./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-48c9605-m [2025-02-08 14:06:15,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:06:16,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:06:16,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:06:16,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:06:16,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:06:16,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:06:16,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:06:16,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:06:16,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:06:16,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:06:16,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:06:16,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:06:16,049 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:06:16,049 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:06:16,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:06:16,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:06:16,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:06:16,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:06:16,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:06:16,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:06:16,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:06:16,054 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 [2025-02-08 14:06:16,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:06:16,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:06:16,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:06:16,343 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:06:16,343 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:06:16,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2025-02-08 14:06:17,657 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17ce278eb/cd9903394d204b29acbf29e7f918ebcd/FLAG433b1d0af [2025-02-08 14:06:18,044 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:06:18,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2025-02-08 14:06:18,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17ce278eb/cd9903394d204b29acbf29e7f918ebcd/FLAG433b1d0af [2025-02-08 14:06:18,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17ce278eb/cd9903394d204b29acbf29e7f918ebcd [2025-02-08 14:06:18,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:06:18,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:06:18,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:06:18,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:06:18,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:06:18,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f72a2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18, skipping insertion in model container [2025-02-08 14:06:18,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:06:18,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:06:18,516 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:06:18,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:06:18,627 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:06:18,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18 WrapperNode [2025-02-08 14:06:18,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:06:18,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:06:18,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:06:18,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:06:18,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,694 INFO L138 Inliner]: procedures = 272, calls = 96, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 274 [2025-02-08 14:06:18,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:06:18,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:06:18,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:06:18,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:06:18,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,739 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]. [2025-02-08 14:06:18,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,755 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:06:18,768 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:06:18,768 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:06:18,768 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:06:18,771 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (1/1) ... [2025-02-08 14:06:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:06:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:18,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:06:18,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:06:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 14:06:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 14:06:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:06:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:06:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:06:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:06:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:06:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:06:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:06:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:06:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:06:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:06:18,831 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:06:18,955 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:06:18,957 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:06:19,335 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-08 14:06:19,335 INFO L1324 $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 [2025-02-08 14:06:19,435 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:06:19,436 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:06:19,840 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:06:19,842 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:06:19,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:06:19 BoogieIcfgContainer [2025-02-08 14:06:19,843 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:06:19,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:06:19,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:06:19,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:06:19,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:06:18" (1/3) ... [2025-02-08 14:06:19,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f7b682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:06:19, skipping insertion in model container [2025-02-08 14:06:19,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:18" (2/3) ... [2025-02-08 14:06:19,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f7b682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:06:19, skipping insertion in model container [2025-02-08 14:06:19,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:06:19" (3/3) ... [2025-02-08 14:06:19,855 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2025-02-08 14:06:19,870 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:06:19,873 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. [2025-02-08 14:06:19,873 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:06:19,934 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:06:19,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 129 transitions, 265 flow [2025-02-08 14:06:20,044 INFO L124 PetriNetUnfolderBase]: 38/185 cut-off events. [2025-02-08 14:06:20,048 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:06:20,054 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 784 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. [2025-02-08 14:06:20,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 129 transitions, 265 flow [2025-02-08 14:06:20,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 128 transitions, 263 flow [2025-02-08 14:06:20,071 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:20,088 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;@271a543c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:20,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 14:06:20,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:20,096 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:06:20,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:20,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:20,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:06:20,098 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)] === [2025-02-08 14:06:20,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash 687373, now seen corresponding path program 1 times [2025-02-08 14:06:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:20,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825649632] [2025-02-08 14:06:20,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:20,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:06:20,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:06:20,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:20,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:20,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:20,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825649632] [2025-02-08 14:06:20,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825649632] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:20,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:20,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172439439] [2025-02-08 14:06:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:20,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:20,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:20,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:20,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:20,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-08 14:06:20,495 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) [2025-02-08 14:06:20,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:20,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-08 14:06:20,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:21,010 INFO L124 PetriNetUnfolderBase]: 575/1882 cut-off events. [2025-02-08 14:06:21,011 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:06:21,020 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 13552 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. [2025-02-08 14:06:21,032 INFO L140 encePairwiseOnDemand]: 103/129 looper letters, 53 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2025-02-08 14:06:21,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 339 flow [2025-02-08 14:06:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2025-02-08 14:06:21,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5717054263565892 [2025-02-08 14:06:21,049 INFO L175 Difference]: Start difference. First operand has 106 places, 128 transitions, 263 flow. Second operand 4 states and 295 transitions. [2025-02-08 14:06:21,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 339 flow [2025-02-08 14:06:21,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:06:21,059 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 247 flow [2025-02-08 14:06:21,062 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} [2025-02-08 14:06:21,067 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2025-02-08 14:06:21,067 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 247 flow [2025-02-08 14:06:21,067 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) [2025-02-08 14:06:21,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:21,068 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:06:21,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:06:21,068 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)] === [2025-02-08 14:06:21,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -996694061, now seen corresponding path program 1 times [2025-02-08 14:06:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:21,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983175242] [2025-02-08 14:06:21,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:21,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:21,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:21,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:21,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:21,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:21,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983175242] [2025-02-08 14:06:21,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983175242] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951229091] [2025-02-08 14:06:21,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:21,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:21,311 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) [2025-02-08 14:06:21,313 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 [2025-02-08 14:06:21,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:21,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:21,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:21,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:21,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:06:21,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:21,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:06:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951229091] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:21,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:06:21,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:06:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159236884] [2025-02-08 14:06:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:21,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:21,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:21,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:06:21,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-08 14:06:21,484 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) [2025-02-08 14:06:21,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:21,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-08 14:06:21,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:21,899 INFO L124 PetriNetUnfolderBase]: 575/1881 cut-off events. [2025-02-08 14:06:21,899 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:06:21,903 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 13542 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. [2025-02-08 14:06:21,912 INFO L140 encePairwiseOnDemand]: 124/129 looper letters, 49 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2025-02-08 14:06:21,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 353 flow [2025-02-08 14:06:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2025-02-08 14:06:21,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4909560723514212 [2025-02-08 14:06:21,916 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 247 flow. Second operand 6 states and 380 transitions. [2025-02-08 14:06:21,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 353 flow [2025-02-08 14:06:21,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 109 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:21,922 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 253 flow [2025-02-08 14:06:21,922 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} [2025-02-08 14:06:21,923 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 8 predicate places. [2025-02-08 14:06:21,923 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 253 flow [2025-02-08 14:06:21,924 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) [2025-02-08 14:06:21,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:21,924 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:06:21,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:06:22,127 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 [2025-02-08 14:06:22,128 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)] === [2025-02-08 14:06:22,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash -832744201, now seen corresponding path program 1 times [2025-02-08 14:06:22,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:22,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382183880] [2025-02-08 14:06:22,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:22,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:22,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:06:22,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:06:22,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:22,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:06:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:22,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382183880] [2025-02-08 14:06:22,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382183880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:22,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:22,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:22,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459305594] [2025-02-08 14:06:22,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:22,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:06:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:22,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:06:22,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:06:22,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-08 14:06:22,224 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) [2025-02-08 14:06:22,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:22,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-08 14:06:22,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:22,553 INFO L124 PetriNetUnfolderBase]: 575/1880 cut-off events. [2025-02-08 14:06:22,554 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 14:06:22,557 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 13543 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. [2025-02-08 14:06:22,565 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 50 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-02-08 14:06:22,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 357 flow [2025-02-08 14:06:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:06:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:06:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2025-02-08 14:06:22,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-08 14:06:22,566 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 253 flow. Second operand 3 states and 215 transitions. [2025-02-08 14:06:22,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 357 flow [2025-02-08 14:06:22,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 335 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-08 14:06:22,570 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 235 flow [2025-02-08 14:06:22,570 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} [2025-02-08 14:06:22,570 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 3 predicate places. [2025-02-08 14:06:22,571 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 235 flow [2025-02-08 14:06:22,571 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) [2025-02-08 14:06:22,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:22,571 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:22,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:06:22,571 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)] === [2025-02-08 14:06:22,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1400624230, now seen corresponding path program 1 times [2025-02-08 14:06:22,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:22,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796442245] [2025-02-08 14:06:22,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:22,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:22,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:22,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:22,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796442245] [2025-02-08 14:06:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796442245] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711093988] [2025-02-08 14:06:22,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:22,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:22,688 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) [2025-02-08 14:06:22,690 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 [2025-02-08 14:06:22,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:22,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:22,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:22,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:22,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:06:22,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:22,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:22,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711093988] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:22,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:22,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:06:22,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914358913] [2025-02-08 14:06:22,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:22,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:06:22,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:22,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:06:22,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:06:22,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-08 14:06:22,886 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) [2025-02-08 14:06:22,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:22,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-08 14:06:22,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:23,296 INFO L124 PetriNetUnfolderBase]: 575/1884 cut-off events. [2025-02-08 14:06:23,297 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-08 14:06:23,299 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 13536 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. [2025-02-08 14:06:23,306 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 50 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2025-02-08 14:06:23,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 364 flow [2025-02-08 14:06:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:06:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:06:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 437 transitions. [2025-02-08 14:06:23,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4839424141749723 [2025-02-08 14:06:23,308 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 235 flow. Second operand 7 states and 437 transitions. [2025-02-08 14:06:23,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 364 flow [2025-02-08 14:06:23,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:23,313 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 261 flow [2025-02-08 14:06:23,313 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} [2025-02-08 14:06:23,315 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 9 predicate places. [2025-02-08 14:06:23,315 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 261 flow [2025-02-08 14:06:23,315 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) [2025-02-08 14:06:23,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:23,315 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:23,325 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 [2025-02-08 14:06:23,516 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 [2025-02-08 14:06:23,517 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)] === [2025-02-08 14:06:23,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash -896844326, now seen corresponding path program 2 times [2025-02-08 14:06:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:23,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694195531] [2025-02-08 14:06:23,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:23,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 14:06:23,539 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-08 14:06:23,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:06:23,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:06:23,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694195531] [2025-02-08 14:06:23,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694195531] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:23,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070187849] [2025-02-08 14:06:23,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:23,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:23,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:23,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:23,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2025-02-08 14:06:23,613 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) [2025-02-08 14:06:23,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:23,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2025-02-08 14:06:23,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:23,932 INFO L124 PetriNetUnfolderBase]: 594/1795 cut-off events. [2025-02-08 14:06:23,932 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 14:06:23,936 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 12610 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. [2025-02-08 14:06:23,943 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 98 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2025-02-08 14:06:23,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 152 transitions, 545 flow [2025-02-08 14:06:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2025-02-08 14:06:23,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6027131782945736 [2025-02-08 14:06:23,945 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 261 flow. Second operand 4 states and 311 transitions. [2025-02-08 14:06:23,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 152 transitions, 545 flow [2025-02-08 14:06:23,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 152 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:23,950 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 263 flow [2025-02-08 14:06:23,950 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} [2025-02-08 14:06:23,951 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 9 predicate places. [2025-02-08 14:06:23,953 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 263 flow [2025-02-08 14:06:23,953 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) [2025-02-08 14:06:23,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:23,953 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:23,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:06:23,954 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)] === [2025-02-08 14:06:23,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1102841628, now seen corresponding path program 1 times [2025-02-08 14:06:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:23,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763087637] [2025-02-08 14:06:23,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:23,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:23,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:06:23,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:06:23,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:23,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:24,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763087637] [2025-02-08 14:06:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763087637] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004053800] [2025-02-08 14:06:24,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:24,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:24,121 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) [2025-02-08 14:06:24,123 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 [2025-02-08 14:06:24,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:06:24,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:06:24,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:24,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:24,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:06:24,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:24,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:24,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004053800] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:24,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:24,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-08 14:06:24,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392413982] [2025-02-08 14:06:24,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:24,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:06:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:24,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:06:24,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:06:24,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-08 14:06:24,379 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) [2025-02-08 14:06:24,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:24,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-08 14:06:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:24,756 INFO L124 PetriNetUnfolderBase]: 573/1843 cut-off events. [2025-02-08 14:06:24,756 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-02-08 14:06:24,759 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 13035 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. [2025-02-08 14:06:24,765 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 50 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2025-02-08 14:06:24,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 441 flow [2025-02-08 14:06:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:06:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:06:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 879 transitions. [2025-02-08 14:06:24,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4542635658914729 [2025-02-08 14:06:24,771 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 263 flow. Second operand 15 states and 879 transitions. [2025-02-08 14:06:24,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 441 flow [2025-02-08 14:06:24,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 117 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:06:24,776 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 354 flow [2025-02-08 14:06:24,776 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} [2025-02-08 14:06:24,777 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 24 predicate places. [2025-02-08 14:06:24,777 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 354 flow [2025-02-08 14:06:24,778 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) [2025-02-08 14:06:24,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:24,778 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:24,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:06:24,983 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 [2025-02-08 14:06:24,983 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)] === [2025-02-08 14:06:24,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash 286237340, now seen corresponding path program 2 times [2025-02-08 14:06:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808247204] [2025-02-08 14:06:24,984 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:24,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:24,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:06:25,008 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:06:25,008 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:06:25,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808247204] [2025-02-08 14:06:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808247204] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438540457] [2025-02-08 14:06:25,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:25,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:25,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:25,294 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) [2025-02-08 14:06:25,296 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 [2025-02-08 14:06:25,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:06:25,395 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:06:25,396 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:06:25,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:25,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 14:06:25,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:25,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438540457] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:25,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:25,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-08 14:06:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946416316] [2025-02-08 14:06:25,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:25,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:06:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:25,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:06:25,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:06:25,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2025-02-08 14:06:25,715 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) [2025-02-08 14:06:25,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:25,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2025-02-08 14:06:25,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:26,219 INFO L124 PetriNetUnfolderBase]: 573/1852 cut-off events. [2025-02-08 14:06:26,220 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-02-08 14:06:26,224 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 13031 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. [2025-02-08 14:06:26,230 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 50 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2025-02-08 14:06:26,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 123 transitions, 550 flow [2025-02-08 14:06:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 14:06:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 14:06:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1208 transitions. [2025-02-08 14:06:26,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4459210040605389 [2025-02-08 14:06:26,235 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 354 flow. Second operand 21 states and 1208 transitions. [2025-02-08 14:06:26,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 123 transitions, 550 flow [2025-02-08 14:06:26,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 123 transitions, 540 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:06:26,240 INFO L231 Difference]: Finished difference. Result has 149 places, 123 transitions, 455 flow [2025-02-08 14:06:26,241 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} [2025-02-08 14:06:26,242 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, 43 predicate places. [2025-02-08 14:06:26,243 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 123 transitions, 455 flow [2025-02-08 14:06:26,244 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) [2025-02-08 14:06:26,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:26,244 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:26,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:06:26,449 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 [2025-02-08 14:06:26,449 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)] === [2025-02-08 14:06:26,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 331890262, now seen corresponding path program 3 times [2025-02-08 14:06:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968714589] [2025-02-08 14:06:26,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:06:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:26,467 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-02-08 14:06:26,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:06:26,545 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 14:06:26,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:26,545 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:06:26,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 14:06:26,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:06:26,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:26,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:26,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:06:26,600 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:06:26,601 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-02-08 14:06:26,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-02-08 14:06:26,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-02-08 14:06:26,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-02-08 14:06:26,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-02-08 14:06:26,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-02-08 14:06:26,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-02-08 14:06:26,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:06:26,604 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-02-08 14:06:26,609 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:06:26,610 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:06:26,655 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:06:26,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 184 transitions, 384 flow [2025-02-08 14:06:26,689 INFO L124 PetriNetUnfolderBase]: 64/315 cut-off events. [2025-02-08 14:06:26,689 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:06:26,691 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 1608 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. [2025-02-08 14:06:26,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 184 transitions, 384 flow [2025-02-08 14:06:26,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 184 transitions, 384 flow [2025-02-08 14:06:26,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:26,697 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;@271a543c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:26,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-02-08 14:06:26,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:26,703 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:06:26,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:26,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:26,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:06:26,703 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)] === [2025-02-08 14:06:26,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash 870085, now seen corresponding path program 1 times [2025-02-08 14:06:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:26,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91388634] [2025-02-08 14:06:26,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:26,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:06:26,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:06:26,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:26,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:26,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:26,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91388634] [2025-02-08 14:06:26,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91388634] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:26,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:26,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:26,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703961628] [2025-02-08 14:06:26,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:26,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:26,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:26,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:26,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-08 14:06:26,755 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) [2025-02-08 14:06:26,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:26,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-08 14:06:26,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:31,093 INFO L124 PetriNetUnfolderBase]: 24270/54468 cut-off events. [2025-02-08 14:06:31,094 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2025-02-08 14:06:31,176 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 1456. Compared 600370 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. [2025-02-08 14:06:31,406 INFO L140 encePairwiseOnDemand]: 148/184 looper letters, 77 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2025-02-08 14:06:31,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 156 transitions, 488 flow [2025-02-08 14:06:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2025-02-08 14:06:31,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5665760869565217 [2025-02-08 14:06:31,408 INFO L175 Difference]: Start difference. First operand has 150 places, 184 transitions, 384 flow. Second operand 4 states and 417 transitions. [2025-02-08 14:06:31,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 156 transitions, 488 flow [2025-02-08 14:06:31,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 156 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:06:31,411 INFO L231 Difference]: Finished difference. Result has 155 places, 156 transitions, 348 flow [2025-02-08 14:06:31,412 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} [2025-02-08 14:06:31,412 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 5 predicate places. [2025-02-08 14:06:31,412 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 348 flow [2025-02-08 14:06:31,413 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) [2025-02-08 14:06:31,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:31,413 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:06:31,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:06:31,413 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)] === [2025-02-08 14:06:31,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash 151694547, now seen corresponding path program 1 times [2025-02-08 14:06:31,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:31,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125789276] [2025-02-08 14:06:31,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:31,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:31,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:31,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:31,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125789276] [2025-02-08 14:06:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125789276] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417610601] [2025-02-08 14:06:31,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:31,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:31,477 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) [2025-02-08 14:06:31,479 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 [2025-02-08 14:06:31,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:31,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:31,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:31,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:31,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:06:31,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:31,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:06:31,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417610601] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:31,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:06:31,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:06:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367382953] [2025-02-08 14:06:31,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:31,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:31,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:31,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:31,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:06:31,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-08 14:06:31,596 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) [2025-02-08 14:06:31,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:31,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-08 14:06:31,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:34,896 INFO L124 PetriNetUnfolderBase]: 24270/54467 cut-off events. [2025-02-08 14:06:34,896 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2025-02-08 14:06:34,993 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 1456. Compared 600312 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. [2025-02-08 14:06:35,201 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 73 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2025-02-08 14:06:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 155 transitions, 502 flow [2025-02-08 14:06:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2025-02-08 14:06:35,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2025-02-08 14:06:35,204 INFO L175 Difference]: Start difference. First operand has 155 places, 156 transitions, 348 flow. Second operand 6 states and 536 transitions. [2025-02-08 14:06:35,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 155 transitions, 502 flow [2025-02-08 14:06:35,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:35,207 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 354 flow [2025-02-08 14:06:35,207 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} [2025-02-08 14:06:35,209 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 8 predicate places. [2025-02-08 14:06:35,209 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 354 flow [2025-02-08 14:06:35,210 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) [2025-02-08 14:06:35,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:35,210 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:06:35,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:06:35,414 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 [2025-02-08 14:06:35,414 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)] === [2025-02-08 14:06:35,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 407564463, now seen corresponding path program 1 times [2025-02-08 14:06:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641328467] [2025-02-08 14:06:35,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:35,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:06:35,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:06:35,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:35,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:06:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641328467] [2025-02-08 14:06:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641328467] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:35,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:35,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570009739] [2025-02-08 14:06:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:35,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:06:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:35,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:06:35,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:06:35,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-08 14:06:35,471 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) [2025-02-08 14:06:35,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:35,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-08 14:06:35,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:38,634 INFO L124 PetriNetUnfolderBase]: 24270/54466 cut-off events. [2025-02-08 14:06:38,634 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2025-02-08 14:06:38,737 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 1456. Compared 600524 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. [2025-02-08 14:06:38,880 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 74 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2025-02-08 14:06:38,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 506 flow [2025-02-08 14:06:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:06:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:06:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2025-02-08 14:06:38,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.552536231884058 [2025-02-08 14:06:38,881 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 354 flow. Second operand 3 states and 305 transitions. [2025-02-08 14:06:38,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 506 flow [2025-02-08 14:06:38,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 154 transitions, 484 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-08 14:06:38,884 INFO L231 Difference]: Finished difference. Result has 153 places, 154 transitions, 336 flow [2025-02-08 14:06:38,885 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} [2025-02-08 14:06:38,885 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 3 predicate places. [2025-02-08 14:06:38,885 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 154 transitions, 336 flow [2025-02-08 14:06:38,886 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) [2025-02-08 14:06:38,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:38,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:38,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:06:38,886 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)] === [2025-02-08 14:06:38,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash 830117703, now seen corresponding path program 1 times [2025-02-08 14:06:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243465343] [2025-02-08 14:06:38,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:38,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:38,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:38,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:38,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:38,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:38,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243465343] [2025-02-08 14:06:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243465343] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549379082] [2025-02-08 14:06:38,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:38,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:38,958 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) [2025-02-08 14:06:38,960 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 [2025-02-08 14:06:39,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:39,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:39,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:39,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:39,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:06:39,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:39,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549379082] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:39,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:06:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794021602] [2025-02-08 14:06:39,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:39,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:06:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:39,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:06:39,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:06:39,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-08 14:06:39,127 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) [2025-02-08 14:06:39,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:39,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-08 14:06:39,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:42,406 INFO L124 PetriNetUnfolderBase]: 24270/54470 cut-off events. [2025-02-08 14:06:42,407 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2025-02-08 14:06:42,477 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 1456. Compared 600376 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. [2025-02-08 14:06:42,604 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 74 selfloop transitions, 7 changer transitions 0/157 dead transitions. [2025-02-08 14:06:42,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 513 flow [2025-02-08 14:06:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:06:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:06:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2025-02-08 14:06:42,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47748447204968947 [2025-02-08 14:06:42,606 INFO L175 Difference]: Start difference. First operand has 153 places, 154 transitions, 336 flow. Second operand 7 states and 615 transitions. [2025-02-08 14:06:42,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 513 flow [2025-02-08 14:06:42,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:42,609 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 362 flow [2025-02-08 14:06:42,609 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} [2025-02-08 14:06:42,610 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 9 predicate places. [2025-02-08 14:06:42,610 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 362 flow [2025-02-08 14:06:42,610 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) [2025-02-08 14:06:42,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:42,610 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:42,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:06:42,815 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 [2025-02-08 14:06:42,815 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)] === [2025-02-08 14:06:42,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash -878427001, now seen corresponding path program 2 times [2025-02-08 14:06:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674253642] [2025-02-08 14:06:42,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:42,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 14:06:42,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-08 14:06:42,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:06:42,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:06:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674253642] [2025-02-08 14:06:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674253642] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:42,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825781390] [2025-02-08 14:06:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:42,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:42,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:42,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:42,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2025-02-08 14:06:42,877 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) [2025-02-08 14:06:42,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:42,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2025-02-08 14:06:42,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:46,361 INFO L124 PetriNetUnfolderBase]: 26448/56648 cut-off events. [2025-02-08 14:06:46,361 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2025-02-08 14:06:46,442 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 609402 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. [2025-02-08 14:06:46,574 INFO L140 encePairwiseOnDemand]: 178/184 looper letters, 126 selfloop transitions, 3 changer transitions 0/202 dead transitions. [2025-02-08 14:06:46,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 202 transitions, 710 flow [2025-02-08 14:06:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2025-02-08 14:06:46,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5801630434782609 [2025-02-08 14:06:46,575 INFO L175 Difference]: Start difference. First operand has 159 places, 157 transitions, 362 flow. Second operand 4 states and 427 transitions. [2025-02-08 14:06:46,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 202 transitions, 710 flow [2025-02-08 14:06:46,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 202 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:46,578 INFO L231 Difference]: Finished difference. Result has 162 places, 159 transitions, 382 flow [2025-02-08 14:06:46,578 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} [2025-02-08 14:06:46,579 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 12 predicate places. [2025-02-08 14:06:46,579 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 159 transitions, 382 flow [2025-02-08 14:06:46,579 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) [2025-02-08 14:06:46,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:46,579 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:46,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:06:46,579 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)] === [2025-02-08 14:06:46,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash -132104000, now seen corresponding path program 1 times [2025-02-08 14:06:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152460699] [2025-02-08 14:06:46,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:46,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:06:46,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:06:46,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:46,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152460699] [2025-02-08 14:06:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152460699] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95005485] [2025-02-08 14:06:46,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:46,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:46,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:46,692 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) [2025-02-08 14:06:46,694 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 [2025-02-08 14:06:46,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:06:46,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:06:46,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:46,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:46,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:06:46,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:46,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95005485] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:46,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-08 14:06:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074335972] [2025-02-08 14:06:46,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:46,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:06:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:46,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:06:46,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:06:46,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-08 14:06:46,921 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) [2025-02-08 14:06:46,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:46,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-08 14:06:46,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:50,579 INFO L124 PetriNetUnfolderBase]: 24267/54832 cut-off events. [2025-02-08 14:06:50,579 INFO L125 PetriNetUnfolderBase]: For 1128/1971 co-relation queries the response was YES. [2025-02-08 14:06:50,709 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 1459. Compared 607667 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. [2025-02-08 14:06:50,851 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 75 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2025-02-08 14:06:50,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 167 transitions, 610 flow [2025-02-08 14:06:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:06:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:06:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1233 transitions. [2025-02-08 14:06:50,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4467391304347826 [2025-02-08 14:06:50,854 INFO L175 Difference]: Start difference. First operand has 162 places, 159 transitions, 382 flow. Second operand 15 states and 1233 transitions. [2025-02-08 14:06:50,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 167 transitions, 610 flow [2025-02-08 14:06:50,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:50,859 INFO L231 Difference]: Finished difference. Result has 179 places, 167 transitions, 477 flow [2025-02-08 14:06:50,859 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} [2025-02-08 14:06:50,860 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 29 predicate places. [2025-02-08 14:06:50,860 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 477 flow [2025-02-08 14:06:50,861 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) [2025-02-08 14:06:50,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:50,861 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:50,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 14:06:51,061 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 [2025-02-08 14:06:51,062 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)] === [2025-02-08 14:06:51,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash 717243968, now seen corresponding path program 2 times [2025-02-08 14:06:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443288884] [2025-02-08 14:06:51,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:51,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-08 14:06:51,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 32 statements. [2025-02-08 14:06:51,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:06:51,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 14:06:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:51,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443288884] [2025-02-08 14:06:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443288884] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:51,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:51,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:06:51,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551898862] [2025-02-08 14:06:51,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:51,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:51,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:51,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:51,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:06:51,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2025-02-08 14:06:51,144 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) [2025-02-08 14:06:51,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:51,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2025-02-08 14:06:51,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:54,900 INFO L124 PetriNetUnfolderBase]: 25079/49916 cut-off events. [2025-02-08 14:06:54,901 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2025-02-08 14:06:55,058 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 1325. Compared 507668 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. [2025-02-08 14:06:55,194 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 214 selfloop transitions, 6 changer transitions 0/293 dead transitions. [2025-02-08 14:06:55,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 293 transitions, 1167 flow [2025-02-08 14:06:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2025-02-08 14:06:55,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5960144927536232 [2025-02-08 14:06:55,196 INFO L175 Difference]: Start difference. First operand has 179 places, 167 transitions, 477 flow. Second operand 6 states and 658 transitions. [2025-02-08 14:06:55,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 293 transitions, 1167 flow [2025-02-08 14:06:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 293 transitions, 1157 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:06:55,204 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 475 flow [2025-02-08 14:06:55,204 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} [2025-02-08 14:06:55,204 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 29 predicate places. [2025-02-08 14:06:55,205 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 475 flow [2025-02-08 14:06:55,205 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) [2025-02-08 14:06:55,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:55,205 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:55,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:06:55,205 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)] === [2025-02-08 14:06:55,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash 759727323, now seen corresponding path program 1 times [2025-02-08 14:06:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:55,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161081763] [2025-02-08 14:06:55,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:55,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:06:55,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:06:55,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:55,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 14:06:55,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:55,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161081763] [2025-02-08 14:06:55,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161081763] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:55,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:55,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413567671] [2025-02-08 14:06:55,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:55,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:55,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:55,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:55,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:55,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2025-02-08 14:06:55,269 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) [2025-02-08 14:06:55,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:55,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2025-02-08 14:06:55,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:59,100 INFO L124 PetriNetUnfolderBase]: 25049/51148 cut-off events. [2025-02-08 14:06:59,100 INFO L125 PetriNetUnfolderBase]: For 3998/3998 co-relation queries the response was YES. [2025-02-08 14:06:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90953 conditions, 51148 events. 25049/51148 cut-off events. For 3998/3998 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 523465 event pairs, 4960 based on Foata normal form. 441/45624 useless extension candidates. Maximal degree in co-relation 90856. Up to 33127 conditions per place. [2025-02-08 14:06:59,380 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 171 selfloop transitions, 6 changer transitions 0/250 dead transitions. [2025-02-08 14:06:59,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 250 transitions, 995 flow [2025-02-08 14:06:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2025-02-08 14:06:59,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6290760869565217 [2025-02-08 14:06:59,382 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 475 flow. Second operand 4 states and 463 transitions. [2025-02-08 14:06:59,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 250 transitions, 995 flow [2025-02-08 14:06:59,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 250 transitions, 979 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 14:06:59,401 INFO L231 Difference]: Finished difference. Result has 177 places, 166 transitions, 475 flow [2025-02-08 14:06:59,402 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} [2025-02-08 14:06:59,402 INFO L279 CegarLoopForPetriNet]: 150 programPoint places, 27 predicate places. [2025-02-08 14:06:59,402 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 475 flow [2025-02-08 14:06:59,402 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) [2025-02-08 14:06:59,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:59,402 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:06:59,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 14:06:59,403 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)] === [2025-02-08 14:06:59,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash -46455069, now seen corresponding path program 1 times [2025-02-08 14:06:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:59,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688056773] [2025-02-08 14:06:59,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:59,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 14:06:59,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:06:59,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:59,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688056773] [2025-02-08 14:06:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688056773] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053841076] [2025-02-08 14:06:59,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:59,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:59,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:59,678 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) [2025-02-08 14:06:59,680 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 [2025-02-08 14:06:59,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 14:06:59,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:06:59,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:59,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:59,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 14:06:59,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:59,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:00,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053841076] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:00,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:00,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-08 14:07:00,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64728534] [2025-02-08 14:07:00,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:00,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:07:00,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:00,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:07:00,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:07:00,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 184 [2025-02-08 14:07:00,045 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) [2025-02-08 14:07:00,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:00,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 184 [2025-02-08 14:07:00,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand