./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --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/weaver/chl-chromosome-symm.wvr.c -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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:07:38,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:07:38,630 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:07:38,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:07:38,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:07:38,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:07:38,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:07:38,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:07:38,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:07:38,649 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:07:38,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:07:38,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:07:38,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:07:38,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:07:38,649 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:07:38,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:07:38,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:07:38,651 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:38,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:07:38,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:07:38,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:07:38,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:07:38,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:07:38,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:07:38,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:07:38,652 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 -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2025-02-08 14:07:38,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:07:38,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:07:38,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:07:38,891 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:07:38,891 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:07:38,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2025-02-08 14:07:40,075 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7c663dfe/33e696e0422b42e8a14ee32bbb4a76f7/FLAG094aef0a6 [2025-02-08 14:07:40,364 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:07:40,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2025-02-08 14:07:40,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7c663dfe/33e696e0422b42e8a14ee32bbb4a76f7/FLAG094aef0a6 [2025-02-08 14:07:40,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7c663dfe/33e696e0422b42e8a14ee32bbb4a76f7 [2025-02-08 14:07:40,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:07:40,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:07:40,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:07:40,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:07:40,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:07:40,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1a0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40, skipping insertion in model container [2025-02-08 14:07:40,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:07:40,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:07:40,850 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:07:40,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:07:40,893 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:07:40,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40 WrapperNode [2025-02-08 14:07:40,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:07:40,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:07:40,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:07:40,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:07:40,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,924 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 217 [2025-02-08 14:07:40,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:07:40,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:07:40,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:07:40,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:07:40,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,950 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 14:07:40,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,955 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:07:40,959 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:07:40,959 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:07:40,959 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:07:40,960 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (1/1) ... [2025-02-08 14:07:40,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:40,982 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 14:07:40,985 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 14:07:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:07:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:07:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:07:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:07:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:07:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:07:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:07:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:07:41,005 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 14:07:41,088 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:07:41,089 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:07:41,193 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56: havoc #t~post4#1; [2025-02-08 14:07:41,193 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-1: assume 1 + #t~post4#1 <= 2147483647; [2025-02-08 14:07:41,193 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-1: assume !(1 + #t~post4#1 <= 2147483647); [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-2: ~i~0#1 := 1 + #t~post4#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-3: assume 1 + #t~post4#1 >= -2147483648; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-3: assume !(1 + #t~post4#1 >= -2147483648); [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-4: #t~post4#1 := ~i~0#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54: havoc #t~ret3#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-1: havoc #t~mem2#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-2: havoc #t~mem1#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-3: ~result_5~0 := #t~ret3#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret3#1 && #t~ret3#1 <= 2147483647; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-6: havoc minus_#t~short20#1, minus_#t~short21#1, minus_~a#1, minus_~b#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54-7: #t~ret3#1 := minus_#res#1; [2025-02-08 14:07:41,194 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L55: ~stop~0#1 := (if 0 == (if 0 != ~result_5~0 then 1 else 0) then 0 else 1); [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-3: ~result_8~0 := #t~ret7#1; [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret7#1 && #t~ret7#1 <= 2147483647; [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-6: havoc minus_#t~short20#1, minus_#t~short21#1, minus_~a#1, minus_~b#1; [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-7: #t~ret7#1 := minus_#res#1; [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69: ~stop~1#1 := (if 0 == (if 0 != ~result_8~0 then 1 else 0) then 0 else 1); [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70: havoc #t~post8#1; [2025-02-08 14:07:41,257 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70-1: assume 1 + #t~post8#1 <= 2147483647; [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70-1: assume !(1 + #t~post8#1 <= 2147483647); [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70-2: ~i~1#1 := 1 + #t~post8#1; [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70-3: assume 1 + #t~post8#1 >= -2147483648; [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70-3: assume !(1 + #t~post8#1 >= -2147483648); [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70-4: #t~post8#1 := ~i~1#1; [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68: havoc #t~ret7#1; [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-1: havoc #t~mem6#1; [2025-02-08 14:07:41,258 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L68-2: havoc #t~mem5#1; [2025-02-08 14:07:41,354 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:07:41,354 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:07:41,530 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:07:41,530 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:07:41,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:41 BoogieIcfgContainer [2025-02-08 14:07:41,530 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:07:41,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:07:41,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:07:41,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:07:41,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:07:40" (1/3) ... [2025-02-08 14:07:41,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dbef92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:07:41, skipping insertion in model container [2025-02-08 14:07:41,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:40" (2/3) ... [2025-02-08 14:07:41,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dbef92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:07:41, skipping insertion in model container [2025-02-08 14:07:41,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:41" (3/3) ... [2025-02-08 14:07:41,536 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2025-02-08 14:07:41,547 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:07:41,549 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-symm.wvr.c that has 3 procedures, 59 locations, 1 initial locations, 4 loop locations, and 20 error locations. [2025-02-08 14:07:41,549 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:07:41,595 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:07:41,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 142 flow [2025-02-08 14:07:41,652 INFO L124 PetriNetUnfolderBase]: 6/62 cut-off events. [2025-02-08 14:07:41,653 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:07:41,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 6/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 200 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-02-08 14:07:41,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 64 transitions, 142 flow [2025-02-08 14:07:41,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 60 transitions, 129 flow [2025-02-08 14:07:41,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:07:41,678 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;@48ecdefd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:07:41,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-02-08 14:07:41,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:07:41,710 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:07:41,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:07:41,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:41,711 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:07:41,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:41,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash 615286, now seen corresponding path program 1 times [2025-02-08 14:07:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341599984] [2025-02-08 14:07:41,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:41,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:07:41,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:07:41,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:41,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:41,918 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 14:07:41,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:41,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341599984] [2025-02-08 14:07:41,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341599984] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:41,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:41,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:41,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629383332] [2025-02-08 14:07:41,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:41,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:41,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:41,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:41,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:42,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2025-02-08 14:07:42,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 14:07:42,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:42,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2025-02-08 14:07:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:42,247 INFO L124 PetriNetUnfolderBase]: 246/683 cut-off events. [2025-02-08 14:07:42,247 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-02-08 14:07:42,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 683 events. 246/683 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4351 event pairs, 172 based on Foata normal form. 2/519 useless extension candidates. Maximal degree in co-relation 1029. Up to 402 conditions per place. [2025-02-08 14:07:42,256 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 31 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2025-02-08 14:07:42,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 217 flow [2025-02-08 14:07:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-02-08 14:07:42,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2025-02-08 14:07:42,278 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 129 flow. Second operand 4 states and 162 transitions. [2025-02-08 14:07:42,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 217 flow [2025-02-08 14:07:42,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:07:42,292 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 184 flow [2025-02-08 14:07:42,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2025-02-08 14:07:42,303 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2025-02-08 14:07:42,303 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 184 flow [2025-02-08 14:07:42,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 14:07:42,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:42,303 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:07:42,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:07:42,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:42,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1150659253, now seen corresponding path program 1 times [2025-02-08 14:07:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480488365] [2025-02-08 14:07:42,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:42,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:07:42,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:07:42,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:42,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:42,461 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 14:07:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480488365] [2025-02-08 14:07:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480488365] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192234575] [2025-02-08 14:07:42,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:42,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:42,465 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 14:07:42,467 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 14:07:42,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:07:42,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:07:42,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:42,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:42,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:07:42,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:42,561 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 14:07:42,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:07:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192234575] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:42,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:07:42,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:07:42,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959577909] [2025-02-08 14:07:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:42,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:07:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:42,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:07:42,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:07:42,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2025-02-08 14:07:42,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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 14:07:42,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:42,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2025-02-08 14:07:42,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:42,725 INFO L124 PetriNetUnfolderBase]: 246/681 cut-off events. [2025-02-08 14:07:42,725 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-08 14:07:42,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 681 events. 246/681 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4342 event pairs, 172 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 1077. Up to 392 conditions per place. [2025-02-08 14:07:42,731 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 24 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2025-02-08 14:07:42,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 248 flow [2025-02-08 14:07:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:07:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:07:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2025-02-08 14:07:42,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2025-02-08 14:07:42,734 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 184 flow. Second operand 6 states and 218 transitions. [2025-02-08 14:07:42,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 248 flow [2025-02-08 14:07:42,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:07:42,736 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 200 flow [2025-02-08 14:07:42,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2025-02-08 14:07:42,737 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2025-02-08 14:07:42,737 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 200 flow [2025-02-08 14:07:42,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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 14:07:42,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:42,738 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:07:42,745 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 14:07:42,943 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 14:07:42,943 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:42,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1310699021, now seen corresponding path program 1 times [2025-02-08 14:07:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:42,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620330804] [2025-02-08 14:07:42,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:42,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:42,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:07:42,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:07:42,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:42,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620330804] [2025-02-08 14:07:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620330804] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979214757] [2025-02-08 14:07:43,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:43,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:43,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:43,039 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 14:07:43,041 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 14:07:43,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:07:43,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:07:43,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:43,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:07:43,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:43,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:07:43,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979214757] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:43,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:43,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:07:43,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208324595] [2025-02-08 14:07:43,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:43,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:07:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:43,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:07:43,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:07:43,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2025-02-08 14:07:43,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 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 14:07:43,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:43,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2025-02-08 14:07:43,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:43,322 INFO L124 PetriNetUnfolderBase]: 252/705 cut-off events. [2025-02-08 14:07:43,323 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-02-08 14:07:43,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 705 events. 252/705 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4591 event pairs, 172 based on Foata normal form. 6/547 useless extension candidates. Maximal degree in co-relation 1079. Up to 403 conditions per place. [2025-02-08 14:07:43,326 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 29 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2025-02-08 14:07:43,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 422 flow [2025-02-08 14:07:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:07:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:07:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2025-02-08 14:07:43,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 14:07:43,329 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 200 flow. Second operand 10 states and 360 transitions. [2025-02-08 14:07:43,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 422 flow [2025-02-08 14:07:43,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 364 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:07:43,331 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 340 flow [2025-02-08 14:07:43,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=340, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2025-02-08 14:07:43,332 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2025-02-08 14:07:43,332 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 340 flow [2025-02-08 14:07:43,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 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 14:07:43,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:43,332 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:43,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:07:43,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:43,536 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:43,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash -363099083, now seen corresponding path program 1 times [2025-02-08 14:07:43,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:43,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824704125] [2025-02-08 14:07:43,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:43,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:07:43,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:07:43,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:43,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,622 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 14:07:43,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824704125] [2025-02-08 14:07:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824704125] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937769307] [2025-02-08 14:07:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:43,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:07:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:43,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:07:43,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:07:43,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 64 [2025-02-08 14:07:43,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 14:07:43,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:43,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 64 [2025-02-08 14:07:43,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:43,704 INFO L124 PetriNetUnfolderBase]: 250/703 cut-off events. [2025-02-08 14:07:43,705 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-02-08 14:07:43,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 703 events. 250/703 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4479 event pairs, 172 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 1159. Up to 412 conditions per place. [2025-02-08 14:07:43,708 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 43 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2025-02-08 14:07:43,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 430 flow [2025-02-08 14:07:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:07:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:07:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2025-02-08 14:07:43,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-02-08 14:07:43,709 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 340 flow. Second operand 3 states and 136 transitions. [2025-02-08 14:07:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 430 flow [2025-02-08 14:07:43,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 400 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-08 14:07:43,711 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 314 flow [2025-02-08 14:07:43,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2025-02-08 14:07:43,712 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2025-02-08 14:07:43,712 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 314 flow [2025-02-08 14:07:43,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 14:07:43,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:43,712 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:43,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:07:43,712 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:43,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash 708245419, now seen corresponding path program 1 times [2025-02-08 14:07:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757668498] [2025-02-08 14:07:43,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:43,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:07:43,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:07:43,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:43,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:07:43,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:43,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757668498] [2025-02-08 14:07:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757668498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:43,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:07:43,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510819564] [2025-02-08 14:07:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:43,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:43,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:43,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:43,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:43,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2025-02-08 14:07:43,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 14:07:43,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:43,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2025-02-08 14:07:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:44,008 INFO L124 PetriNetUnfolderBase]: 508/1193 cut-off events. [2025-02-08 14:07:44,008 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-02-08 14:07:44,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 1193 events. 508/1193 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7959 event pairs, 179 based on Foata normal form. 40/988 useless extension candidates. Maximal degree in co-relation 2084. Up to 373 conditions per place. [2025-02-08 14:07:44,013 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 77 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2025-02-08 14:07:44,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 530 flow [2025-02-08 14:07:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2025-02-08 14:07:44,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2025-02-08 14:07:44,014 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 314 flow. Second operand 4 states and 174 transitions. [2025-02-08 14:07:44,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 530 flow [2025-02-08 14:07:44,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:07:44,016 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 326 flow [2025-02-08 14:07:44,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2025-02-08 14:07:44,017 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2025-02-08 14:07:44,017 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 326 flow [2025-02-08 14:07:44,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 14:07:44,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:44,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:44,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:07:44,017 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:44,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash 480772090, now seen corresponding path program 1 times [2025-02-08 14:07:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259481620] [2025-02-08 14:07:44,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:44,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:07:44,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:07:44,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:44,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:44,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259481620] [2025-02-08 14:07:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259481620] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:44,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764361160] [2025-02-08 14:07:44,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:44,186 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 14:07:44,191 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 14:07:44,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:07:44,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:07:44,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:44,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:44,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:07:44,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:44,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:07:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764361160] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:44,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:44,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:07:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791842424] [2025-02-08 14:07:44,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:44,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 14:07:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:44,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 14:07:44,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:07:44,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2025-02-08 14:07:44,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 326 flow. Second operand has 11 states, 11 states have (on average 31.636363636363637) internal successors, (348), 11 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 14:07:44,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:44,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2025-02-08 14:07:44,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:44,563 INFO L124 PetriNetUnfolderBase]: 326/948 cut-off events. [2025-02-08 14:07:44,563 INFO L125 PetriNetUnfolderBase]: For 181/200 co-relation queries the response was YES. [2025-02-08 14:07:44,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 948 events. 326/948 cut-off events. For 181/200 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6464 event pairs, 253 based on Foata normal form. 15/780 useless extension candidates. Maximal degree in co-relation 1657. Up to 538 conditions per place. [2025-02-08 14:07:44,568 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 28 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2025-02-08 14:07:44,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 404 flow [2025-02-08 14:07:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:07:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:07:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2025-02-08 14:07:44,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5669642857142857 [2025-02-08 14:07:44,569 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 326 flow. Second operand 7 states and 254 transitions. [2025-02-08 14:07:44,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 404 flow [2025-02-08 14:07:44,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:07:44,571 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 348 flow [2025-02-08 14:07:44,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=348, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2025-02-08 14:07:44,576 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 21 predicate places. [2025-02-08 14:07:44,576 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 348 flow [2025-02-08 14:07:44,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.636363636363637) internal successors, (348), 11 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 14:07:44,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:44,577 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:07:44,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:07:44,777 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 14:07:44,777 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:44,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash 970958380, now seen corresponding path program 2 times [2025-02-08 14:07:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:44,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612872038] [2025-02-08 14:07:44,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:44,786 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:07:44,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:07:44,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:44,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:07:44,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612872038] [2025-02-08 14:07:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612872038] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469491139] [2025-02-08 14:07:44,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:44,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:44,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:44,833 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 14:07:44,839 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 14:07:44,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:07:44,883 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:07:44,883 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:07:44,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:44,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:07:44,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:07:44,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:07:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469491139] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:44,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-02-08 14:07:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864191924] [2025-02-08 14:07:44,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:44,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:07:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:44,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:07:44,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:07:44,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2025-02-08 14:07:44,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 14:07:44,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:44,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2025-02-08 14:07:44,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:45,080 INFO L124 PetriNetUnfolderBase]: 326/946 cut-off events. [2025-02-08 14:07:45,080 INFO L125 PetriNetUnfolderBase]: For 211/230 co-relation queries the response was YES. [2025-02-08 14:07:45,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 946 events. 326/946 cut-off events. For 211/230 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6476 event pairs, 253 based on Foata normal form. 13/777 useless extension candidates. Maximal degree in co-relation 1669. Up to 532 conditions per place. [2025-02-08 14:07:45,085 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 24 selfloop transitions, 23 changer transitions 0/75 dead transitions. [2025-02-08 14:07:45,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 422 flow [2025-02-08 14:07:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2025-02-08 14:07:45,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2025-02-08 14:07:45,086 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 348 flow. Second operand 4 states and 150 transitions. [2025-02-08 14:07:45,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 422 flow [2025-02-08 14:07:45,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 385 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-02-08 14:07:45,088 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 337 flow [2025-02-08 14:07:45,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2025-02-08 14:07:45,089 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2025-02-08 14:07:45,089 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 337 flow [2025-02-08 14:07:45,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 14:07:45,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:45,089 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:45,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:07:45,289 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 14:07:45,290 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:45,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash -941854854, now seen corresponding path program 2 times [2025-02-08 14:07:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:45,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271077287] [2025-02-08 14:07:45,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:45,302 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 14:07:45,322 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:07:45,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:07:45,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:07:45,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271077287] [2025-02-08 14:07:45,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271077287] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442097057] [2025-02-08 14:07:45,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:07:45,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:45,484 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 14:07:45,488 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 14:07:45,536 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 14:07:45,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:07:45,557 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:07:45,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:45,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:07:45,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:07:45,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:07:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:07:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442097057] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:07:45,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:07:45,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-02-08 14:07:45,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606461567] [2025-02-08 14:07:45,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:07:45,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:07:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:45,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:07:45,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:07:45,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2025-02-08 14:07:45,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 337 flow. Second operand has 23 states, 23 states have (on average 31.304347826086957) internal successors, (720), 23 states have internal predecessors, (720), 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 14:07:45,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:45,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2025-02-08 14:07:45,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:46,034 INFO L124 PetriNetUnfolderBase]: 324/946 cut-off events. [2025-02-08 14:07:46,035 INFO L125 PetriNetUnfolderBase]: For 207/226 co-relation queries the response was YES. [2025-02-08 14:07:46,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 946 events. 324/946 cut-off events. For 207/226 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6413 event pairs, 253 based on Foata normal form. 15/780 useless extension candidates. Maximal degree in co-relation 1594. Up to 533 conditions per place. [2025-02-08 14:07:46,038 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 25 selfloop transitions, 22 changer transitions 0/75 dead transitions. [2025-02-08 14:07:46,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 438 flow [2025-02-08 14:07:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 14:07:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 14:07:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 380 transitions. [2025-02-08 14:07:46,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5397727272727273 [2025-02-08 14:07:46,039 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 337 flow. Second operand 11 states and 380 transitions. [2025-02-08 14:07:46,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 438 flow [2025-02-08 14:07:46,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:07:46,041 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 358 flow [2025-02-08 14:07:46,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=358, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2025-02-08 14:07:46,042 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2025-02-08 14:07:46,042 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 358 flow [2025-02-08 14:07:46,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 31.304347826086957) internal successors, (720), 23 states have internal predecessors, (720), 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 14:07:46,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:46,042 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:46,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 14:07:46,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:46,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:07:46,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1110626042, now seen corresponding path program 3 times [2025-02-08 14:07:46,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:46,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598446561] [2025-02-08 14:07:46,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:07:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:46,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-02-08 14:07:46,304 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:07:46,304 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 14:07:46,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 14:07:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598446561] [2025-02-08 14:07:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598446561] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:07:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816803373] [2025-02-08 14:07:47,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:07:47,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:07:47,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:47,534 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 14:07:47,535 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 14:07:47,588 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-02-08 14:07:47,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 14:07:47,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 14:07:47,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:47,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-08 14:07:47,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:07:47,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 14:07:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 14:07:47,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-08 14:07:47,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 14:07:47,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-08 14:07:47,940 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-02-08 14:07:47,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-02-08 14:07:48,103 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-02-08 14:07:48,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2025-02-08 14:07:48,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 14:07:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 14:07:48,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:07,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2025-02-08 14:09:07,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6678 treesize of output 6646 [2025-02-08 14:09:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 32 refuted. 1 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 14:09:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816803373] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:07,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:07,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 42 [2025-02-08 14:09:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113235341] [2025-02-08 14:09:07,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:07,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 14:09:07,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:07,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 14:09:07,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1498, Unknown=23, NotChecked=0, Total=1806 [2025-02-08 14:09:09,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-08 14:09:13,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-08 14:09:13,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2025-02-08 14:09:13,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 358 flow. Second operand has 43 states, 43 states have (on average 20.72093023255814) internal successors, (891), 43 states have internal predecessors, (891), 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 14:09:13,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:13,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2025-02-08 14:09:13,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:14,546 INFO L124 PetriNetUnfolderBase]: 715/1319 cut-off events. [2025-02-08 14:09:14,546 INFO L125 PetriNetUnfolderBase]: For 208/212 co-relation queries the response was YES. [2025-02-08 14:09:14,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 1319 events. 715/1319 cut-off events. For 208/212 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7258 event pairs, 84 based on Foata normal form. 4/1152 useless extension candidates. Maximal degree in co-relation 2727. Up to 1019 conditions per place. [2025-02-08 14:09:14,552 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 56 selfloop transitions, 27 changer transitions 0/100 dead transitions. [2025-02-08 14:09:14,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 578 flow [2025-02-08 14:09:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 14:09:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 14:09:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2025-02-08 14:09:14,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3991477272727273 [2025-02-08 14:09:14,554 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 358 flow. Second operand 11 states and 281 transitions. [2025-02-08 14:09:14,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 578 flow [2025-02-08 14:09:14,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 546 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 14:09:14,557 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 378 flow [2025-02-08 14:09:14,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=378, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2025-02-08 14:09:14,559 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2025-02-08 14:09:14,559 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 378 flow [2025-02-08 14:09:14,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 20.72093023255814) internal successors, (891), 43 states have internal predecessors, (891), 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 14:09:14,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:14,559 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:14,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:09:14,764 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,SelfDestructingSolverStorable8 [2025-02-08 14:09:14,764 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:09:14,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash -178235297, now seen corresponding path program 1 times [2025-02-08 14:09:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211806360] [2025-02-08 14:09:14,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:14,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 14:09:14,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 14:09:14,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:14,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:14,842 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 14:09:14,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:14,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211806360] [2025-02-08 14:09:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211806360] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:14,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:09:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531741416] [2025-02-08 14:09:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:14,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:14,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:14,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:14,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2025-02-08 14:09:14,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 14:09:14,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:14,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2025-02-08 14:09:14,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:15,012 INFO L124 PetriNetUnfolderBase]: 650/1536 cut-off events. [2025-02-08 14:09:15,012 INFO L125 PetriNetUnfolderBase]: For 521/576 co-relation queries the response was YES. [2025-02-08 14:09:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3069 conditions, 1536 events. 650/1536 cut-off events. For 521/576 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10717 event pairs, 246 based on Foata normal form. 79/1365 useless extension candidates. Maximal degree in co-relation 2905. Up to 516 conditions per place. [2025-02-08 14:09:15,019 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 74 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2025-02-08 14:09:15,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 99 transitions, 618 flow [2025-02-08 14:09:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2025-02-08 14:09:15,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.671875 [2025-02-08 14:09:15,021 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 378 flow. Second operand 4 states and 172 transitions. [2025-02-08 14:09:15,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 99 transitions, 618 flow [2025-02-08 14:09:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 537 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-02-08 14:09:15,024 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 329 flow [2025-02-08 14:09:15,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2025-02-08 14:09:15,025 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 19 predicate places. [2025-02-08 14:09:15,025 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 329 flow [2025-02-08 14:09:15,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 14:09:15,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:15,026 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:15,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:09:15,026 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:09:15,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 69638767, now seen corresponding path program 1 times [2025-02-08 14:09:15,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:15,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120397928] [2025-02-08 14:09:15,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:15,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:15,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 14:09:15,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 14:09:15,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:15,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 14:09:15,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120397928] [2025-02-08 14:09:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120397928] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844520028] [2025-02-08 14:09:15,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:15,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:15,680 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 14:09:15,682 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 14:09:15,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 14:09:15,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 14:09:15,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:15,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:15,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-08 14:09:15,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:15,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 14:09:15,896 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:15,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-08 14:09:15,965 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:15,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-08 14:09:16,026 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:16,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-08 14:09:16,086 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:16,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-08 14:09:16,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-08 14:09:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 14:09:16,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:16,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2025-02-08 14:09:16,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2025-02-08 14:09:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-08 14:09:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844520028] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:16,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 34 [2025-02-08 14:09:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291137988] [2025-02-08 14:09:16,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:16,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-08 14:09:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:16,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-08 14:09:16,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 14:09:17,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2025-02-08 14:09:17,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 329 flow. Second operand has 35 states, 35 states have (on average 26.34285714285714) internal successors, (922), 35 states have internal predecessors, (922), 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 14:09:17,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:17,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2025-02-08 14:09:17,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:17,901 INFO L124 PetriNetUnfolderBase]: 585/1414 cut-off events. [2025-02-08 14:09:17,901 INFO L125 PetriNetUnfolderBase]: For 464/520 co-relation queries the response was YES. [2025-02-08 14:09:17,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 1414 events. 585/1414 cut-off events. For 464/520 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9701 event pairs, 119 based on Foata normal form. 61/1351 useless extension candidates. Maximal degree in co-relation 2881. Up to 779 conditions per place. [2025-02-08 14:09:17,907 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 48 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2025-02-08 14:09:17,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 551 flow [2025-02-08 14:09:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:09:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:09:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 444 transitions. [2025-02-08 14:09:17,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-08 14:09:17,910 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 329 flow. Second operand 15 states and 444 transitions. [2025-02-08 14:09:17,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 551 flow [2025-02-08 14:09:17,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 551 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:09:17,913 INFO L231 Difference]: Finished difference. Result has 93 places, 74 transitions, 379 flow [2025-02-08 14:09:17,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=379, PETRI_PLACES=93, PETRI_TRANSITIONS=74} [2025-02-08 14:09:17,917 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2025-02-08 14:09:17,917 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 74 transitions, 379 flow [2025-02-08 14:09:17,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 26.34285714285714) internal successors, (922), 35 states have internal predecessors, (922), 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 14:09:17,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:17,917 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:17,928 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 14:09:18,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:18,122 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-02-08 14:09:18,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1230326309, now seen corresponding path program 1 times [2025-02-08 14:09:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:18,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180361168] [2025-02-08 14:09:18,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:18,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 14:09:18,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:09:18,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:18,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:09:18,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180361168] [2025-02-08 14:09:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180361168] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54428204] [2025-02-08 14:09:18,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:18,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:18,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:18,918 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 14:09:18,923 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 14:09:18,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 14:09:18,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:09:19,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:19,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:19,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-08 14:09:19,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:19,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 14:09:19,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 14:09:19,109 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:19,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2025-02-08 14:09:19,153 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:19,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2025-02-08 14:09:19,219 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:19,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2025-02-08 14:09:19,293 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-02-08 14:09:19,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2025-02-08 14:09:19,327 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 14:09:19,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 14:09:19,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 14:09:19,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 14:09:19,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 14:09:19,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 14:09:19,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 14:09:19,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 14:09:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:09:19,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:19,547 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_308 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_308) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false [2025-02-08 14:09:19,582 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_308 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_146| Int)) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_146| v_ArrVal_308) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_146|) 0)))) is different from false