/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread/reorder_2.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:46:52,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:46:52,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 23:46:52,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:46:52,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:46:52,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:46:52,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:46:52,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:46:52,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:46:52,361 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:46:52,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:46:52,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:46:52,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:46:52,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:46:52,363 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:46:52,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:46:52,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:46:52,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:46:52,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:46:52,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:46:52,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:46:52,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:46:52,364 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:46:52,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:46:52,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:46:52,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:46:52,598 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:46:52,598 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:46:52,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/reorder_2.i [2025-04-13 23:46:53,919 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3abecc6/03d6111a02b34d04969d87ace5ee0c7b/FLAG683fc5030 [2025-04-13 23:46:54,214 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:46:54,215 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i [2025-04-13 23:46:54,232 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3abecc6/03d6111a02b34d04969d87ace5ee0c7b/FLAG683fc5030 [2025-04-13 23:46:54,919 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3abecc6/03d6111a02b34d04969d87ace5ee0c7b [2025-04-13 23:46:54,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:46:54,922 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:46:54,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:46:54,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:46:54,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:46:54,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:46:54" (1/1) ... [2025-04-13 23:46:54,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726fc33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:54, skipping insertion in model container [2025-04-13 23:46:54,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:46:54" (1/1) ... [2025-04-13 23:46:54,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:46:55,365 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i[60219,60232] [2025-04-13 23:46:55,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:46:55,377 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:46:55,448 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i[60219,60232] [2025-04-13 23:46:55,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:46:55,496 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:46:55,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55 WrapperNode [2025-04-13 23:46:55,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:46:55,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:46:55,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:46:55,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:46:55,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,538 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2025-04-13 23:46:55,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:46:55,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:46:55,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:46:55,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:46:55,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,565 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-04-13 23:46:55,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,569 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:46:55,576 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:46:55,576 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:46:55,576 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:46:55,576 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (1/1) ... [2025-04-13 23:46:55,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:46:55,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:46:55,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 23:46:55,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-04-13 23:46:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:46:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-04-13 23:46:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 23:46:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:46:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:46:55,623 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:46:55,743 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:46:55,745 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:46:55,909 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260: havoc main_~#setPool~0#1.base, main_~#setPool~0#1.offset; [2025-04-13 23:46:55,909 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260-1: SUMMARY for call ULTIMATE.dealloc(main_~#setPool~0#1.base, main_~#setPool~0#1.offset); srcloc: null [2025-04-13 23:46:55,910 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261: havoc main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset; [2025-04-13 23:46:55,910 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261-1: SUMMARY for call ULTIMATE.dealloc(main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset); srcloc: null [2025-04-13 23:46:55,910 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:46:55,911 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:46:55,911 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:46:56,078 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:46:56,093 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:46:56,097 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:46:56,105 WARN L179 LargeBlockEncoding]: Complex 3:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:46:56,136 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:46:56,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:46:56 BoogieIcfgContainer [2025-04-13 23:46:56,137 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:46:56,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:46:56,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:46:56,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:46:56,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:46:54" (1/3) ... [2025-04-13 23:46:56,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3386335f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:46:56, skipping insertion in model container [2025-04-13 23:46:56,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:46:55" (2/3) ... [2025-04-13 23:46:56,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3386335f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:46:56, skipping insertion in model container [2025-04-13 23:46:56,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:46:56" (3/3) ... [2025-04-13 23:46:56,145 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2025-04-13 23:46:56,155 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:46:56,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 21 locations, 32 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-13 23:46:56,156 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:46:56,206 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 23:46:56,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 36 transitions, 92 flow [2025-04-13 23:46:56,262 INFO L116 PetriNetUnfolderBase]: 17/61 cut-off events. [2025-04-13 23:46:56,265 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 23:46:56,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 61 events. 17/61 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 196 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 31. Up to 10 conditions per place. [2025-04-13 23:46:56,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 36 transitions, 92 flow [2025-04-13 23:46:56,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 28 transitions, 70 flow [2025-04-13 23:46:56,287 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:46:56,298 INFO L340 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;@6de7546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:46:56,298 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 23:46:56,304 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:46:56,304 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-13 23:46:56,304 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:46:56,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:46:56,305 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 23:46:56,308 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 23:46:56,311 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:46:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash 9768334, now seen corresponding path program 1 times [2025-04-13 23:46:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:46:56,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586250394] [2025-04-13 23:46:56,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:46:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:46:56,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 23:46:56,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 23:46:56,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:46:56,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:46:56,428 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:46:56,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 23:46:56,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 23:46:56,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:46:56,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:46:56,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:46:56,484 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:46:56,485 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 23:46:56,486 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 23:46:56,486 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 23:46:56,486 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 23:46:56,486 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:46:56,487 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:46:56,489 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:46:56,489 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 23:46:56,523 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 23:46:56,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 51 transitions, 146 flow [2025-04-13 23:46:56,569 INFO L116 PetriNetUnfolderBase]: 88/228 cut-off events. [2025-04-13 23:46:56,569 INFO L117 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2025-04-13 23:46:56,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 228 events. 88/228 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1017 event pairs, 1 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 154. Up to 39 conditions per place. [2025-04-13 23:46:56,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 51 transitions, 146 flow [2025-04-13 23:46:56,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 45 transitions, 134 flow [2025-04-13 23:46:56,574 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:46:56,575 INFO L340 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;@6de7546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:46:56,575 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 23:46:56,582 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:46:56,582 INFO L116 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-04-13 23:46:56,582 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-13 23:46:56,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:46:56,582 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 23:46:56,582 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 23:46:56,582 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:46:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2039611922, now seen corresponding path program 1 times [2025-04-13 23:46:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:46:56,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115832750] [2025-04-13 23:46:56,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:46:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:46:56,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:46:56,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:46:56,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:46:56,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:46:56,617 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 23:46:56,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:46:56,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:46:56,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:46:56,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 23:46:56,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 23:46:56,647 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 23:46:56,647 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 23:46:56,648 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 23:46:56,648 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 23:46:56,648 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 23:46:56,648 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 23:46:56,648 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:46:56,648 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:46:56,648 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 23:46:56,648 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 23:46:56,704 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-13 23:46:56,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 66 transitions, 204 flow [2025-04-13 23:46:56,796 INFO L116 PetriNetUnfolderBase]: 429/859 cut-off events. [2025-04-13 23:46:56,796 INFO L117 PetriNetUnfolderBase]: For 419/463 co-relation queries the response was YES. [2025-04-13 23:46:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 859 events. 429/859 cut-off events. For 419/463 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4446 event pairs, 32 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 628. Up to 192 conditions per place. [2025-04-13 23:46:56,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 66 transitions, 204 flow [2025-04-13 23:46:56,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 60 transitions, 192 flow [2025-04-13 23:46:56,806 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:46:56,807 INFO L340 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;@6de7546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:46:56,807 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 23:46:56,811 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:46:56,811 INFO L116 PetriNetUnfolderBase]: 0/40 cut-off events. [2025-04-13 23:46:56,812 INFO L117 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2025-04-13 23:46:56,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:46:56,812 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-13 23:46:56,813 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 23:46:56,814 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:46:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -104509246, now seen corresponding path program 1 times [2025-04-13 23:46:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:46:56,816 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105977802] [2025-04-13 23:46:56,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:46:56,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:46:56,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 23:46:56,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 23:46:56,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:46:56,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:46:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:46:56,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:46:56,986 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105977802] [2025-04-13 23:46:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105977802] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:46:56,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:46:56,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:46:56,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525152600] [2025-04-13 23:46:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:46:56,991 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 23:46:56,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:46:57,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 23:46:57,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 23:46:57,009 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 66 [2025-04-13 23:46:57,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2025-04-13 23:46:57,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:46:57,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 66 [2025-04-13 23:46:57,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand