45:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:57,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:45:57,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:45:57,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-06 18:45:57,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 235 flow. Second operand has 10 states, 10 states have (on average 55.3) internal successors, (553), 10 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:57,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:57,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-06 18:45:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:57,366 INFO L124 PetriNetUnfolderBase]: 575/1884 cut-off events. [2025-02-06 18:45:57,366 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-06 18:45:57,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3004 conditions, 1884 events. 575/1884 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13549 event pairs, 480 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 2970. Up to 1096 conditions per place. [2025-02-06 18:45:57,375 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 50 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2025-02-06 18:45:57,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 364 flow [2025-02-06 18:45:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:45:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:45:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 437 transitions. [2025-02-06 18:45:57,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4839424141749723 [2025-02-06 18:45:57,378 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 235 flow. Second operand 7 states and 437 transitions. [2025-02-06 18:45:57,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 364 flow [2025-02-06 18:45:57,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:45:57,382 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 261 flow [2025-02-06 18:45:57,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2025-02-06 18:45:57,384 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 9 predicate places. [2025-02-06 18:45:57,384 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 261 flow [2025-02-06 18:45:57,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 55.3) internal successors, (553), 10 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:57,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:57,385 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:57,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:45:57,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:57,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:57,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 639603197, now seen corresponding path program 2 times [2025-02-06 18:45:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52562819] [2025-02-06 18:45:57,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:45:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:57,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 18:45:57,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-06 18:45:57,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:45:57,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:45:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52562819] [2025-02-06 18:45:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52562819] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:45:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758177849] [2025-02-06 18:45:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:57,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:57,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:57,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:57,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2025-02-06 18:45:57,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:57,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:57,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2025-02-06 18:45:57,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:57,898 INFO L124 PetriNetUnfolderBase]: 594/1795 cut-off events. [2025-02-06 18:45:57,899 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 18:45:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 1795 events. 594/1795 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 12634 event pairs, 138 based on Foata normal form. 21/1580 useless extension candidates. Maximal degree in co-relation 2915. Up to 1069 conditions per place. [2025-02-06 18:45:57,907 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 98 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2025-02-06 18:45:57,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 152 transitions, 545 flow [2025-02-06 18:45:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2025-02-06 18:45:57,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6027131782945736 [2025-02-06 18:45:57,908 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 261 flow. Second operand 4 states and 311 transitions. [2025-02-06 18:45:57,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 152 transitions, 545 flow [2025-02-06 18:45:57,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 152 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:45:57,911 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 263 flow [2025-02-06 18:45:57,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2025-02-06 18:45:57,912 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 9 predicate places. [2025-02-06 18:45:57,912 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 263 flow [2025-02-06 18:45:57,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:57,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:57,913 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:57,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:45:57,913 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:57,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1944522873, now seen corresponding path program 1 times [2025-02-06 18:45:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923076419] [2025-02-06 18:45:57,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:57,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:45:57,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:45:57,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:57,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:58,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:58,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923076419] [2025-02-06 18:45:58,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923076419] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:58,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976609233] [2025-02-06 18:45:58,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:58,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:58,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:58,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:58,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:45:58,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:45:58,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:45:58,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:58,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:58,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:45:58,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:58,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:45:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:58,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976609233] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:45:58,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:45:58,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:45:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775527169] [2025-02-06 18:45:58,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:45:58,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:45:58,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:58,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:45:58,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:45:58,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-06 18:45:58,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 263 flow. Second operand has 18 states, 18 states have (on average 55.22222222222222) internal successors, (994), 18 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:58,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:58,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-06 18:45:58,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:58,511 INFO L124 PetriNetUnfolderBase]: 573/1843 cut-off events. [2025-02-06 18:45:58,512 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-02-06 18:45:58,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 1843 events. 573/1843 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13034 event pairs, 480 based on Foata normal form. 4/1602 useless extension candidates. Maximal degree in co-relation 2941. Up to 1073 conditions per place. [2025-02-06 18:45:58,520 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 50 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2025-02-06 18:45:58,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 441 flow [2025-02-06 18:45:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:45:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:45:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 879 transitions. [2025-02-06 18:45:58,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4542635658914729 [2025-02-06 18:45:58,523 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 263 flow. Second operand 15 states and 879 transitions. [2025-02-06 18:45:58,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 441 flow [2025-02-06 18:45:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 117 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:45:58,526 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 354 flow [2025-02-06 18:45:58,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=354, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2025-02-06 18:45:58,526 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 24 predicate places. [2025-02-06 18:45:58,526 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 354 flow [2025-02-06 18:45:58,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.22222222222222) internal successors, (994), 18 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:58,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:58,527 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:58,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:45:58,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:58,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:58,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash -296009095, now seen corresponding path program 2 times [2025-02-06 18:45:58,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634473987] [2025-02-06 18:45:58,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:45:58,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:58,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:45:58,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:45:58,757 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:45:58,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634473987] [2025-02-06 18:45:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634473987] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533212201] [2025-02-06 18:45:59,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:45:59,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:59,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:59,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:59,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:45:59,067 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:45:59,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:45:59,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:45:59,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:59,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 18:45:59,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:59,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:45:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533212201] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:45:59,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:45:59,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-06 18:45:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572687908] [2025-02-06 18:45:59,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:45:59,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:45:59,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:59,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:45:59,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:45:59,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-06 18:45:59,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 354 flow. Second operand has 23 states, 23 states have (on average 55.21739130434783) internal successors, (1270), 23 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:59,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:59,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-06 18:45:59,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:59,726 INFO L124 PetriNetUnfolderBase]: 573/1852 cut-off events. [2025-02-06 18:45:59,726 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-02-06 18:45:59,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 1852 events. 573/1852 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13012 event pairs, 480 based on Foata normal form. 3/1610 useless extension candidates. Maximal degree in co-relation 2922. Up to 1073 conditions per place. [2025-02-06 18:45:59,733 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 50 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2025-02-06 18:45:59,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 123 transitions, 550 flow [2025-02-06 18:45:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:45:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:45:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1208 transitions. [2025-02-06 18:45:59,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4459210040605389 [2025-02-06 18:45:59,736 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 354 flow. Second operand 21 states and 1208 transitions. [2025-02-06 18:45:59,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 123 transitions, 550 flow [2025-02-06 18:45:59,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 123 transitions, 540 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:45:59,739 INFO L231 Difference]: Finished difference. Result has 149 places, 123 transitions, 455 flow [2025-02-06 18:45:59,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=455, PETRI_PLACES=149, PETRI_TRANSITIONS=123} [2025-02-06 18:45:59,740 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 43 predicate places. [2025-02-06 18:45:59,740 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 123 transitions, 455 flow [2025-02-06 18:45:59,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.21739130434783) internal successors, (1270), 23 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:59,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:59,741 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:59,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:45:59,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-06 18:45:59,941 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:45:59,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 577767185, now seen corresponding path program 3 times [2025-02-06 18:45:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639158362] [2025-02-06 18:45:59,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:45:59,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:59,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-02-06 18:45:59,989 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:45:59,990 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 18:45:59,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:59,990 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:45:59,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 18:46:00,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:46:00,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:00,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:00,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:46:00,026 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:46:00,026 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-02-06 18:46:00,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-02-06 18:46:00,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-02-06 18:46:00,030 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-02-06 18:46:00,030 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-02-06 18:46:00,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-02-06 18:46:00,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:46:00,032 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-02-06 18:46:00,033 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:46:00,033 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:46:00,057 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:46:00,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 184 transitions, 384 flow [2025-02-06 18:46:00,074 INFO L124 PetriNetUnfolderBase]: 64/315 cut-off events. [2025-02-06 18:46:00,074 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 18:46:00,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 315 events. 64/315 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1610 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 187. Up to 12 conditions per place. [2025-02-06 18:46:00,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 184 transitions, 384 flow [2025-02-06 18:46:00,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 184 transitions, 384 flow [2025-02-06 18:46:00,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:46:00,080 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;@b9331a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:46:00,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-02-06 18:46:00,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:46:00,081 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:46:00,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:46:00,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:00,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:46:00,081 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:00,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 868162, now seen corresponding path program 1 times [2025-02-06 18:46:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747976612] [2025-02-06 18:46:00,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:00,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:46:00,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:46:00,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:00,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:00,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:00,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747976612] [2025-02-06 18:46:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747976612] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:00,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535405419] [2025-02-06 18:46:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:00,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:00,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:00,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:00,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-06 18:46:00,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 184 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:00,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:00,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-06 18:46:00,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:03,188 INFO L124 PetriNetUnfolderBase]: 24270/54468 cut-off events. [2025-02-06 18:46:03,188 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2025-02-06 18:46:03,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89955 conditions, 54468 events. 24270/54468 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 600576 event pairs, 21160 based on Foata normal form. 14147/60828 useless extension candidates. Maximal degree in co-relation 66825. Up to 35373 conditions per place. [2025-02-06 18:46:03,430 INFO L140 encePairwiseOnDemand]: 148/184 looper letters, 77 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2025-02-06 18:46:03,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 156 transitions, 488 flow [2025-02-06 18:46:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2025-02-06 18:46:03,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5665760869565217 [2025-02-06 18:46:03,432 INFO L175 Difference]: Start difference. First operand has 150 places, 184 transitions, 384 flow. Second operand 4 states and 417 transitions. [2025-02-06 18:46:03,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 156 transitions, 488 flow [2025-02-06 18:46:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 156 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:46:03,434 INFO L231 Difference]: Finished difference. Result has 155 places, 156 transitions, 348 flow [2025-02-06 18:46:03,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=155, PETRI_TRANSITIONS=156} [2025-02-06 18:46:03,435 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 5 predicate places. [2025-02-06 18:46:03,435 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 348 flow [2025-02-06 18:46:03,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:03,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:03,436 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:46:03,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:46:03,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:03,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash 94403570, now seen corresponding path program 1 times [2025-02-06 18:46:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367902947] [2025-02-06 18:46:03,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:03,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:46:03,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:46:03,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:03,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:03,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:03,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367902947] [2025-02-06 18:46:03,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367902947] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52666145] [2025-02-06 18:46:03,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:03,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:03,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:03,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:03,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:46:03,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:46:03,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:46:03,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:03,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:03,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:46:03,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:03,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:46:03,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52666145] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:03,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:46:03,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:46:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753382164] [2025-02-06 18:46:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:03,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:46:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:03,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:46:03,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:46:03,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-06 18:46:03,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 156 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:03,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:03,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-06 18:46:03,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:06,502 INFO L124 PetriNetUnfolderBase]: 24270/54467 cut-off events. [2025-02-06 18:46:06,502 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2025-02-06 18:46:06,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89965 conditions, 54467 events. 24270/54467 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 600387 event pairs, 21160 based on Foata normal form. 1/46681 useless extension candidates. Maximal degree in co-relation 89946. Up to 35368 conditions per place. [2025-02-06 18:46:06,774 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 73 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2025-02-06 18:46:06,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 155 transitions, 502 flow [2025-02-06 18:46:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:46:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:46:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2025-02-06 18:46:06,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2025-02-06 18:46:06,776 INFO L175 Difference]: Start difference. First operand has 155 places, 156 transitions, 348 flow. Second operand 6 states and 536 transitions. [2025-02-06 18:46:06,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 155 transitions, 502 flow [2025-02-06 18:46:06,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:46:06,779 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 354 flow [2025-02-06 18:46:06,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2025-02-06 18:46:06,780 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 8 predicate places. [2025-02-06 18:46:06,780 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 354 flow [2025-02-06 18:46:06,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:06,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:06,780 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:46:06,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:46:06,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 18:46:06,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:06,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1368455827, now seen corresponding path program 1 times [2025-02-06 18:46:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:06,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669840638] [2025-02-06 18:46:06,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:06,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:46:06,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:46:06,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:06,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:46:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669840638] [2025-02-06 18:46:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669840638] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:07,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934775836] [2025-02-06 18:46:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:07,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:46:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:07,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:46:07,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:46:07,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-06 18:46:07,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:07,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:07,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-06 18:46:07,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:09,565 INFO L124 PetriNetUnfolderBase]: 24270/54466 cut-off events. [2025-02-06 18:46:09,565 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2025-02-06 18:46:09,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89967 conditions, 54466 events. 24270/54466 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 600463 event pairs, 21160 based on Foata normal form. 1/46681 useless extension candidates. Maximal degree in co-relation 89942. Up to 35371 conditions per place. [2025-02-06 18:46:09,857 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 74 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2025-02-06 18:46:09,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 506 flow [2025-02-06 18:46:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:46:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:46:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2025-02-06 18:46:09,858 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.552536231884058 [2025-02-06 18:46:09,858 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 354 flow. Second operand 3 states and 305 transitions. [2025-02-06 18:46:09,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 506 flow [2025-02-06 18:46:09,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 154 transitions, 484 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:46:09,861 INFO L231 Difference]: Finished difference. Result has 153 places, 154 transitions, 336 flow [2025-02-06 18:46:09,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=153, PETRI_TRANSITIONS=154} [2025-02-06 18:46:09,861 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 3 predicate places. [2025-02-06 18:46:09,861 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 154 transitions, 336 flow [2025-02-06 18:46:09,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:09,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:09,862 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:09,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:46:09,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:09,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash -823421270, now seen corresponding path program 1 times [2025-02-06 18:46:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23503687] [2025-02-06 18:46:09,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:09,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:09,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:46:09,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:46:09,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:09,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:09,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23503687] [2025-02-06 18:46:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23503687] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597291751] [2025-02-06 18:46:09,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:09,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:09,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:09,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:09,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:46:09,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:46:09,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:46:09,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:09,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:09,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:46:09,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:09,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:46:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:10,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597291751] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:46:10,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:46:10,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:46:10,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267815962] [2025-02-06 18:46:10,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:46:10,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:46:10,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:10,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:46:10,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:46:10,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-06 18:46:10,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 154 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:10,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:10,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-06 18:46:10,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:12,887 INFO L124 PetriNetUnfolderBase]: 24270/54470 cut-off events. [2025-02-06 18:46:12,887 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2025-02-06 18:46:12,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89970 conditions, 54470 events. 24270/54470 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 600526 event pairs, 21160 based on Foata normal form. 2/46687 useless extension candidates. Maximal degree in co-relation 89935. Up to 35369 conditions per place. [2025-02-06 18:46:13,112 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 74 selfloop transitions, 7 changer transitions 0/157 dead transitions. [2025-02-06 18:46:13,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 513 flow [2025-02-06 18:46:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:46:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:46:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2025-02-06 18:46:13,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47748447204968947 [2025-02-06 18:46:13,114 INFO L175 Difference]: Start difference. First operand has 153 places, 154 transitions, 336 flow. Second operand 7 states and 615 transitions. [2025-02-06 18:46:13,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 513 flow [2025-02-06 18:46:13,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:46:13,116 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 362 flow [2025-02-06 18:46:13,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=159, PETRI_TRANSITIONS=157} [2025-02-06 18:46:13,117 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 9 predicate places. [2025-02-06 18:46:13,117 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 362 flow [2025-02-06 18:46:13,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:13,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:13,117 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:13,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:46:13,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 18:46:13,317 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:13,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:13,318 INFO L85 PathProgramCache]: Analyzing trace with hash 658020522, now seen corresponding path program 2 times [2025-02-06 18:46:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:13,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830551908] [2025-02-06 18:46:13,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:46:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:13,324 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 18:46:13,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-06 18:46:13,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:46:13,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:46:13,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830551908] [2025-02-06 18:46:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830551908] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:13,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:13,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:46:13,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599283338] [2025-02-06 18:46:13,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:13,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:13,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:13,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:13,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2025-02-06 18:46:13,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 157 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:13,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:13,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2025-02-06 18:46:13,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:16,495 INFO L124 PetriNetUnfolderBase]: 26448/56648 cut-off events. [2025-02-06 18:46:16,495 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2025-02-06 18:46:16,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95541 conditions, 56648 events. 26448/56648 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 609582 event pairs, 11420 based on Foata normal form. 21/48972 useless extension candidates. Maximal degree in co-relation 95501. Up to 38696 conditions per place. [2025-02-06 18:46:16,765 INFO L140 encePairwiseOnDemand]: 178/184 looper letters, 126 selfloop transitions, 3 changer transitions 0/202 dead transitions. [2025-02-06 18:46:16,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 202 transitions, 710 flow [2025-02-06 18:46:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2025-02-06 18:46:16,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5801630434782609 [2025-02-06 18:46:16,767 INFO L175 Difference]: Start difference. First operand has 159 places, 157 transitions, 362 flow. Second operand 4 states and 427 transitions. [2025-02-06 18:46:16,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 202 transitions, 710 flow [2025-02-06 18:46:16,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 202 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:46:16,770 INFO L231 Difference]: Finished difference. Result has 162 places, 159 transitions, 382 flow [2025-02-06 18:46:16,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=162, PETRI_TRANSITIONS=159} [2025-02-06 18:46:16,770 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 12 predicate places. [2025-02-06 18:46:16,770 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 159 transitions, 382 flow [2025-02-06 18:46:16,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:16,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:16,770 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:16,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:46:16,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:16,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1269720701, now seen corresponding path program 1 times [2025-02-06 18:46:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623139614] [2025-02-06 18:46:16,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:16,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:46:16,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:46:16,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:16,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:16,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623139614] [2025-02-06 18:46:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623139614] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060204475] [2025-02-06 18:46:16,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:16,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:16,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:16,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:16,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:46:16,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:46:16,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:46:16,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:16,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:16,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:46:16,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:16,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:46:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060204475] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:46:17,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:46:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:46:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874470939] [2025-02-06 18:46:17,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:46:17,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:46:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:17,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:46:17,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:46:17,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-06 18:46:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 159 transitions, 382 flow. Second operand has 18 states, 18 states have (on average 77.27777777777777) internal successors, (1391), 18 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:17,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:17,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-06 18:46:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:20,352 INFO L124 PetriNetUnfolderBase]: 24267/54832 cut-off events. [2025-02-06 18:46:20,353 INFO L125 PetriNetUnfolderBase]: For 1128/1971 co-relation queries the response was YES. [2025-02-06 18:46:20,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91278 conditions, 54832 events. 24267/54832 cut-off events. For 1128/1971 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 607885 event pairs, 21160 based on Foata normal form. 21/47423 useless extension candidates. Maximal degree in co-relation 91201. Up to 35317 conditions per place. [2025-02-06 18:46:20,661 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 75 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2025-02-06 18:46:20,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 167 transitions, 610 flow [2025-02-06 18:46:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:46:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:46:20,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1233 transitions. [2025-02-06 18:46:20,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4467391304347826 [2025-02-06 18:46:20,664 INFO L175 Difference]: Start difference. First operand has 162 places, 159 transitions, 382 flow. Second operand 15 states and 1233 transitions. [2025-02-06 18:46:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 167 transitions, 610 flow [2025-02-06 18:46:20,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:46:20,667 INFO L231 Difference]: Finished difference. Result has 179 places, 167 transitions, 477 flow [2025-02-06 18:46:20,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=477, PETRI_PLACES=179, PETRI_TRANSITIONS=167} [2025-02-06 18:46:20,668 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 29 predicate places. [2025-02-06 18:46:20,668 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 477 flow [2025-02-06 18:46:20,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 77.27777777777777) internal successors, (1391), 18 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:20,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:20,669 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:20,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:46:20,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:20,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:20,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash -475831683, now seen corresponding path program 2 times [2025-02-06 18:46:20,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:20,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018856545] [2025-02-06 18:46:20,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:46:20,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:20,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:46:20,883 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 32 statements. [2025-02-06 18:46:20,883 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:46:20,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 18:46:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018856545] [2025-02-06 18:46:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018856545] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:46:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089209401] [2025-02-06 18:46:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:20,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:46:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:20,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:46:20,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:46:20,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2025-02-06 18:46:20,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 167 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:20,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:20,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2025-02-06 18:46:20,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:24,321 INFO L124 PetriNetUnfolderBase]: 25079/49916 cut-off events. [2025-02-06 18:46:24,321 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2025-02-06 18:46:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89031 conditions, 49916 events. 25079/49916 cut-off events. For 1857/1857 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 507727 event pairs, 819 based on Foata normal form. 441/44174 useless extension candidates. Maximal degree in co-relation 88930. Up to 30745 conditions per place. [2025-02-06 18:46:24,672 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 214 selfloop transitions, 6 changer transitions 0/293 dead transitions. [2025-02-06 18:46:24,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 293 transitions, 1167 flow [2025-02-06 18:46:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:46:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:46:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2025-02-06 18:46:24,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5960144927536232 [2025-02-06 18:46:24,673 INFO L175 Difference]: Start difference. First operand has 179 places, 167 transitions, 477 flow. Second operand 6 states and 658 transitions. [2025-02-06 18:46:24,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 293 transitions, 1167 flow [2025-02-06 18:46:24,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 293 transitions, 1157 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:46:24,679 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 475 flow [2025-02-06 18:46:24,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2025-02-06 18:46:24,680 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 29 predicate places. [2025-02-06 18:46:24,680 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 475 flow [2025-02-06 18:46:24,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:24,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:24,680 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:24,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:46:24,681 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:24,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1865879493, now seen corresponding path program 1 times [2025-02-06 18:46:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:24,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833285381] [2025-02-06 18:46:24,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:24,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:24,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:46:24,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:46:24,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:24,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 18:46:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833285381] [2025-02-06 18:46:24,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833285381] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:24,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:24,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:46:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202410840] [2025-02-06 18:46:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:24,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:24,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:24,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:24,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2025-02-06 18:46:24,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:24,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:24,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2025-02-06 18:46:24,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:28,085 INFO L124 PetriNetUnfolderBase]: 25050/51156 cut-off events. [2025-02-06 18:46:28,085 INFO L125 PetriNetUnfolderBase]: For 3992/3992 co-relation queries the response was YES. [2025-02-06 18:46:28,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90964 conditions, 51156 events. 25050/51156 cut-off events. For 3992/3992 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 523692 event pairs, 4960 based on Foata normal form. 441/45615 useless extension candidates. Maximal degree in co-relation 90867. Up to 33127 conditions per place. [2025-02-06 18:46:28,429 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 171 selfloop transitions, 6 changer transitions 0/250 dead transitions. [2025-02-06 18:46:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 250 transitions, 995 flow [2025-02-06 18:46:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2025-02-06 18:46:28,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6290760869565217 [2025-02-06 18:46:28,431 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 475 flow. Second operand 4 states and 463 transitions. [2025-02-06 18:46:28,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 250 transitions, 995 flow [2025-02-06 18:46:28,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 250 transitions, 979 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 18:46:28,449 INFO L231 Difference]: Finished difference. Result has 177 places, 166 transitions, 475 flow [2025-02-06 18:46:28,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2025-02-06 18:46:28,450 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 27 predicate places. [2025-02-06 18:46:28,450 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 475 flow [2025-02-06 18:46:28,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:28,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:28,450 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:46:28,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:46:28,451 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:46:28,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2108802586, now seen corresponding path program 1 times [2025-02-06 18:46:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119482207] [2025-02-06 18:46:28,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:28,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 18:46:28,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 18:46:28,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:28,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119482207] [2025-02-06 18:46:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119482207] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58302982] [2025-02-06 18:46:28,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:28,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:28,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:28,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:46:28,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 18:46:28,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 18:46:28,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:28,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:28,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 18:46:28,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:28,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:46:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:28,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58302982] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:46:28,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:46:28,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-06 18:46:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497544671] [2025-02-06 18:46:28,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:46:28,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:46:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:28,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:46:28,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:46:28,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-06 18:46:28,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 475 flow. Second operand has 23 states, 23 states have (on average 77.26086956521739) internal successors, (1777), 23 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:46:28,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:28,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-06 18:46:28,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand