/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/weaver/popl20-min-max-inc.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:07:22,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:07:22,405 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 [2025-04-14 01:07:22,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:07:22,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:07:22,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:07:22,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:07:22,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:07:22,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:07:22,444 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:07:22,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:07:22,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:07:22,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:07:22,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:07:22,444 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:07:22,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:07:22,445 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:07:22,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:07:22,446 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:07:22,446 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:07:22,446 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:07:22,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:07:22,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:07:22,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:07:22,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:07:22,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:07:22,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:07:22,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:07:22,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:07:22,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:07:22,448 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 [2025-04-14 01:07:22,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:07:22,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:07:22,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:07:22,727 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:07:22,727 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:07:22,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2025-04-14 01:07:24,127 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290c1cac5/9e79a1ea64e94eef979ea613e099cd66/FLAGd40fcf64f [2025-04-14 01:07:24,364 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:07:24,364 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2025-04-14 01:07:24,372 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290c1cac5/9e79a1ea64e94eef979ea613e099cd66/FLAGd40fcf64f [2025-04-14 01:07:25,178 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290c1cac5/9e79a1ea64e94eef979ea613e099cd66 [2025-04-14 01:07:25,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:07:25,182 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:07:25,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:07:25,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:07:25,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:07:25,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775f360a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25, skipping insertion in model container [2025-04-14 01:07:25,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:07:25,370 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[2682,2695] [2025-04-14 01:07:25,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:07:25,396 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:07:25,432 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[2682,2695] [2025-04-14 01:07:25,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:07:25,455 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:07:25,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25 WrapperNode [2025-04-14 01:07:25,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:07:25,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:07:25,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:07:25,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:07:25,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,494 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2025-04-14 01:07:25,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:07:25,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:07:25,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:07:25,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:07:25,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,515 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-14 01:07:25,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,525 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:07:25,541 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:07:25,541 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:07:25,541 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:07:25,541 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (1/1) ... [2025-04-14 01:07:25,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:07:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:07:25,571 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) [2025-04-14 01:07:25,574 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 [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 01:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:07:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:07:25,598 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 01:07:25,685 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:07:25,686 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:07:25,922 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:07:25,922 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:07:25,922 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:07:26,091 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:07:26,093 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:07:26,100 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:07:26,103 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:07:26,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:07:26 BoogieIcfgContainer [2025-04-14 01:07:26,104 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:07:26,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:07:26,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:07:26,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:07:26,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:07:25" (1/3) ... [2025-04-14 01:07:26,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7757a584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:07:26, skipping insertion in model container [2025-04-14 01:07:26,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:07:25" (2/3) ... [2025-04-14 01:07:26,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7757a584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:07:26, skipping insertion in model container [2025-04-14 01:07:26,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:07:26" (3/3) ... [2025-04-14 01:07:26,110 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2025-04-14 01:07:26,120 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:07:26,123 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc.wvr.c that has 5 procedures, 51 locations, 55 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-14 01:07:26,123 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:07:26,182 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-14 01:07:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 146 flow [2025-04-14 01:07:26,264 INFO L116 PetriNetUnfolderBase]: 9/55 cut-off events. [2025-04-14 01:07:26,266 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:07:26,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 55 events. 9/55 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 116 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-04-14 01:07:26,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 146 flow [2025-04-14 01:07:26,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 132 flow [2025-04-14 01:07:26,290 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:07:26,301 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;@4321450d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:07:26,301 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 01:07:26,324 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:07:26,324 INFO L116 PetriNetUnfolderBase]: 9/53 cut-off events. [2025-04-14 01:07:26,324 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:07:26,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:07:26,325 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, 1, 1, 1, 1] [2025-04-14 01:07:26,325 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:07:26,331 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:07:26,332 INFO L85 PathProgramCache]: Analyzing trace with hash 680450121, now seen corresponding path program 1 times [2025-04-14 01:07:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:07:26,340 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931140363] [2025-04-14 01:07:26,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:07:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:07:26,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-04-14 01:07:26,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-04-14 01:07:26,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:07:26,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:07:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:07:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:07:26,583 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931140363] [2025-04-14 01:07:26,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931140363] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:07:26,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:07:26,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:07:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467361205] [2025-04-14 01:07:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:07:26,589 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:07:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:07:26,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:07:26,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:07:26,606 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2025-04-14 01:07:26,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2025-04-14 01:07:26,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:07:26,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2025-04-14 01:07:26,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:07:27,971 INFO L116 PetriNetUnfolderBase]: 17677/22986 cut-off events. [2025-04-14 01:07:27,971 INFO L117 PetriNetUnfolderBase]: For 1077/1077 co-relation queries the response was YES. [2025-04-14 01:07:28,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47358 conditions, 22986 events. 17677/22986 cut-off events. For 1077/1077 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 106861 event pairs, 14542 based on Foata normal form. 0/19837 useless extension candidates. Maximal degree in co-relation 45275. Up to 22965 conditions per place. [2025-04-14 01:07:28,098 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 46 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2025-04-14 01:07:28,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 220 flow [2025-04-14 01:07:28,099 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:07:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:07:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2025-04-14 01:07:28,109 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4180790960451977 [2025-04-14 01:07:28,110 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 132 flow. Second operand 3 states and 74 transitions. [2025-04-14 01:07:28,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 220 flow [2025-04-14 01:07:28,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 204 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-04-14 01:07:28,132 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 112 flow [2025-04-14 01:07:28,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2025-04-14 01:07:28,135 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2025-04-14 01:07:28,136 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 112 flow [2025-04-14 01:07:28,136 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2025-04-14 01:07:28,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:07:28,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:07:28,136 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:07:28,136 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:07:28,137 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:07:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash -292702436, now seen corresponding path program 1 times [2025-04-14 01:07:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:07:28,137 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639741560] [2025-04-14 01:07:28,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:07:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:07:28,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-14 01:07:28,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-14 01:07:28,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:07:28,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:07:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:07:28,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:07:28,379 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639741560] [2025-04-14 01:07:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639741560] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:07:28,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:07:28,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:07:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843683608] [2025-04-14 01:07:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:07:28,381 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:07:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:07:28,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:07:28,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:07:28,382 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2025-04-14 01:07:28,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2025-04-14 01:07:28,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:07:28,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2025-04-14 01:07:28,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:07:29,642 INFO L116 PetriNetUnfolderBase]: 17677/22987 cut-off events. [2025-04-14 01:07:29,642 INFO L117 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-04-14 01:07:29,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46536 conditions, 22987 events. 17677/22987 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 106868 event pairs, 14542 based on Foata normal form. 0/19838 useless extension candidates. Maximal degree in co-relation 46526. Up to 22968 conditions per place. [2025-04-14 01:07:29,720 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 46 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2025-04-14 01:07:29,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 210 flow [2025-04-14 01:07:29,720 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:07:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:07:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-04-14 01:07:29,722 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4124293785310734 [2025-04-14 01:07:29,722 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 112 flow. Second operand 3 states and 73 transitions. [2025-04-14 01:07:29,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 210 flow [2025-04-14 01:07:29,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:07:29,724 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 123 flow [2025-04-14 01:07:29,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2025-04-14 01:07:29,724 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2025-04-14 01:07:29,724 INFO L485 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 123 flow [2025-04-14 01:07:29,724 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2025-04-14 01:07:29,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:07:29,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:07:29,727 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:07:29,727 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:07:29,728 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:07:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1836227243, now seen corresponding path program 1 times [2025-04-14 01:07:29,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:07:29,728 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704175855] [2025-04-14 01:07:29,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:07:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:07:29,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-14 01:07:29,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-14 01:07:29,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:07:29,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:07:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:07:30,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:07:30,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704175855] [2025-04-14 01:07:30,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704175855] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:07:30,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:07:30,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 01:07:30,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789343446] [2025-04-14 01:07:30,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:07:30,079 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:07:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:07:30,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:07:30,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-04-14 01:07:30,085 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 59 [2025-04-14 01:07:30,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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) [2025-04-14 01:07:30,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:07:30,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 59 [2025-04-14 01:07:30,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:07:35,139 INFO L116 PetriNetUnfolderBase]: 77856/101423 cut-off events. [2025-04-14 01:07:35,139 INFO L117 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2025-04-14 01:07:35,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204323 conditions, 101423 events. 77856/101423 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 2055. Compared 564683 event pairs, 8841 based on Foata normal form. 4/88023 useless extension candidates. Maximal degree in co-relation 204311. Up to 28758 conditions per place. [2025-04-14 01:07:35,453 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 386 selfloop transitions, 86 changer transitions 396/870 dead transitions. [2025-04-14 01:07:35,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 870 transitions, 3552 flow [2025-04-14 01:07:35,454 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-14 01:07:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-04-14 01:07:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1165 transitions. [2025-04-14 01:07:35,463 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4029747492217226 [2025-04-14 01:07:35,463 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 123 flow. Second operand 49 states and 1165 transitions. [2025-04-14 01:07:35,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 870 transitions, 3552 flow [2025-04-14 01:07:35,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 870 transitions, 3548 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-14 01:07:35,474 INFO L231 Difference]: Finished difference. Result has 136 places, 146 transitions, 755 flow [2025-04-14 01:07:35,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=755, PETRI_PLACES=136, PETRI_TRANSITIONS=146} [2025-04-14 01:07:35,475 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 78 predicate places. [2025-04-14 01:07:35,475 INFO L485 AbstractCegarLoop]: Abstraction has has 136 places, 146 transitions, 755 flow [2025-04-14 01:07:35,476 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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) [2025-04-14 01:07:35,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:07:35,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:07:35,476 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:07:35,476 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:07:35,477 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:07:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash -493256955, now seen corresponding path program 2 times [2025-04-14 01:07:35,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:07:35,477 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021803155] [2025-04-14 01:07:35,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:07:35,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:07:35,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-04-14 01:07:35,506 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 43 of 44 statements. [2025-04-14 01:07:35,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:07:35,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:07:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:07:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:07:35,854 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021803155] [2025-04-14 01:07:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021803155] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:07:35,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:07:35,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-14 01:07:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641964040] [2025-04-14 01:07:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:07:35,854 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:07:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:07:35,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:07:35,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:07:35,860 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 59 [2025-04-14 01:07:35,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 146 transitions, 755 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:07:35,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:07:35,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 59 [2025-04-14 01:07:35,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:07:48,436 INFO L116 PetriNetUnfolderBase]: 121678/158573 cut-off events. [2025-04-14 01:07:48,436 INFO L117 PetriNetUnfolderBase]: For 1906654/1906658 co-relation queries the response was YES. [2025-04-14 01:07:49,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616158 conditions, 158573 events. 121678/158573 cut-off events. For 1906654/1906658 co-relation queries the response was YES. Maximal size of possible extension queue 3259. Compared 916524 event pairs, 20644 based on Foata normal form. 6/138860 useless extension candidates. Maximal degree in co-relation 616110. Up to 68350 conditions per place. [2025-04-14 01:07:49,723 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 777 selfloop transitions, 371 changer transitions 259/1409 dead transitions. [2025-04-14 01:07:49,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1409 transitions, 10596 flow [2025-04-14 01:07:49,723 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-04-14 01:07:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2025-04-14 01:07:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 1616 transitions. [2025-04-14 01:07:49,727 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.35571208452564385 [2025-04-14 01:07:49,727 INFO L175 Difference]: Start difference. First operand has 136 places, 146 transitions, 755 flow. Second operand 77 states and 1616 transitions. [2025-04-14 01:07:49,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1409 transitions, 10596 flow [2025-04-14 01:08:12,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1409 transitions, 9588 flow, removed 504 selfloop flow, removed 14 redundant places. [2025-04-14 01:08:12,194 INFO L231 Difference]: Finished difference. Result has 212 places, 513 transitions, 4542 flow [2025-04-14 01:08:12,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=4542, PETRI_PLACES=212, PETRI_TRANSITIONS=513} [2025-04-14 01:08:12,195 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 154 predicate places. [2025-04-14 01:08:12,195 INFO L485 AbstractCegarLoop]: Abstraction has has 212 places, 513 transitions, 4542 flow [2025-04-14 01:08:12,195 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:08:12,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:08:12,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:08:12,196 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 01:08:12,196 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:08:12,196 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:08:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 480080869, now seen corresponding path program 3 times [2025-04-14 01:08:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:08:12,196 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508207422] [2025-04-14 01:08:12,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:08:12,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:08:12,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 2 equivalence classes. [2025-04-14 01:08:12,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 43 of 44 statements. [2025-04-14 01:08:12,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:08:12,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:08:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:08:12,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:08:12,401 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508207422] [2025-04-14 01:08:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508207422] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:08:12,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:08:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 01:08:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659976715] [2025-04-14 01:08:12,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:08:12,401 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:08:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:08:12,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:08:12,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-04-14 01:08:12,408 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 59 [2025-04-14 01:08:12,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 513 transitions, 4542 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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) [2025-04-14 01:08:12,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:08:12,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 59 [2025-04-14 01:08:12,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:08:41,662 INFO L116 PetriNetUnfolderBase]: 211362/275108 cut-off events. [2025-04-14 01:08:41,662 INFO L117 PetriNetUnfolderBase]: For 6227343/6227343 co-relation queries the response was YES. [2025-04-14 01:08:43,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551488 conditions, 275108 events. 211362/275108 cut-off events. For 6227343/6227343 co-relation queries the response was YES. Maximal size of possible extension queue 5594. Compared 1698825 event pairs, 19501 based on Foata normal form. 5/236806 useless extension candidates. Maximal degree in co-relation 1551415. Up to 102560 conditions per place. [2025-04-14 01:08:44,667 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 819 selfloop transitions, 311 changer transitions 271/1403 dead transitions. [2025-04-14 01:08:44,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1403 transitions, 14857 flow [2025-04-14 01:08:44,668 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-14 01:08:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-04-14 01:08:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1036 transitions. [2025-04-14 01:08:44,670 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.487758945386064 [2025-04-14 01:08:44,670 INFO L175 Difference]: Start difference. First operand has 212 places, 513 transitions, 4542 flow. Second operand 36 states and 1036 transitions. [2025-04-14 01:08:44,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1403 transitions, 14857 flow [2025-04-14 01:11:36,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1403 transitions, 13337 flow, removed 760 selfloop flow, removed 5 redundant places. [2025-04-14 01:11:36,852 INFO L231 Difference]: Finished difference. Result has 251 places, 622 transitions, 6067 flow [2025-04-14 01:11:36,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=3780, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6067, PETRI_PLACES=251, PETRI_TRANSITIONS=622} [2025-04-14 01:11:36,853 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 193 predicate places. [2025-04-14 01:11:36,853 INFO L485 AbstractCegarLoop]: Abstraction has has 251 places, 622 transitions, 6067 flow [2025-04-14 01:11:36,854 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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) [2025-04-14 01:11:36,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:11:36,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:11:36,854 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:11:36,854 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:11:36,854 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:11:36,855 INFO L85 PathProgramCache]: Analyzing trace with hash -789866051, now seen corresponding path program 4 times [2025-04-14 01:11:36,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:11:36,855 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008618806] [2025-04-14 01:11:36,855 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:11:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:11:36,866 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-14 01:11:36,877 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 37 of 44 statements. [2025-04-14 01:11:36,877 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:11:36,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:11:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:11:36,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:11:36,938 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008618806] [2025-04-14 01:11:36,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008618806] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:11:36,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:11:36,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:11:36,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287628200] [2025-04-14 01:11:36,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:11:36,939 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:11:36,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:11:36,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:11:36,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:11:36,941 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 59 [2025-04-14 01:11:36,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 622 transitions, 6067 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2025-04-14 01:11:36,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:11:36,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 59 [2025-04-14 01:11:36,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand