./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:08:21,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:08:21,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:08:21,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:08:21,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:08:21,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:08:21,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:08:21,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:08:21,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:08:21,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:08:21,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:08:21,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:08:21,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:08:21,447 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:21,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:08:21,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:08:21,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:08:21,448 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 -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2025-02-08 14:08:21,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:08:21,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:08:21,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:08:21,665 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:08:21,665 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:08:21,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-02-08 14:08:22,754 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7895b84a9/d0108b31eaf944a78627fe9c4ba5adb5/FLAG6ca63a077 [2025-02-08 14:08:23,035 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:08:23,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-02-08 14:08:23,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7895b84a9/d0108b31eaf944a78627fe9c4ba5adb5/FLAG6ca63a077 [2025-02-08 14:08:23,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7895b84a9/d0108b31eaf944a78627fe9c4ba5adb5 [2025-02-08 14:08:23,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:08:23,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:08:23,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:23,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:08:23,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:08:23,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfb4527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23, skipping insertion in model container [2025-02-08 14:08:23,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,349 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:08:23,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:23,530 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:08:23,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:23,558 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:08:23,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23 WrapperNode [2025-02-08 14:08:23,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:23,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:23,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:08:23,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:08:23,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,591 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 350 [2025-02-08 14:08:23,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:23,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:08:23,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:08:23,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:08:23,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,612 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 14:08:23,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:08:23,623 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:08:23,623 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:08:23,623 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:08:23,624 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (1/1) ... [2025-02-08 14:08:23,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:23,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:23,663 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 14:08:23,666 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 14:08:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:08:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:08:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:08:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:08:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:08:23,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:08:23,685 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 14:08:23,777 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:08:23,778 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:08:23,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-3: #t~ite5#1 := #t~ret4#1; [2025-02-08 14:08:23,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 14:08:23,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:23,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-6: havoc minus_#t~short41#1, minus_#t~short42#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:23,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-7: #t~ret4#1 := minus_#res#1; [2025-02-08 14:08:23,957 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-3: #t~ite10#1 := #t~ret9#1; [2025-02-08 14:08:23,958 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret9#1 && #t~ret9#1 <= 2147483647; [2025-02-08 14:08:23,958 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:23,958 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-6: havoc minus_#t~short41#1, minus_#t~short42#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:23,958 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-7: #t~ret9#1 := minus_#res#1; [2025-02-08 14:08:24,045 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-3: #t~ite15#1 := #t~ret14#1; [2025-02-08 14:08:24,046 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret14#1 && #t~ret14#1 <= 2147483647; [2025-02-08 14:08:24,046 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:24,047 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-6: havoc minus_#t~short41#1, minus_#t~short42#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:24,047 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-7: #t~ret14#1 := minus_#res#1; [2025-02-08 14:08:24,148 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:08:24,148 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:08:24,357 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:08:24,358 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:08:24,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:24 BoogieIcfgContainer [2025-02-08 14:08:24,358 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:08:24,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:08:24,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:08:24,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:08:24,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:08:23" (1/3) ... [2025-02-08 14:08:24,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580f9c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:24, skipping insertion in model container [2025-02-08 14:08:24,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:23" (2/3) ... [2025-02-08 14:08:24,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580f9c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:24, skipping insertion in model container [2025-02-08 14:08:24,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:24" (3/3) ... [2025-02-08 14:08:24,364 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2025-02-08 14:08:24,375 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:08:24,376 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-trans.wvr.c that has 4 procedures, 98 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-02-08 14:08:24,377 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:08:24,434 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:08:24,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 110 transitions, 241 flow [2025-02-08 14:08:24,479 INFO L124 PetriNetUnfolderBase]: 13/107 cut-off events. [2025-02-08 14:08:24,481 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:08:24,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 13/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 439 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2025-02-08 14:08:24,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 110 transitions, 241 flow [2025-02-08 14:08:24,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 105 transitions, 225 flow [2025-02-08 14:08:24,491 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:08:24,497 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;@618095a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:08:24,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2025-02-08 14:08:24,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:08:24,501 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:08:24,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:08:24,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:24,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:08:24,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:24,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash 922614, now seen corresponding path program 1 times [2025-02-08 14:08:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873242213] [2025-02-08 14:08:24,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:24,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:08:24,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:08:24,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:24,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:24,676 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 14:08:24,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:24,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873242213] [2025-02-08 14:08:24,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873242213] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:24,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:24,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:24,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813018331] [2025-02-08 14:08:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:24,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:24,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:24,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:24,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:24,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:24,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 14:08:24,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:24,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:24,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:26,180 INFO L124 PetriNetUnfolderBase]: 11567/22660 cut-off events. [2025-02-08 14:08:26,180 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2025-02-08 14:08:26,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38671 conditions, 22660 events. 11567/22660 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 210262 event pairs, 8652 based on Foata normal form. 1/17544 useless extension candidates. Maximal degree in co-relation 37382. Up to 15565 conditions per place. [2025-02-08 14:08:26,298 INFO L140 encePairwiseOnDemand]: 101/110 looper letters, 52 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2025-02-08 14:08:26,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 337 flow [2025-02-08 14:08:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2025-02-08 14:08:26,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2025-02-08 14:08:26,309 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 225 flow. Second operand 4 states and 269 transitions. [2025-02-08 14:08:26,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 337 flow [2025-02-08 14:08:26,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 328 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:08:26,319 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 239 flow [2025-02-08 14:08:26,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2025-02-08 14:08:26,323 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2025-02-08 14:08:26,323 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 239 flow [2025-02-08 14:08:26,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 14:08:26,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:26,324 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:08:26,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:08:26,324 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:26,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1716637554, now seen corresponding path program 1 times [2025-02-08 14:08:26,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:26,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968691859] [2025-02-08 14:08:26,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:26,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:08:26,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:08:26,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:26,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:26,511 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 14:08:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968691859] [2025-02-08 14:08:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968691859] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429126625] [2025-02-08 14:08:26,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:26,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:26,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:26,516 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 14:08:26,519 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 14:08:26,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:08:26,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:08:26,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:26,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:26,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:08:26,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:26,614 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 14:08:26,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429126625] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:26,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:26,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:08:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545553664] [2025-02-08 14:08:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:26,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:26,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:26,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:26,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:26,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:26,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 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 14:08:26,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:26,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:26,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:27,870 INFO L124 PetriNetUnfolderBase]: 11567/22659 cut-off events. [2025-02-08 14:08:27,870 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2025-02-08 14:08:27,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38518 conditions, 22659 events. 11567/22659 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 210224 event pairs, 8652 based on Foata normal form. 1/17544 useless extension candidates. Maximal degree in co-relation 38491. Up to 15560 conditions per place. [2025-02-08 14:08:27,946 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 48 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2025-02-08 14:08:27,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 345 flow [2025-02-08 14:08:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2025-02-08 14:08:27,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2025-02-08 14:08:27,957 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 239 flow. Second operand 6 states and 368 transitions. [2025-02-08 14:08:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 345 flow [2025-02-08 14:08:27,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:27,959 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 246 flow [2025-02-08 14:08:27,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2025-02-08 14:08:27,960 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2025-02-08 14:08:27,960 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 246 flow [2025-02-08 14:08:27,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 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 14:08:27,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:27,960 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:08:27,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:08:28,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:28,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:28,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1676157475, now seen corresponding path program 1 times [2025-02-08 14:08:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093972920] [2025-02-08 14:08:28,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:28,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:28,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:08:28,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:08:28,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:28,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:28,256 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 14:08:28,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093972920] [2025-02-08 14:08:28,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093972920] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354508113] [2025-02-08 14:08:28,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:28,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:28,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:28,260 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 14:08:28,262 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 14:08:28,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:08:28,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:08:28,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:28,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:28,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:08:28,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:28,347 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 14:08:28,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:08:28,382 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 14:08:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354508113] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:08:28,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:08:28,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:08:28,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951247126] [2025-02-08 14:08:28,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:08:28,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:08:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:28,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:08:28,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:08:28,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:28,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 246 flow. Second operand has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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 14:08:28,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:28,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:28,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:29,721 INFO L124 PetriNetUnfolderBase]: 11570/22671 cut-off events. [2025-02-08 14:08:29,722 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-02-08 14:08:29,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38562 conditions, 22671 events. 11570/22671 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 210417 event pairs, 8652 based on Foata normal form. 3/17556 useless extension candidates. Maximal degree in co-relation 38492. Up to 15567 conditions per place. [2025-02-08 14:08:29,853 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 51 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2025-02-08 14:08:29,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 428 flow [2025-02-08 14:08:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:08:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:08:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2025-02-08 14:08:29,858 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5336363636363637 [2025-02-08 14:08:29,859 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 246 flow. Second operand 10 states and 587 transitions. [2025-02-08 14:08:29,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 428 flow [2025-02-08 14:08:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 382 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-08 14:08:29,861 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 298 flow [2025-02-08 14:08:29,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2025-02-08 14:08:29,862 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2025-02-08 14:08:29,862 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 298 flow [2025-02-08 14:08:29,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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 14:08:29,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:29,864 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:29,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:08:30,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:30,065 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:30,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1819439797, now seen corresponding path program 1 times [2025-02-08 14:08:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634896245] [2025-02-08 14:08:30,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:30,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:08:30,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:08:30,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:30,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:30,185 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 14:08:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634896245] [2025-02-08 14:08:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634896245] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:30,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:30,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438696016] [2025-02-08 14:08:30,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:30,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:08:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:30,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:08:30,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:08:30,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 110 [2025-02-08 14:08:30,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 14:08:30,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:30,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 110 [2025-02-08 14:08:30,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:31,418 INFO L124 PetriNetUnfolderBase]: 11569/22670 cut-off events. [2025-02-08 14:08:31,418 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2025-02-08 14:08:31,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38559 conditions, 22670 events. 11569/22670 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 210218 event pairs, 8652 based on Foata normal form. 1/17556 useless extension candidates. Maximal degree in co-relation 38525. Up to 15571 conditions per place. [2025-02-08 14:08:31,508 INFO L140 encePairwiseOnDemand]: 107/110 looper letters, 60 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2025-02-08 14:08:31,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 112 transitions, 418 flow [2025-02-08 14:08:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:08:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:08:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2025-02-08 14:08:31,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2025-02-08 14:08:31,510 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 298 flow. Second operand 3 states and 216 transitions. [2025-02-08 14:08:31,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 112 transitions, 418 flow [2025-02-08 14:08:31,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 408 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:31,511 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 288 flow [2025-02-08 14:08:31,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2025-02-08 14:08:31,512 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2025-02-08 14:08:31,512 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 288 flow [2025-02-08 14:08:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 14:08:31,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:31,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:31,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:08:31,512 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:31,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1261703217, now seen corresponding path program 1 times [2025-02-08 14:08:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566499031] [2025-02-08 14:08:31,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:31,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:08:31,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:08:31,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:31,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:31,563 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 14:08:31,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566499031] [2025-02-08 14:08:31,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566499031] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:31,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:31,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:31,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628774238] [2025-02-08 14:08:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:31,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:31,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:31,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:31,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:31,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 14:08:31,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:31,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:31,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:33,817 INFO L124 PetriNetUnfolderBase]: 24366/45385 cut-off events. [2025-02-08 14:08:33,818 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-02-08 14:08:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78831 conditions, 45385 events. 24366/45385 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1886. Compared 443087 event pairs, 10468 based on Foata normal form. 366/36318 useless extension candidates. Maximal degree in co-relation 78811. Up to 17819 conditions per place. [2025-02-08 14:08:33,972 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 137 selfloop transitions, 3 changer transitions 0/188 dead transitions. [2025-02-08 14:08:33,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 188 transitions, 728 flow [2025-02-08 14:08:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2025-02-08 14:08:33,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7704545454545455 [2025-02-08 14:08:33,973 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 288 flow. Second operand 4 states and 339 transitions. [2025-02-08 14:08:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 188 transitions, 728 flow [2025-02-08 14:08:33,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 188 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:33,976 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 306 flow [2025-02-08 14:08:33,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2025-02-08 14:08:33,977 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 13 predicate places. [2025-02-08 14:08:33,977 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 306 flow [2025-02-08 14:08:33,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 14:08:33,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:33,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:33,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:08:33,978 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:33,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash -231009753, now seen corresponding path program 1 times [2025-02-08 14:08:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:33,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395049986] [2025-02-08 14:08:33,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:33,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:33,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:08:33,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:08:33,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:33,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:34,057 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 14:08:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:34,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395049986] [2025-02-08 14:08:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395049986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:34,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:34,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:34,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534405145] [2025-02-08 14:08:34,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:34,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:34,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:34,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:34,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:34,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:34,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:34,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:34,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:34,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:38,153 INFO L124 PetriNetUnfolderBase]: 46926/87675 cut-off events. [2025-02-08 14:08:38,153 INFO L125 PetriNetUnfolderBase]: For 6172/7294 co-relation queries the response was YES. [2025-02-08 14:08:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156355 conditions, 87675 events. 46926/87675 cut-off events. For 6172/7294 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 934563 event pairs, 20680 based on Foata normal form. 726/71232 useless extension candidates. Maximal degree in co-relation 156326. Up to 34508 conditions per place. [2025-02-08 14:08:38,777 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 140 selfloop transitions, 3 changer transitions 0/191 dead transitions. [2025-02-08 14:08:38,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 191 transitions, 781 flow [2025-02-08 14:08:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2025-02-08 14:08:38,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2025-02-08 14:08:38,782 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 306 flow. Second operand 4 states and 336 transitions. [2025-02-08 14:08:38,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 191 transitions, 781 flow [2025-02-08 14:08:38,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 191 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:38,794 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 326 flow [2025-02-08 14:08:38,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2025-02-08 14:08:38,799 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2025-02-08 14:08:38,799 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 326 flow [2025-02-08 14:08:38,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:38,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:38,799 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:38,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:08:38,800 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:38,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2141545781, now seen corresponding path program 1 times [2025-02-08 14:08:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:38,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114031997] [2025-02-08 14:08:38,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:38,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:38,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:08:38,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:08:38,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:38,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:38,863 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 14:08:38,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114031997] [2025-02-08 14:08:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114031997] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:38,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:38,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:08:38,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995828864] [2025-02-08 14:08:38,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:38,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:38,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:38,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:38,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 110 [2025-02-08 14:08:38,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 14:08:38,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:38,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 110 [2025-02-08 14:08:38,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:42,011 INFO L124 PetriNetUnfolderBase]: 34579/62484 cut-off events. [2025-02-08 14:08:42,011 INFO L125 PetriNetUnfolderBase]: For 8010/9192 co-relation queries the response was YES. [2025-02-08 14:08:42,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118201 conditions, 62484 events. 34579/62484 cut-off events. For 8010/9192 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 608026 event pairs, 15444 based on Foata normal form. 0/53038 useless extension candidates. Maximal degree in co-relation 118170. Up to 27538 conditions per place. [2025-02-08 14:08:42,343 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 167 selfloop transitions, 4 changer transitions 0/221 dead transitions. [2025-02-08 14:08:42,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 221 transitions, 931 flow [2025-02-08 14:08:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2025-02-08 14:08:42,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.769090909090909 [2025-02-08 14:08:42,345 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 326 flow. Second operand 5 states and 423 transitions. [2025-02-08 14:08:42,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 221 transitions, 931 flow [2025-02-08 14:08:42,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 221 transitions, 923 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:42,377 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 349 flow [2025-02-08 14:08:42,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2025-02-08 14:08:42,378 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2025-02-08 14:08:42,378 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 349 flow [2025-02-08 14:08:42,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 14:08:42,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:42,378 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:42,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:08:42,379 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:42,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2023648804, now seen corresponding path program 1 times [2025-02-08 14:08:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869015092] [2025-02-08 14:08:42,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:42,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:42,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:42,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:42,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:42,417 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 14:08:42,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869015092] [2025-02-08 14:08:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869015092] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:42,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014614474] [2025-02-08 14:08:42,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:42,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:42,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:42,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:42,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:42,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 14:08:42,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:42,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:42,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:48,958 INFO L124 PetriNetUnfolderBase]: 67868/123663 cut-off events. [2025-02-08 14:08:48,958 INFO L125 PetriNetUnfolderBase]: For 35752/39383 co-relation queries the response was YES. [2025-02-08 14:08:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242101 conditions, 123663 events. 67868/123663 cut-off events. For 35752/39383 co-relation queries the response was YES. Maximal size of possible extension queue 4467. Compared 1317465 event pairs, 32058 based on Foata normal form. 1004/105308 useless extension candidates. Maximal degree in co-relation 242068. Up to 52166 conditions per place. [2025-02-08 14:08:49,621 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 149 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2025-02-08 14:08:49,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 200 transitions, 911 flow [2025-02-08 14:08:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2025-02-08 14:08:49,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2025-02-08 14:08:49,623 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 349 flow. Second operand 4 states and 333 transitions. [2025-02-08 14:08:49,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 200 transitions, 911 flow [2025-02-08 14:08:49,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 200 transitions, 911 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:08:49,650 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 371 flow [2025-02-08 14:08:49,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2025-02-08 14:08:49,651 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 28 predicate places. [2025-02-08 14:08:49,651 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 371 flow [2025-02-08 14:08:49,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 14:08:49,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:49,651 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:49,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:08:49,652 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-02-08 14:08:49,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1996857001, now seen corresponding path program 1 times [2025-02-08 14:08:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181460786] [2025-02-08 14:08:49,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:49,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:49,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:49,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:49,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181460786] [2025-02-08 14:08:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181460786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722606145] [2025-02-08 14:08:49,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:49,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:49,721 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 14:08:49,722 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 14:08:49,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:49,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:49,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:49,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:49,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:08:49,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:49,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:08:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722606145] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:08:49,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:08:49,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:08:49,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658748317] [2025-02-08 14:08:49,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:08:49,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 14:08:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:49,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 14:08:49,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:08:49,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2025-02-08 14:08:49,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 371 flow. Second operand has 11 states, 11 states have (on average 53.54545454545455) internal successors, (589), 11 states have internal predecessors, (589), 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 14:08:49,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:49,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2025-02-08 14:08:49,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand