./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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/popl20-more-array-sum-alt2.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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:12:04,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:12:04,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:12:04,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:12:04,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:12:04,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:12:04,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:12:04,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:12:04,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:12:04,471 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:12:04,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:12:04,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:12:04,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:12:04,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:12:04,473 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:12:04,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:04,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:12:04,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:12:04,475 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 -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2025-02-08 14:12:04,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:12:04,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:12:04,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:12:04,736 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:12:04,736 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:12:04,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-02-08 14:12:05,902 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57df14850/d02a2182c6834376bb98ae9bbce343b8/FLAGb4c2b3f43 [2025-02-08 14:12:06,129 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:12:06,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-02-08 14:12:06,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57df14850/d02a2182c6834376bb98ae9bbce343b8/FLAGb4c2b3f43 [2025-02-08 14:12:06,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57df14850/d02a2182c6834376bb98ae9bbce343b8 [2025-02-08 14:12:06,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:12:06,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:12:06,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:06,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:12:06,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:12:06,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8e48f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06, skipping insertion in model container [2025-02-08 14:12:06,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:12:06,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:06,323 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:12:06,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:06,354 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:12:06,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06 WrapperNode [2025-02-08 14:12:06,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:06,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:06,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:12:06,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:12:06,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,390 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2025-02-08 14:12:06,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:06,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:12:06,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:12:06,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:12:06,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,420 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 14:12:06,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,428 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:12:06,432 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:12:06,432 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:12:06,432 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:12:06,433 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (1/1) ... [2025-02-08 14:12:06,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:06,472 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 14:12:06,476 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 14:12:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:12:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:12:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:12:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:12:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:12:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:12:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:12:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:12:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:12:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:12:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:12:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:12:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:12:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:12:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:12:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:12:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:12:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:12:06,498 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 14:12:06,586 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:12:06,588 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:12:06,721 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49: havoc #t~ret2#1; [2025-02-08 14:12:06,722 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49-1: havoc #t~mem1#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49-2: ~res1~0 := #t~ret2#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret2#1 && #t~ret2#1 <= 2147483647; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49-5: havoc plus_#t~short22#1, plus_#t~short23#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L49-6: #t~ret2#1 := plus_#res#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50: [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-1: havoc #t~post3#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-2: assume 1 + #t~post3#1 <= 2147483647; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-2: assume !(1 + #t~post3#1 <= 2147483647); [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-3: ~i~0#1 := 1 + #t~post3#1; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-4: assume 1 + #t~post3#1 >= -2147483648; [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-4: assume !(1 + #t~post3#1 >= -2147483648); [2025-02-08 14:12:06,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L47-5: #t~post3#1 := ~i~0#1; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L60: [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-1: havoc #t~post6#1; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-2: assume 1 + #t~post6#1 <= 2147483647; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-2: assume !(1 + #t~post6#1 <= 2147483647); [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-3: ~i~1#1 := 1 + #t~post6#1; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-4: assume 1 + #t~post6#1 >= -2147483648; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-4: assume !(1 + #t~post6#1 >= -2147483648); [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L57-5: #t~post6#1 := ~i~1#1; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59: havoc #t~ret5#1; [2025-02-08 14:12:06,794 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59-1: havoc #t~mem4#1; [2025-02-08 14:12:06,795 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59-2: ~res2~0 := #t~ret5#1; [2025-02-08 14:12:06,795 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret5#1 && #t~ret5#1 <= 2147483647; [2025-02-08 14:12:06,795 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:06,795 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59-5: havoc plus_#t~short22#1, plus_#t~short23#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:06,795 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L59-6: #t~ret5#1 := plus_#res#1; [2025-02-08 14:12:06,852 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69: havoc #t~ret8#1; [2025-02-08 14:12:06,852 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-1: havoc #t~mem7#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-2: ~res2~0 := #t~ret8#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret8#1 && #t~ret8#1 <= 2147483647; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-5: havoc plus_#t~short22#1, plus_#t~short23#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-6: #t~ret8#1 := plus_#res#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L70: [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-1: havoc #t~post9#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-2: assume 1 + #t~post9#1 <= 2147483647; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-2: assume !(1 + #t~post9#1 <= 2147483647); [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-3: ~i~2#1 := 1 + #t~post9#1; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-4: assume 1 + #t~post9#1 >= -2147483648; [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-4: assume !(1 + #t~post9#1 >= -2147483648); [2025-02-08 14:12:06,853 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67-5: #t~post9#1 := ~i~2#1; [2025-02-08 14:12:06,944 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:12:06,945 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:12:07,232 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L114 is not an error location. [2025-02-08 14:12:07,232 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L114 is not an error location. [2025-02-08 14:12:07,232 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L114 is not an error location. [2025-02-08 14:12:07,233 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:12:07,233 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:12:07,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:07 BoogieIcfgContainer [2025-02-08 14:12:07,233 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:12:07,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:12:07,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:12:07,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:12:07,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:12:06" (1/3) ... [2025-02-08 14:12:07,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db9115b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:07, skipping insertion in model container [2025-02-08 14:12:07,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:06" (2/3) ... [2025-02-08 14:12:07,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db9115b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:07, skipping insertion in model container [2025-02-08 14:12:07,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:07" (3/3) ... [2025-02-08 14:12:07,242 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2025-02-08 14:12:07,253 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:12:07,254 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 50 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-02-08 14:12:07,254 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:12:07,393 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:12:07,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 121 flow [2025-02-08 14:12:07,467 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2025-02-08 14:12:07,469 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:12:07,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 139 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-02-08 14:12:07,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 121 flow [2025-02-08 14:12:07,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 105 flow [2025-02-08 14:12:07,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:12:07,503 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;@16eb367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:12:07,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-02-08 14:12:07,506 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:12:07,506 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:12:07,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:12:07,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:07,507 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:12:07,507 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:07,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 650261, now seen corresponding path program 1 times [2025-02-08 14:12:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:07,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182229664] [2025-02-08 14:12:07,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:07,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:07,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:12:07,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:12:07,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:07,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:07,706 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 14:12:07,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:07,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182229664] [2025-02-08 14:12:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182229664] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:07,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:07,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515738313] [2025-02-08 14:12:07,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:07,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:07,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:07,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:07,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2025-02-08 14:12:07,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 14:12:07,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:07,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2025-02-08 14:12:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:08,358 INFO L124 PetriNetUnfolderBase]: 2536/3866 cut-off events. [2025-02-08 14:12:08,359 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2025-02-08 14:12:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7872 conditions, 3866 events. 2536/3866 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 25106 event pairs, 2534 based on Foata normal form. 1/2051 useless extension candidates. Maximal degree in co-relation 7389. Up to 3782 conditions per place. [2025-02-08 14:12:08,386 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 34 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2025-02-08 14:12:08,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 175 flow [2025-02-08 14:12:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2025-02-08 14:12:08,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37 [2025-02-08 14:12:08,397 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 105 flow. Second operand 4 states and 74 transitions. [2025-02-08 14:12:08,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 175 flow [2025-02-08 14:12:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:08,413 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 113 flow [2025-02-08 14:12:08,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2025-02-08 14:12:08,417 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2025-02-08 14:12:08,417 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 113 flow [2025-02-08 14:12:08,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 14:12:08,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:08,417 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:12:08,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:12:08,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:08,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2100231811, now seen corresponding path program 1 times [2025-02-08 14:12:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:08,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967507927] [2025-02-08 14:12:08,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:08,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:08,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:08,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:08,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:08,547 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 14:12:08,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967507927] [2025-02-08 14:12:08,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967507927] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:08,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:08,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:12:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698611550] [2025-02-08 14:12:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:08,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:12:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:08,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:12:08,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:12:08,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-08 14:12:08,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 14:12:08,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:08,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-08 14:12:08,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:09,264 INFO L124 PetriNetUnfolderBase]: 3789/5805 cut-off events. [2025-02-08 14:12:09,264 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-02-08 14:12:09,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11719 conditions, 5805 events. 3789/5805 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 37433 event pairs, 3263 based on Foata normal form. 0/3288 useless extension candidates. Maximal degree in co-relation 8738. Up to 4245 conditions per place. [2025-02-08 14:12:09,293 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 75 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2025-02-08 14:12:09,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 368 flow [2025-02-08 14:12:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:12:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:12:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-02-08 14:12:09,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484 [2025-02-08 14:12:09,296 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 113 flow. Second operand 5 states and 121 transitions. [2025-02-08 14:12:09,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 368 flow [2025-02-08 14:12:09,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:09,300 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 135 flow [2025-02-08 14:12:09,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2025-02-08 14:12:09,301 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2025-02-08 14:12:09,301 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 135 flow [2025-02-08 14:12:09,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 14:12:09,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:09,301 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:12:09,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:12:09,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:09,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:09,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2102340531, now seen corresponding path program 1 times [2025-02-08 14:12:09,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:09,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938260868] [2025-02-08 14:12:09,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:09,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:09,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:09,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:09,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:09,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:09,410 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 14:12:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938260868] [2025-02-08 14:12:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938260868] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13716944] [2025-02-08 14:12:09,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:09,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:09,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:09,413 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 14:12:09,414 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 14:12:09,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:09,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:09,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:09,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:09,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:09,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:09,531 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 14:12:09,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:12:09,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13716944] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:09,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:12:09,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:12:09,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219819848] [2025-02-08 14:12:09,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:09,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:12:09,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:09,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:12:09,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:12:09,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2025-02-08 14:12:09,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 14:12:09,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:09,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2025-02-08 14:12:09,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:10,155 INFO L124 PetriNetUnfolderBase]: 3469/5342 cut-off events. [2025-02-08 14:12:10,156 INFO L125 PetriNetUnfolderBase]: For 1156/1260 co-relation queries the response was YES. [2025-02-08 14:12:10,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 5342 events. 3469/5342 cut-off events. For 1156/1260 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 36290 event pairs, 3468 based on Foata normal form. 1/3017 useless extension candidates. Maximal degree in co-relation 8100. Up to 5221 conditions per place. [2025-02-08 14:12:10,185 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 32 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2025-02-08 14:12:10,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 209 flow [2025-02-08 14:12:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:12:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:12:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2025-02-08 14:12:10,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2025-02-08 14:12:10,186 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 135 flow. Second operand 6 states and 80 transitions. [2025-02-08 14:12:10,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 209 flow [2025-02-08 14:12:10,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:10,188 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 140 flow [2025-02-08 14:12:10,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-02-08 14:12:10,189 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2025-02-08 14:12:10,189 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 140 flow [2025-02-08 14:12:10,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 14:12:10,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:10,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:12:10,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:10,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:10,394 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:10,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -748046448, now seen corresponding path program 1 times [2025-02-08 14:12:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354256420] [2025-02-08 14:12:10,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:10,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:10,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:10,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:10,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:10,482 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 14:12:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:10,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354256420] [2025-02-08 14:12:10,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354256420] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:10,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000364792] [2025-02-08 14:12:10,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:10,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:10,487 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 14:12:10,490 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 14:12:10,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:10,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:10,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:10,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:10,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:10,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:10,587 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 14:12:10,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:10,626 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 14:12:10,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000364792] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:10,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:12:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584683672] [2025-02-08 14:12:10,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:12:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:10,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:12:10,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:12:10,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2025-02-08 14:12:10,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 140 flow. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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 14:12:10,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:10,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2025-02-08 14:12:10,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:11,122 INFO L124 PetriNetUnfolderBase]: 3472/5352 cut-off events. [2025-02-08 14:12:11,122 INFO L125 PetriNetUnfolderBase]: For 1181/1302 co-relation queries the response was YES. [2025-02-08 14:12:11,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11710 conditions, 5352 events. 3472/5352 cut-off events. For 1181/1302 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 36169 event pairs, 3468 based on Foata normal form. 3/3032 useless extension candidates. Maximal degree in co-relation 8084. Up to 5228 conditions per place. [2025-02-08 14:12:11,142 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 35 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2025-02-08 14:12:11,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 290 flow [2025-02-08 14:12:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:12:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:12:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2025-02-08 14:12:11,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.238 [2025-02-08 14:12:11,145 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 140 flow. Second operand 10 states and 119 transitions. [2025-02-08 14:12:11,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 290 flow [2025-02-08 14:12:11,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 244 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:11,147 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 192 flow [2025-02-08 14:12:11,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2025-02-08 14:12:11,147 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2025-02-08 14:12:11,147 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 192 flow [2025-02-08 14:12:11,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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 14:12:11,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:11,148 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:11,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:11,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:11,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:11,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash 273126875, now seen corresponding path program 1 times [2025-02-08 14:12:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:11,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782501163] [2025-02-08 14:12:11,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:11,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:11,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:12:11,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:12:11,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:11,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:11,463 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 14:12:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782501163] [2025-02-08 14:12:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782501163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:11,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:11,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:12:11,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283420940] [2025-02-08 14:12:11,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:11,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:12:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:11,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:12:11,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:12:11,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-08 14:12:11,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 14:12:11,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:11,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-08 14:12:11,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:11,900 INFO L124 PetriNetUnfolderBase]: 3190/4840 cut-off events. [2025-02-08 14:12:11,900 INFO L125 PetriNetUnfolderBase]: For 743/904 co-relation queries the response was YES. [2025-02-08 14:12:11,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10406 conditions, 4840 events. 3190/4840 cut-off events. For 743/904 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 30351 event pairs, 3063 based on Foata normal form. 0/2712 useless extension candidates. Maximal degree in co-relation 10370. Up to 4273 conditions per place. [2025-02-08 14:12:11,918 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 69 selfloop transitions, 5 changer transitions 4/82 dead transitions. [2025-02-08 14:12:11,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 425 flow [2025-02-08 14:12:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:12:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:12:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-08 14:12:11,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44 [2025-02-08 14:12:11,919 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 192 flow. Second operand 5 states and 110 transitions. [2025-02-08 14:12:11,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 425 flow [2025-02-08 14:12:11,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:11,921 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 206 flow [2025-02-08 14:12:11,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2025-02-08 14:12:11,922 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2025-02-08 14:12:11,922 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 206 flow [2025-02-08 14:12:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 14:12:11,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:11,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:11,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:12:11,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:11,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1610969527, now seen corresponding path program 1 times [2025-02-08 14:12:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:11,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862103472] [2025-02-08 14:12:11,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:11,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:12:11,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:12:11,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:11,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:12:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:12,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862103472] [2025-02-08 14:12:12,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862103472] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:12,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:12,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:12,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532037297] [2025-02-08 14:12:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:12,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:12,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:12,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:12,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:12,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 14:12:12,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 14:12:12,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:12,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 14:12:12,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:12,294 INFO L124 PetriNetUnfolderBase]: 2217/3510 cut-off events. [2025-02-08 14:12:12,294 INFO L125 PetriNetUnfolderBase]: For 1173/1320 co-relation queries the response was YES. [2025-02-08 14:12:12,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8165 conditions, 3510 events. 2217/3510 cut-off events. For 1173/1320 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 22387 event pairs, 2213 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 8127. Up to 3377 conditions per place. [2025-02-08 14:12:12,309 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 46 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2025-02-08 14:12:12,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 296 flow [2025-02-08 14:12:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:12:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:12:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-02-08 14:12:12,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-02-08 14:12:12,313 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 206 flow. Second operand 3 states and 60 transitions. [2025-02-08 14:12:12,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 296 flow [2025-02-08 14:12:12,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 52 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:12,318 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 199 flow [2025-02-08 14:12:12,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2025-02-08 14:12:12,319 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2025-02-08 14:12:12,320 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 199 flow [2025-02-08 14:12:12,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 14:12:12,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:12,321 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:12,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:12:12,321 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:12,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1610969531, now seen corresponding path program 1 times [2025-02-08 14:12:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:12,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309302588] [2025-02-08 14:12:12,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:12,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:12,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:12:12,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:12:12,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:12,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:12,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:12,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309302588] [2025-02-08 14:12:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309302588] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:12,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152957100] [2025-02-08 14:12:12,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:12,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:12,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:12,531 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 14:12:12,533 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 14:12:12,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:12:12,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:12:12,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:12,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:12,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 14:12:12,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:12,627 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 14:12:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:12,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:12,741 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 16 treesize of output 14 [2025-02-08 14:12:12,746 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 22 treesize of output 20 [2025-02-08 14:12:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:12,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152957100] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:12,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:12,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:12:12,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874301658] [2025-02-08 14:12:12,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:12,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 14:12:12,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:12,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 14:12:12,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:12:12,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 14:12:12,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 199 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 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 14:12:12,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:12,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 14:12:12,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:13,243 INFO L124 PetriNetUnfolderBase]: 1897/3092 cut-off events. [2025-02-08 14:12:13,244 INFO L125 PetriNetUnfolderBase]: For 1048/1138 co-relation queries the response was YES. [2025-02-08 14:12:13,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7264 conditions, 3092 events. 1897/3092 cut-off events. For 1048/1138 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 20559 event pairs, 933 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 7249. Up to 1398 conditions per place. [2025-02-08 14:12:13,258 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 68 selfloop transitions, 10 changer transitions 2/85 dead transitions. [2025-02-08 14:12:13,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 438 flow [2025-02-08 14:12:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:12:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:12:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2025-02-08 14:12:13,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2025-02-08 14:12:13,259 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 199 flow. Second operand 7 states and 135 transitions. [2025-02-08 14:12:13,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 438 flow [2025-02-08 14:12:13,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:13,263 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 216 flow [2025-02-08 14:12:13,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2025-02-08 14:12:13,263 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2025-02-08 14:12:13,263 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 216 flow [2025-02-08 14:12:13,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 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 14:12:13,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:13,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:13,270 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 14:12:13,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:13,468 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:13,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1610969530, now seen corresponding path program 1 times [2025-02-08 14:12:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:13,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693467482] [2025-02-08 14:12:13,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:13,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:12:13,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:12:13,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:13,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:13,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:13,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693467482] [2025-02-08 14:12:13,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693467482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:13,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828163727] [2025-02-08 14:12:13,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:13,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:13,697 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 14:12:13,699 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 14:12:13,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:12:13,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:12:13,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:13,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:13,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 14:12:13,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:13,787 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 14:12:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:13,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:13,883 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 14 treesize of output 12 [2025-02-08 14:12:13,886 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 18 treesize of output 16 [2025-02-08 14:12:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828163727] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:13,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-02-08 14:12:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440832239] [2025-02-08 14:12:13,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:13,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 14:12:13,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:13,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 14:12:13,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-08 14:12:13,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 14:12:13,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 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 14:12:13,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:13,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 14:12:13,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:14,321 INFO L124 PetriNetUnfolderBase]: 1577/2506 cut-off events. [2025-02-08 14:12:14,322 INFO L125 PetriNetUnfolderBase]: For 1665/1857 co-relation queries the response was YES. [2025-02-08 14:12:14,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 2506 events. 1577/2506 cut-off events. For 1665/1857 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 14976 event pairs, 898 based on Foata normal form. 0/1795 useless extension candidates. Maximal degree in co-relation 6323. Up to 982 conditions per place. [2025-02-08 14:12:14,332 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 67 selfloop transitions, 10 changer transitions 2/84 dead transitions. [2025-02-08 14:12:14,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 84 transitions, 453 flow [2025-02-08 14:12:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:12:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:12:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2025-02-08 14:12:14,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38285714285714284 [2025-02-08 14:12:14,337 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 216 flow. Second operand 7 states and 134 transitions. [2025-02-08 14:12:14,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 84 transitions, 453 flow [2025-02-08 14:12:14,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 436 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:14,340 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 217 flow [2025-02-08 14:12:14,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2025-02-08 14:12:14,342 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2025-02-08 14:12:14,342 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 217 flow [2025-02-08 14:12:14,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 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 14:12:14,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:14,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:14,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:14,543 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,SelfDestructingSolverStorable7 [2025-02-08 14:12:14,543 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:14,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash 467767843, now seen corresponding path program 1 times [2025-02-08 14:12:14,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:14,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281608961] [2025-02-08 14:12:14,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:14,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:14,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:12:14,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:12:14,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:14,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:14,626 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 14:12:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281608961] [2025-02-08 14:12:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281608961] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:14,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:14,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:12:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384941517] [2025-02-08 14:12:14,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:14,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:12:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:14,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:12:14,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:12:14,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-02-08 14:12:14,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 14:12:14,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:14,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-02-08 14:12:14,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:14,866 INFO L124 PetriNetUnfolderBase]: 1534/2381 cut-off events. [2025-02-08 14:12:14,866 INFO L125 PetriNetUnfolderBase]: For 1934/2170 co-relation queries the response was YES. [2025-02-08 14:12:14,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 2381 events. 1534/2381 cut-off events. For 1934/2170 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 13283 event pairs, 1491 based on Foata normal form. 0/1655 useless extension candidates. Maximal degree in co-relation 6060. Up to 2149 conditions per place. [2025-02-08 14:12:14,873 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 39 selfloop transitions, 2 changer transitions 22/67 dead transitions. [2025-02-08 14:12:14,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 399 flow [2025-02-08 14:12:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:12:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:12:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2025-02-08 14:12:14,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38 [2025-02-08 14:12:14,875 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 217 flow. Second operand 5 states and 95 transitions. [2025-02-08 14:12:14,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 399 flow [2025-02-08 14:12:14,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 379 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 14:12:14,877 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 179 flow [2025-02-08 14:12:14,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2025-02-08 14:12:14,878 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2025-02-08 14:12:14,879 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 179 flow [2025-02-08 14:12:14,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 14:12:14,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:14,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:14,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:12:14,879 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:14,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:14,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1992224605, now seen corresponding path program 1 times [2025-02-08 14:12:14,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:14,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106831774] [2025-02-08 14:12:14,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:14,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:12:14,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:12:14,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:14,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:15,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:15,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106831774] [2025-02-08 14:12:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106831774] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:15,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352798066] [2025-02-08 14:12:15,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:15,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:15,021 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 14:12:15,023 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 14:12:15,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:12:15,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:12:15,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:15,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:15,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 14:12:15,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:15,099 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 14:12:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:15,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:15,189 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 16 treesize of output 14 [2025-02-08 14:12:15,192 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 22 treesize of output 20 [2025-02-08 14:12:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:15,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352798066] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:15,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:15,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:12:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932266172] [2025-02-08 14:12:15,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:15,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 14:12:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:15,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 14:12:15,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:12:15,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 14:12:15,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 179 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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 14:12:15,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:15,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 14:12:15,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:15,433 INFO L124 PetriNetUnfolderBase]: 1093/1776 cut-off events. [2025-02-08 14:12:15,434 INFO L125 PetriNetUnfolderBase]: For 760/929 co-relation queries the response was YES. [2025-02-08 14:12:15,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 1776 events. 1093/1776 cut-off events. For 760/929 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 10670 event pairs, 264 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 4309. Up to 1225 conditions per place. [2025-02-08 14:12:15,440 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 44 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2025-02-08 14:12:15,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 324 flow [2025-02-08 14:12:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:12:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:12:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2025-02-08 14:12:15,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30857142857142855 [2025-02-08 14:12:15,441 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 179 flow. Second operand 7 states and 108 transitions. [2025-02-08 14:12:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 324 flow [2025-02-08 14:12:15,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 286 flow, removed 11 selfloop flow, removed 9 redundant places. [2025-02-08 14:12:15,444 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 167 flow [2025-02-08 14:12:15,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2025-02-08 14:12:15,444 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2025-02-08 14:12:15,444 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 167 flow [2025-02-08 14:12:15,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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 14:12:15,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:15,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:15,450 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 14:12:15,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 14:12:15,649 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:15,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1992224601, now seen corresponding path program 1 times [2025-02-08 14:12:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:15,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268021119] [2025-02-08 14:12:15,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:15,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:12:15,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:12:15,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:15,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:12:15,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268021119] [2025-02-08 14:12:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268021119] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:15,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:15,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:15,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367371767] [2025-02-08 14:12:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:15,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:15,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:15,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:15,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:15,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 14:12:15,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 14:12:15,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:15,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 14:12:15,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:15,784 INFO L124 PetriNetUnfolderBase]: 579/949 cut-off events. [2025-02-08 14:12:15,784 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-02-08 14:12:15,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 949 events. 579/949 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4816 event pairs, 575 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 2063. Up to 914 conditions per place. [2025-02-08 14:12:15,787 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2025-02-08 14:12:15,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 40 transitions, 229 flow [2025-02-08 14:12:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:12:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:12:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-02-08 14:12:15,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2025-02-08 14:12:15,788 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 167 flow. Second operand 3 states and 55 transitions. [2025-02-08 14:12:15,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 40 transitions, 229 flow [2025-02-08 14:12:15,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 211 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 14:12:15,789 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 143 flow [2025-02-08 14:12:15,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-02-08 14:12:15,790 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2025-02-08 14:12:15,790 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 143 flow [2025-02-08 14:12:15,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 14:12:15,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:15,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:15,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:12:15,790 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:15,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:15,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1992224604, now seen corresponding path program 1 times [2025-02-08 14:12:15,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:15,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864411655] [2025-02-08 14:12:15,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:15,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:12:15,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:12:15,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:15,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864411655] [2025-02-08 14:12:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864411655] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890372438] [2025-02-08 14:12:15,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:15,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:15,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:15,952 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 14:12:16,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:12:16,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:12:16,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:16,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:16,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 14:12:16,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:16,032 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 14:12:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:16,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:16,102 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 14 treesize of output 12 [2025-02-08 14:12:16,105 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 18 treesize of output 16 [2025-02-08 14:12:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890372438] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:16,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:16,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-02-08 14:12:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694820850] [2025-02-08 14:12:16,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:16,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 14:12:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:16,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 14:12:16,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-08 14:12:16,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 14:12:16,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 143 flow. Second operand has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 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 14:12:16,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:16,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 14:12:16,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:16,253 INFO L124 PetriNetUnfolderBase]: 454/777 cut-off events. [2025-02-08 14:12:16,253 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-02-08 14:12:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 777 events. 454/777 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3811 event pairs, 197 based on Foata normal form. 0/693 useless extension candidates. Maximal degree in co-relation 1566. Up to 374 conditions per place. [2025-02-08 14:12:16,254 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 33 selfloop transitions, 9 changer transitions 4/51 dead transitions. [2025-02-08 14:12:16,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 260 flow [2025-02-08 14:12:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:12:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:12:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2025-02-08 14:12:16,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2885714285714286 [2025-02-08 14:12:16,256 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 143 flow. Second operand 7 states and 101 transitions. [2025-02-08 14:12:16,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 260 flow [2025-02-08 14:12:16,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:16,257 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 154 flow [2025-02-08 14:12:16,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2025-02-08 14:12:16,257 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2025-02-08 14:12:16,257 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 154 flow [2025-02-08 14:12:16,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 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 14:12:16,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:16,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:16,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:16,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 14:12:16,458 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:16,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1013414632, now seen corresponding path program 1 times [2025-02-08 14:12:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:16,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209279974] [2025-02-08 14:12:16,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:16,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:16,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:12:16,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:12:16,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:16,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:16,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209279974] [2025-02-08 14:12:16,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209279974] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215513986] [2025-02-08 14:12:16,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:16,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:16,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:16,716 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 14:12:16,718 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 14:12:16,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:12:16,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:12:16,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:16,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:16,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 14:12:16,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:16,802 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 23 treesize of output 1 [2025-02-08 14:12:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:17,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:17,214 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 20 treesize of output 18 [2025-02-08 14:12:17,218 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 26 treesize of output 20 [2025-02-08 14:12:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215513986] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:17,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-02-08 14:12:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668899185] [2025-02-08 14:12:17,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:17,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 14:12:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:17,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 14:12:17,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2025-02-08 14:12:17,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2025-02-08 14:12:17,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 154 flow. Second operand has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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 14:12:17,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:17,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2025-02-08 14:12:17,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:18,126 INFO L124 PetriNetUnfolderBase]: 992/1639 cut-off events. [2025-02-08 14:12:18,127 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2025-02-08 14:12:18,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 1639 events. 992/1639 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8391 event pairs, 486 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 3670. Up to 500 conditions per place. [2025-02-08 14:12:18,132 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 96 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2025-02-08 14:12:18,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 588 flow [2025-02-08 14:12:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 14:12:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 14:12:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 195 transitions. [2025-02-08 14:12:18,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2785714285714286 [2025-02-08 14:12:18,134 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 154 flow. Second operand 14 states and 195 transitions. [2025-02-08 14:12:18,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 588 flow [2025-02-08 14:12:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 116 transitions, 542 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 14:12:18,136 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 199 flow [2025-02-08 14:12:18,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2025-02-08 14:12:18,136 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2025-02-08 14:12:18,136 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 199 flow [2025-02-08 14:12:18,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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 14:12:18,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:18,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:18,144 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 14:12:18,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:18,343 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:18,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1013414633, now seen corresponding path program 1 times [2025-02-08 14:12:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458701329] [2025-02-08 14:12:18,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:18,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:12:18,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:12:18,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:18,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:18,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:18,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458701329] [2025-02-08 14:12:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458701329] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:18,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656081895] [2025-02-08 14:12:18,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:18,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:18,581 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 14:12:18,583 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 14:12:18,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:12:18,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:12:18,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:18,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:18,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 14:12:18,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:18,684 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 23 treesize of output 1 [2025-02-08 14:12:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:18,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:19,040 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 18 treesize of output 16 [2025-02-08 14:12:19,042 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 22 treesize of output 16 [2025-02-08 14:12:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:19,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656081895] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:19,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:19,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-02-08 14:12:19,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98994109] [2025-02-08 14:12:19,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:19,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 14:12:19,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:19,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 14:12:19,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2025-02-08 14:12:19,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2025-02-08 14:12:19,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 199 flow. Second operand has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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 14:12:19,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:19,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2025-02-08 14:12:19,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:19,752 INFO L124 PetriNetUnfolderBase]: 848/1421 cut-off events. [2025-02-08 14:12:19,752 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2025-02-08 14:12:19,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3345 conditions, 1421 events. 848/1421 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7087 event pairs, 486 based on Foata normal form. 74/1490 useless extension candidates. Maximal degree in co-relation 3329. Up to 500 conditions per place. [2025-02-08 14:12:19,755 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 30 selfloop transitions, 11 changer transitions 70/114 dead transitions. [2025-02-08 14:12:19,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 585 flow [2025-02-08 14:12:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 14:12:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 14:12:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 193 transitions. [2025-02-08 14:12:19,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2757142857142857 [2025-02-08 14:12:19,757 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 199 flow. Second operand 14 states and 193 transitions. [2025-02-08 14:12:19,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 585 flow [2025-02-08 14:12:19,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 114 transitions, 569 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:19,760 INFO L231 Difference]: Finished difference. Result has 70 places, 35 transitions, 172 flow [2025-02-08 14:12:19,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=35} [2025-02-08 14:12:19,761 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2025-02-08 14:12:19,761 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 35 transitions, 172 flow [2025-02-08 14:12:19,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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 14:12:19,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:19,761 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:12:19,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:19,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:19,965 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:19,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 992194248, now seen corresponding path program 2 times [2025-02-08 14:12:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334025193] [2025-02-08 14:12:19,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:19,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:12:19,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:12:19,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:19,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:12:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334025193] [2025-02-08 14:12:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334025193] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510543266] [2025-02-08 14:12:20,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:20,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:20,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:20,003 INFO L229 MonitoredProcess]: Starting monitored process 10 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 14:12:20,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:12:20,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:12:20,068 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:12:20,068 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:20,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:20,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:12:20,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:12:20,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:12:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510543266] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:20,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:20,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:12:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621344821] [2025-02-08 14:12:20,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:20,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:20,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:20,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:20,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2025-02-08 14:12:20,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 35 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 14:12:20,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:20,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2025-02-08 14:12:20,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:20,173 INFO L124 PetriNetUnfolderBase]: 308/553 cut-off events. [2025-02-08 14:12:20,173 INFO L125 PetriNetUnfolderBase]: For 318/323 co-relation queries the response was YES. [2025-02-08 14:12:20,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 553 events. 308/553 cut-off events. For 318/323 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2448 event pairs, 306 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 1348. Up to 497 conditions per place. [2025-02-08 14:12:20,175 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 17 selfloop transitions, 13 changer transitions 0/34 dead transitions. [2025-02-08 14:12:20,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 34 transitions, 222 flow [2025-02-08 14:12:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-02-08 14:12:20,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25 [2025-02-08 14:12:20,176 INFO L175 Difference]: Start difference. First operand has 70 places, 35 transitions, 172 flow. Second operand 4 states and 50 transitions. [2025-02-08 14:12:20,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 34 transitions, 222 flow [2025-02-08 14:12:20,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 190 flow, removed 5 selfloop flow, removed 11 redundant places. [2025-02-08 14:12:20,178 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 156 flow [2025-02-08 14:12:20,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2025-02-08 14:12:20,178 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2025-02-08 14:12:20,178 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 156 flow [2025-02-08 14:12:20,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 14:12:20,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:20,178 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:20,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:20,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:20,379 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:20,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash -571887639, now seen corresponding path program 2 times [2025-02-08 14:12:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:20,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956155321] [2025-02-08 14:12:20,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:20,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:12:20,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:12:20,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:20,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956155321] [2025-02-08 14:12:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956155321] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938170940] [2025-02-08 14:12:20,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:20,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:20,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:20,958 INFO L229 MonitoredProcess]: Starting monitored process 11 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 14:12:20,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:12:21,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:12:21,032 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:12:21,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:21,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:21,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-08 14:12:21,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:21,055 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 14:12:21,108 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 14:12:21,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2025-02-08 14:12:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:21,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:21,790 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 34 treesize of output 32 [2025-02-08 14:12:21,793 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 254 treesize of output 242 [2025-02-08 14:12:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:21,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938170940] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:21,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:21,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2025-02-08 14:12:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780992622] [2025-02-08 14:12:21,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:21,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 14:12:21,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:21,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 14:12:21,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2025-02-08 14:12:22,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2025-02-08 14:12:22,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 156 flow. Second operand has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 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 14:12:22,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:22,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2025-02-08 14:12:22,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:23,134 INFO L124 PetriNetUnfolderBase]: 993/1646 cut-off events. [2025-02-08 14:12:23,134 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-02-08 14:12:23,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 1646 events. 993/1646 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7736 event pairs, 486 based on Foata normal form. 74/1715 useless extension candidates. Maximal degree in co-relation 3578. Up to 497 conditions per place. [2025-02-08 14:12:23,139 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 102 selfloop transitions, 25 changer transitions 0/130 dead transitions. [2025-02-08 14:12:23,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 130 transitions, 682 flow [2025-02-08 14:12:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 14:12:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 14:12:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 267 transitions. [2025-02-08 14:12:23,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23217391304347826 [2025-02-08 14:12:23,141 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 156 flow. Second operand 23 states and 267 transitions. [2025-02-08 14:12:23,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 130 transitions, 682 flow [2025-02-08 14:12:23,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 130 transitions, 640 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:12:23,144 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 265 flow [2025-02-08 14:12:23,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=265, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-02-08 14:12:23,144 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2025-02-08 14:12:23,144 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 265 flow [2025-02-08 14:12:23,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 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 14:12:23,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:23,144 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:23,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:23,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 14:12:23,349 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:23,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash -571887640, now seen corresponding path program 2 times [2025-02-08 14:12:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:23,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167281381] [2025-02-08 14:12:23,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:23,355 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:12:23,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:12:23,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:23,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167281381] [2025-02-08 14:12:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167281381] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412137681] [2025-02-08 14:12:23,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:12:23,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:23,865 INFO L229 MonitoredProcess]: Starting monitored process 12 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 14:12:23,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:12:23,920 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:12:23,935 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:12:23,935 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:12:23,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:23,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-08 14:12:23,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:23,958 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 14:12:23,999 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 29 treesize of output 13 [2025-02-08 14:12:24,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2025-02-08 14:12:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:24,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:24,680 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 36 treesize of output 34 [2025-02-08 14:12:24,683 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 140 treesize of output 134 [2025-02-08 14:12:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:24,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412137681] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:24,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:24,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2025-02-08 14:12:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947583921] [2025-02-08 14:12:24,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:24,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 14:12:24,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:24,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 14:12:24,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2025-02-08 14:12:25,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2025-02-08 14:12:25,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 265 flow. Second operand has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 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 14:12:25,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:25,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2025-02-08 14:12:25,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:25,873 INFO L124 PetriNetUnfolderBase]: 849/1428 cut-off events. [2025-02-08 14:12:25,873 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2025-02-08 14:12:25,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1428 events. 849/1428 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6548 event pairs, 486 based on Foata normal form. 74/1497 useless extension candidates. Maximal degree in co-relation 3401. Up to 497 conditions per place. [2025-02-08 14:12:25,876 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 28 selfloop transitions, 16 changer transitions 72/119 dead transitions. [2025-02-08 14:12:25,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 652 flow [2025-02-08 14:12:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 14:12:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 14:12:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 250 transitions. [2025-02-08 14:12:25,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.22727272727272727 [2025-02-08 14:12:25,877 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 265 flow. Second operand 22 states and 250 transitions. [2025-02-08 14:12:25,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 652 flow [2025-02-08 14:12:25,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 610 flow, removed 11 selfloop flow, removed 9 redundant places. [2025-02-08 14:12:25,881 INFO L231 Difference]: Finished difference. Result has 81 places, 38 transitions, 208 flow [2025-02-08 14:12:25,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=208, PETRI_PLACES=81, PETRI_TRANSITIONS=38} [2025-02-08 14:12:25,881 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2025-02-08 14:12:25,881 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 38 transitions, 208 flow [2025-02-08 14:12:25,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 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 14:12:25,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:25,882 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:25,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 14:12:26,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 14:12:26,082 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:26,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 252369385, now seen corresponding path program 3 times [2025-02-08 14:12:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938309155] [2025-02-08 14:12:26,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:26,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 8 equivalence classes. [2025-02-08 14:12:26,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:12:26,144 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 14:12:26,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:29,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:29,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938309155] [2025-02-08 14:12:29,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938309155] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:29,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235134355] [2025-02-08 14:12:29,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:29,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:29,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:29,337 INFO L229 MonitoredProcess]: Starting monitored process 13 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 14:12:29,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 14:12:29,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 8 equivalence classes. [2025-02-08 14:12:29,486 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:12:29,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 14:12:29,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:29,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-02-08 14:12:29,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:29,514 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 14:12:29,567 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 14:12:29,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2025-02-08 14:12:29,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2025-02-08 14:12:29,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2025-02-08 14:12:29,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2025-02-08 14:12:30,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2025-02-08 14:12:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:30,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:32,218 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 66 treesize of output 64 [2025-02-08 14:12:32,353 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 4575981554 treesize of output 4563398642 [2025-02-08 14:12:33,985 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-02-08 14:12:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235134355] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:34,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:34,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 54 [2025-02-08 14:12:34,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529513498] [2025-02-08 14:12:34,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:34,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-08 14:12:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:34,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-08 14:12:34,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2744, Unknown=0, NotChecked=0, Total=3080 [2025-02-08 14:12:35,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2025-02-08 14:12:35,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 38 transitions, 208 flow. Second operand has 56 states, 56 states have (on average 7.285714285714286) internal successors, (408), 56 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:35,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:35,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2025-02-08 14:12:35,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:41,705 INFO L124 PetriNetUnfolderBase]: 997/1674 cut-off events. [2025-02-08 14:12:41,705 INFO L125 PetriNetUnfolderBase]: For 967/967 co-relation queries the response was YES. [2025-02-08 14:12:41,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4145 conditions, 1674 events. 997/1674 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7572 event pairs, 486 based on Foata normal form. 74/1743 useless extension candidates. Maximal degree in co-relation 4132. Up to 497 conditions per place. [2025-02-08 14:12:41,711 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 94 selfloop transitions, 44 changer transitions 0/141 dead transitions. [2025-02-08 14:12:41,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 141 transitions, 872 flow [2025-02-08 14:12:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-08 14:12:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-08 14:12:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 368 transitions. [2025-02-08 14:12:41,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.1936842105263158 [2025-02-08 14:12:41,713 INFO L175 Difference]: Start difference. First operand has 81 places, 38 transitions, 208 flow. Second operand 38 states and 368 transitions. [2025-02-08 14:12:41,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 141 transitions, 872 flow [2025-02-08 14:12:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 813 flow, removed 8 selfloop flow, removed 15 redundant places. [2025-02-08 14:12:41,719 INFO L231 Difference]: Finished difference. Result has 94 places, 67 transitions, 471 flow [2025-02-08 14:12:41,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=471, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2025-02-08 14:12:41,720 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2025-02-08 14:12:41,720 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 471 flow [2025-02-08 14:12:41,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.285714285714286) internal successors, (408), 56 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:41,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:41,720 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:41,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:41,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 14:12:41,921 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:41,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 252369384, now seen corresponding path program 3 times [2025-02-08 14:12:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769277548] [2025-02-08 14:12:41,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:41,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:41,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 8 equivalence classes. [2025-02-08 14:12:41,955 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:12:41,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 14:12:41,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:44,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769277548] [2025-02-08 14:12:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769277548] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446295647] [2025-02-08 14:12:44,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:12:44,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:44,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:44,453 INFO L229 MonitoredProcess]: Starting monitored process 14 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 14:12:44,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 14:12:44,514 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 8 equivalence classes. [2025-02-08 14:12:44,583 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:12:44,583 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 14:12:44,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:44,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-02-08 14:12:44,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:44,613 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 14:12:44,667 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 29 treesize of output 13 [2025-02-08 14:12:44,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2025-02-08 14:12:44,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2025-02-08 14:12:44,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 55 [2025-02-08 14:12:45,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2025-02-08 14:12:45,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 83 [2025-02-08 14:12:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:45,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:47,861 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 68 treesize of output 66 [2025-02-08 14:12:47,917 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 39813106 treesize of output 39714802 [2025-02-08 14:12:48,271 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-02-08 14:12:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446295647] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:48,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 55 [2025-02-08 14:12:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289111482] [2025-02-08 14:12:48,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:48,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-08 14:12:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:48,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-08 14:12:48,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2025-02-08 14:12:49,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2025-02-08 14:12:49,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 471 flow. Second operand has 57 states, 57 states have (on average 7.2631578947368425) internal successors, (414), 57 states have internal predecessors, (414), 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 14:12:49,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:49,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2025-02-08 14:12:49,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:56,697 INFO L124 PetriNetUnfolderBase]: 853/1456 cut-off events. [2025-02-08 14:12:56,697 INFO L125 PetriNetUnfolderBase]: For 787/787 co-relation queries the response was YES. [2025-02-08 14:12:56,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1456 events. 853/1456 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6472 event pairs, 451 based on Foata normal form. 74/1526 useless extension candidates. Maximal degree in co-relation 3642. Up to 497 conditions per place. [2025-02-08 14:12:56,703 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 28 selfloop transitions, 32 changer transitions 79/142 dead transitions. [2025-02-08 14:12:56,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 142 transitions, 915 flow [2025-02-08 14:12:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-08 14:12:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-02-08 14:12:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 375 transitions. [2025-02-08 14:12:56,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.19230769230769232 [2025-02-08 14:12:56,705 INFO L175 Difference]: Start difference. First operand has 94 places, 67 transitions, 471 flow. Second operand 39 states and 375 transitions. [2025-02-08 14:12:56,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 142 transitions, 915 flow [2025-02-08 14:12:56,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 813 flow, removed 9 selfloop flow, removed 15 redundant places. [2025-02-08 14:12:56,711 INFO L231 Difference]: Finished difference. Result has 118 places, 54 transitions, 375 flow [2025-02-08 14:12:56,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=375, PETRI_PLACES=118, PETRI_TRANSITIONS=54} [2025-02-08 14:12:56,712 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2025-02-08 14:12:56,712 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 54 transitions, 375 flow [2025-02-08 14:12:56,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.2631578947368425) internal successors, (414), 57 states have internal predecessors, (414), 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 14:12:56,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:56,712 INFO L206 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:56,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:56,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:56,913 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:12:56,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash 545271273, now seen corresponding path program 4 times [2025-02-08 14:12:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244704081] [2025-02-08 14:12:56,914 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:12:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:56,923 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-08 14:12:56,992 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 14:12:56,992 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:12:56,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat