./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_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_75-tricky_address2_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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:06:25,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:06:25,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:06:25,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:06:25,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:06:25,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:06:25,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:06:25,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:06:25,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:06:25,745 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:06:25,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:06:25,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:06:25,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:06:25,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:06:25,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:06:25,747 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:06:25,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:06:25,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:06:25,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:06:25,748 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 -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2025-02-08 14:06:26,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:06:26,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:06:26,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:06:26,078 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:06:26,079 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:06:26,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2025-02-08 14:06:27,421 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ef6bfb9c/883f3e4a52dc430d9e9ff8062bddf2f0/FLAGc22945939 [2025-02-08 14:06:27,782 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:06:27,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2025-02-08 14:06:27,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ef6bfb9c/883f3e4a52dc430d9e9ff8062bddf2f0/FLAGc22945939 [2025-02-08 14:06:27,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ef6bfb9c/883f3e4a52dc430d9e9ff8062bddf2f0 [2025-02-08 14:06:27,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:06:28,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:06:28,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:06:28,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:06:28,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:06:28,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:06:27" (1/1) ... [2025-02-08 14:06:28,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4448f301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28, skipping insertion in model container [2025-02-08 14:06:28,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:06:27" (1/1) ... [2025-02-08 14:06:28,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:06:28,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:06:28,543 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:06:28,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:06:28,675 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:06:28,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28 WrapperNode [2025-02-08 14:06:28,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:06:28,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:06:28,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:06:28,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:06:28,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,743 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 271 [2025-02-08 14:06:28,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:06:28,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:06:28,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:06:28,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:06:28,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,787 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2025-02-08 14:06:28,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,806 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:06:28,822 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:06:28,825 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:06:28,826 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:06:28,826 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (1/1) ... [2025-02-08 14:06:28,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:06:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:28,864 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 14:06:28,867 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 14:06:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 14:06:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:06:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:06:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:06:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:06:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:06:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:06:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:06:28,891 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 14:06:29,023 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:06:29,025 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:06:29,346 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L953: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-08 14:06:29,346 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L953-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-08 14:06:29,439 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:06:29,439 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:06:29,847 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:06:29,848 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:06:29,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:06:29 BoogieIcfgContainer [2025-02-08 14:06:29,849 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:06:29,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:06:29,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:06:29,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:06:29,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:06:27" (1/3) ... [2025-02-08 14:06:29,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634861b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:06:29, skipping insertion in model container [2025-02-08 14:06:29,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:06:28" (2/3) ... [2025-02-08 14:06:29,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634861b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:06:29, skipping insertion in model container [2025-02-08 14:06:29,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:06:29" (3/3) ... [2025-02-08 14:06:29,858 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2025-02-08 14:06:29,871 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:06:29,873 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_75-tricky_address2_racefree.i that has 2 procedures, 93 locations, 1 initial locations, 13 loop locations, and 14 error locations. [2025-02-08 14:06:29,874 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:06:29,932 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:06:29,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 117 transitions, 241 flow [2025-02-08 14:06:30,049 INFO L124 PetriNetUnfolderBase]: 35/167 cut-off events. [2025-02-08 14:06:30,052 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:06:30,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 35/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 666 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2025-02-08 14:06:30,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 117 transitions, 241 flow [2025-02-08 14:06:30,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 116 transitions, 239 flow [2025-02-08 14:06:30,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:30,090 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;@39b85809, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:30,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-02-08 14:06:30,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:30,098 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:06:30,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:30,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:30,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:06:30,100 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:30,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 656844, now seen corresponding path program 1 times [2025-02-08 14:06:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:30,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810713606] [2025-02-08 14:06:30,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:30,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:06:30,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:06:30,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:30,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:30,455 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 14:06:30,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:30,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810713606] [2025-02-08 14:06:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810713606] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:30,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:30,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111238153] [2025-02-08 14:06:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:30,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:30,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:30,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:30,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 117 [2025-02-08 14:06:30,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 14:06:30,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:30,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 117 [2025-02-08 14:06:30,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:30,892 INFO L124 PetriNetUnfolderBase]: 440/1447 cut-off events. [2025-02-08 14:06:30,893 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:06:30,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 1447 events. 440/1447 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9919 event pairs, 396 based on Foata normal form. 392/1664 useless extension candidates. Maximal degree in co-relation 2241. Up to 881 conditions per place. [2025-02-08 14:06:30,948 INFO L140 encePairwiseOnDemand]: 91/117 looper letters, 47 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2025-02-08 14:06:30,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 98 transitions, 303 flow [2025-02-08 14:06:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2025-02-08 14:06:30,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662393162393162 [2025-02-08 14:06:30,961 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 239 flow. Second operand 4 states and 265 transitions. [2025-02-08 14:06:30,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 98 transitions, 303 flow [2025-02-08 14:06:30,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 303 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:06:30,970 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 223 flow [2025-02-08 14:06:30,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2025-02-08 14:06:30,975 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2025-02-08 14:06:30,976 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 223 flow [2025-02-08 14:06:30,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 14:06:30,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:30,976 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:06:30,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:06:30,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:30,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1906247664, now seen corresponding path program 1 times [2025-02-08 14:06:30,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:30,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571233400] [2025-02-08 14:06:30,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:30,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:30,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:31,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:31,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:31,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:31,128 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 14:06:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571233400] [2025-02-08 14:06:31,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571233400] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076196829] [2025-02-08 14:06:31,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:31,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:31,133 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 14:06:31,135 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 14:06:31,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:31,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:31,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:31,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:31,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:06:31,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:31,303 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 14:06:31,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:06:31,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076196829] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:31,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:06:31,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:06:31,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466467] [2025-02-08 14:06:31,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:31,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:31,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:31,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:06:31,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 117 [2025-02-08 14:06:31,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 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 14:06:31,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:31,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 117 [2025-02-08 14:06:31,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:31,650 INFO L124 PetriNetUnfolderBase]: 440/1446 cut-off events. [2025-02-08 14:06:31,650 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:06:31,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 1446 events. 440/1446 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9941 event pairs, 396 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 2327. Up to 876 conditions per place. [2025-02-08 14:06:31,657 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 43 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2025-02-08 14:06:31,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 317 flow [2025-02-08 14:06:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 338 transitions. [2025-02-08 14:06:31,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-02-08 14:06:31,659 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 223 flow. Second operand 6 states and 338 transitions. [2025-02-08 14:06:31,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 317 flow [2025-02-08 14:06:31,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:31,663 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 229 flow [2025-02-08 14:06:31,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2025-02-08 14:06:31,664 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2025-02-08 14:06:31,664 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 229 flow [2025-02-08 14:06:31,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 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 14:06:31,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:31,665 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:06:31,673 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 14:06:31,869 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 14:06:31,869 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:31,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1035865110, now seen corresponding path program 1 times [2025-02-08 14:06:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469329240] [2025-02-08 14:06:31,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:31,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:06:31,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:06:31,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:31,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:31,947 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 14:06:31,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:31,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469329240] [2025-02-08 14:06:31,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469329240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:31,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:31,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:31,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257904147] [2025-02-08 14:06:31,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:31,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:06:31,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:31,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:06:31,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:06:31,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 117 [2025-02-08 14:06:31,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 14:06:31,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:31,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 117 [2025-02-08 14:06:31,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:32,143 INFO L124 PetriNetUnfolderBase]: 440/1445 cut-off events. [2025-02-08 14:06:32,143 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 14:06:32,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1445 events. 440/1445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9885 event pairs, 396 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 2323. Up to 879 conditions per place. [2025-02-08 14:06:32,150 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 44 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2025-02-08 14:06:32,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 321 flow [2025-02-08 14:06:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:06:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:06:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2025-02-08 14:06:32,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5441595441595442 [2025-02-08 14:06:32,153 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 229 flow. Second operand 3 states and 191 transitions. [2025-02-08 14:06:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 321 flow [2025-02-08 14:06:32,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 299 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-08 14:06:32,159 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 211 flow [2025-02-08 14:06:32,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2025-02-08 14:06:32,160 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2025-02-08 14:06:32,160 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 211 flow [2025-02-08 14:06:32,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 14:06:32,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:32,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:32,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:06:32,161 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:32,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash -964702297, now seen corresponding path program 1 times [2025-02-08 14:06:32,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:32,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812933756] [2025-02-08 14:06:32,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:32,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:32,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:32,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:32,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:32,292 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 14:06:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812933756] [2025-02-08 14:06:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812933756] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651036644] [2025-02-08 14:06:32,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:32,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:32,295 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 14:06:32,297 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 14:06:32,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:32,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:32,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:32,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:32,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:06:32,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:32,428 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 14:06:32,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:32,463 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 14:06:32,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651036644] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:32,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:06:32,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560253085] [2025-02-08 14:06:32,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:32,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:06:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:32,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:06:32,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:06:32,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 117 [2025-02-08 14:06:32,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 211 flow. Second operand has 10 states, 10 states have (on average 49.3) internal successors, (493), 10 states have internal predecessors, (493), 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 14:06:32,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 117 [2025-02-08 14:06:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:32,797 INFO L124 PetriNetUnfolderBase]: 440/1449 cut-off events. [2025-02-08 14:06:32,798 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-08 14:06:32,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 1449 events. 440/1449 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9904 event pairs, 396 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 2316. Up to 877 conditions per place. [2025-02-08 14:06:32,805 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 44 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2025-02-08 14:06:32,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 99 transitions, 328 flow [2025-02-08 14:06:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:06:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:06:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 389 transitions. [2025-02-08 14:06:32,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47496947496947495 [2025-02-08 14:06:32,807 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 211 flow. Second operand 7 states and 389 transitions. [2025-02-08 14:06:32,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 99 transitions, 328 flow [2025-02-08 14:06:32,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:32,811 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 237 flow [2025-02-08 14:06:32,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2025-02-08 14:06:32,812 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 9 predicate places. [2025-02-08 14:06:32,813 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 237 flow [2025-02-08 14:06:32,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.3) internal successors, (493), 10 states have internal predecessors, (493), 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 14:06:32,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:32,814 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:32,823 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 14:06:33,014 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 14:06:33,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:33,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash -262383321, now seen corresponding path program 2 times [2025-02-08 14:06:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448056265] [2025-02-08 14:06:33,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:33,030 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 14:06:33,037 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-08 14:06:33,037 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:06:33,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:33,100 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 14:06:33,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448056265] [2025-02-08 14:06:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448056265] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:33,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:33,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067792779] [2025-02-08 14:06:33,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:33,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:33,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:33,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:33,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 117 [2025-02-08 14:06:33,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 14:06:33,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:33,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 117 [2025-02-08 14:06:33,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:33,354 INFO L124 PetriNetUnfolderBase]: 458/1464 cut-off events. [2025-02-08 14:06:33,355 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 14:06:33,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1464 events. 458/1464 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9997 event pairs, 210 based on Foata normal form. 19/1324 useless extension candidates. Maximal degree in co-relation 2359. Up to 852 conditions per place. [2025-02-08 14:06:33,363 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 86 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-02-08 14:06:33,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 134 transitions, 485 flow [2025-02-08 14:06:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2025-02-08 14:06:33,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2025-02-08 14:06:33,365 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 237 flow. Second operand 4 states and 275 transitions. [2025-02-08 14:06:33,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 134 transitions, 485 flow [2025-02-08 14:06:33,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:33,371 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 239 flow [2025-02-08 14:06:33,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2025-02-08 14:06:33,374 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 9 predicate places. [2025-02-08 14:06:33,374 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 239 flow [2025-02-08 14:06:33,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 14:06:33,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:33,375 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:33,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:06:33,375 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:33,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash 179532218, now seen corresponding path program 1 times [2025-02-08 14:06:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:33,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101373719] [2025-02-08 14:06:33,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:33,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:06:33,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:06:33,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:33,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:33,565 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 14:06:33,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:33,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101373719] [2025-02-08 14:06:33,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101373719] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:33,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997648504] [2025-02-08 14:06:33,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:33,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:33,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:33,568 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 14:06:33,573 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 14:06:33,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:06:33,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:06:33,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:33,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:33,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:06:33,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:33,722 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 14:06:33,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:33,821 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 14:06:33,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997648504] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:33,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-08 14:06:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518879433] [2025-02-08 14:06:33,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:33,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:06:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:33,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:06:33,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:06:33,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 117 [2025-02-08 14:06:33,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 239 flow. Second operand has 18 states, 18 states have (on average 49.22222222222222) internal successors, (886), 18 states have internal predecessors, (886), 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 14:06:33,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:33,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 117 [2025-02-08 14:06:33,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:34,173 INFO L124 PetriNetUnfolderBase]: 439/1414 cut-off events. [2025-02-08 14:06:34,174 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-02-08 14:06:34,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1414 events. 439/1414 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9458 event pairs, 396 based on Foata normal form. 4/1273 useless extension candidates. Maximal degree in co-relation 2292. Up to 857 conditions per place. [2025-02-08 14:06:34,181 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 44 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2025-02-08 14:06:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 105 transitions, 405 flow [2025-02-08 14:06:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:06:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:06:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 783 transitions. [2025-02-08 14:06:34,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2025-02-08 14:06:34,187 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 239 flow. Second operand 15 states and 783 transitions. [2025-02-08 14:06:34,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 105 transitions, 405 flow [2025-02-08 14:06:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 105 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:06:34,190 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 330 flow [2025-02-08 14:06:34,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=330, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2025-02-08 14:06:34,192 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2025-02-08 14:06:34,193 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 330 flow [2025-02-08 14:06:34,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 49.22222222222222) internal successors, (886), 18 states have internal predecessors, (886), 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 14:06:34,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:34,194 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:34,202 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 14:06:34,397 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 14:06:34,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:34,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash -437723462, now seen corresponding path program 2 times [2025-02-08 14:06:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:34,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985129424] [2025-02-08 14:06:34,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:34,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:34,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:06:34,440 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:06:34,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:06:34,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:34,763 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 14:06:34,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:34,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985129424] [2025-02-08 14:06:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985129424] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456858470] [2025-02-08 14:06:34,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:34,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:34,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:34,767 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 14:06:34,770 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 14:06:34,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 14:06:34,871 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:06:34,872 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:06:34,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:34,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 14:06:34,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:34,944 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 14:06:34,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:35,137 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 14:06:35,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456858470] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:35,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:35,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-08 14:06:35,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230378396] [2025-02-08 14:06:35,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:35,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:06:35,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:35,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:06:35,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:06:35,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 117 [2025-02-08 14:06:35,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 330 flow. Second operand has 23 states, 23 states have (on average 49.21739130434783) internal successors, (1132), 23 states have internal predecessors, (1132), 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 14:06:35,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:35,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 117 [2025-02-08 14:06:35,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:35,576 INFO L124 PetriNetUnfolderBase]: 439/1412 cut-off events. [2025-02-08 14:06:35,576 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2025-02-08 14:06:35,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 1412 events. 439/1412 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9430 event pairs, 396 based on Foata normal form. 3/1272 useless extension candidates. Maximal degree in co-relation 2262. Up to 855 conditions per place. [2025-02-08 14:06:35,585 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 44 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2025-02-08 14:06:35,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 111 transitions, 514 flow [2025-02-08 14:06:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 14:06:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 14:06:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1076 transitions. [2025-02-08 14:06:35,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379324379324379 [2025-02-08 14:06:35,590 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 330 flow. Second operand 21 states and 1076 transitions. [2025-02-08 14:06:35,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 111 transitions, 514 flow [2025-02-08 14:06:35,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 111 transitions, 504 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:06:35,594 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 431 flow [2025-02-08 14:06:35,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=431, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2025-02-08 14:06:35,595 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 43 predicate places. [2025-02-08 14:06:35,595 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 431 flow [2025-02-08 14:06:35,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.21739130434783) internal successors, (1132), 23 states have internal predecessors, (1132), 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 14:06:35,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:35,596 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:35,605 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 14:06:35,796 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 14:06:35,796 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-02-08 14:06:35,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash -376919178, now seen corresponding path program 3 times [2025-02-08 14:06:35,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:35,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44376847] [2025-02-08 14:06:35,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:06:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:35,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-02-08 14:06:35,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:06:35,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 14:06:35,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:35,869 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:06:35,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 14:06:35,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:06:35,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:35,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:06:35,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:06:35,916 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:06:35,919 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2025-02-08 14:06:35,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2025-02-08 14:06:35,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2025-02-08 14:06:35,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:06:35,922 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-02-08 14:06:35,924 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:06:35,924 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:06:35,959 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:06:35,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 166 transitions, 348 flow [2025-02-08 14:06:35,990 INFO L124 PetriNetUnfolderBase]: 59/285 cut-off events. [2025-02-08 14:06:35,990 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:06:35,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 285 events. 59/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1354 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 169. Up to 12 conditions per place. [2025-02-08 14:06:35,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 166 transitions, 348 flow [2025-02-08 14:06:35,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 166 transitions, 348 flow [2025-02-08 14:06:35,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:06:35,998 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;@39b85809, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:06:35,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-02-08 14:06:36,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:06:36,001 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:06:36,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:06:36,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:36,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:06:36,001 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:36,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 821682, now seen corresponding path program 1 times [2025-02-08 14:06:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032340] [2025-02-08 14:06:36,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:36,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:06:36,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:06:36,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:36,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:36,050 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 14:06:36,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:36,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032340] [2025-02-08 14:06:36,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032340] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:36,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:36,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613137856] [2025-02-08 14:06:36,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:36,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:36,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:36,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:36,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:06:36,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 166 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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 14:06:36,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:36,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:06:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:39,062 INFO L124 PetriNetUnfolderBase]: 17181/38042 cut-off events. [2025-02-08 14:06:39,063 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2025-02-08 14:06:39,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63774 conditions, 38042 events. 17181/38042 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 399827 event pairs, 15876 based on Foata normal form. 11806/45606 useless extension candidates. Maximal degree in co-relation 51805. Up to 25628 conditions per place. [2025-02-08 14:06:39,283 INFO L140 encePairwiseOnDemand]: 130/166 looper letters, 68 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2025-02-08 14:06:39,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 138 transitions, 434 flow [2025-02-08 14:06:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2025-02-08 14:06:39,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5602409638554217 [2025-02-08 14:06:39,285 INFO L175 Difference]: Start difference. First operand has 135 places, 166 transitions, 348 flow. Second operand 4 states and 372 transitions. [2025-02-08 14:06:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 138 transitions, 434 flow [2025-02-08 14:06:39,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:06:39,288 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 312 flow [2025-02-08 14:06:39,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2025-02-08 14:06:39,289 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 5 predicate places. [2025-02-08 14:06:39,289 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 312 flow [2025-02-08 14:06:39,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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 14:06:39,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:39,290 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:06:39,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:06:39,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:39,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1290361264, now seen corresponding path program 1 times [2025-02-08 14:06:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782771344] [2025-02-08 14:06:39,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:39,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:39,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:39,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:39,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:39,361 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 14:06:39,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:39,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782771344] [2025-02-08 14:06:39,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782771344] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:39,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133158980] [2025-02-08 14:06:39,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:39,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:39,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:39,365 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 14:06:39,367 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 14:06:39,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:06:39,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:06:39,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:39,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:39,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:06:39,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:39,479 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 14:06:39,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:06:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133158980] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:39,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:06:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:06:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596595033] [2025-02-08 14:06:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:39,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:39,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:39,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:06:39,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:06:39,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 138 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 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 14:06:39,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:06:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:41,721 INFO L124 PetriNetUnfolderBase]: 17181/38041 cut-off events. [2025-02-08 14:06:41,721 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2025-02-08 14:06:41,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63784 conditions, 38041 events. 17181/38041 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 399823 event pairs, 15876 based on Foata normal form. 1/33800 useless extension candidates. Maximal degree in co-relation 63765. Up to 25623 conditions per place. [2025-02-08 14:06:41,920 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 64 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2025-02-08 14:06:41,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 448 flow [2025-02-08 14:06:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 473 transitions. [2025-02-08 14:06:41,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4748995983935743 [2025-02-08 14:06:41,922 INFO L175 Difference]: Start difference. First operand has 140 places, 138 transitions, 312 flow. Second operand 6 states and 473 transitions. [2025-02-08 14:06:41,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 448 flow [2025-02-08 14:06:41,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 137 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:41,925 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 318 flow [2025-02-08 14:06:41,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2025-02-08 14:06:41,926 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2025-02-08 14:06:41,927 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 318 flow [2025-02-08 14:06:41,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 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 14:06:41,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:41,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:06:41,935 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 14:06:42,132 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 14:06:42,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:42,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1346492804, now seen corresponding path program 1 times [2025-02-08 14:06:42,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:42,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337876609] [2025-02-08 14:06:42,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:42,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:42,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:06:42,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:06:42,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:42,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:42,169 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 14:06:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:42,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337876609] [2025-02-08 14:06:42,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337876609] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:42,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:42,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:06:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185691805] [2025-02-08 14:06:42,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:42,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:06:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:42,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:06:42,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:06:42,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:06:42,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 14:06:42,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:42,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:06:42,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:44,716 INFO L124 PetriNetUnfolderBase]: 17181/38040 cut-off events. [2025-02-08 14:06:44,716 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-02-08 14:06:44,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63786 conditions, 38040 events. 17181/38040 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 399766 event pairs, 15876 based on Foata normal form. 1/33800 useless extension candidates. Maximal degree in co-relation 63761. Up to 25626 conditions per place. [2025-02-08 14:06:44,878 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 65 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2025-02-08 14:06:44,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 136 transitions, 452 flow [2025-02-08 14:06:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:06:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:06:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2025-02-08 14:06:44,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5401606425702812 [2025-02-08 14:06:44,880 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 318 flow. Second operand 3 states and 269 transitions. [2025-02-08 14:06:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 136 transitions, 452 flow [2025-02-08 14:06:44,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 136 transitions, 430 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-08 14:06:44,883 INFO L231 Difference]: Finished difference. Result has 138 places, 136 transitions, 300 flow [2025-02-08 14:06:44,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2025-02-08 14:06:44,885 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2025-02-08 14:06:44,885 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 300 flow [2025-02-08 14:06:44,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 14:06:44,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:44,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:44,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:06:44,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:44,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1193038404, now seen corresponding path program 1 times [2025-02-08 14:06:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315289219] [2025-02-08 14:06:44,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:44,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:44,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:44,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:44,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:44,947 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 14:06:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315289219] [2025-02-08 14:06:44,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315289219] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804129946] [2025-02-08 14:06:44,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:44,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:44,950 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 14:06:44,953 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 14:06:45,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:06:45,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:06:45,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:45,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:45,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:06:45,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:45,068 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 14:06:45,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:06:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804129946] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:45,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:06:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867523735] [2025-02-08 14:06:45,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:45,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:06:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:45,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:06:45,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:06:45,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:06:45,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 300 flow. Second operand has 10 states, 10 states have (on average 68.3) internal successors, (683), 10 states have internal predecessors, (683), 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 14:06:45,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:45,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:06:45,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:47,167 INFO L124 PetriNetUnfolderBase]: 17181/38044 cut-off events. [2025-02-08 14:06:47,167 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-02-08 14:06:47,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63789 conditions, 38044 events. 17181/38044 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 399711 event pairs, 15876 based on Foata normal form. 2/33806 useless extension candidates. Maximal degree in co-relation 63754. Up to 25624 conditions per place. [2025-02-08 14:06:47,374 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 65 selfloop transitions, 7 changer transitions 0/139 dead transitions. [2025-02-08 14:06:47,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 139 transitions, 459 flow [2025-02-08 14:06:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:06:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:06:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2025-02-08 14:06:47,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46729776247848537 [2025-02-08 14:06:47,377 INFO L175 Difference]: Start difference. First operand has 138 places, 136 transitions, 300 flow. Second operand 7 states and 543 transitions. [2025-02-08 14:06:47,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 139 transitions, 459 flow [2025-02-08 14:06:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:47,380 INFO L231 Difference]: Finished difference. Result has 144 places, 139 transitions, 326 flow [2025-02-08 14:06:47,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=144, PETRI_TRANSITIONS=139} [2025-02-08 14:06:47,381 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 9 predicate places. [2025-02-08 14:06:47,381 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 139 transitions, 326 flow [2025-02-08 14:06:47,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.3) internal successors, (683), 10 states have internal predecessors, (683), 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 14:06:47,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:47,382 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:47,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 14:06:47,582 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 14:06:47,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:47,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash 921342204, now seen corresponding path program 2 times [2025-02-08 14:06:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349231256] [2025-02-08 14:06:47,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:47,592 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 14:06:47,596 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-08 14:06:47,596 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:06:47,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:47,644 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 14:06:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349231256] [2025-02-08 14:06:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349231256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:47,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:47,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:47,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663670695] [2025-02-08 14:06:47,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:47,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:47,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:47,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:47,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2025-02-08 14:06:47,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 139 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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 14:06:47,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:47,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2025-02-08 14:06:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:50,520 INFO L124 PetriNetUnfolderBase]: 19363/42137 cut-off events. [2025-02-08 14:06:50,520 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2025-02-08 14:06:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71202 conditions, 42137 events. 19363/42137 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 442248 event pairs, 11718 based on Foata normal form. 19/37648 useless extension candidates. Maximal degree in co-relation 71162. Up to 28886 conditions per place. [2025-02-08 14:06:50,699 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 111 selfloop transitions, 3 changer transitions 0/178 dead transitions. [2025-02-08 14:06:50,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 178 transitions, 632 flow [2025-02-08 14:06:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:06:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:06:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2025-02-08 14:06:50,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662650602409639 [2025-02-08 14:06:50,701 INFO L175 Difference]: Start difference. First operand has 144 places, 139 transitions, 326 flow. Second operand 4 states and 376 transitions. [2025-02-08 14:06:50,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 178 transitions, 632 flow [2025-02-08 14:06:50,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 178 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:06:50,705 INFO L231 Difference]: Finished difference. Result has 147 places, 141 transitions, 346 flow [2025-02-08 14:06:50,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=147, PETRI_TRANSITIONS=141} [2025-02-08 14:06:50,706 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 12 predicate places. [2025-02-08 14:06:50,706 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 141 transitions, 346 flow [2025-02-08 14:06:50,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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 14:06:50,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:50,706 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:50,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:06:50,707 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:50,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash 491031247, now seen corresponding path program 1 times [2025-02-08 14:06:50,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:50,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245254162] [2025-02-08 14:06:50,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:50,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:06:50,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:06:50,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:50,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:50,853 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 14:06:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245254162] [2025-02-08 14:06:50,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245254162] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:06:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687147706] [2025-02-08 14:06:50,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:50,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:06:50,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:06:50,856 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 14:06:50,859 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 14:06:50,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:06:50,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:06:50,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:50,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:50,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:06:50,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:06:50,999 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 14:06:51,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:06:51,096 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 14:06:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687147706] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:06:51,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:06:51,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-08 14:06:51,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189174495] [2025-02-08 14:06:51,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:06:51,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:06:51,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:51,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:06:51,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:06:51,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:06:51,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 141 transitions, 346 flow. Second operand has 18 states, 18 states have (on average 68.27777777777777) internal successors, (1229), 18 states have internal predecessors, (1229), 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 14:06:51,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:51,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:06:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:53,843 INFO L124 PetriNetUnfolderBase]: 17179/38010 cut-off events. [2025-02-08 14:06:53,843 INFO L125 PetriNetUnfolderBase]: For 904/1611 co-relation queries the response was YES. [2025-02-08 14:06:53,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64586 conditions, 38010 events. 17179/38010 cut-off events. For 904/1611 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 398477 event pairs, 15876 based on Foata normal form. 21/34144 useless extension candidates. Maximal degree in co-relation 64509. Up to 25629 conditions per place. [2025-02-08 14:06:54,017 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 66 selfloop transitions, 15 changer transitions 0/149 dead transitions. [2025-02-08 14:06:54,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 149 transitions, 556 flow [2025-02-08 14:06:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:06:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:06:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1089 transitions. [2025-02-08 14:06:54,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43734939759036146 [2025-02-08 14:06:54,020 INFO L175 Difference]: Start difference. First operand has 147 places, 141 transitions, 346 flow. Second operand 15 states and 1089 transitions. [2025-02-08 14:06:54,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 149 transitions, 556 flow [2025-02-08 14:06:54,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 149 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:06:54,025 INFO L231 Difference]: Finished difference. Result has 164 places, 149 transitions, 441 flow [2025-02-08 14:06:54,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=441, PETRI_PLACES=164, PETRI_TRANSITIONS=149} [2025-02-08 14:06:54,026 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2025-02-08 14:06:54,026 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 149 transitions, 441 flow [2025-02-08 14:06:54,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 68.27777777777777) internal successors, (1229), 18 states have internal predecessors, (1229), 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 14:06:54,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:54,027 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:54,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:06:54,231 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 14:06:54,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:54,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1077879887, now seen corresponding path program 2 times [2025-02-08 14:06:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:54,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539276932] [2025-02-08 14:06:54,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:06:54,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:54,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-08 14:06:54,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 32 statements. [2025-02-08 14:06:54,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:06:54,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:54,308 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 14:06:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539276932] [2025-02-08 14:06:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539276932] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:54,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:54,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:06:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336945545] [2025-02-08 14:06:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:54,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:06:54,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:54,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:06:54,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:06:54,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2025-02-08 14:06:54,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 149 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 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 14:06:54,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:54,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2025-02-08 14:06:54,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:06:57,272 INFO L124 PetriNetUnfolderBase]: 18333/36589 cut-off events. [2025-02-08 14:06:57,272 INFO L125 PetriNetUnfolderBase]: For 1293/1293 co-relation queries the response was YES. [2025-02-08 14:06:57,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65784 conditions, 36589 events. 18333/36589 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 361541 event pairs, 1032 based on Foata normal form. 361/33717 useless extension candidates. Maximal degree in co-relation 65683. Up to 22371 conditions per place. [2025-02-08 14:06:57,438 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 187 selfloop transitions, 6 changer transitions 0/257 dead transitions. [2025-02-08 14:06:57,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 257 transitions, 1041 flow [2025-02-08 14:06:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:06:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:06:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 577 transitions. [2025-02-08 14:06:57,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793172690763052 [2025-02-08 14:06:57,440 INFO L175 Difference]: Start difference. First operand has 164 places, 149 transitions, 441 flow. Second operand 6 states and 577 transitions. [2025-02-08 14:06:57,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 257 transitions, 1041 flow [2025-02-08 14:06:57,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 257 transitions, 1031 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:06:57,446 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 439 flow [2025-02-08 14:06:57,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2025-02-08 14:06:57,447 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2025-02-08 14:06:57,447 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 439 flow [2025-02-08 14:06:57,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 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 14:06:57,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:06:57,447 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:06:57,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:06:57,447 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:06:57,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:06:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -945461134, now seen corresponding path program 1 times [2025-02-08 14:06:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:06:57,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513615809] [2025-02-08 14:06:57,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:06:57,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:06:57,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:06:57,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:06:57,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:06:57,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:06:57,501 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 14:06:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:06:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513615809] [2025-02-08 14:06:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513615809] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:06:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:06:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:06:57,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968589187] [2025-02-08 14:06:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:06:57,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:06:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:06:57,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:06:57,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:06:57,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2025-02-08 14:06:57,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 14:06:57,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:06:57,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2025-02-08 14:06:57,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:00,054 INFO L124 PetriNetUnfolderBase]: 17454/34999 cut-off events. [2025-02-08 14:07:00,054 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2025-02-08 14:07:00,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63731 conditions, 34999 events. 17454/34999 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 346124 event pairs, 1044 based on Foata normal form. 361/32676 useless extension candidates. Maximal degree in co-relation 63634. Up to 23327 conditions per place. [2025-02-08 14:07:00,236 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 150 selfloop transitions, 6 changer transitions 0/220 dead transitions. [2025-02-08 14:07:00,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 220 transitions, 893 flow [2025-02-08 14:07:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2025-02-08 14:07:00,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6114457831325302 [2025-02-08 14:07:00,238 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 439 flow. Second operand 4 states and 406 transitions. [2025-02-08 14:07:00,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 220 transitions, 893 flow [2025-02-08 14:07:00,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 220 transitions, 877 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 14:07:00,263 INFO L231 Difference]: Finished difference. Result has 162 places, 148 transitions, 439 flow [2025-02-08 14:07:00,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=439, PETRI_PLACES=162, PETRI_TRANSITIONS=148} [2025-02-08 14:07:00,263 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 27 predicate places. [2025-02-08 14:07:00,263 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 148 transitions, 439 flow [2025-02-08 14:07:00,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 14:07:00,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:00,264 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:00,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 14:07:00,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:07:00,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -19492006, now seen corresponding path program 1 times [2025-02-08 14:07:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:00,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189991005] [2025-02-08 14:07:00,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:00,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 14:07:00,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:07:00,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:00,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:00,722 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 14:07:00,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189991005] [2025-02-08 14:07:00,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189991005] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:00,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126014367] [2025-02-08 14:07:00,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:00,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:00,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:00,725 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 14:07:00,726 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 14:07:00,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 14:07:00,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:07:00,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:00,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:00,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 14:07:00,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:00,885 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 14:07:00,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:01,049 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 14:07:01,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126014367] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:01,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:01,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-08 14:07:01,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633966026] [2025-02-08 14:07:01,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:01,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:07:01,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:01,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:07:01,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:07:01,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:07:01,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 148 transitions, 439 flow. Second operand has 23 states, 23 states have (on average 68.43478260869566) internal successors, (1574), 23 states have internal predecessors, (1574), 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 14:07:01,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:01,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:07:01,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:03,761 INFO L124 PetriNetUnfolderBase]: 17179/37912 cut-off events. [2025-02-08 14:07:03,761 INFO L125 PetriNetUnfolderBase]: For 3251/3251 co-relation queries the response was YES. [2025-02-08 14:07:03,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65252 conditions, 37912 events. 17179/37912 cut-off events. For 3251/3251 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 396619 event pairs, 15876 based on Foata normal form. 3/34132 useless extension candidates. Maximal degree in co-relation 65121. Up to 25596 conditions per place. [2025-02-08 14:07:03,967 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2025-02-08 14:07:03,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 154 transitions, 669 flow [2025-02-08 14:07:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 14:07:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 14:07:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1496 transitions. [2025-02-08 14:07:03,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4291451520367183 [2025-02-08 14:07:03,970 INFO L175 Difference]: Start difference. First operand has 162 places, 148 transitions, 439 flow. Second operand 21 states and 1496 transitions. [2025-02-08 14:07:03,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 154 transitions, 669 flow [2025-02-08 14:07:03,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 661 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:07:03,976 INFO L231 Difference]: Finished difference. Result has 183 places, 154 transitions, 542 flow [2025-02-08 14:07:03,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=542, PETRI_PLACES=183, PETRI_TRANSITIONS=154} [2025-02-08 14:07:03,977 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 48 predicate places. [2025-02-08 14:07:03,977 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 154 transitions, 542 flow [2025-02-08 14:07:03,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 68.43478260869566) internal successors, (1574), 23 states have internal predecessors, (1574), 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 14:07:03,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:03,978 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:03,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:07:04,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 14:07:04,179 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:07:04,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -592864072, now seen corresponding path program 2 times [2025-02-08 14:07:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:04,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794775735] [2025-02-08 14:07:04,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:04,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-08 14:07:04,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-02-08 14:07:04,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:04,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:07:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794775735] [2025-02-08 14:07:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794775735] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:05,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:07:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077009882] [2025-02-08 14:07:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:05,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:07:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:05,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:07:05,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:07:05,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2025-02-08 14:07:05,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 154 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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 14:07:05,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:05,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2025-02-08 14:07:05,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:08,929 INFO L124 PetriNetUnfolderBase]: 21232/45353 cut-off events. [2025-02-08 14:07:08,930 INFO L125 PetriNetUnfolderBase]: For 2568/2568 co-relation queries the response was YES. [2025-02-08 14:07:09,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79434 conditions, 45353 events. 21232/45353 cut-off events. For 2568/2568 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 478427 event pairs, 7360 based on Foata normal form. 544/41572 useless extension candidates. Maximal degree in co-relation 79274. Up to 23250 conditions per place. [2025-02-08 14:07:09,209 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 238 selfloop transitions, 11 changer transitions 0/313 dead transitions. [2025-02-08 14:07:09,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 313 transitions, 1428 flow [2025-02-08 14:07:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:07:09,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:07:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 631 transitions. [2025-02-08 14:07:09,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6335341365461847 [2025-02-08 14:07:09,211 INFO L175 Difference]: Start difference. First operand has 183 places, 154 transitions, 542 flow. Second operand 6 states and 631 transitions. [2025-02-08 14:07:09,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 313 transitions, 1428 flow [2025-02-08 14:07:09,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 313 transitions, 1385 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-02-08 14:07:09,218 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 582 flow [2025-02-08 14:07:09,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=582, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2025-02-08 14:07:09,218 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 44 predicate places. [2025-02-08 14:07:09,218 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 582 flow [2025-02-08 14:07:09,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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 14:07:09,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:09,219 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:07:09,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 14:07:09,219 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-02-08 14:07:09,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1371570949, now seen corresponding path program 1 times [2025-02-08 14:07:09,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:09,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901671842] [2025-02-08 14:07:09,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:09,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:09,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 14:07:09,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:07:09,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:09,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:07:09,243 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:07:09,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 14:07:09,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:07:09,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:09,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:07:09,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:07:09,265 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:07:09,265 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2025-02-08 14:07:09,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2025-02-08 14:07:09,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2025-02-08 14:07:09,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2025-02-08 14:07:09,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 14:07:09,268 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:07:09,268 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:07:09,268 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:07:09,296 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:07:09,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 215 transitions, 457 flow [2025-02-08 14:07:09,329 INFO L124 PetriNetUnfolderBase]: 86/422 cut-off events. [2025-02-08 14:07:09,329 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-08 14:07:09,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 422 events. 86/422 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2145 event pairs, 1 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2025-02-08 14:07:09,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 215 transitions, 457 flow [2025-02-08 14:07:09,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 215 transitions, 457 flow [2025-02-08 14:07:09,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:07:09,343 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;@39b85809, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:07:09,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-02-08 14:07:09,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:07:09,346 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:07:09,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:07:09,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:09,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:07:09,346 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-02-08 14:07:09,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1035177, now seen corresponding path program 1 times [2025-02-08 14:07:09,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:09,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954349856] [2025-02-08 14:07:09,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:09,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:07:09,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:07:09,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:09,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:09,377 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 14:07:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954349856] [2025-02-08 14:07:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954349856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424083862] [2025-02-08 14:07:09,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:09,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:09,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:09,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:09,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 215 [2025-02-08 14:07:09,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 215 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 14:07:09,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:09,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 215 [2025-02-08 14:07:09,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand