./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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-Reach-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 ! call(reach_error())) ) --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 01:12:58,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:12:58,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:12:58,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:12:58,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:12:58,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:12:58,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:12:58,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:12:58,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:12:58,189 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:12:58,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:12:58,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:12:58,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:12:58,190 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:12:58,191 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:58,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:12:58,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:12:58,191 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 ! call(reach_error())) ) 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 01:12:58,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:12:58,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:12:58,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:12:58,446 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:12:58,446 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:12:58,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-02-08 01:12:59,639 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d9f128ffe/61ddff055f2c4f13875af37176d2915b/FLAG68277800c [2025-02-08 01:12:59,942 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:12:59,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-02-08 01:12:59,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d9f128ffe/61ddff055f2c4f13875af37176d2915b/FLAG68277800c [2025-02-08 01:13:00,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d9f128ffe/61ddff055f2c4f13875af37176d2915b [2025-02-08 01:13:00,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:13:00,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:13:00,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:13:00,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:13:00,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:13:00,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bc7117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00, skipping insertion in model container [2025-02-08 01:13:00,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:13:00,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4827,4840] [2025-02-08 01:13:00,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:13:00,430 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:13:00,461 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4827,4840] [2025-02-08 01:13:00,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:13:00,482 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:13:00,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00 WrapperNode [2025-02-08 01:13:00,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:13:00,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:13:00,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:13:00,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:13:00,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,528 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 298 [2025-02-08 01:13:00,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:13:00,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:13:00,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:13:00,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:13:00,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,551 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 01:13:00,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:13:00,565 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:13:00,565 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:13:00,565 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:13:00,566 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (1/1) ... [2025-02-08 01:13:00,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:13:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:00,590 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 01:13:00,592 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 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:13:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:13:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:13:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:13:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:13:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:13:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:13:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:13:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:13:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:13:00,612 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 01:13:00,711 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:13:00,713 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:13:00,864 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-3: #t~ite5#1 := #t~ret4#1; [2025-02-08 01:13:00,864 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 01:13:00,864 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:13:00,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:13:00,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-7: #t~ret4#1 := minus_#res#1; [2025-02-08 01:13:00,918 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-3: #t~ite10#1 := #t~ret9#1; [2025-02-08 01:13:00,919 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 01:13:00,919 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:13:00,919 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:13:00,919 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-7: #t~ret9#1 := minus_#res#1; [2025-02-08 01:13:00,983 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-3: #t~ite15#1 := #t~ret14#1; [2025-02-08 01:13:00,983 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 01:13:00,983 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:13:00,983 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:13:00,983 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-7: #t~ret14#1 := minus_#res#1; [2025-02-08 01:13:01,073 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:13:01,074 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:13:01,285 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:13:01,285 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:13:01,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:13:01 BoogieIcfgContainer [2025-02-08 01:13:01,286 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:13:01,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:13:01,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:13:01,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:13:01,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:13:00" (1/3) ... [2025-02-08 01:13:01,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ce0940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:13:01, skipping insertion in model container [2025-02-08 01:13:01,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:13:00" (2/3) ... [2025-02-08 01:13:01,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ce0940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:13:01, skipping insertion in model container [2025-02-08 01:13:01,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:13:01" (3/3) ... [2025-02-08 01:13:01,292 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2025-02-08 01:13:01,303 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:13:01,304 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-trans.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-08 01:13:01,304 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:13:01,340 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:13:01,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 42 transitions, 105 flow [2025-02-08 01:13:01,379 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2025-02-08 01:13:01,384 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:13:01,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 7/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-08 01:13:01,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 42 transitions, 105 flow [2025-02-08 01:13:01,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 94 flow [2025-02-08 01:13:01,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:13:01,401 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;@535fc156, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:13:01,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:13:01,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:13:01,412 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2025-02-08 01:13:01,412 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:13:01,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:01,412 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:01,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:01,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1398030384, now seen corresponding path program 1 times [2025-02-08 01:13:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817918080] [2025-02-08 01:13:01,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:01,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:13:01,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:01,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:01,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:01,709 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 01:13:01,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817918080] [2025-02-08 01:13:01,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817918080] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:01,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:01,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:13:01,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928877825] [2025-02-08 01:13:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:01,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:13:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:01,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:13:01,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:13:01,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:01,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:01,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:02,123 INFO L124 PetriNetUnfolderBase]: 2032/2892 cut-off events. [2025-02-08 01:13:02,124 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-02-08 01:13:02,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 2892 events. 2032/2892 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11277 event pairs, 1692 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 5558. Up to 2891 conditions per place. [2025-02-08 01:13:02,136 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 30 selfloop transitions, 2 changer transitions 3/36 dead transitions. [2025-02-08 01:13:02,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 160 flow [2025-02-08 01:13:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:13:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:13:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-02-08 01:13:02,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-02-08 01:13:02,146 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 94 flow. Second operand 3 states and 51 transitions. [2025-02-08 01:13:02,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 160 flow [2025-02-08 01:13:02,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:13:02,154 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 82 flow [2025-02-08 01:13:02,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-02-08 01:13:02,162 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2025-02-08 01:13:02,162 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 82 flow [2025-02-08 01:13:02,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:02,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:02,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:13:02,163 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:02,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 469724603, now seen corresponding path program 1 times [2025-02-08 01:13:02,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915705881] [2025-02-08 01:13:02,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:02,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:13:02,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:02,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:02,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915705881] [2025-02-08 01:13:02,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915705881] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521018878] [2025-02-08 01:13:02,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:02,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:02,352 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 01:13:02,352 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 01:13:02,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:13:02,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:02,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:02,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:13:02,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:02,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521018878] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:02,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:02,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-08 01:13:02,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914152664] [2025-02-08 01:13:02,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:02,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:13:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:02,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:13:02,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:13:02,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:02,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 01:13:02,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:02,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:02,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:02,674 INFO L124 PetriNetUnfolderBase]: 1316/1882 cut-off events. [2025-02-08 01:13:02,675 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-02-08 01:13:02,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 1882 events. 1316/1882 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6671 event pairs, 1060 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 3806. Up to 1879 conditions per place. [2025-02-08 01:13:02,684 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 30 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2025-02-08 01:13:02,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 158 flow [2025-02-08 01:13:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2025-02-08 01:13:02,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2025-02-08 01:13:02,685 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 82 flow. Second operand 5 states and 56 transitions. [2025-02-08 01:13:02,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 158 flow [2025-02-08 01:13:02,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 154 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:02,686 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 104 flow [2025-02-08 01:13:02,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2025-02-08 01:13:02,687 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2025-02-08 01:13:02,687 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 104 flow [2025-02-08 01:13:02,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 01:13:02,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:02,687 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:02,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:02,888 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 01:13:02,888 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:02,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash -100755141, now seen corresponding path program 2 times [2025-02-08 01:13:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:02,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677933474] [2025-02-08 01:13:02,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:02,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:13:02,913 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:13:02,913 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:02,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:03,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677933474] [2025-02-08 01:13:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677933474] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:03,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:03,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:03,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021142785] [2025-02-08 01:13:03,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:03,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:03,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:03,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:03,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:03,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:03,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:03,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:03,439 INFO L124 PetriNetUnfolderBase]: 2424/3463 cut-off events. [2025-02-08 01:13:03,440 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-02-08 01:13:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 3463 events. 2424/3463 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14927 event pairs, 1060 based on Foata normal form. 1/2980 useless extension candidates. Maximal degree in co-relation 6996. Up to 1882 conditions per place. [2025-02-08 01:13:03,458 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 51 selfloop transitions, 2 changer transitions 23/77 dead transitions. [2025-02-08 01:13:03,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 77 transitions, 347 flow [2025-02-08 01:13:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:13:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:13:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-02-08 01:13:03,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-02-08 01:13:03,461 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 104 flow. Second operand 4 states and 90 transitions. [2025-02-08 01:13:03,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 77 transitions, 347 flow [2025-02-08 01:13:03,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 337 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:03,463 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 108 flow [2025-02-08 01:13:03,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2025-02-08 01:13:03,464 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2025-02-08 01:13:03,465 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 108 flow [2025-02-08 01:13:03,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:03,465 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:03,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:13:03,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:03,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash 261410456, now seen corresponding path program 1 times [2025-02-08 01:13:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:03,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753787188] [2025-02-08 01:13:03,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:03,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 01:13:03,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:03,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:03,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 01:13:03,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:03,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753787188] [2025-02-08 01:13:03,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753787188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:03,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:03,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:13:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055048336] [2025-02-08 01:13:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:13:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:03,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:13:03,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:13:03,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:03,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:03,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:03,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:04,267 INFO L124 PetriNetUnfolderBase]: 3906/5553 cut-off events. [2025-02-08 01:13:04,267 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-02-08 01:13:04,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12025 conditions, 5553 events. 3906/5553 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25652 event pairs, 1780 based on Foata normal form. 1/5029 useless extension candidates. Maximal degree in co-relation 12012. Up to 3050 conditions per place. [2025-02-08 01:13:04,285 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 52 selfloop transitions, 2 changer transitions 22/77 dead transitions. [2025-02-08 01:13:04,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 368 flow [2025-02-08 01:13:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:13:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:13:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 01:13:04,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2025-02-08 01:13:04,287 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 108 flow. Second operand 4 states and 87 transitions. [2025-02-08 01:13:04,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 77 transitions, 368 flow [2025-02-08 01:13:04,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 77 transitions, 360 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:04,288 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 118 flow [2025-02-08 01:13:04,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2025-02-08 01:13:04,289 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2025-02-08 01:13:04,289 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 118 flow [2025-02-08 01:13:04,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:04,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:04,289 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:04,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:13:04,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:04,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1864310435, now seen corresponding path program 1 times [2025-02-08 01:13:04,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:04,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296333370] [2025-02-08 01:13:04,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:04,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:04,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 01:13:04,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:04,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:04,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296333370] [2025-02-08 01:13:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296333370] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915925254] [2025-02-08 01:13:05,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:05,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:05,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:05,222 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 01:13:05,225 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 01:13:05,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 01:13:05,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:05,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:05,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:05,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 01:13:05,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:05,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 85 [2025-02-08 01:13:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:06,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:06,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 32 [2025-02-08 01:13:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915925254] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:06,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 26 [2025-02-08 01:13:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651477981] [2025-02-08 01:13:06,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:06,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 01:13:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:06,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 01:13:06,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2025-02-08 01:13:06,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:06,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 118 flow. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 26 states have internal predecessors, (197), 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 01:13:06,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:06,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:06,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:10,777 INFO L124 PetriNetUnfolderBase]: 9995/14511 cut-off events. [2025-02-08 01:13:10,777 INFO L125 PetriNetUnfolderBase]: For 2512/2512 co-relation queries the response was YES. [2025-02-08 01:13:10,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32553 conditions, 14511 events. 9995/14511 cut-off events. For 2512/2512 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 81080 event pairs, 1091 based on Foata normal form. 5/13815 useless extension candidates. Maximal degree in co-relation 32527. Up to 2420 conditions per place. [2025-02-08 01:13:10,846 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 228 selfloop transitions, 50 changer transitions 202/481 dead transitions. [2025-02-08 01:13:10,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 481 transitions, 2195 flow [2025-02-08 01:13:10,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 01:13:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 01:13:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 623 transitions. [2025-02-08 01:13:10,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4009009009009009 [2025-02-08 01:13:10,851 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 118 flow. Second operand 37 states and 623 transitions. [2025-02-08 01:13:10,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 481 transitions, 2195 flow [2025-02-08 01:13:10,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 481 transitions, 2161 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:10,861 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 522 flow [2025-02-08 01:13:10,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=522, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2025-02-08 01:13:10,863 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2025-02-08 01:13:10,864 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 522 flow [2025-02-08 01:13:10,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 26 states have internal predecessors, (197), 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 01:13:10,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:10,865 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:10,938 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 01:13:11,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:11,066 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:11,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1926650805, now seen corresponding path program 2 times [2025-02-08 01:13:11,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:11,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108046555] [2025-02-08 01:13:11,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:11,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:11,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 01:13:11,116 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:11,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:11,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108046555] [2025-02-08 01:13:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108046555] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788304542] [2025-02-08 01:13:11,668 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:11,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:11,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:11,674 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 01:13:11,675 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 01:13:11,729 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 01:13:11,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:11,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:11,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:11,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:13:11,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:12,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 112 [2025-02-08 01:13:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:12,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:12,761 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:13:12,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 26 [2025-02-08 01:13:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788304542] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:12,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2025-02-08 01:13:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283700381] [2025-02-08 01:13:12,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:12,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 01:13:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:12,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 01:13:12,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2025-02-08 01:13:12,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:12,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 522 flow. Second operand has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 24 states have internal predecessors, (187), 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 01:13:12,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:12,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:12,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:17,453 INFO L124 PetriNetUnfolderBase]: 18113/26593 cut-off events. [2025-02-08 01:13:17,453 INFO L125 PetriNetUnfolderBase]: For 152543/152543 co-relation queries the response was YES. [2025-02-08 01:13:17,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99190 conditions, 26593 events. 18113/26593 cut-off events. For 152543/152543 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 165486 event pairs, 2612 based on Foata normal form. 10/26603 useless extension candidates. Maximal degree in co-relation 99142. Up to 5649 conditions per place. [2025-02-08 01:13:17,752 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 330 selfloop transitions, 107 changer transitions 162/600 dead transitions. [2025-02-08 01:13:17,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 600 transitions, 4659 flow [2025-02-08 01:13:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 01:13:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-08 01:13:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 619 transitions. [2025-02-08 01:13:17,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4334733893557423 [2025-02-08 01:13:17,760 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 522 flow. Second operand 34 states and 619 transitions. [2025-02-08 01:13:17,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 600 transitions, 4659 flow [2025-02-08 01:13:18,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 600 transitions, 3904 flow, removed 347 selfloop flow, removed 13 redundant places. [2025-02-08 01:13:18,256 INFO L231 Difference]: Finished difference. Result has 123 places, 176 transitions, 1526 flow [2025-02-08 01:13:18,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1526, PETRI_PLACES=123, PETRI_TRANSITIONS=176} [2025-02-08 01:13:18,257 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2025-02-08 01:13:18,257 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 176 transitions, 1526 flow [2025-02-08 01:13:18,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 24 states have internal predecessors, (187), 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 01:13:18,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:18,257 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:18,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:18,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:18,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:18,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:18,463 INFO L85 PathProgramCache]: Analyzing trace with hash 344702139, now seen corresponding path program 3 times [2025-02-08 01:13:18,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:18,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830978175] [2025-02-08 01:13:18,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:18,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:18,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-08 01:13:18,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-08 01:13:18,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:18,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:19,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830978175] [2025-02-08 01:13:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830978175] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321733067] [2025-02-08 01:13:19,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:19,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:19,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:19,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:19,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:13:19,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-08 01:13:19,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-08 01:13:19,102 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:19,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:19,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:13:19,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:19,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 84 [2025-02-08 01:13:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:20,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:20,380 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:13:20,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 48 [2025-02-08 01:13:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321733067] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:20,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2025-02-08 01:13:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035701825] [2025-02-08 01:13:20,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:20,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 01:13:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:20,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 01:13:20,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2025-02-08 01:13:20,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:20,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 176 transitions, 1526 flow. Second operand has 25 states, 25 states have (on average 7.6) internal successors, (190), 25 states have internal predecessors, (190), 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 01:13:20,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:20,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:20,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:26,943 INFO L124 PetriNetUnfolderBase]: 32651/47770 cut-off events. [2025-02-08 01:13:26,943 INFO L125 PetriNetUnfolderBase]: For 496508/496508 co-relation queries the response was YES. [2025-02-08 01:13:27,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202381 conditions, 47770 events. 32651/47770 cut-off events. For 496508/496508 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 319080 event pairs, 5559 based on Foata normal form. 7/47777 useless extension candidates. Maximal degree in co-relation 202325. Up to 9285 conditions per place. [2025-02-08 01:13:27,469 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 454 selfloop transitions, 190 changer transitions 69/714 dead transitions. [2025-02-08 01:13:27,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 714 transitions, 7524 flow [2025-02-08 01:13:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 01:13:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 01:13:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 423 transitions. [2025-02-08 01:13:27,472 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43788819875776397 [2025-02-08 01:13:27,472 INFO L175 Difference]: Start difference. First operand has 123 places, 176 transitions, 1526 flow. Second operand 23 states and 423 transitions. [2025-02-08 01:13:27,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 714 transitions, 7524 flow [2025-02-08 01:13:32,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 714 transitions, 6711 flow, removed 396 selfloop flow, removed 7 redundant places. [2025-02-08 01:13:32,735 INFO L231 Difference]: Finished difference. Result has 148 places, 317 transitions, 3563 flow [2025-02-08 01:13:32,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3563, PETRI_PLACES=148, PETRI_TRANSITIONS=317} [2025-02-08 01:13:32,736 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2025-02-08 01:13:32,736 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 317 transitions, 3563 flow [2025-02-08 01:13:32,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.6) internal successors, (190), 25 states have internal predecessors, (190), 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 01:13:32,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:32,736 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:32,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:32,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-08 01:13:32,937 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:32,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash 733591507, now seen corresponding path program 4 times [2025-02-08 01:13:32,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:32,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067660732] [2025-02-08 01:13:32,937 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:32,948 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-08 01:13:32,968 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:32,968 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:32,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:33,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067660732] [2025-02-08 01:13:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067660732] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987202881] [2025-02-08 01:13:33,363 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:33,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:33,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:33,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:33,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:13:33,421 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-08 01:13:33,442 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:33,442 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:33,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:33,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:13:33,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:33,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 72 [2025-02-08 01:13:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:33,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:33,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:33,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 32 [2025-02-08 01:13:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:34,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987202881] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:34,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:34,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2025-02-08 01:13:34,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682741144] [2025-02-08 01:13:34,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:34,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 01:13:34,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:34,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 01:13:34,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-02-08 01:13:34,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:34,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 317 transitions, 3563 flow. Second operand has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 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 01:13:34,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:34,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:34,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:39,885 INFO L124 PetriNetUnfolderBase]: 35043/51200 cut-off events. [2025-02-08 01:13:39,888 INFO L125 PetriNetUnfolderBase]: For 652206/652206 co-relation queries the response was YES. [2025-02-08 01:13:40,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242048 conditions, 51200 events. 35043/51200 cut-off events. For 652206/652206 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 344420 event pairs, 10103 based on Foata normal form. 6/51206 useless extension candidates. Maximal degree in co-relation 241981. Up to 17390 conditions per place. [2025-02-08 01:13:40,619 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 419 selfloop transitions, 132 changer transitions 109/661 dead transitions. [2025-02-08 01:13:40,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 661 transitions, 8632 flow [2025-02-08 01:13:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 01:13:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 01:13:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 345 transitions. [2025-02-08 01:13:40,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4323308270676692 [2025-02-08 01:13:40,625 INFO L175 Difference]: Start difference. First operand has 148 places, 317 transitions, 3563 flow. Second operand 19 states and 345 transitions. [2025-02-08 01:13:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 661 transitions, 8632 flow [2025-02-08 01:13:46,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 661 transitions, 7591 flow, removed 508 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:46,376 INFO L231 Difference]: Finished difference. Result has 167 places, 344 transitions, 3749 flow [2025-02-08 01:13:46,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3749, PETRI_PLACES=167, PETRI_TRANSITIONS=344} [2025-02-08 01:13:46,379 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2025-02-08 01:13:46,379 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 344 transitions, 3749 flow [2025-02-08 01:13:46,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 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 01:13:46,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:46,380 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:46,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:46,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:46,581 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:46,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:46,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1534060317, now seen corresponding path program 5 times [2025-02-08 01:13:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892283106] [2025-02-08 01:13:46,582 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:46,591 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-08 01:13:46,617 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:46,618 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:46,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:47,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892283106] [2025-02-08 01:13:47,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892283106] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:47,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902374248] [2025-02-08 01:13:47,366 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:47,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:47,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 01:13:47,422 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-08 01:13:47,449 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:13:47,449 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:47,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:47,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:13:47,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:47,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 102 [2025-02-08 01:13:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:48,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:48,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:48,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2025-02-08 01:13:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902374248] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:48,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 28 [2025-02-08 01:13:48,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277857631] [2025-02-08 01:13:48,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:48,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 01:13:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:48,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 01:13:48,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2025-02-08 01:13:48,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:48,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 344 transitions, 3749 flow. Second operand has 28 states, 28 states have (on average 7.178571428571429) internal successors, (201), 28 states have internal predecessors, (201), 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 01:13:48,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:48,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:48,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:02,108 INFO L124 PetriNetUnfolderBase]: 68802/101463 cut-off events. [2025-02-08 01:14:02,109 INFO L125 PetriNetUnfolderBase]: For 1154940/1154940 co-relation queries the response was YES. [2025-02-08 01:14:03,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470091 conditions, 101463 events. 68802/101463 cut-off events. For 1154940/1154940 co-relation queries the response was YES. Maximal size of possible extension queue 3160. Compared 758530 event pairs, 10730 based on Foata normal form. 1/101464 useless extension candidates. Maximal degree in co-relation 470019. Up to 22602 conditions per place. [2025-02-08 01:14:03,648 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 570 selfloop transitions, 488 changer transitions 100/1159 dead transitions. [2025-02-08 01:14:03,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1159 transitions, 13623 flow [2025-02-08 01:14:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-08 01:14:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2025-02-08 01:14:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 658 transitions. [2025-02-08 01:14:03,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2025-02-08 01:14:03,653 INFO L175 Difference]: Start difference. First operand has 167 places, 344 transitions, 3749 flow. Second operand 42 states and 658 transitions. [2025-02-08 01:14:03,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1159 transitions, 13623 flow [2025-02-08 01:14:11,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 1159 transitions, 13119 flow, removed 188 selfloop flow, removed 7 redundant places. [2025-02-08 01:14:11,581 INFO L231 Difference]: Finished difference. Result has 223 places, 692 transitions, 9846 flow [2025-02-08 01:14:11,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=9846, PETRI_PLACES=223, PETRI_TRANSITIONS=692} [2025-02-08 01:14:11,582 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2025-02-08 01:14:11,582 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 692 transitions, 9846 flow [2025-02-08 01:14:11,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.178571428571429) internal successors, (201), 28 states have internal predecessors, (201), 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 01:14:11,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:11,583 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:11,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 01:14:11,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-08 01:14:11,784 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:11,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1158665131, now seen corresponding path program 6 times [2025-02-08 01:14:11,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:11,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484759648] [2025-02-08 01:14:11,788 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:11,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:11,796 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-08 01:14:11,820 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:14:11,820 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:14:11,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:12,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:12,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484759648] [2025-02-08 01:14:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484759648] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:12,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676762710] [2025-02-08 01:14:12,364 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:12,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:12,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:12,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:12,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 01:14:12,420 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-08 01:14:12,448 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:14:12,448 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:14:12,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:12,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:14:12,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:12,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 40 [2025-02-08 01:14:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:13,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:13,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:14:13,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 58 [2025-02-08 01:14:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676762710] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:13,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:13,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 26 [2025-02-08 01:14:13,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128532710] [2025-02-08 01:14:13,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:13,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 01:14:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:13,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 01:14:13,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2025-02-08 01:14:13,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:14:13,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 692 transitions, 9846 flow. Second operand has 26 states, 26 states have (on average 7.461538461538462) internal successors, (194), 26 states have internal predecessors, (194), 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 01:14:13,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:13,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:14:13,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand