/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-more-array-sum2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:13:29,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:13:29,653 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 01:13:29,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:13:29,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:13:29,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:13:29,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:13:29,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:13:29,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:13:29,688 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:13:29,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:13:29,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:13:29,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:13:29,689 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:13:29,690 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:29,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:13:29,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:29,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:13:29,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:13:29,692 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 01:13:29,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:13:29,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:13:29,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:13:29,921 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:13:29,922 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:13:29,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2025-04-14 01:13:31,192 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f978681bd/beb6bd1b2ee94a76bfc0d6c15e686a33/FLAGb287abb87 [2025-04-14 01:13:31,411 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:13:31,412 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2025-04-14 01:13:31,420 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f978681bd/beb6bd1b2ee94a76bfc0d6c15e686a33/FLAGb287abb87 [2025-04-14 01:13:32,242 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f978681bd/beb6bd1b2ee94a76bfc0d6c15e686a33 [2025-04-14 01:13:32,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:13:32,245 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:13:32,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:13:32,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:13:32,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:13:32,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2405ea43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32, skipping insertion in model container [2025-04-14 01:13:32,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:13:32,396 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-more-array-sum2.wvr.c[2638,2651] [2025-04-14 01:13:32,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:13:32,412 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:13:32,438 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-more-array-sum2.wvr.c[2638,2651] [2025-04-14 01:13:32,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:13:32,453 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:13:32,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32 WrapperNode [2025-04-14 01:13:32,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:13:32,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:13:32,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:13:32,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:13:32,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,481 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 249 [2025-04-14 01:13:32,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:13:32,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:13:32,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:13:32,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:13:32,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,507 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 01:13:32,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,520 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:13:32,527 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:13:32,528 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:13:32,528 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:13:32,528 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (1/1) ... [2025-04-14 01:13:32,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:32,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:32,554 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 01:13:32,556 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 01:13:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:13:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:13:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:13:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:13:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:13:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:13:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:13:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:13:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:13:32,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:13:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:13:32,574 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 01:13:32,655 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:13:32,657 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:13:32,981 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:13:32,981 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:13:32,981 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:13:33,322 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:13:33,323 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:13:33,325 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:13:33,328 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:13:33,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:13:33 BoogieIcfgContainer [2025-04-14 01:13:33,329 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:13:33,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:13:33,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:13:33,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:13:33,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:13:32" (1/3) ... [2025-04-14 01:13:33,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370cfab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:13:33, skipping insertion in model container [2025-04-14 01:13:33,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:32" (2/3) ... [2025-04-14 01:13:33,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370cfab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:13:33, skipping insertion in model container [2025-04-14 01:13:33,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:13:33" (3/3) ... [2025-04-14 01:13:33,351 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2025-04-14 01:13:33,362 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:13:33,363 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum2.wvr.c that has 4 procedures, 27 locations, 31 edges, 1 initial locations, 5 loop locations, and 1 error locations. [2025-04-14 01:13:33,364 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:13:33,412 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 01:13:33,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 89 flow [2025-04-14 01:13:33,465 INFO L116 PetriNetUnfolderBase]: 8/31 cut-off events. [2025-04-14 01:13:33,466 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 01:13:33,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 31 events. 8/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-04-14 01:13:33,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 89 flow [2025-04-14 01:13:33,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 78 flow [2025-04-14 01:13:33,480 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:13:33,491 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;@5b2e2e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:13:33,492 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 01:13:33,508 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:13:33,509 INFO L116 PetriNetUnfolderBase]: 8/29 cut-off events. [2025-04-14 01:13:33,509 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 01:13:33,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:33,509 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:33,509 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 1 more)] === [2025-04-14 01:13:33,513 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash -827428978, now seen corresponding path program 1 times [2025-04-14 01:13:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:33,521 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610719309] [2025-04-14 01:13:33,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:33,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-14 01:13:33,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-14 01:13:33,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:33,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:33,757 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 01:13:33,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:33,758 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610719309] [2025-04-14 01:13:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610719309] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:33,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:13:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992386910] [2025-04-14 01:13:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:33,765 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:33,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:33,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:33,783 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:33,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 01:13:33,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:33,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:33,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:33,932 INFO L116 PetriNetUnfolderBase]: 512/705 cut-off events. [2025-04-14 01:13:33,932 INFO L117 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-04-14 01:13:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 705 events. 512/705 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1977 event pairs, 306 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 1304. Up to 701 conditions per place. [2025-04-14 01:13:33,942 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2025-04-14 01:13:33,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 134 flow [2025-04-14 01:13:33,943 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2025-04-14 01:13:33,952 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-04-14 01:13:33,953 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 78 flow. Second operand 3 states and 39 transitions. [2025-04-14 01:13:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 134 flow [2025-04-14 01:13:33,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 01:13:33,959 INFO L231 Difference]: Finished difference. Result has 28 places, 29 transitions, 66 flow [2025-04-14 01:13:33,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=29} [2025-04-14 01:13:33,965 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2025-04-14 01:13:33,965 INFO L485 AbstractCegarLoop]: Abstraction has has 28 places, 29 transitions, 66 flow [2025-04-14 01:13:33,966 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 01:13:33,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:33,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:33,966 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:13:33,966 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 1 more)] === [2025-04-14 01:13:33,966 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2072649291, now seen corresponding path program 1 times [2025-04-14 01:13:33,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:33,967 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493338938] [2025-04-14 01:13:33,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:33,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:33,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 01:13:34,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 01:13:34,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:34,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:34,096 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 01:13:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:34,097 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493338938] [2025-04-14 01:13:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493338938] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:34,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:34,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:13:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576215359] [2025-04-14 01:13:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:34,098 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:34,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:34,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:34,098 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:34,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 01:13:34,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:34,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:34,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:34,195 INFO L116 PetriNetUnfolderBase]: 475/668 cut-off events. [2025-04-14 01:13:34,195 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-14 01:13:34,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 668 events. 475/668 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1861 event pairs, 306 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1347. Up to 664 conditions per place. [2025-04-14 01:13:34,198 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2025-04-14 01:13:34,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 120 flow [2025-04-14 01:13:34,199 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2025-04-14 01:13:34,199 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2025-04-14 01:13:34,199 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 66 flow. Second operand 3 states and 38 transitions. [2025-04-14 01:13:34,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 120 flow [2025-04-14 01:13:34,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:34,200 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 65 flow [2025-04-14 01:13:34,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2025-04-14 01:13:34,201 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2025-04-14 01:13:34,201 INFO L485 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 65 flow [2025-04-14 01:13:34,201 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 01:13:34,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:34,201 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] [2025-04-14 01:13:34,201 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:13:34,201 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 1 more)] === [2025-04-14 01:13:34,201 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1016135496, now seen corresponding path program 1 times [2025-04-14 01:13:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:34,202 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781489160] [2025-04-14 01:13:34,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:34,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:13:34,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:13:34,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:34,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:34,395 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 01:13:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:34,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781489160] [2025-04-14 01:13:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781489160] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:34,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:34,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:13:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831502351] [2025-04-14 01:13:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:34,396 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:13:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:34,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:13:34,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:13:34,397 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:34,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 01:13:34,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:34,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:34,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:34,520 INFO L116 PetriNetUnfolderBase]: 475/671 cut-off events. [2025-04-14 01:13:34,520 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-14 01:13:34,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 671 events. 475/671 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1863 event pairs, 306 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 1347. Up to 669 conditions per place. [2025-04-14 01:13:34,527 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 26 selfloop transitions, 4 changer transitions 1/31 dead transitions. [2025-04-14 01:13:34,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 133 flow [2025-04-14 01:13:34,527 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 01:13:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 01:13:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2025-04-14 01:13:34,528 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3382352941176471 [2025-04-14 01:13:34,528 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 65 flow. Second operand 4 states and 46 transitions. [2025-04-14 01:13:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 133 flow [2025-04-14 01:13:34,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:34,530 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 90 flow [2025-04-14 01:13:34,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2025-04-14 01:13:34,530 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2025-04-14 01:13:34,530 INFO L485 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 90 flow [2025-04-14 01:13:34,531 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 01:13:34,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:34,531 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] [2025-04-14 01:13:34,531 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:13:34,531 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 1 more)] === [2025-04-14 01:13:34,531 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1427255855, now seen corresponding path program 1 times [2025-04-14 01:13:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:34,533 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157491102] [2025-04-14 01:13:34,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:34,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:34,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:13:34,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:34,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:34,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:35,690 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157491102] [2025-04-14 01:13:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157491102] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:35,690 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235359162] [2025-04-14 01:13:35,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:35,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:35,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:35,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:13:35,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-14 01:13:35,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:13:35,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:35,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:35,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:35,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:13:35,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:13:35,820 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:13:35,857 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:35,898 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:13:35,898 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:13:35,925 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:36,202 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:13:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:36,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:13:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235359162] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:13:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 26 [2025-04-14 01:13:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993190295] [2025-04-14 01:13:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:36,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:13:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:36,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:13:36,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2025-04-14 01:13:36,430 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:36,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:36,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:36,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:36,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:37,048 INFO L116 PetriNetUnfolderBase]: 861/1257 cut-off events. [2025-04-14 01:13:37,048 INFO L117 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-04-14 01:13:37,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2576 conditions, 1257 events. 861/1257 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4902 event pairs, 7 based on Foata normal form. 1/1002 useless extension candidates. Maximal degree in co-relation 2554. Up to 773 conditions per place. [2025-04-14 01:13:37,056 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 91 selfloop transitions, 30 changer transitions 1/122 dead transitions. [2025-04-14 01:13:37,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 122 transitions, 539 flow [2025-04-14 01:13:37,057 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:13:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:13:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2025-04-14 01:13:37,058 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2025-04-14 01:13:37,058 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 90 flow. Second operand 11 states and 154 transitions. [2025-04-14 01:13:37,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 122 transitions, 539 flow [2025-04-14 01:13:37,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 122 transitions, 531 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-04-14 01:13:37,060 INFO L231 Difference]: Finished difference. Result has 45 places, 58 transitions, 243 flow [2025-04-14 01:13:37,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=243, PETRI_PLACES=45, PETRI_TRANSITIONS=58} [2025-04-14 01:13:37,063 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2025-04-14 01:13:37,063 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 58 transitions, 243 flow [2025-04-14 01:13:37,063 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:37,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:37,063 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] [2025-04-14 01:13:37,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-14 01:13:37,268 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:37,268 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 1 more)] === [2025-04-14 01:13:37,269 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash 752886351, now seen corresponding path program 2 times [2025-04-14 01:13:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:37,270 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421537429] [2025-04-14 01:13:37,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:13:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:37,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:37,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:37,313 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:13:37,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:37,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:37,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421537429] [2025-04-14 01:13:37,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421537429] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:37,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:37,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379076321] [2025-04-14 01:13:37,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:37,681 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:37,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:37,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:37,682 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:37,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 243 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:37,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:37,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:37,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:38,020 INFO L116 PetriNetUnfolderBase]: 914/1349 cut-off events. [2025-04-14 01:13:38,020 INFO L117 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2025-04-14 01:13:38,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3808 conditions, 1349 events. 914/1349 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5294 event pairs, 129 based on Foata normal form. 1/1150 useless extension candidates. Maximal degree in co-relation 3773. Up to 1190 conditions per place. [2025-04-14 01:13:38,028 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 74 selfloop transitions, 26 changer transitions 1/101 dead transitions. [2025-04-14 01:13:38,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 101 transitions, 595 flow [2025-04-14 01:13:38,028 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:13:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:13:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2025-04-14 01:13:38,030 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3058823529411765 [2025-04-14 01:13:38,031 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 243 flow. Second operand 10 states and 104 transitions. [2025-04-14 01:13:38,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 101 transitions, 595 flow [2025-04-14 01:13:38,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 595 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-14 01:13:38,037 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 426 flow [2025-04-14 01:13:38,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=426, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2025-04-14 01:13:38,038 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2025-04-14 01:13:38,038 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 426 flow [2025-04-14 01:13:38,038 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:38,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:38,038 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] [2025-04-14 01:13:38,038 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:13:38,038 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 1 more)] === [2025-04-14 01:13:38,039 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1001825575, now seen corresponding path program 3 times [2025-04-14 01:13:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:38,039 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176287584] [2025-04-14 01:13:38,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:13:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:38,049 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:38,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:38,066 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:13:38,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:38,533 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176287584] [2025-04-14 01:13:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176287584] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:38,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276378628] [2025-04-14 01:13:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:38,534 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:38,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:38,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:38,535 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:38,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 426 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:38,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:38,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:38,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:38,943 INFO L116 PetriNetUnfolderBase]: 1035/1536 cut-off events. [2025-04-14 01:13:38,943 INFO L117 PetriNetUnfolderBase]: For 1365/1365 co-relation queries the response was YES. [2025-04-14 01:13:38,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5053 conditions, 1536 events. 1035/1536 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6314 event pairs, 133 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 5009. Up to 1322 conditions per place. [2025-04-14 01:13:38,951 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 90 selfloop transitions, 54 changer transitions 1/145 dead transitions. [2025-04-14 01:13:38,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 145 transitions, 1041 flow [2025-04-14 01:13:38,952 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:13:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:13:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2025-04-14 01:13:38,953 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3315508021390374 [2025-04-14 01:13:38,953 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 426 flow. Second operand 11 states and 124 transitions. [2025-04-14 01:13:38,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 145 transitions, 1041 flow [2025-04-14 01:13:38,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 145 transitions, 1021 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:38,960 INFO L231 Difference]: Finished difference. Result has 76 places, 112 transitions, 839 flow [2025-04-14 01:13:38,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=839, PETRI_PLACES=76, PETRI_TRANSITIONS=112} [2025-04-14 01:13:38,961 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2025-04-14 01:13:38,961 INFO L485 AbstractCegarLoop]: Abstraction has has 76 places, 112 transitions, 839 flow [2025-04-14 01:13:38,961 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:38,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:38,961 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] [2025-04-14 01:13:38,961 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:13:38,961 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:38,962 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash 638916331, now seen corresponding path program 4 times [2025-04-14 01:13:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:38,962 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321052049] [2025-04-14 01:13:38,962 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:13:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:38,970 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:38,988 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:38,988 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:13:38,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:39,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:39,564 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321052049] [2025-04-14 01:13:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321052049] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:39,564 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535963049] [2025-04-14 01:13:39,564 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:13:39,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:39,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:39,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:13:39,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-14 01:13:39,614 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:39,637 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:39,637 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:13:39,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:39,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:13:39,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:13:39,646 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:13:39,667 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:39,692 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:13:39,692 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:13:39,716 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:39,919 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:13:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:39,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:13:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:40,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535963049] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:40,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:13:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 25 [2025-04-14 01:13:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917673365] [2025-04-14 01:13:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:40,124 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:13:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:40,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:13:40,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2025-04-14 01:13:40,125 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:40,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 112 transitions, 839 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:40,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:40,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:40,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:40,788 INFO L116 PetriNetUnfolderBase]: 1394/2069 cut-off events. [2025-04-14 01:13:40,788 INFO L117 PetriNetUnfolderBase]: For 3838/3838 co-relation queries the response was YES. [2025-04-14 01:13:40,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8279 conditions, 2069 events. 1394/2069 cut-off events. For 3838/3838 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9150 event pairs, 167 based on Foata normal form. 1/1793 useless extension candidates. Maximal degree in co-relation 8226. Up to 1505 conditions per place. [2025-04-14 01:13:40,801 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 128 selfloop transitions, 112 changer transitions 1/241 dead transitions. [2025-04-14 01:13:40,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 241 transitions, 2116 flow [2025-04-14 01:13:40,802 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:13:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:13:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2025-04-14 01:13:40,803 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3755656108597285 [2025-04-14 01:13:40,803 INFO L175 Difference]: Start difference. First operand has 76 places, 112 transitions, 839 flow. Second operand 13 states and 166 transitions. [2025-04-14 01:13:40,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 241 transitions, 2116 flow [2025-04-14 01:13:40,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 241 transitions, 2078 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:40,822 INFO L231 Difference]: Finished difference. Result has 95 places, 189 transitions, 1767 flow [2025-04-14 01:13:40,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1767, PETRI_PLACES=95, PETRI_TRANSITIONS=189} [2025-04-14 01:13:40,822 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2025-04-14 01:13:40,822 INFO L485 AbstractCegarLoop]: Abstraction has has 95 places, 189 transitions, 1767 flow [2025-04-14 01:13:40,824 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:40,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:40,824 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] [2025-04-14 01:13:40,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-14 01:13:41,028 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-04-14 01:13:41,028 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:41,029 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2091040589, now seen corresponding path program 5 times [2025-04-14 01:13:41,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:41,029 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903617172] [2025-04-14 01:13:41,029 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:13:41,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:41,041 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:41,058 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:41,058 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:13:41,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:41,610 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903617172] [2025-04-14 01:13:41,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903617172] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:41,611 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819052260] [2025-04-14 01:13:41,611 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:13:41,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:41,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:13:41,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-14 01:13:41,665 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:41,686 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:41,686 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:13:41,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:41,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-14 01:13:41,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:13:41,747 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:41,980 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:13:41,980 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2025-04-14 01:13:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:41,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:13:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:42,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819052260] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:42,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:13:42,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 9] total 22 [2025-04-14 01:13:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392437052] [2025-04-14 01:13:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:42,129 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:13:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:42,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:13:42,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2025-04-14 01:13:42,129 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:42,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 189 transitions, 1767 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:42,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:42,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:42,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:42,988 INFO L116 PetriNetUnfolderBase]: 1533/2277 cut-off events. [2025-04-14 01:13:42,989 INFO L117 PetriNetUnfolderBase]: For 6880/6880 co-relation queries the response was YES. [2025-04-14 01:13:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11159 conditions, 2277 events. 1533/2277 cut-off events. For 6880/6880 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10244 event pairs, 80 based on Foata normal form. 1/1968 useless extension candidates. Maximal degree in co-relation 11095. Up to 1385 conditions per place. [2025-04-14 01:13:43,005 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 117 selfloop transitions, 167 changer transitions 1/285 dead transitions. [2025-04-14 01:13:43,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 285 transitions, 2979 flow [2025-04-14 01:13:43,005 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:13:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:13:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 182 transitions. [2025-04-14 01:13:43,006 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-04-14 01:13:43,006 INFO L175 Difference]: Start difference. First operand has 95 places, 189 transitions, 1767 flow. Second operand 14 states and 182 transitions. [2025-04-14 01:13:43,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 285 transitions, 2979 flow [2025-04-14 01:13:43,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 285 transitions, 2873 flow, removed 53 selfloop flow, removed 0 redundant places. [2025-04-14 01:13:43,040 INFO L231 Difference]: Finished difference. Result has 116 places, 227 transitions, 2570 flow [2025-04-14 01:13:43,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2570, PETRI_PLACES=116, PETRI_TRANSITIONS=227} [2025-04-14 01:13:43,041 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2025-04-14 01:13:43,041 INFO L485 AbstractCegarLoop]: Abstraction has has 116 places, 227 transitions, 2570 flow [2025-04-14 01:13:43,041 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:43,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:43,041 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] [2025-04-14 01:13:43,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-14 01:13:43,242 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:43,243 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:43,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -596164265, now seen corresponding path program 6 times [2025-04-14 01:13:43,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:43,243 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886029279] [2025-04-14 01:13:43,243 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:13:43,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:43,250 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:43,257 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:43,257 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:13:43,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:43,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:43,531 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886029279] [2025-04-14 01:13:43,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886029279] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:43,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:43,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:43,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736381237] [2025-04-14 01:13:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:43,531 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:43,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:43,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:43,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:43,532 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:43,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 227 transitions, 2570 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:43,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:43,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:43,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:44,206 INFO L116 PetriNetUnfolderBase]: 2164/3195 cut-off events. [2025-04-14 01:13:44,206 INFO L117 PetriNetUnfolderBase]: For 15528/15528 co-relation queries the response was YES. [2025-04-14 01:13:44,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19658 conditions, 3195 events. 2164/3195 cut-off events. For 15528/15528 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15414 event pairs, 98 based on Foata normal form. 1/2777 useless extension candidates. Maximal degree in co-relation 19582. Up to 1995 conditions per place. [2025-04-14 01:13:44,233 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 200 selfloop transitions, 231 changer transitions 1/432 dead transitions. [2025-04-14 01:13:44,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 432 transitions, 5503 flow [2025-04-14 01:13:44,234 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-14 01:13:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-14 01:13:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 190 transitions. [2025-04-14 01:13:44,235 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2025-04-14 01:13:44,235 INFO L175 Difference]: Start difference. First operand has 116 places, 227 transitions, 2570 flow. Second operand 15 states and 190 transitions. [2025-04-14 01:13:44,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 432 transitions, 5503 flow [2025-04-14 01:13:44,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 432 transitions, 5262 flow, removed 94 selfloop flow, removed 3 redundant places. [2025-04-14 01:13:44,325 INFO L231 Difference]: Finished difference. Result has 136 places, 361 transitions, 4931 flow [2025-04-14 01:13:44,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4931, PETRI_PLACES=136, PETRI_TRANSITIONS=361} [2025-04-14 01:13:44,326 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 104 predicate places. [2025-04-14 01:13:44,326 INFO L485 AbstractCegarLoop]: Abstraction has has 136 places, 361 transitions, 4931 flow [2025-04-14 01:13:44,326 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:44,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:44,326 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] [2025-04-14 01:13:44,326 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-14 01:13:44,326 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:44,326 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1318380951, now seen corresponding path program 7 times [2025-04-14 01:13:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:44,327 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21957680] [2025-04-14 01:13:44,327 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:13:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:44,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:13:44,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:44,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:44,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:44,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:44,679 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21957680] [2025-04-14 01:13:44,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21957680] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:44,679 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5841058] [2025-04-14 01:13:44,679 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:13:44,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:44,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:44,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:13:44,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-14 01:13:44,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:13:44,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:44,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:44,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:44,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:13:44,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:13:44,771 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:13:44,786 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:44,813 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:13:44,813 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:13:44,834 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:45,016 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:13:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:45,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:13:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:45,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5841058] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:45,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:13:45,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 25 [2025-04-14 01:13:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758744013] [2025-04-14 01:13:45,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:45,171 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:13:45,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:45,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:13:45,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2025-04-14 01:13:45,172 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:45,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 361 transitions, 4931 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:45,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:45,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:45,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:45,861 INFO L116 PetriNetUnfolderBase]: 2258/3360 cut-off events. [2025-04-14 01:13:45,861 INFO L117 PetriNetUnfolderBase]: For 23323/23323 co-relation queries the response was YES. [2025-04-14 01:13:45,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23391 conditions, 3360 events. 2258/3360 cut-off events. For 23323/23323 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 16539 event pairs, 205 based on Foata normal form. 1/2918 useless extension candidates. Maximal degree in co-relation 23304. Up to 2744 conditions per place. [2025-04-14 01:13:45,889 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 300 selfloop transitions, 127 changer transitions 1/428 dead transitions. [2025-04-14 01:13:45,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 428 transitions, 6463 flow [2025-04-14 01:13:45,889 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:13:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:13:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2025-04-14 01:13:45,890 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2025-04-14 01:13:45,890 INFO L175 Difference]: Start difference. First operand has 136 places, 361 transitions, 4931 flow. Second operand 9 states and 121 transitions. [2025-04-14 01:13:45,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 428 transitions, 6463 flow [2025-04-14 01:13:46,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 428 transitions, 6175 flow, removed 115 selfloop flow, removed 3 redundant places. [2025-04-14 01:13:46,085 INFO L231 Difference]: Finished difference. Result has 145 places, 382 transitions, 5333 flow [2025-04-14 01:13:46,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5333, PETRI_PLACES=145, PETRI_TRANSITIONS=382} [2025-04-14 01:13:46,086 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2025-04-14 01:13:46,086 INFO L485 AbstractCegarLoop]: Abstraction has has 145 places, 382 transitions, 5333 flow [2025-04-14 01:13:46,087 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:46,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:46,087 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] [2025-04-14 01:13:46,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-14 01:13:46,288 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:46,288 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:46,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash 296528855, now seen corresponding path program 8 times [2025-04-14 01:13:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:46,289 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699291490] [2025-04-14 01:13:46,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:13:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:46,294 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:46,304 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:46,304 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:13:46,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:46,531 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699291490] [2025-04-14 01:13:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699291490] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:46,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864720733] [2025-04-14 01:13:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:46,531 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:46,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:46,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:46,532 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:46,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 382 transitions, 5333 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:46,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:46,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:46,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:47,155 INFO L116 PetriNetUnfolderBase]: 2258/3359 cut-off events. [2025-04-14 01:13:47,155 INFO L117 PetriNetUnfolderBase]: For 21377/21377 co-relation queries the response was YES. [2025-04-14 01:13:47,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22741 conditions, 3359 events. 2258/3359 cut-off events. For 21377/21377 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 16501 event pairs, 217 based on Foata normal form. 1/2917 useless extension candidates. Maximal degree in co-relation 22648. Up to 3120 conditions per place. [2025-04-14 01:13:47,188 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 364 selfloop transitions, 74 changer transitions 1/439 dead transitions. [2025-04-14 01:13:47,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 439 transitions, 6711 flow [2025-04-14 01:13:47,189 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:13:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:13:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2025-04-14 01:13:47,189 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3558823529411765 [2025-04-14 01:13:47,189 INFO L175 Difference]: Start difference. First operand has 145 places, 382 transitions, 5333 flow. Second operand 10 states and 121 transitions. [2025-04-14 01:13:47,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 439 transitions, 6711 flow [2025-04-14 01:13:47,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 439 transitions, 6629 flow, removed 27 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:47,335 INFO L231 Difference]: Finished difference. Result has 160 places, 406 transitions, 5923 flow [2025-04-14 01:13:47,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5274, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5923, PETRI_PLACES=160, PETRI_TRANSITIONS=406} [2025-04-14 01:13:47,336 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2025-04-14 01:13:47,336 INFO L485 AbstractCegarLoop]: Abstraction has has 160 places, 406 transitions, 5923 flow [2025-04-14 01:13:47,336 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:47,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:47,336 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] [2025-04-14 01:13:47,336 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 01:13:47,336 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:47,337 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2084237083, now seen corresponding path program 9 times [2025-04-14 01:13:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:47,337 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331108466] [2025-04-14 01:13:47,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:13:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:47,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:47,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:47,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:13:47,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:47,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331108466] [2025-04-14 01:13:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331108466] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033341610] [2025-04-14 01:13:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:47,596 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:47,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:47,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:47,596 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:47,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 406 transitions, 5923 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:47,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:47,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:47,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:48,190 INFO L116 PetriNetUnfolderBase]: 2296/3424 cut-off events. [2025-04-14 01:13:48,190 INFO L117 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2025-04-14 01:13:48,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23359 conditions, 3424 events. 2296/3424 cut-off events. For 21480/21480 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 16962 event pairs, 218 based on Foata normal form. 1/2966 useless extension candidates. Maximal degree in co-relation 23257. Up to 3252 conditions per place. [2025-04-14 01:13:48,214 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 373 selfloop transitions, 63 changer transitions 1/437 dead transitions. [2025-04-14 01:13:48,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 437 transitions, 6992 flow [2025-04-14 01:13:48,215 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:13:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:13:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2025-04-14 01:13:48,216 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3176470588235294 [2025-04-14 01:13:48,216 INFO L175 Difference]: Start difference. First operand has 160 places, 406 transitions, 5923 flow. Second operand 10 states and 108 transitions. [2025-04-14 01:13:48,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 437 transitions, 6992 flow [2025-04-14 01:13:48,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 437 transitions, 6896 flow, removed 47 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:48,386 INFO L231 Difference]: Finished difference. Result has 172 places, 415 transitions, 6118 flow [2025-04-14 01:13:48,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5827, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6118, PETRI_PLACES=172, PETRI_TRANSITIONS=415} [2025-04-14 01:13:48,387 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 140 predicate places. [2025-04-14 01:13:48,387 INFO L485 AbstractCegarLoop]: Abstraction has has 172 places, 415 transitions, 6118 flow [2025-04-14 01:13:48,388 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:48,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:48,388 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] [2025-04-14 01:13:48,388 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-14 01:13:48,388 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:48,388 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash -64559453, now seen corresponding path program 10 times [2025-04-14 01:13:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:48,388 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750331957] [2025-04-14 01:13:48,388 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:13:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:48,396 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:48,410 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:48,411 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:13:48,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:48,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:48,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750331957] [2025-04-14 01:13:48,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750331957] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:48,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235529446] [2025-04-14 01:13:48,732 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:13:48,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:48,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:48,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:13:48,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-14 01:13:48,783 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:48,802 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:48,803 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:13:48,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:48,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:13:48,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:13:48,813 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:13:48,831 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:48,847 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:13:48,848 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:13:48,869 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:49,020 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:13:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:49,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:13:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235529446] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:49,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:13:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 10] total 24 [2025-04-14 01:13:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523910098] [2025-04-14 01:13:49,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:49,174 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:13:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:49,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:13:49,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:13:49,175 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:49,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 415 transitions, 6118 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:49,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:49,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:49,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:49,951 INFO L116 PetriNetUnfolderBase]: 2338/3497 cut-off events. [2025-04-14 01:13:49,951 INFO L117 PetriNetUnfolderBase]: For 23510/23510 co-relation queries the response was YES. [2025-04-14 01:13:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24389 conditions, 3497 events. 2338/3497 cut-off events. For 23510/23510 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 17486 event pairs, 215 based on Foata normal form. 1/3023 useless extension candidates. Maximal degree in co-relation 24281. Up to 2947 conditions per place. [2025-04-14 01:13:49,978 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 325 selfloop transitions, 136 changer transitions 1/462 dead transitions. [2025-04-14 01:13:49,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 462 transitions, 7385 flow [2025-04-14 01:13:49,979 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:13:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:13:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2025-04-14 01:13:49,979 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3764705882352941 [2025-04-14 01:13:49,979 INFO L175 Difference]: Start difference. First operand has 172 places, 415 transitions, 6118 flow. Second operand 10 states and 128 transitions. [2025-04-14 01:13:49,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 462 transitions, 7385 flow [2025-04-14 01:13:50,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 462 transitions, 7231 flow, removed 43 selfloop flow, removed 4 redundant places. [2025-04-14 01:13:50,154 INFO L231 Difference]: Finished difference. Result has 180 places, 422 transitions, 6431 flow [2025-04-14 01:13:50,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6431, PETRI_PLACES=180, PETRI_TRANSITIONS=422} [2025-04-14 01:13:50,154 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2025-04-14 01:13:50,154 INFO L485 AbstractCegarLoop]: Abstraction has has 180 places, 422 transitions, 6431 flow [2025-04-14 01:13:50,154 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:13:50,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:50,155 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] [2025-04-14 01:13:50,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-14 01:13:50,355 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-04-14 01:13:50,355 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:50,356 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash -27691401, now seen corresponding path program 11 times [2025-04-14 01:13:50,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:50,356 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70698282] [2025-04-14 01:13:50,356 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:13:50,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:50,365 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:50,375 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:50,375 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:13:50,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:50,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:50,786 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70698282] [2025-04-14 01:13:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70698282] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:50,787 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662011896] [2025-04-14 01:13:50,787 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:13:50,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:50,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:13:50,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-14 01:13:50,833 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:50,852 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:50,853 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:13:50,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:50,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-14 01:13:50,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:13:50,902 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:13:51,081 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:13:51,081 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2025-04-14 01:13:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:51,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:13:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662011896] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:13:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:13:51,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 9] total 24 [2025-04-14 01:13:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691191921] [2025-04-14 01:13:51,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:51,235 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:13:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:51,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:13:51,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:13:51,235 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:51,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 422 transitions, 6431 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:51,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:51,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:51,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:52,055 INFO L116 PetriNetUnfolderBase]: 2382/3574 cut-off events. [2025-04-14 01:13:52,055 INFO L117 PetriNetUnfolderBase]: For 27045/27045 co-relation queries the response was YES. [2025-04-14 01:13:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25792 conditions, 3574 events. 2382/3574 cut-off events. For 27045/27045 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 18045 event pairs, 256 based on Foata normal form. 1/3084 useless extension candidates. Maximal degree in co-relation 25679. Up to 3020 conditions per place. [2025-04-14 01:13:52,091 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 331 selfloop transitions, 137 changer transitions 1/469 dead transitions. [2025-04-14 01:13:52,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 469 transitions, 7710 flow [2025-04-14 01:13:52,091 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:13:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:13:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2025-04-14 01:13:52,093 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-04-14 01:13:52,093 INFO L175 Difference]: Start difference. First operand has 180 places, 422 transitions, 6431 flow. Second operand 10 states and 130 transitions. [2025-04-14 01:13:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 469 transitions, 7710 flow [2025-04-14 01:13:52,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 469 transitions, 7532 flow, removed 32 selfloop flow, removed 3 redundant places. [2025-04-14 01:13:52,295 INFO L231 Difference]: Finished difference. Result has 188 places, 427 transitions, 6643 flow [2025-04-14 01:13:52,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6253, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6643, PETRI_PLACES=188, PETRI_TRANSITIONS=427} [2025-04-14 01:13:52,296 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 156 predicate places. [2025-04-14 01:13:52,296 INFO L485 AbstractCegarLoop]: Abstraction has has 188 places, 427 transitions, 6643 flow [2025-04-14 01:13:52,296 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:52,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:52,296 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] [2025-04-14 01:13:52,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-14 01:13:52,501 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:13:52,501 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:52,501 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1413476395, now seen corresponding path program 12 times [2025-04-14 01:13:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:52,501 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62280630] [2025-04-14 01:13:52,502 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:13:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:52,508 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:52,515 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:52,515 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:13:52,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:52,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:52,763 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62280630] [2025-04-14 01:13:52,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62280630] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:52,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:52,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123232825] [2025-04-14 01:13:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:52,763 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:52,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:52,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:52,764 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:52,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 427 transitions, 6643 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:52,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:52,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:52,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:53,448 INFO L116 PetriNetUnfolderBase]: 2778/4152 cut-off events. [2025-04-14 01:13:53,448 INFO L117 PetriNetUnfolderBase]: For 34109/34109 co-relation queries the response was YES. [2025-04-14 01:13:53,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30372 conditions, 4152 events. 2778/4152 cut-off events. For 34109/34109 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 21512 event pairs, 210 based on Foata normal form. 1/3554 useless extension candidates. Maximal degree in co-relation 30254. Up to 3211 conditions per place. [2025-04-14 01:13:53,478 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 349 selfloop transitions, 202 changer transitions 1/552 dead transitions. [2025-04-14 01:13:53,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 552 transitions, 9107 flow [2025-04-14 01:13:53,478 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:13:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:13:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2025-04-14 01:13:53,481 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3602941176470588 [2025-04-14 01:13:53,482 INFO L175 Difference]: Start difference. First operand has 188 places, 427 transitions, 6643 flow. Second operand 12 states and 147 transitions. [2025-04-14 01:13:53,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 552 transitions, 9107 flow [2025-04-14 01:13:53,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 552 transitions, 8929 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-04-14 01:13:53,681 INFO L231 Difference]: Finished difference. Result has 200 places, 504 transitions, 8372 flow [2025-04-14 01:13:53,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8372, PETRI_PLACES=200, PETRI_TRANSITIONS=504} [2025-04-14 01:13:53,682 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 168 predicate places. [2025-04-14 01:13:53,682 INFO L485 AbstractCegarLoop]: Abstraction has has 200 places, 504 transitions, 8372 flow [2025-04-14 01:13:53,682 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:53,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:53,682 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] [2025-04-14 01:13:53,682 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-14 01:13:53,682 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:53,683 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash -987289897, now seen corresponding path program 13 times [2025-04-14 01:13:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:53,683 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670187808] [2025-04-14 01:13:53,683 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:13:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:53,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:13:53,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:53,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:53,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:54,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:54,019 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670187808] [2025-04-14 01:13:54,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670187808] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:54,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-14 01:13:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938774088] [2025-04-14 01:13:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:54,019 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:13:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:54,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:13:54,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:13:54,020 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:54,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 504 transitions, 8372 flow. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:13:54,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:54,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:54,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:54,957 INFO L116 PetriNetUnfolderBase]: 3266/4868 cut-off events. [2025-04-14 01:13:54,957 INFO L117 PetriNetUnfolderBase]: For 51314/51314 co-relation queries the response was YES. [2025-04-14 01:13:54,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39247 conditions, 4868 events. 3266/4868 cut-off events. For 51314/51314 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 25783 event pairs, 234 based on Foata normal form. 1/4198 useless extension candidates. Maximal degree in co-relation 39121. Up to 3489 conditions per place. [2025-04-14 01:13:54,993 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 360 selfloop transitions, 369 changer transitions 1/730 dead transitions. [2025-04-14 01:13:54,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 730 transitions, 13022 flow [2025-04-14 01:13:54,994 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-14 01:13:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-14 01:13:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 211 transitions. [2025-04-14 01:13:54,994 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.326625386996904 [2025-04-14 01:13:54,994 INFO L175 Difference]: Start difference. First operand has 200 places, 504 transitions, 8372 flow. Second operand 19 states and 211 transitions. [2025-04-14 01:13:54,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 730 transitions, 13022 flow [2025-04-14 01:13:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 730 transitions, 12645 flow, removed 147 selfloop flow, removed 4 redundant places. [2025-04-14 01:13:55,323 INFO L231 Difference]: Finished difference. Result has 223 places, 668 transitions, 12272 flow [2025-04-14 01:13:55,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12272, PETRI_PLACES=223, PETRI_TRANSITIONS=668} [2025-04-14 01:13:55,324 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2025-04-14 01:13:55,324 INFO L485 AbstractCegarLoop]: Abstraction has has 223 places, 668 transitions, 12272 flow [2025-04-14 01:13:55,324 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:13:55,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:55,324 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] [2025-04-14 01:13:55,324 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-14 01:13:55,325 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:55,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:55,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1738581289, now seen corresponding path program 14 times [2025-04-14 01:13:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:55,325 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728307618] [2025-04-14 01:13:55,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:13:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:55,330 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:55,335 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:55,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:13:55,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:55,626 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728307618] [2025-04-14 01:13:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728307618] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:55,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227208385] [2025-04-14 01:13:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:55,626 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:55,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:55,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:55,627 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:55,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 668 transitions, 12272 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:55,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:55,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:55,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:56,647 INFO L116 PetriNetUnfolderBase]: 3524/5267 cut-off events. [2025-04-14 01:13:56,647 INFO L117 PetriNetUnfolderBase]: For 71526/71526 co-relation queries the response was YES. [2025-04-14 01:13:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45871 conditions, 5267 events. 3524/5267 cut-off events. For 71526/71526 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 28533 event pairs, 241 based on Foata normal form. 1/4519 useless extension candidates. Maximal degree in co-relation 45735. Up to 4296 conditions per place. [2025-04-14 01:13:56,696 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 529 selfloop transitions, 229 changer transitions 1/759 dead transitions. [2025-04-14 01:13:56,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 759 transitions, 15079 flow [2025-04-14 01:13:56,696 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:13:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:13:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2025-04-14 01:13:56,697 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3445378151260504 [2025-04-14 01:13:56,697 INFO L175 Difference]: Start difference. First operand has 223 places, 668 transitions, 12272 flow. Second operand 14 states and 164 transitions. [2025-04-14 01:13:56,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 759 transitions, 15079 flow [2025-04-14 01:13:57,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 759 transitions, 14730 flow, removed 143 selfloop flow, removed 4 redundant places. [2025-04-14 01:13:57,161 INFO L231 Difference]: Finished difference. Result has 238 places, 715 transitions, 13687 flow [2025-04-14 01:13:57,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=11933, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13687, PETRI_PLACES=238, PETRI_TRANSITIONS=715} [2025-04-14 01:13:57,161 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2025-04-14 01:13:57,161 INFO L485 AbstractCegarLoop]: Abstraction has has 238 places, 715 transitions, 13687 flow [2025-04-14 01:13:57,161 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:57,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:57,161 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] [2025-04-14 01:13:57,162 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-14 01:13:57,162 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:57,162 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1345624589, now seen corresponding path program 15 times [2025-04-14 01:13:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:57,162 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677692551] [2025-04-14 01:13:57,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:13:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:57,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:57,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:13:57,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:13:57,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:57,486 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677692551] [2025-04-14 01:13:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677692551] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:13:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364200437] [2025-04-14 01:13:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:57,486 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:13:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:57,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:13:57,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:13:57,487 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:57,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 715 transitions, 13687 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:57,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:57,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:57,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:58,668 INFO L116 PetriNetUnfolderBase]: 3635/5447 cut-off events. [2025-04-14 01:13:58,668 INFO L117 PetriNetUnfolderBase]: For 92856/92856 co-relation queries the response was YES. [2025-04-14 01:13:58,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49889 conditions, 5447 events. 3635/5447 cut-off events. For 92856/92856 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 29738 event pairs, 273 based on Foata normal form. 1/4677 useless extension candidates. Maximal degree in co-relation 49747. Up to 4176 conditions per place. [2025-04-14 01:13:58,715 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 513 selfloop transitions, 253 changer transitions 1/767 dead transitions. [2025-04-14 01:13:58,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 767 transitions, 15753 flow [2025-04-14 01:13:58,716 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:13:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:13:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 165 transitions. [2025-04-14 01:13:58,717 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.34663865546218486 [2025-04-14 01:13:58,717 INFO L175 Difference]: Start difference. First operand has 238 places, 715 transitions, 13687 flow. Second operand 14 states and 165 transitions. [2025-04-14 01:13:58,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 767 transitions, 15753 flow [2025-04-14 01:13:59,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 767 transitions, 15348 flow, removed 141 selfloop flow, removed 5 redundant places. [2025-04-14 01:13:59,312 INFO L231 Difference]: Finished difference. Result has 249 places, 723 transitions, 14318 flow [2025-04-14 01:13:59,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=13284, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14318, PETRI_PLACES=249, PETRI_TRANSITIONS=723} [2025-04-14 01:13:59,312 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2025-04-14 01:13:59,312 INFO L485 AbstractCegarLoop]: Abstraction has has 249 places, 723 transitions, 14318 flow [2025-04-14 01:13:59,312 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:13:59,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:59,312 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] [2025-04-14 01:13:59,313 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-14 01:13:59,313 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:13:59,313 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2037482521, now seen corresponding path program 16 times [2025-04-14 01:13:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:59,313 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159008353] [2025-04-14 01:13:59,313 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:13:59,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:59,318 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:13:59,323 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:13:59,324 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:13:59,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:59,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159008353] [2025-04-14 01:13:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159008353] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:59,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:59,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-14 01:13:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340586065] [2025-04-14 01:13:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:59,732 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:13:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:59,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:13:59,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:13:59,733 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:13:59,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 723 transitions, 14318 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 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 01:13:59,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:59,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:13:59,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:01,055 INFO L116 PetriNetUnfolderBase]: 3699/5561 cut-off events. [2025-04-14 01:14:01,055 INFO L117 PetriNetUnfolderBase]: For 107448/107448 co-relation queries the response was YES. [2025-04-14 01:14:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51800 conditions, 5561 events. 3699/5561 cut-off events. For 107448/107448 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 30712 event pairs, 338 based on Foata normal form. 1/4765 useless extension candidates. Maximal degree in co-relation 51655. Up to 5275 conditions per place. [2025-04-14 01:14:01,099 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 616 selfloop transitions, 145 changer transitions 1/762 dead transitions. [2025-04-14 01:14:01,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 762 transitions, 16190 flow [2025-04-14 01:14:01,099 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:14:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:14:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2025-04-14 01:14:01,100 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3315508021390374 [2025-04-14 01:14:01,100 INFO L175 Difference]: Start difference. First operand has 249 places, 723 transitions, 14318 flow. Second operand 11 states and 124 transitions. [2025-04-14 01:14:01,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 762 transitions, 16190 flow [2025-04-14 01:14:01,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 762 transitions, 15967 flow, removed 33 selfloop flow, removed 9 redundant places. [2025-04-14 01:14:01,715 INFO L231 Difference]: Finished difference. Result has 252 places, 737 transitions, 14663 flow [2025-04-14 01:14:01,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=14095, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14663, PETRI_PLACES=252, PETRI_TRANSITIONS=737} [2025-04-14 01:14:01,717 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2025-04-14 01:14:01,717 INFO L485 AbstractCegarLoop]: Abstraction has has 252 places, 737 transitions, 14663 flow [2025-04-14 01:14:01,717 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 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 01:14:01,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:01,717 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] [2025-04-14 01:14:01,718 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-14 01:14:01,718 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:01,718 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1791347813, now seen corresponding path program 17 times [2025-04-14 01:14:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:01,718 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444211866] [2025-04-14 01:14:01,718 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:01,723 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:01,730 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:01,731 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:01,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:02,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444211866] [2025-04-14 01:14:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444211866] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:02,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23331417] [2025-04-14 01:14:02,038 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:02,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:02,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:02,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-14 01:14:02,084 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:02,101 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:02,101 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:02,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:02,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:02,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:02,106 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:02,122 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:02,140 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:02,140 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:02,156 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:02,298 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:14:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:02,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23331417] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:02,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 26 [2025-04-14 01:14:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120287385] [2025-04-14 01:14:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:02,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:02,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:02,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2025-04-14 01:14:02,430 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:02,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 737 transitions, 14663 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:02,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:02,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:02,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:03,757 INFO L116 PetriNetUnfolderBase]: 3903/5873 cut-off events. [2025-04-14 01:14:03,757 INFO L117 PetriNetUnfolderBase]: For 113293/113293 co-relation queries the response was YES. [2025-04-14 01:14:03,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54625 conditions, 5873 events. 3903/5873 cut-off events. For 113293/113293 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 32969 event pairs, 274 based on Foata normal form. 1/5038 useless extension candidates. Maximal degree in co-relation 54478. Up to 4502 conditions per place. [2025-04-14 01:14:03,814 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 460 selfloop transitions, 380 changer transitions 1/841 dead transitions. [2025-04-14 01:14:03,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 841 transitions, 17751 flow [2025-04-14 01:14:03,815 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:14:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:14:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2025-04-14 01:14:03,816 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.36199095022624433 [2025-04-14 01:14:03,816 INFO L175 Difference]: Start difference. First operand has 252 places, 737 transitions, 14663 flow. Second operand 13 states and 160 transitions. [2025-04-14 01:14:03,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 841 transitions, 17751 flow [2025-04-14 01:14:04,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 841 transitions, 17460 flow, removed 50 selfloop flow, removed 5 redundant places. [2025-04-14 01:14:04,576 INFO L231 Difference]: Finished difference. Result has 264 places, 796 transitions, 16750 flow [2025-04-14 01:14:04,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=14386, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16750, PETRI_PLACES=264, PETRI_TRANSITIONS=796} [2025-04-14 01:14:04,577 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2025-04-14 01:14:04,577 INFO L485 AbstractCegarLoop]: Abstraction has has 264 places, 796 transitions, 16750 flow [2025-04-14 01:14:04,577 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:04,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:04,577 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] [2025-04-14 01:14:04,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-14 01:14:04,778 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:04,778 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:04,778 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash -142118309, now seen corresponding path program 18 times [2025-04-14 01:14:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:04,778 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166066529] [2025-04-14 01:14:04,779 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:14:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:04,783 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:04,791 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:04,791 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:14:04,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:05,005 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166066529] [2025-04-14 01:14:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166066529] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:14:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600528403] [2025-04-14 01:14:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:05,006 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:14:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:05,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:14:05,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:14:05,006 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:05,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 796 transitions, 16750 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:05,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:05,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:05,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:06,498 INFO L116 PetriNetUnfolderBase]: 3954/5968 cut-off events. [2025-04-14 01:14:06,499 INFO L117 PetriNetUnfolderBase]: For 128154/128154 co-relation queries the response was YES. [2025-04-14 01:14:06,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59022 conditions, 5968 events. 3954/5968 cut-off events. For 128154/128154 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 33823 event pairs, 332 based on Foata normal form. 2/5114 useless extension candidates. Maximal degree in co-relation 58869. Up to 5746 conditions per place. [2025-04-14 01:14:06,567 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 751 selfloop transitions, 79 changer transitions 1/831 dead transitions. [2025-04-14 01:14:06,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 831 transitions, 18801 flow [2025-04-14 01:14:06,567 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:14:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:14:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2025-04-14 01:14:06,568 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3205882352941177 [2025-04-14 01:14:06,568 INFO L175 Difference]: Start difference. First operand has 264 places, 796 transitions, 16750 flow. Second operand 10 states and 109 transitions. [2025-04-14 01:14:06,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 831 transitions, 18801 flow [2025-04-14 01:14:07,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 831 transitions, 18521 flow, removed 116 selfloop flow, removed 3 redundant places. [2025-04-14 01:14:07,640 INFO L231 Difference]: Finished difference. Result has 272 places, 803 transitions, 16854 flow [2025-04-14 01:14:07,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=16471, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16854, PETRI_PLACES=272, PETRI_TRANSITIONS=803} [2025-04-14 01:14:07,641 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2025-04-14 01:14:07,641 INFO L485 AbstractCegarLoop]: Abstraction has has 272 places, 803 transitions, 16854 flow [2025-04-14 01:14:07,641 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:07,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:07,641 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] [2025-04-14 01:14:07,641 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-14 01:14:07,641 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:07,641 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash -217114145, now seen corresponding path program 19 times [2025-04-14 01:14:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:07,641 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913880187] [2025-04-14 01:14:07,642 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:07,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:14:07,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:07,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:07,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:07,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:07,912 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913880187] [2025-04-14 01:14:07,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913880187] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:07,912 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260213084] [2025-04-14 01:14:07,913 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:07,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:07,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-14 01:14:07,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:14:07,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:07,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:07,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:07,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:07,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:07,996 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:08,013 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:08,027 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:08,028 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:08,052 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:08,203 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:14:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:08,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260213084] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:08,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:08,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 26 [2025-04-14 01:14:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233587405] [2025-04-14 01:14:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:08,350 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:08,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:08,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2025-04-14 01:14:08,351 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:08,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 803 transitions, 16854 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:08,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:08,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:08,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:09,686 INFO L116 PetriNetUnfolderBase]: 3972/6007 cut-off events. [2025-04-14 01:14:09,687 INFO L117 PetriNetUnfolderBase]: For 127243/127243 co-relation queries the response was YES. [2025-04-14 01:14:09,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58921 conditions, 6007 events. 3972/6007 cut-off events. For 127243/127243 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 34191 event pairs, 310 based on Foata normal form. 1/5148 useless extension candidates. Maximal degree in co-relation 58764. Up to 5264 conditions per place. [2025-04-14 01:14:09,751 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 631 selfloop transitions, 218 changer transitions 1/850 dead transitions. [2025-04-14 01:14:09,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 850 transitions, 18955 flow [2025-04-14 01:14:09,751 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:14:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:14:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2025-04-14 01:14:09,752 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3850267379679144 [2025-04-14 01:14:09,752 INFO L175 Difference]: Start difference. First operand has 272 places, 803 transitions, 16854 flow. Second operand 11 states and 144 transitions. [2025-04-14 01:14:09,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 850 transitions, 18955 flow [2025-04-14 01:14:10,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 850 transitions, 18692 flow, removed 53 selfloop flow, removed 7 redundant places. [2025-04-14 01:14:10,727 INFO L231 Difference]: Finished difference. Result has 278 places, 811 transitions, 17317 flow [2025-04-14 01:14:10,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=16593, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17317, PETRI_PLACES=278, PETRI_TRANSITIONS=811} [2025-04-14 01:14:10,728 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2025-04-14 01:14:10,728 INFO L485 AbstractCegarLoop]: Abstraction has has 278 places, 811 transitions, 17317 flow [2025-04-14 01:14:10,728 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:10,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:10,728 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] [2025-04-14 01:14:10,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-14 01:14:10,932 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-04-14 01:14:10,932 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:10,932 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2109083491, now seen corresponding path program 20 times [2025-04-14 01:14:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:10,932 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087853239] [2025-04-14 01:14:10,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:14:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:10,937 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:10,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:10,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:14:10,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:11,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:11,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087853239] [2025-04-14 01:14:11,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087853239] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:11,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:11,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:14:11,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593030006] [2025-04-14 01:14:11,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:11,146 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:14:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:11,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:14:11,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:14:11,147 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:11,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 811 transitions, 17317 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:11,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:11,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:11,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:12,365 INFO L116 PetriNetUnfolderBase]: 4005/6065 cut-off events. [2025-04-14 01:14:12,365 INFO L117 PetriNetUnfolderBase]: For 135189/135189 co-relation queries the response was YES. [2025-04-14 01:14:12,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60407 conditions, 6065 events. 4005/6065 cut-off events. For 135189/135189 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 34599 event pairs, 356 based on Foata normal form. 1/5192 useless extension candidates. Maximal degree in co-relation 60247. Up to 5868 conditions per place. [2025-04-14 01:14:12,440 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 760 selfloop transitions, 81 changer transitions 1/842 dead transitions. [2025-04-14 01:14:12,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 842 transitions, 19428 flow [2025-04-14 01:14:12,441 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:14:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:14:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2025-04-14 01:14:12,441 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3029411764705882 [2025-04-14 01:14:12,441 INFO L175 Difference]: Start difference. First operand has 278 places, 811 transitions, 17317 flow. Second operand 10 states and 103 transitions. [2025-04-14 01:14:12,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 842 transitions, 19428 flow [2025-04-14 01:14:13,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 842 transitions, 19150 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-04-14 01:14:13,488 INFO L231 Difference]: Finished difference. Result has 283 places, 822 transitions, 17567 flow [2025-04-14 01:14:13,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=17044, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17567, PETRI_PLACES=283, PETRI_TRANSITIONS=822} [2025-04-14 01:14:13,489 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2025-04-14 01:14:13,489 INFO L485 AbstractCegarLoop]: Abstraction has has 283 places, 822 transitions, 17567 flow [2025-04-14 01:14:13,489 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:13,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:13,489 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] [2025-04-14 01:14:13,489 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-04-14 01:14:13,489 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:13,489 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash 638687371, now seen corresponding path program 21 times [2025-04-14 01:14:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:13,490 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383196343] [2025-04-14 01:14:13,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:14:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:13,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:13,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:13,501 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:14:13,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:13,672 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383196343] [2025-04-14 01:14:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383196343] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:13,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:13,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:14:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456296119] [2025-04-14 01:14:13,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:13,672 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:14:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:13,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:14:13,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:14:13,673 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:13,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 822 transitions, 17567 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:14,839 INFO L116 PetriNetUnfolderBase]: 4005/6063 cut-off events. [2025-04-14 01:14:14,839 INFO L117 PetriNetUnfolderBase]: For 132451/132451 co-relation queries the response was YES. [2025-04-14 01:14:14,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60385 conditions, 6063 events. 4005/6063 cut-off events. For 132451/132451 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 34599 event pairs, 358 based on Foata normal form. 2/5191 useless extension candidates. Maximal degree in co-relation 60221. Up to 5841 conditions per place. [2025-04-14 01:14:14,906 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 777 selfloop transitions, 78 changer transitions 1/856 dead transitions. [2025-04-14 01:14:14,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 856 transitions, 19669 flow [2025-04-14 01:14:14,906 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:14:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:14:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2025-04-14 01:14:14,907 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31176470588235294 [2025-04-14 01:14:14,907 INFO L175 Difference]: Start difference. First operand has 283 places, 822 transitions, 17567 flow. Second operand 10 states and 106 transitions. [2025-04-14 01:14:14,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 856 transitions, 19669 flow [2025-04-14 01:14:15,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 856 transitions, 19499 flow, removed 52 selfloop flow, removed 3 redundant places. [2025-04-14 01:14:15,969 INFO L231 Difference]: Finished difference. Result has 291 places, 829 transitions, 17788 flow [2025-04-14 01:14:15,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=17409, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17788, PETRI_PLACES=291, PETRI_TRANSITIONS=829} [2025-04-14 01:14:15,970 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2025-04-14 01:14:15,970 INFO L485 AbstractCegarLoop]: Abstraction has has 291 places, 829 transitions, 17788 flow [2025-04-14 01:14:15,970 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:15,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:15,970 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] [2025-04-14 01:14:15,970 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-04-14 01:14:15,970 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:15,971 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 769932087, now seen corresponding path program 22 times [2025-04-14 01:14:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:15,971 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703923828] [2025-04-14 01:14:15,971 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:14:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:15,975 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:15,981 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:15,981 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:14:15,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:16,305 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703923828] [2025-04-14 01:14:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703923828] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:16,305 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902578849] [2025-04-14 01:14:16,305 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:14:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:16,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:16,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-14 01:14:16,361 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:16,383 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:16,383 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:14:16,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:16,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:16,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:16,394 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:16,414 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:16,437 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:16,438 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:16,460 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:16,612 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:14:16,613 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 27 [2025-04-14 01:14:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:16,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902578849] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:16,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 24 [2025-04-14 01:14:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526358721] [2025-04-14 01:14:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:16,759 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:16,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:16,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:14:16,760 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:16,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 829 transitions, 17788 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:16,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:16,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:16,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:18,407 INFO L116 PetriNetUnfolderBase]: 4548/6858 cut-off events. [2025-04-14 01:14:18,407 INFO L117 PetriNetUnfolderBase]: For 156332/156332 co-relation queries the response was YES. [2025-04-14 01:14:18,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67916 conditions, 6858 events. 4548/6858 cut-off events. For 156332/156332 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 39727 event pairs, 356 based on Foata normal form. 1/5854 useless extension candidates. Maximal degree in co-relation 67750. Up to 4845 conditions per place. [2025-04-14 01:14:18,469 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 565 selfloop transitions, 414 changer transitions 1/980 dead transitions. [2025-04-14 01:14:18,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 980 transitions, 22237 flow [2025-04-14 01:14:18,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:14:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:14:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 173 transitions. [2025-04-14 01:14:18,470 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3914027149321267 [2025-04-14 01:14:18,470 INFO L175 Difference]: Start difference. First operand has 291 places, 829 transitions, 17788 flow. Second operand 13 states and 173 transitions. [2025-04-14 01:14:18,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 980 transitions, 22237 flow [2025-04-14 01:14:19,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 980 transitions, 21993 flow, removed 48 selfloop flow, removed 6 redundant places. [2025-04-14 01:14:19,543 INFO L231 Difference]: Finished difference. Result has 302 places, 899 transitions, 20377 flow [2025-04-14 01:14:19,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=17544, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=361, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20377, PETRI_PLACES=302, PETRI_TRANSITIONS=899} [2025-04-14 01:14:19,544 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2025-04-14 01:14:19,544 INFO L485 AbstractCegarLoop]: Abstraction has has 302 places, 899 transitions, 20377 flow [2025-04-14 01:14:19,544 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:19,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:19,545 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] [2025-04-14 01:14:19,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-14 01:14:19,745 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-04-14 01:14:19,745 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:19,746 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1429924533, now seen corresponding path program 23 times [2025-04-14 01:14:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:19,746 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446894494] [2025-04-14 01:14:19,746 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:19,750 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:19,756 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:19,757 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:19,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:20,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446894494] [2025-04-14 01:14:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446894494] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:20,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012989160] [2025-04-14 01:14:20,118 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:20,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:20,120 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:20,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-14 01:14:20,171 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:20,188 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:20,188 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:20,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:20,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:20,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:20,198 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:20,216 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:20,229 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:20,230 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:20,245 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:20,371 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:14:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:20,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012989160] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:20,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 26 [2025-04-14 01:14:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501537872] [2025-04-14 01:14:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:20,510 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:20,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:20,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2025-04-14 01:14:20,511 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:20,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 899 transitions, 20377 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:20,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:20,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:20,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:22,215 INFO L116 PetriNetUnfolderBase]: 4548/6856 cut-off events. [2025-04-14 01:14:22,216 INFO L117 PetriNetUnfolderBase]: For 175499/175499 co-relation queries the response was YES. [2025-04-14 01:14:22,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72864 conditions, 6856 events. 4548/6856 cut-off events. For 175499/175499 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 39722 event pairs, 448 based on Foata normal form. 2/5853 useless extension candidates. Maximal degree in co-relation 72693. Up to 6092 conditions per place. [2025-04-14 01:14:22,294 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 768 selfloop transitions, 174 changer transitions 1/943 dead transitions. [2025-04-14 01:14:22,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 943 transitions, 22778 flow [2025-04-14 01:14:22,295 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:14:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:14:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2025-04-14 01:14:22,295 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3660130718954248 [2025-04-14 01:14:22,295 INFO L175 Difference]: Start difference. First operand has 302 places, 899 transitions, 20377 flow. Second operand 9 states and 112 transitions. [2025-04-14 01:14:22,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 943 transitions, 22778 flow [2025-04-14 01:14:23,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 943 transitions, 22256 flow, removed 177 selfloop flow, removed 7 redundant places. [2025-04-14 01:14:23,659 INFO L231 Difference]: Finished difference. Result has 305 places, 908 transitions, 20459 flow [2025-04-14 01:14:23,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=19884, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20459, PETRI_PLACES=305, PETRI_TRANSITIONS=908} [2025-04-14 01:14:23,660 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2025-04-14 01:14:23,660 INFO L485 AbstractCegarLoop]: Abstraction has has 305 places, 908 transitions, 20459 flow [2025-04-14 01:14:23,660 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:23,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:23,660 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] [2025-04-14 01:14:23,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-14 01:14:23,861 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-04-14 01:14:23,861 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:23,862 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1801216205, now seen corresponding path program 24 times [2025-04-14 01:14:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:23,862 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357594999] [2025-04-14 01:14:23,862 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:14:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:23,868 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:23,873 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:23,873 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:14:23,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:24,063 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357594999] [2025-04-14 01:14:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357594999] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:24,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:24,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:14:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471531227] [2025-04-14 01:14:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:24,064 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:14:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:24,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:14:24,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:14:24,064 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:24,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 908 transitions, 20459 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:24,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:24,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:24,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:25,825 INFO L116 PetriNetUnfolderBase]: 4591/6928 cut-off events. [2025-04-14 01:14:25,825 INFO L117 PetriNetUnfolderBase]: For 173347/173347 co-relation queries the response was YES. [2025-04-14 01:14:25,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72902 conditions, 6928 events. 4591/6928 cut-off events. For 173347/173347 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 40284 event pairs, 437 based on Foata normal form. 1/5906 useless extension candidates. Maximal degree in co-relation 72726. Up to 6642 conditions per place. [2025-04-14 01:14:25,894 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 854 selfloop transitions, 110 changer transitions 1/965 dead transitions. [2025-04-14 01:14:25,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 965 transitions, 23094 flow [2025-04-14 01:14:25,894 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-14 01:14:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-14 01:14:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 143 transitions. [2025-04-14 01:14:25,895 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2803921568627451 [2025-04-14 01:14:25,895 INFO L175 Difference]: Start difference. First operand has 305 places, 908 transitions, 20459 flow. Second operand 15 states and 143 transitions. [2025-04-14 01:14:25,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 965 transitions, 23094 flow [2025-04-14 01:14:27,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 965 transitions, 22895 flow, removed 13 selfloop flow, removed 5 redundant places. [2025-04-14 01:14:27,175 INFO L231 Difference]: Finished difference. Result has 319 places, 936 transitions, 21185 flow [2025-04-14 01:14:27,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=20264, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=21185, PETRI_PLACES=319, PETRI_TRANSITIONS=936} [2025-04-14 01:14:27,176 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2025-04-14 01:14:27,176 INFO L485 AbstractCegarLoop]: Abstraction has has 319 places, 936 transitions, 21185 flow [2025-04-14 01:14:27,176 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:27,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:27,176 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] [2025-04-14 01:14:27,176 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-04-14 01:14:27,176 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:27,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash -718208869, now seen corresponding path program 25 times [2025-04-14 01:14:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:27,177 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402725560] [2025-04-14 01:14:27,177 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:27,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:14:27,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:27,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:27,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:27,501 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402725560] [2025-04-14 01:14:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402725560] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:27,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381860385] [2025-04-14 01:14:27,502 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:27,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:27,504 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:27,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-14 01:14:27,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:14:27,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:27,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:27,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:27,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:27,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:27,581 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:27,595 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:27,618 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:27,618 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:27,637 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:27,779 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:14:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:27,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381860385] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:27,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:27,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 26 [2025-04-14 01:14:27,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126184555] [2025-04-14 01:14:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:27,922 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:27,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:27,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2025-04-14 01:14:27,922 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:27,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 936 transitions, 21185 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:27,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:29,683 INFO L116 PetriNetUnfolderBase]: 4655/7048 cut-off events. [2025-04-14 01:14:29,683 INFO L117 PetriNetUnfolderBase]: For 180517/180517 co-relation queries the response was YES. [2025-04-14 01:14:29,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75486 conditions, 7048 events. 4655/7048 cut-off events. For 180517/180517 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 41359 event pairs, 450 based on Foata normal form. 1/6006 useless extension candidates. Maximal degree in co-relation 75303. Up to 6244 conditions per place. [2025-04-14 01:14:29,764 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 796 selfloop transitions, 184 changer transitions 1/981 dead transitions. [2025-04-14 01:14:29,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 981 transitions, 23984 flow [2025-04-14 01:14:29,765 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:14:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:14:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2025-04-14 01:14:29,765 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.369281045751634 [2025-04-14 01:14:29,765 INFO L175 Difference]: Start difference. First operand has 319 places, 936 transitions, 21185 flow. Second operand 9 states and 113 transitions. [2025-04-14 01:14:29,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 981 transitions, 23984 flow [2025-04-14 01:14:31,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 981 transitions, 22939 flow, removed 408 selfloop flow, removed 10 redundant places. [2025-04-14 01:14:31,278 INFO L231 Difference]: Finished difference. Result has 319 places, 948 transitions, 21152 flow [2025-04-14 01:14:31,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=20462, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21152, PETRI_PLACES=319, PETRI_TRANSITIONS=948} [2025-04-14 01:14:31,278 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2025-04-14 01:14:31,279 INFO L485 AbstractCegarLoop]: Abstraction has has 319 places, 948 transitions, 21152 flow [2025-04-14 01:14:31,279 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:31,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:31,279 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] [2025-04-14 01:14:31,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-14 01:14:31,479 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-14 01:14:31,479 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:31,480 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash -154095521, now seen corresponding path program 26 times [2025-04-14 01:14:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:31,480 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753984908] [2025-04-14 01:14:31,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:14:31,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:31,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:31,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:31,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:14:31,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:31,691 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753984908] [2025-04-14 01:14:31,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753984908] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:31,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:31,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-14 01:14:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144563703] [2025-04-14 01:14:31,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:31,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:14:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:31,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:14:31,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:14:31,692 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:31,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 948 transitions, 21152 flow. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:14:31,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:31,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:31,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:33,519 INFO L116 PetriNetUnfolderBase]: 4669/7079 cut-off events. [2025-04-14 01:14:33,519 INFO L117 PetriNetUnfolderBase]: For 182947/182947 co-relation queries the response was YES. [2025-04-14 01:14:33,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75122 conditions, 7079 events. 4669/7079 cut-off events. For 182947/182947 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 41680 event pairs, 455 based on Foata normal form. 1/6033 useless extension candidates. Maximal degree in co-relation 74938. Up to 6711 conditions per place. [2025-04-14 01:14:33,598 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 870 selfloop transitions, 120 changer transitions 1/991 dead transitions. [2025-04-14 01:14:33,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 991 transitions, 23516 flow [2025-04-14 01:14:33,599 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:14:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:14:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2025-04-14 01:14:33,600 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2918552036199095 [2025-04-14 01:14:33,600 INFO L175 Difference]: Start difference. First operand has 319 places, 948 transitions, 21152 flow. Second operand 13 states and 129 transitions. [2025-04-14 01:14:33,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 991 transitions, 23516 flow [2025-04-14 01:14:34,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 991 transitions, 23177 flow, removed 84 selfloop flow, removed 4 redundant places. [2025-04-14 01:14:34,846 INFO L231 Difference]: Finished difference. Result has 331 places, 962 transitions, 21437 flow [2025-04-14 01:14:34,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=20835, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21437, PETRI_PLACES=331, PETRI_TRANSITIONS=962} [2025-04-14 01:14:34,847 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2025-04-14 01:14:34,848 INFO L485 AbstractCegarLoop]: Abstraction has has 331 places, 962 transitions, 21437 flow [2025-04-14 01:14:34,848 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:14:34,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:34,848 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] [2025-04-14 01:14:34,848 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-04-14 01:14:34,848 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:34,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:34,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1364216175, now seen corresponding path program 27 times [2025-04-14 01:14:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:34,849 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524954292] [2025-04-14 01:14:34,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:14:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:34,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:34,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:34,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:14:34,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:35,049 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524954292] [2025-04-14 01:14:35,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524954292] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:35,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:35,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:14:35,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474730000] [2025-04-14 01:14:35,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:35,049 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:14:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:35,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:14:35,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:14:35,050 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:35,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 962 transitions, 21437 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:35,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:35,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:35,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:36,965 INFO L116 PetriNetUnfolderBase]: 4712/7151 cut-off events. [2025-04-14 01:14:36,965 INFO L117 PetriNetUnfolderBase]: For 183096/183096 co-relation queries the response was YES. [2025-04-14 01:14:37,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76365 conditions, 7151 events. 4712/7151 cut-off events. For 183096/183096 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 42133 event pairs, 468 based on Foata normal form. 1/6087 useless extension candidates. Maximal degree in co-relation 76175. Up to 6912 conditions per place. [2025-04-14 01:14:37,062 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 896 selfloop transitions, 112 changer transitions 1/1009 dead transitions. [2025-04-14 01:14:37,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1009 transitions, 24099 flow [2025-04-14 01:14:37,062 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-14 01:14:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-14 01:14:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 141 transitions. [2025-04-14 01:14:37,063 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.27647058823529413 [2025-04-14 01:14:37,063 INFO L175 Difference]: Start difference. First operand has 331 places, 962 transitions, 21437 flow. Second operand 15 states and 141 transitions. [2025-04-14 01:14:37,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1009 transitions, 24099 flow [2025-04-14 01:14:38,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1009 transitions, 23789 flow, removed 109 selfloop flow, removed 7 redundant places. [2025-04-14 01:14:38,462 INFO L231 Difference]: Finished difference. Result has 341 places, 984 transitions, 21972 flow [2025-04-14 01:14:38,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=21129, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=863, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=21972, PETRI_PLACES=341, PETRI_TRANSITIONS=984} [2025-04-14 01:14:38,463 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 309 predicate places. [2025-04-14 01:14:38,463 INFO L485 AbstractCegarLoop]: Abstraction has has 341 places, 984 transitions, 21972 flow [2025-04-14 01:14:38,463 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:14:38,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:38,463 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] [2025-04-14 01:14:38,463 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-04-14 01:14:38,463 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:38,464 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 445422055, now seen corresponding path program 28 times [2025-04-14 01:14:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:38,464 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908980062] [2025-04-14 01:14:38,464 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:14:38,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:38,471 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:38,480 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:38,480 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:14:38,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:38,833 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908980062] [2025-04-14 01:14:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908980062] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:38,833 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233699728] [2025-04-14 01:14:38,833 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:14:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:38,835 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:38,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-14 01:14:38,884 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:38,902 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:38,902 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:14:38,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:38,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:38,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:38,913 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:38,928 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:38,946 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:38,946 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:38,964 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:39,084 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:14:39,084 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 27 [2025-04-14 01:14:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:39,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233699728] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:39,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:39,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 24 [2025-04-14 01:14:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768953971] [2025-04-14 01:14:39,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:39,221 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:39,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:39,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:14:39,221 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:39,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 984 transitions, 21972 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:39,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:39,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:39,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:41,279 INFO L116 PetriNetUnfolderBase]: 5029/7624 cut-off events. [2025-04-14 01:14:41,279 INFO L117 PetriNetUnfolderBase]: For 218850/218850 co-relation queries the response was YES. [2025-04-14 01:14:41,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83619 conditions, 7624 events. 5029/7624 cut-off events. For 218850/218850 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 45312 event pairs, 354 based on Foata normal form. 1/6478 useless extension candidates. Maximal degree in co-relation 83425. Up to 4826 conditions per place. [2025-04-14 01:14:41,380 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 490 selfloop transitions, 614 changer transitions 1/1105 dead transitions. [2025-04-14 01:14:41,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1105 transitions, 26781 flow [2025-04-14 01:14:41,381 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:14:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:14:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2025-04-14 01:14:41,381 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3697478991596639 [2025-04-14 01:14:41,381 INFO L175 Difference]: Start difference. First operand has 341 places, 984 transitions, 21972 flow. Second operand 14 states and 176 transitions. [2025-04-14 01:14:41,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1105 transitions, 26781 flow [2025-04-14 01:14:43,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1105 transitions, 25756 flow, removed 442 selfloop flow, removed 5 redundant places. [2025-04-14 01:14:43,140 INFO L231 Difference]: Finished difference. Result has 356 places, 1041 transitions, 24944 flow [2025-04-14 01:14:43,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=21341, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=563, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24944, PETRI_PLACES=356, PETRI_TRANSITIONS=1041} [2025-04-14 01:14:43,141 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 324 predicate places. [2025-04-14 01:14:43,141 INFO L485 AbstractCegarLoop]: Abstraction has has 356 places, 1041 transitions, 24944 flow [2025-04-14 01:14:43,141 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:43,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:43,141 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] [2025-04-14 01:14:43,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-14 01:14:43,342 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:43,342 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:43,342 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash 188200747, now seen corresponding path program 29 times [2025-04-14 01:14:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:43,343 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520810947] [2025-04-14 01:14:43,343 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:43,349 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:43,356 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:43,356 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:43,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:43,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:43,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520810947] [2025-04-14 01:14:43,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520810947] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:43,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180134954] [2025-04-14 01:14:43,681 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:43,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:43,683 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:43,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-14 01:14:43,733 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:43,749 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:43,750 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:43,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:43,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:43,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:43,755 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:43,773 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:43,790 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:43,790 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:43,808 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:43,934 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:14:43,934 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 27 [2025-04-14 01:14:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:43,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180134954] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 24 [2025-04-14 01:14:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923546082] [2025-04-14 01:14:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:44,063 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:44,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:44,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:14:44,063 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:44,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1041 transitions, 24944 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:44,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:44,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:44,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:46,511 INFO L116 PetriNetUnfolderBase]: 5468/8274 cut-off events. [2025-04-14 01:14:46,511 INFO L117 PetriNetUnfolderBase]: For 267504/267504 co-relation queries the response was YES. [2025-04-14 01:14:46,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97560 conditions, 8274 events. 5468/8274 cut-off events. For 267504/267504 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 49680 event pairs, 437 based on Foata normal form. 1/7041 useless extension candidates. Maximal degree in co-relation 97359. Up to 6146 conditions per place. [2025-04-14 01:14:46,649 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 684 selfloop transitions, 537 changer transitions 1/1222 dead transitions. [2025-04-14 01:14:46,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1222 transitions, 30838 flow [2025-04-14 01:14:46,649 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-14 01:14:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-04-14 01:14:46,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 196 transitions. [2025-04-14 01:14:46,650 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3602941176470588 [2025-04-14 01:14:46,650 INFO L175 Difference]: Start difference. First operand has 356 places, 1041 transitions, 24944 flow. Second operand 16 states and 196 transitions. [2025-04-14 01:14:46,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1222 transitions, 30838 flow [2025-04-14 01:14:49,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 1222 transitions, 30117 flow, removed 327 selfloop flow, removed 3 redundant places. [2025-04-14 01:14:49,234 INFO L231 Difference]: Finished difference. Result has 376 places, 1149 transitions, 28638 flow [2025-04-14 01:14:49,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=24347, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=28638, PETRI_PLACES=376, PETRI_TRANSITIONS=1149} [2025-04-14 01:14:49,236 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 344 predicate places. [2025-04-14 01:14:49,236 INFO L485 AbstractCegarLoop]: Abstraction has has 376 places, 1149 transitions, 28638 flow [2025-04-14 01:14:49,236 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:49,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:49,236 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] [2025-04-14 01:14:49,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-04-14 01:14:49,436 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-04-14 01:14:49,437 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:49,437 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1469974307, now seen corresponding path program 30 times [2025-04-14 01:14:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:49,438 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092468918] [2025-04-14 01:14:49,438 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:14:49,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:49,443 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:14:49,448 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:14:49,448 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:14:49,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:49,624 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092468918] [2025-04-14 01:14:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092468918] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:49,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:49,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-14 01:14:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158820743] [2025-04-14 01:14:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:49,624 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:14:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:49,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:14:49,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:14:49,625 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:49,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1149 transitions, 28638 flow. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:14:49,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:49,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:49,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:51,959 INFO L116 PetriNetUnfolderBase]: 5508/8360 cut-off events. [2025-04-14 01:14:51,959 INFO L117 PetriNetUnfolderBase]: For 268132/268132 co-relation queries the response was YES. [2025-04-14 01:14:52,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100497 conditions, 8360 events. 5508/8360 cut-off events. For 268132/268132 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 50660 event pairs, 595 based on Foata normal form. 2/7120 useless extension candidates. Maximal degree in co-relation 100285. Up to 7973 conditions per place. [2025-04-14 01:14:52,072 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 1046 selfloop transitions, 145 changer transitions 1/1192 dead transitions. [2025-04-14 01:14:52,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1192 transitions, 31507 flow [2025-04-14 01:14:52,073 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-14 01:14:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-04-14 01:14:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 153 transitions. [2025-04-14 01:14:52,073 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2647058823529412 [2025-04-14 01:14:52,074 INFO L175 Difference]: Start difference. First operand has 376 places, 1149 transitions, 28638 flow. Second operand 17 states and 153 transitions. [2025-04-14 01:14:52,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1192 transitions, 31507 flow [2025-04-14 01:14:54,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1192 transitions, 31074 flow, removed 190 selfloop flow, removed 2 redundant places. [2025-04-14 01:14:54,534 INFO L231 Difference]: Finished difference. Result has 394 places, 1165 transitions, 28997 flow [2025-04-14 01:14:54,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=28275, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=28997, PETRI_PLACES=394, PETRI_TRANSITIONS=1165} [2025-04-14 01:14:54,535 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2025-04-14 01:14:54,535 INFO L485 AbstractCegarLoop]: Abstraction has has 394 places, 1165 transitions, 28997 flow [2025-04-14 01:14:54,535 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:14:54,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:54,535 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] [2025-04-14 01:14:54,535 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-04-14 01:14:54,535 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:14:54,536 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1131624191, now seen corresponding path program 31 times [2025-04-14 01:14:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:54,536 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102663726] [2025-04-14 01:14:54,536 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:54,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:54,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:14:54,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:54,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:54,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:54,842 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102663726] [2025-04-14 01:14:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102663726] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:54,842 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092953470] [2025-04-14 01:14:54,842 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:54,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:54,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:54,844 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:14:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-14 01:14:54,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:14:54,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:14:54,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:54,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:54,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:14:54,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:54,918 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:14:54,932 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:54,947 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:14:54,947 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:14:54,965 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:14:55,098 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:14:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:55,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:14:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092953470] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:14:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 26 [2025-04-14 01:14:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213370197] [2025-04-14 01:14:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:55,238 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:14:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:55,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:14:55,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2025-04-14 01:14:55,239 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:14:55,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1165 transitions, 28997 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:14:55,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:55,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:14:55,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:57,951 INFO L116 PetriNetUnfolderBase]: 5508/8359 cut-off events. [2025-04-14 01:14:57,952 INFO L117 PetriNetUnfolderBase]: For 263821/263821 co-relation queries the response was YES. [2025-04-14 01:14:58,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99857 conditions, 8359 events. 5508/8359 cut-off events. For 263821/263821 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 50583 event pairs, 514 based on Foata normal form. 1/7118 useless extension candidates. Maximal degree in co-relation 99638. Up to 6992 conditions per place. [2025-04-14 01:14:58,049 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 807 selfloop transitions, 412 changer transitions 1/1220 dead transitions. [2025-04-14 01:14:58,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1220 transitions, 32113 flow [2025-04-14 01:14:58,050 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-14 01:14:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-04-14 01:14:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 187 transitions. [2025-04-14 01:14:58,050 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.34375 [2025-04-14 01:14:58,050 INFO L175 Difference]: Start difference. First operand has 394 places, 1165 transitions, 28997 flow. Second operand 16 states and 187 transitions. [2025-04-14 01:14:58,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1220 transitions, 32113 flow [2025-04-14 01:15:00,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 1220 transitions, 31651 flow, removed 114 selfloop flow, removed 10 redundant places. [2025-04-14 01:15:00,250 INFO L231 Difference]: Finished difference. Result has 404 places, 1177 transitions, 29988 flow [2025-04-14 01:15:00,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=28524, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=29988, PETRI_PLACES=404, PETRI_TRANSITIONS=1177} [2025-04-14 01:15:00,251 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2025-04-14 01:15:00,251 INFO L485 AbstractCegarLoop]: Abstraction has has 404 places, 1177 transitions, 29988 flow [2025-04-14 01:15:00,251 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:15:00,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:00,251 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] [2025-04-14 01:15:00,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-14 01:15:00,451 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:00,452 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:00,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash -998371517, now seen corresponding path program 32 times [2025-04-14 01:15:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:00,452 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896666599] [2025-04-14 01:15:00,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:00,457 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:00,461 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:15:00,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:15:00,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:00,665 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896666599] [2025-04-14 01:15:00,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896666599] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:00,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:00,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:15:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44451075] [2025-04-14 01:15:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:00,666 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:15:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:00,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:15:00,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:15:00,666 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:00,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 1177 transitions, 29988 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:15:00,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:00,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:00,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:03,193 INFO L116 PetriNetUnfolderBase]: 5526/8396 cut-off events. [2025-04-14 01:15:03,193 INFO L117 PetriNetUnfolderBase]: For 277088/277088 co-relation queries the response was YES. [2025-04-14 01:15:03,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102364 conditions, 8396 events. 5526/8396 cut-off events. For 277088/277088 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 51017 event pairs, 589 based on Foata normal form. 1/7149 useless extension candidates. Maximal degree in co-relation 102138. Up to 8160 conditions per place. [2025-04-14 01:15:03,296 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 1105 selfloop transitions, 115 changer transitions 1/1221 dead transitions. [2025-04-14 01:15:03,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 1221 transitions, 32987 flow [2025-04-14 01:15:03,296 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:15:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:15:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2025-04-14 01:15:03,297 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2895927601809955 [2025-04-14 01:15:03,297 INFO L175 Difference]: Start difference. First operand has 404 places, 1177 transitions, 29988 flow. Second operand 13 states and 128 transitions. [2025-04-14 01:15:03,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 1221 transitions, 32987 flow [2025-04-14 01:15:05,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1221 transitions, 32835 flow, removed 37 selfloop flow, removed 4 redundant places. [2025-04-14 01:15:05,391 INFO L231 Difference]: Finished difference. Result has 416 places, 1198 transitions, 30625 flow [2025-04-14 01:15:05,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=29837, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1069, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=30625, PETRI_PLACES=416, PETRI_TRANSITIONS=1198} [2025-04-14 01:15:05,392 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2025-04-14 01:15:05,392 INFO L485 AbstractCegarLoop]: Abstraction has has 416 places, 1198 transitions, 30625 flow [2025-04-14 01:15:05,392 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:15:05,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:05,392 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] [2025-04-14 01:15:05,392 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-04-14 01:15:05,392 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:05,393 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1749281833, now seen corresponding path program 33 times [2025-04-14 01:15:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:05,393 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129354242] [2025-04-14 01:15:05,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:15:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:05,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:05,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:15:05,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:15:05,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:05,634 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129354242] [2025-04-14 01:15:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129354242] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:05,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-04-14 01:15:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292665084] [2025-04-14 01:15:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:05,634 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:15:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:05,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:15:05,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:15:05,635 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:05,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 1198 transitions, 30625 flow. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:15:05,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:05,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:05,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:08,318 INFO L116 PetriNetUnfolderBase]: 5605/8528 cut-off events. [2025-04-14 01:15:08,319 INFO L117 PetriNetUnfolderBase]: For 283563/283563 co-relation queries the response was YES. [2025-04-14 01:15:08,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105108 conditions, 8528 events. 5605/8528 cut-off events. For 283563/283563 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 52048 event pairs, 471 based on Foata normal form. 1/7259 useless extension candidates. Maximal degree in co-relation 104876. Up to 8203 conditions per place. [2025-04-14 01:15:08,435 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 1087 selfloop transitions, 185 changer transitions 1/1273 dead transitions. [2025-04-14 01:15:08,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1273 transitions, 34571 flow [2025-04-14 01:15:08,436 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-14 01:15:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-04-14 01:15:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 154 transitions. [2025-04-14 01:15:08,437 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.28308823529411764 [2025-04-14 01:15:08,437 INFO L175 Difference]: Start difference. First operand has 416 places, 1198 transitions, 30625 flow. Second operand 16 states and 154 transitions. [2025-04-14 01:15:08,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1273 transitions, 34571 flow [2025-04-14 01:15:10,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1273 transitions, 34103 flow, removed 185 selfloop flow, removed 6 redundant places. [2025-04-14 01:15:10,906 INFO L231 Difference]: Finished difference. Result has 429 places, 1241 transitions, 31823 flow [2025-04-14 01:15:10,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=30157, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=31823, PETRI_PLACES=429, PETRI_TRANSITIONS=1241} [2025-04-14 01:15:10,907 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 397 predicate places. [2025-04-14 01:15:10,907 INFO L485 AbstractCegarLoop]: Abstraction has has 429 places, 1241 transitions, 31823 flow [2025-04-14 01:15:10,907 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 01:15:10,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:10,907 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] [2025-04-14 01:15:10,907 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-04-14 01:15:10,907 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:10,908 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1535565143, now seen corresponding path program 34 times [2025-04-14 01:15:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:10,908 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227103882] [2025-04-14 01:15:10,908 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:15:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:10,914 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:10,921 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:15:10,921 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:15:10,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:11,207 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227103882] [2025-04-14 01:15:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227103882] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:11,207 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123095584] [2025-04-14 01:15:11,207 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:15:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:15:11,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:15:11,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-14 01:15:11,265 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:11,282 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:15:11,282 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:15:11,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:11,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-14 01:15:11,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:15:11,287 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:15:11,303 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:15:11,320 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:15:11,320 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:15:11,336 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:15:11,501 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-04-14 01:15:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:15:11,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:15:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123095584] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:11,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:15:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10] total 25 [2025-04-14 01:15:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523644046] [2025-04-14 01:15:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:11,667 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:15:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:11,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:15:11,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2025-04-14 01:15:11,668 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:11,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 1241 transitions, 31823 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:15:11,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:11,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:11,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:14,650 INFO L116 PetriNetUnfolderBase]: 5683/8657 cut-off events. [2025-04-14 01:15:14,651 INFO L117 PetriNetUnfolderBase]: For 297645/297645 co-relation queries the response was YES. [2025-04-14 01:15:14,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107393 conditions, 8657 events. 5683/8657 cut-off events. For 297645/297645 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 52983 event pairs, 396 based on Foata normal form. 1/7374 useless extension candidates. Maximal degree in co-relation 107156. Up to 6554 conditions per place. [2025-04-14 01:15:14,781 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 737 selfloop transitions, 563 changer transitions 1/1301 dead transitions. [2025-04-14 01:15:14,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1301 transitions, 35334 flow [2025-04-14 01:15:14,781 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:15:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:15:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 168 transitions. [2025-04-14 01:15:14,782 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2025-04-14 01:15:14,782 INFO L175 Difference]: Start difference. First operand has 429 places, 1241 transitions, 31823 flow. Second operand 14 states and 168 transitions. [2025-04-14 01:15:14,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1301 transitions, 35334 flow [2025-04-14 01:15:17,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1301 transitions, 34493 flow, removed 360 selfloop flow, removed 5 redundant places. [2025-04-14 01:15:17,401 INFO L231 Difference]: Finished difference. Result has 441 places, 1261 transitions, 32962 flow [2025-04-14 01:15:17,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=31070, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=32962, PETRI_PLACES=441, PETRI_TRANSITIONS=1261} [2025-04-14 01:15:17,402 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 409 predicate places. [2025-04-14 01:15:17,402 INFO L485 AbstractCegarLoop]: Abstraction has has 441 places, 1261 transitions, 32962 flow [2025-04-14 01:15:17,402 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 01:15:17,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:17,403 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] [2025-04-14 01:15:17,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-14 01:15:17,603 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-14 01:15:17,603 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:17,604 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -86629145, now seen corresponding path program 35 times [2025-04-14 01:15:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:17,604 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354561329] [2025-04-14 01:15:17,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:15:17,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:17,608 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:17,614 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:15:17,614 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:15:17,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:15:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:17,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354561329] [2025-04-14 01:15:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354561329] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:17,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926504984] [2025-04-14 01:15:17,885 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:15:17,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:17,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:15:17,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:15:17,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-14 01:15:17,940 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:17,957 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:15:17,957 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:15:17,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:17,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-14 01:15:17,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:15:17,991 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:15:18,137 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:15:18,138 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2025-04-14 01:15:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:18,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:15:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926504984] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:18,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:15:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 9] total 22 [2025-04-14 01:15:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5708187] [2025-04-14 01:15:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:18,236 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:15:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:18,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:15:18,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2025-04-14 01:15:18,236 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:18,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 1261 transitions, 32962 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:18,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:18,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:21,065 INFO L116 PetriNetUnfolderBase]: 6007/9124 cut-off events. [2025-04-14 01:15:21,065 INFO L117 PetriNetUnfolderBase]: For 317172/317172 co-relation queries the response was YES. [2025-04-14 01:15:21,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116046 conditions, 9124 events. 6007/9124 cut-off events. For 317172/317172 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 56160 event pairs, 452 based on Foata normal form. 1/7769 useless extension candidates. Maximal degree in co-relation 115802. Up to 7496 conditions per place. [2025-04-14 01:15:21,206 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 968 selfloop transitions, 399 changer transitions 1/1368 dead transitions. [2025-04-14 01:15:21,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1368 transitions, 38242 flow [2025-04-14 01:15:21,207 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:15:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:15:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2025-04-14 01:15:21,207 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3553921568627451 [2025-04-14 01:15:21,207 INFO L175 Difference]: Start difference. First operand has 441 places, 1261 transitions, 32962 flow. Second operand 12 states and 145 transitions. [2025-04-14 01:15:21,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1368 transitions, 38242 flow [2025-04-14 01:15:24,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1368 transitions, 37592 flow, removed 49 selfloop flow, removed 8 redundant places. [2025-04-14 01:15:24,158 INFO L231 Difference]: Finished difference. Result has 449 places, 1332 transitions, 35647 flow [2025-04-14 01:15:24,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=32341, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=35647, PETRI_PLACES=449, PETRI_TRANSITIONS=1332} [2025-04-14 01:15:24,159 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 417 predicate places. [2025-04-14 01:15:24,159 INFO L485 AbstractCegarLoop]: Abstraction has has 449 places, 1332 transitions, 35647 flow [2025-04-14 01:15:24,160 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:24,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:24,160 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] [2025-04-14 01:15:24,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-14 01:15:24,360 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-14 01:15:24,360 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:24,361 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1033372335, now seen corresponding path program 36 times [2025-04-14 01:15:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:24,361 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135602959] [2025-04-14 01:15:24,361 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:15:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:24,365 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-04-14 01:15:24,370 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-04-14 01:15:24,370 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:15:24,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:24,679 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135602959] [2025-04-14 01:15:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135602959] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:24,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:24,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:15:24,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648514] [2025-04-14 01:15:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:24,679 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:15:24,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:24,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:15:24,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:15:24,680 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:24,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 1332 transitions, 35647 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:15:24,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:24,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:24,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:27,401 INFO L116 PetriNetUnfolderBase]: 6007/9123 cut-off events. [2025-04-14 01:15:27,402 INFO L117 PetriNetUnfolderBase]: For 335001/335001 co-relation queries the response was YES. [2025-04-14 01:15:27,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119054 conditions, 9123 events. 6007/9123 cut-off events. For 335001/335001 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 56187 event pairs, 545 based on Foata normal form. 1/7768 useless extension candidates. Maximal degree in co-relation 118802. Up to 8897 conditions per place. [2025-04-14 01:15:27,530 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 1258 selfloop transitions, 93 changer transitions 1/1352 dead transitions. [2025-04-14 01:15:27,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1352 transitions, 38496 flow [2025-04-14 01:15:27,531 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:15:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:15:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2025-04-14 01:15:27,531 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3088235294117647 [2025-04-14 01:15:27,531 INFO L175 Difference]: Start difference. First operand has 449 places, 1332 transitions, 35647 flow. Second operand 10 states and 105 transitions. [2025-04-14 01:15:27,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1352 transitions, 38496 flow [2025-04-14 01:15:30,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1352 transitions, 38293 flow, removed 49 selfloop flow, removed 5 redundant places. [2025-04-14 01:15:30,637 INFO L231 Difference]: Finished difference. Result has 454 places, 1333 transitions, 35683 flow [2025-04-14 01:15:30,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=35437, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35683, PETRI_PLACES=454, PETRI_TRANSITIONS=1333} [2025-04-14 01:15:30,639 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2025-04-14 01:15:30,639 INFO L485 AbstractCegarLoop]: Abstraction has has 454 places, 1333 transitions, 35683 flow [2025-04-14 01:15:30,639 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 01:15:30,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:30,639 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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 01:15:30,639 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-04-14 01:15:30,639 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:30,640 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1622945602, now seen corresponding path program 1 times [2025-04-14 01:15:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:30,640 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503941823] [2025-04-14 01:15:30,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:15:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:30,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-14 01:15:30,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-14 01:15:30,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:15:30,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:30,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:30,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503941823] [2025-04-14 01:15:30,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503941823] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:30,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496858461] [2025-04-14 01:15:30,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:15:30,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:30,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:15:30,698 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:15:30,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-14 01:15:30,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-14 01:15:30,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-14 01:15:30,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:15:30,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:30,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-14 01:15:30,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:15:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:30,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:15:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496858461] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:15:30,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:15:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-04-14 01:15:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14315477] [2025-04-14 01:15:30,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:15:30,865 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-14 01:15:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:30,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-14 01:15:30,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-04-14 01:15:30,866 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:30,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 1333 transitions, 35683 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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 01:15:30,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:30,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:30,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:34,625 INFO L116 PetriNetUnfolderBase]: 7237/11521 cut-off events. [2025-04-14 01:15:34,625 INFO L117 PetriNetUnfolderBase]: For 490541/490541 co-relation queries the response was YES. [2025-04-14 01:15:34,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140840 conditions, 11521 events. 7237/11521 cut-off events. For 490541/490541 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 79142 event pairs, 2033 based on Foata normal form. 199/10129 useless extension candidates. Maximal degree in co-relation 139817. Up to 9122 conditions per place. [2025-04-14 01:15:34,793 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 1651 selfloop transitions, 53 changer transitions 46/1750 dead transitions. [2025-04-14 01:15:34,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1750 transitions, 46896 flow [2025-04-14 01:15:34,794 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:15:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:15:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-04-14 01:15:34,794 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.33088235294117646 [2025-04-14 01:15:34,794 INFO L175 Difference]: Start difference. First operand has 454 places, 1333 transitions, 35683 flow. Second operand 8 states and 90 transitions. [2025-04-14 01:15:34,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1750 transitions, 46896 flow [2025-04-14 01:15:39,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1750 transitions, 46557 flow, removed 34 selfloop flow, removed 7 redundant places. [2025-04-14 01:15:39,074 INFO L231 Difference]: Finished difference. Result has 457 places, 1382 transitions, 36564 flow [2025-04-14 01:15:39,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=35459, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36564, PETRI_PLACES=457, PETRI_TRANSITIONS=1382} [2025-04-14 01:15:39,075 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 425 predicate places. [2025-04-14 01:15:39,075 INFO L485 AbstractCegarLoop]: Abstraction has has 457 places, 1382 transitions, 36564 flow [2025-04-14 01:15:39,075 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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 01:15:39,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:39,076 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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 01:15:39,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-04-14 01:15:39,276 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-14 01:15:39,276 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:39,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2049768784, now seen corresponding path program 1 times [2025-04-14 01:15:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:39,277 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276086547] [2025-04-14 01:15:39,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:15:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:39,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-14 01:15:39,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-14 01:15:39,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:15:39,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:39,339 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276086547] [2025-04-14 01:15:39,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276086547] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:39,339 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907337686] [2025-04-14 01:15:39,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:15:39,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:15:39,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:15:39,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-14 01:15:39,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-14 01:15:39,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-14 01:15:39,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:15:39,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:39,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:15:39,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:15:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:39,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:15:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907337686] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:15:39,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:15:39,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-14 01:15:39,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314174781] [2025-04-14 01:15:39,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:15:39,496 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:15:39,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:39,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:15:39,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:15:39,497 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:39,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1382 transitions, 36564 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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 01:15:39,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:39,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:39,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:42,824 INFO L116 PetriNetUnfolderBase]: 6614/10576 cut-off events. [2025-04-14 01:15:42,824 INFO L117 PetriNetUnfolderBase]: For 391864/391864 co-relation queries the response was YES. [2025-04-14 01:15:42,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132112 conditions, 10576 events. 6614/10576 cut-off events. For 391864/391864 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 72379 event pairs, 1923 based on Foata normal form. 0/9220 useless extension candidates. Maximal degree in co-relation 131245. Up to 9122 conditions per place. [2025-04-14 01:15:42,971 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 1329 selfloop transitions, 6 changer transitions 246/1581 dead transitions. [2025-04-14 01:15:42,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1581 transitions, 43527 flow [2025-04-14 01:15:42,971 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:15:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:15:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2025-04-14 01:15:42,972 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31985294117647056 [2025-04-14 01:15:42,972 INFO L175 Difference]: Start difference. First operand has 457 places, 1382 transitions, 36564 flow. Second operand 8 states and 87 transitions. [2025-04-14 01:15:42,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1581 transitions, 43527 flow [2025-04-14 01:15:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 1581 transitions, 43505 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-04-14 01:15:46,699 INFO L231 Difference]: Finished difference. Result has 465 places, 1335 transitions, 35921 flow [2025-04-14 01:15:46,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=36532, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=35921, PETRI_PLACES=465, PETRI_TRANSITIONS=1335} [2025-04-14 01:15:46,700 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 433 predicate places. [2025-04-14 01:15:46,700 INFO L485 AbstractCegarLoop]: Abstraction has has 465 places, 1335 transitions, 35921 flow [2025-04-14 01:15:46,700 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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 01:15:46,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:46,700 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:15:46,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-04-14 01:15:46,901 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:46,901 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:46,901 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 387150277, now seen corresponding path program 2 times [2025-04-14 01:15:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:46,902 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596412165] [2025-04-14 01:15:46,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:46,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:15:46,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:15:46,911 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:15:46,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:15:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:46,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596412165] [2025-04-14 01:15:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596412165] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:46,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:15:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864634633] [2025-04-14 01:15:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:46,948 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:46,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:46,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:46,949 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1335 transitions, 35921 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 01:15:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:46,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:50,324 INFO L116 PetriNetUnfolderBase]: 6814/10336 cut-off events. [2025-04-14 01:15:50,324 INFO L117 PetriNetUnfolderBase]: For 419350/419350 co-relation queries the response was YES. [2025-04-14 01:15:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137450 conditions, 10336 events. 6814/10336 cut-off events. For 419350/419350 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 65275 event pairs, 982 based on Foata normal form. 0/8799 useless extension candidates. Maximal degree in co-relation 137209. Up to 4432 conditions per place. [2025-04-14 01:15:50,482 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 1583 selfloop transitions, 256 changer transitions 15/1854 dead transitions. [2025-04-14 01:15:50,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1854 transitions, 53719 flow [2025-04-14 01:15:50,483 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:15:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:15:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-04-14 01:15:50,483 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2025-04-14 01:15:50,483 INFO L175 Difference]: Start difference. First operand has 465 places, 1335 transitions, 35921 flow. Second operand 6 states and 92 transitions. [2025-04-14 01:15:50,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1854 transitions, 53719 flow [2025-04-14 01:15:54,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 1854 transitions, 53239 flow, removed 234 selfloop flow, removed 5 redundant places. [2025-04-14 01:15:54,407 INFO L231 Difference]: Finished difference. Result has 460 places, 1375 transitions, 37669 flow [2025-04-14 01:15:54,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=35517, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1079, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=37669, PETRI_PLACES=460, PETRI_TRANSITIONS=1375} [2025-04-14 01:15:54,408 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 428 predicate places. [2025-04-14 01:15:54,408 INFO L485 AbstractCegarLoop]: Abstraction has has 460 places, 1375 transitions, 37669 flow [2025-04-14 01:15:54,408 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 01:15:54,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:54,408 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:15:54,408 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-04-14 01:15:54,408 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:15:54,409 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1318874251, now seen corresponding path program 2 times [2025-04-14 01:15:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:54,409 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002759450] [2025-04-14 01:15:54,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:54,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:54,416 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:15:54,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:15:54,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:15:54,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:15:54,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:54,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002759450] [2025-04-14 01:15:54,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002759450] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:54,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125377543] [2025-04-14 01:15:54,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:54,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:15:54,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:15:54,476 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:15:54,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-14 01:15:54,546 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:15:54,571 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:15:54,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:15:54,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:54,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:15:54,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:15:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-14 01:15:54,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:15:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-14 01:15:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125377543] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:15:54,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:15:54,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-04-14 01:15:54,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788458360] [2025-04-14 01:15:54,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:54,683 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:15:54,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:54,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:15:54,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:15:54,683 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:15:54,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1375 transitions, 37669 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2025-04-14 01:15:54,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:54,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:15:54,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:58,353 INFO L116 PetriNetUnfolderBase]: 6746/10176 cut-off events. [2025-04-14 01:15:58,353 INFO L117 PetriNetUnfolderBase]: For 474480/474480 co-relation queries the response was YES. [2025-04-14 01:15:58,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139735 conditions, 10176 events. 6746/10176 cut-off events. For 474480/474480 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 62745 event pairs, 1325 based on Foata normal form. 0/9315 useless extension candidates. Maximal degree in co-relation 139495. Up to 7076 conditions per place. [2025-04-14 01:15:58,500 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 1371 selfloop transitions, 54 changer transitions 1/1426 dead transitions. [2025-04-14 01:15:58,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1426 transitions, 41756 flow [2025-04-14 01:15:58,501 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:15:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:15:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2025-04-14 01:15:58,501 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31932773109243695 [2025-04-14 01:15:58,501 INFO L175 Difference]: Start difference. First operand has 460 places, 1375 transitions, 37669 flow. Second operand 7 states and 76 transitions. [2025-04-14 01:15:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1426 transitions, 41756 flow [2025-04-14 01:16:02,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1426 transitions, 41389 flow, removed 90 selfloop flow, removed 8 redundant places. [2025-04-14 01:16:02,715 INFO L231 Difference]: Finished difference. Result has 460 places, 1371 transitions, 37556 flow [2025-04-14 01:16:02,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=37310, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37556, PETRI_PLACES=460, PETRI_TRANSITIONS=1371} [2025-04-14 01:16:02,716 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 428 predicate places. [2025-04-14 01:16:02,717 INFO L485 AbstractCegarLoop]: Abstraction has has 460 places, 1371 transitions, 37556 flow [2025-04-14 01:16:02,717 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2025-04-14 01:16:02,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:02,717 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:16:02,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-14 01:16:02,917 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:02,917 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:16:02,918 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1246624671, now seen corresponding path program 3 times [2025-04-14 01:16:02,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:02,918 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458021642] [2025-04-14 01:16:02,918 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:16:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:02,924 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:16:02,928 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:16:02,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:16:02,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:02,959 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458021642] [2025-04-14 01:16:02,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458021642] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:02,959 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936429997] [2025-04-14 01:16:02,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:16:02,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:16:02,962 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:16:02,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-14 01:16:03,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:16:03,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:16:03,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:16:03,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:03,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:16:03,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:16:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-14 01:16:03,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:16:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-14 01:16:03,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936429997] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:03,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:16:03,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-04-14 01:16:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416852388] [2025-04-14 01:16:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:16:03,124 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:16:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:03,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:16:03,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:16:03,125 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:16:03,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1371 transitions, 37556 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2025-04-14 01:16:03,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:03,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:16:03,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:06,444 INFO L116 PetriNetUnfolderBase]: 6768/10215 cut-off events. [2025-04-14 01:16:06,444 INFO L117 PetriNetUnfolderBase]: For 490565/490565 co-relation queries the response was YES. [2025-04-14 01:16:06,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140369 conditions, 10215 events. 6768/10215 cut-off events. For 490565/490565 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 63110 event pairs, 847 based on Foata normal form. 69/9396 useless extension candidates. Maximal degree in co-relation 140130. Up to 7094 conditions per place. [2025-04-14 01:16:06,597 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 1422 selfloop transitions, 112 changer transitions 9/1543 dead transitions. [2025-04-14 01:16:06,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1543 transitions, 44925 flow [2025-04-14 01:16:06,597 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:16:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:16:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-04-14 01:16:06,598 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.33613445378151263 [2025-04-14 01:16:06,598 INFO L175 Difference]: Start difference. First operand has 460 places, 1371 transitions, 37556 flow. Second operand 7 states and 80 transitions. [2025-04-14 01:16:06,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1543 transitions, 44925 flow [2025-04-14 01:16:11,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1543 transitions, 44821 flow, removed 31 selfloop flow, removed 2 redundant places. [2025-04-14 01:16:11,050 INFO L231 Difference]: Finished difference. Result has 467 places, 1399 transitions, 39457 flow [2025-04-14 01:16:11,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=37488, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39457, PETRI_PLACES=467, PETRI_TRANSITIONS=1399} [2025-04-14 01:16:11,051 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 435 predicate places. [2025-04-14 01:16:11,051 INFO L485 AbstractCegarLoop]: Abstraction has has 467 places, 1399 transitions, 39457 flow [2025-04-14 01:16:11,051 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2025-04-14 01:16:11,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:11,051 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:16:11,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-14 01:16:11,252 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-04-14 01:16:11,252 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:16:11,253 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1966959497, now seen corresponding path program 4 times [2025-04-14 01:16:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:11,253 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010174529] [2025-04-14 01:16:11,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:16:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:11,259 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:16:11,260 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 17 of 26 statements. [2025-04-14 01:16:11,260 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:16:11,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:11,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:11,281 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010174529] [2025-04-14 01:16:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010174529] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:11,281 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463399139] [2025-04-14 01:16:11,281 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:16:11,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:11,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:16:11,283 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:16:11,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-14 01:16:11,351 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:16:11,360 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 17 of 26 statements. [2025-04-14 01:16:11,361 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:16:11,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:11,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-14 01:16:11,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:16:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:11,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:16:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:11,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463399139] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:16:11,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:16:11,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-04-14 01:16:11,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690544118] [2025-04-14 01:16:11,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:16:11,423 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:16:11,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:11,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:16:11,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-14 01:16:11,423 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:16:11,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1399 transitions, 39457 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 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 01:16:11,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:11,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:16:11,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:15,795 INFO L116 PetriNetUnfolderBase]: 8222/12288 cut-off events. [2025-04-14 01:16:15,795 INFO L117 PetriNetUnfolderBase]: For 626335/626335 co-relation queries the response was YES. [2025-04-14 01:16:15,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171096 conditions, 12288 events. 8222/12288 cut-off events. For 626335/626335 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 77327 event pairs, 665 based on Foata normal form. 12/11350 useless extension candidates. Maximal degree in co-relation 170854. Up to 3944 conditions per place. [2025-04-14 01:16:15,979 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 1926 selfloop transitions, 599 changer transitions 4/2529 dead transitions. [2025-04-14 01:16:15,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 2529 transitions, 77735 flow [2025-04-14 01:16:15,979 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:16:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:16:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2025-04-14 01:16:15,980 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47285067873303166 [2025-04-14 01:16:15,980 INFO L175 Difference]: Start difference. First operand has 467 places, 1399 transitions, 39457 flow. Second operand 13 states and 209 transitions. [2025-04-14 01:16:15,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 2529 transitions, 77735 flow [2025-04-14 01:16:21,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 2529 transitions, 77576 flow, removed 77 selfloop flow, removed 3 redundant places. [2025-04-14 01:16:21,962 INFO L231 Difference]: Finished difference. Result has 486 places, 1658 transitions, 50556 flow [2025-04-14 01:16:21,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=39432, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=361, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=50556, PETRI_PLACES=486, PETRI_TRANSITIONS=1658} [2025-04-14 01:16:21,963 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2025-04-14 01:16:21,963 INFO L485 AbstractCegarLoop]: Abstraction has has 486 places, 1658 transitions, 50556 flow [2025-04-14 01:16:21,963 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 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 01:16:21,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:21,963 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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 01:16:21,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-14 01:16:22,164 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-04-14 01:16:22,164 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:16:22,165 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1196494857, now seen corresponding path program 1 times [2025-04-14 01:16:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:22,165 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131396076] [2025-04-14 01:16:22,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:16:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:22,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-14 01:16:22,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:16:22,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:16:22,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:16:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:22,246 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131396076] [2025-04-14 01:16:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131396076] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:22,246 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372957220] [2025-04-14 01:16:22,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:16:22,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:16:22,248 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:16:22,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-14 01:16:22,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-14 01:16:22,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:16:22,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:16:22,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:22,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-14 01:16:22,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:16:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:16:22,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:16:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:16:22,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372957220] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:22,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:16:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2025-04-14 01:16:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716885259] [2025-04-14 01:16:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:16:22,408 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:16:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:22,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:16:22,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-14 01:16:22,409 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:16:22,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1658 transitions, 50556 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 01:16:22,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:22,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:16:22,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:26,188 INFO L116 PetriNetUnfolderBase]: 5823/8488 cut-off events. [2025-04-14 01:16:26,188 INFO L117 PetriNetUnfolderBase]: For 592799/592799 co-relation queries the response was YES. [2025-04-14 01:16:26,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126853 conditions, 8488 events. 5823/8488 cut-off events. For 592799/592799 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 47616 event pairs, 1069 based on Foata normal form. 630/8936 useless extension candidates. Maximal degree in co-relation 126603. Up to 5968 conditions per place. [2025-04-14 01:16:26,325 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 1398 selfloop transitions, 160 changer transitions 0/1558 dead transitions. [2025-04-14 01:16:26,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1558 transitions, 49206 flow [2025-04-14 01:16:26,325 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:16:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:16:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2025-04-14 01:16:26,326 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31862745098039214 [2025-04-14 01:16:26,326 INFO L175 Difference]: Start difference. First operand has 486 places, 1658 transitions, 50556 flow. Second operand 6 states and 65 transitions. [2025-04-14 01:16:26,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1558 transitions, 49206 flow [2025-04-14 01:16:30,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1558 transitions, 48337 flow, removed 276 selfloop flow, removed 14 redundant places. [2025-04-14 01:16:30,110 INFO L231 Difference]: Finished difference. Result has 475 places, 1466 transitions, 43192 flow [2025-04-14 01:16:30,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=42872, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=43192, PETRI_PLACES=475, PETRI_TRANSITIONS=1466} [2025-04-14 01:16:30,111 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 443 predicate places. [2025-04-14 01:16:30,112 INFO L485 AbstractCegarLoop]: Abstraction has has 475 places, 1466 transitions, 43192 flow [2025-04-14 01:16:30,112 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 01:16:30,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:30,112 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:16:30,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-14 01:16:30,312 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:30,312 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:16:30,313 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash -591562563, now seen corresponding path program 5 times [2025-04-14 01:16:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:30,313 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225183723] [2025-04-14 01:16:30,313 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:16:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:30,318 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:16:30,321 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:16:30,322 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:16:30,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:16:30,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:30,380 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225183723] [2025-04-14 01:16:30,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225183723] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:30,380 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658868862] [2025-04-14 01:16:30,380 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:16:30,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:16:30,382 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:16:30,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-14 01:16:30,451 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:16:30,473 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:16:30,473 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:16:30,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:30,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:16:30,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:16:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:16:30,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:16:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:16:30,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658868862] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:30,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:16:30,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2025-04-14 01:16:30,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894996713] [2025-04-14 01:16:30,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:16:30,581 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:16:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:30,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:16:30,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-04-14 01:16:30,581 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:16:30,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1466 transitions, 43192 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:16:30,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:30,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:16:30,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:33,465 INFO L116 PetriNetUnfolderBase]: 5939/8596 cut-off events. [2025-04-14 01:16:33,465 INFO L117 PetriNetUnfolderBase]: For 509664/509664 co-relation queries the response was YES. [2025-04-14 01:16:33,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126769 conditions, 8596 events. 5939/8596 cut-off events. For 509664/509664 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 47031 event pairs, 658 based on Foata normal form. 112/8487 useless extension candidates. Maximal degree in co-relation 126528. Up to 4900 conditions per place. [2025-04-14 01:16:33,629 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 1441 selfloop transitions, 255 changer transitions 0/1696 dead transitions. [2025-04-14 01:16:33,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1696 transitions, 52750 flow [2025-04-14 01:16:33,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:16:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:16:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2025-04-14 01:16:33,630 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3403361344537815 [2025-04-14 01:16:33,630 INFO L175 Difference]: Start difference. First operand has 475 places, 1466 transitions, 43192 flow. Second operand 7 states and 81 transitions. [2025-04-14 01:16:33,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1696 transitions, 52750 flow [2025-04-14 01:16:37,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1696 transitions, 52334 flow, removed 21 selfloop flow, removed 5 redundant places. [2025-04-14 01:16:37,749 INFO L231 Difference]: Finished difference. Result has 478 places, 1463 transitions, 43780 flow [2025-04-14 01:16:37,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=42638, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43780, PETRI_PLACES=478, PETRI_TRANSITIONS=1463} [2025-04-14 01:16:37,750 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 446 predicate places. [2025-04-14 01:16:37,750 INFO L485 AbstractCegarLoop]: Abstraction has has 478 places, 1463 transitions, 43780 flow [2025-04-14 01:16:37,750 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:16:37,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:37,750 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:16:37,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-04-14 01:16:37,951 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:37,951 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:16:37,951 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1225607410, now seen corresponding path program 1 times [2025-04-14 01:16:37,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:37,952 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853943820] [2025-04-14 01:16:37,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:16:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:37,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:16:37,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:16:37,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:16:37,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:16:38,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:38,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853943820] [2025-04-14 01:16:38,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853943820] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:38,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117573246] [2025-04-14 01:16:38,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:16:38,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:38,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:16:38,597 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:16:38,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-14 01:16:38,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:16:38,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:16:38,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:16:38,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:38,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-14 01:16:38,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:16:38,686 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:16:38,722 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-14 01:16:38,741 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:16:38,741 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:16:38,763 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-14 01:16:38,781 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-14 01:16:39,075 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:16:39,075 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 15 [2025-04-14 01:16:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:16:39,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:16:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117573246] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:16:39,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:16:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 10] total 40 [2025-04-14 01:16:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416550279] [2025-04-14 01:16:39,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:16:39,480 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-04-14 01:16:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:39,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-04-14 01:16:39,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1583, Unknown=0, NotChecked=0, Total=1722 [2025-04-14 01:16:39,481 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:16:39,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1463 transitions, 43780 flow. Second operand has 42 states, 42 states have (on average 4.761904761904762) internal successors, (200), 42 states have internal predecessors, (200), 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 01:16:39,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:39,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:16:39,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:46,555 INFO L116 PetriNetUnfolderBase]: 9428/13716 cut-off events. [2025-04-14 01:16:46,555 INFO L117 PetriNetUnfolderBase]: For 779150/779150 co-relation queries the response was YES. [2025-04-14 01:16:46,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208789 conditions, 13716 events. 9428/13716 cut-off events. For 779150/779150 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 81301 event pairs, 427 based on Foata normal form. 1/13500 useless extension candidates. Maximal degree in co-relation 208275. Up to 9931 conditions per place. [2025-04-14 01:16:46,776 INFO L140 encePairwiseOnDemand]: 17/34 looper letters, 1607 selfloop transitions, 1077 changer transitions 1/2685 dead transitions. [2025-04-14 01:16:46,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 2685 transitions, 84879 flow [2025-04-14 01:16:46,777 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-14 01:16:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-04-14 01:16:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 479 transitions. [2025-04-14 01:16:46,778 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3201871657754011 [2025-04-14 01:16:46,778 INFO L175 Difference]: Start difference. First operand has 478 places, 1463 transitions, 43780 flow. Second operand 44 states and 479 transitions. [2025-04-14 01:16:46,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 2685 transitions, 84879 flow [2025-04-14 01:16:54,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 2685 transitions, 84846 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-04-14 01:16:54,519 INFO L231 Difference]: Finished difference. Result has 537 places, 2251 transitions, 72909 flow [2025-04-14 01:16:54,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=43767, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=803, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=72909, PETRI_PLACES=537, PETRI_TRANSITIONS=2251} [2025-04-14 01:16:54,520 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 505 predicate places. [2025-04-14 01:16:54,520 INFO L485 AbstractCegarLoop]: Abstraction has has 537 places, 2251 transitions, 72909 flow [2025-04-14 01:16:54,520 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.761904761904762) internal successors, (200), 42 states have internal predecessors, (200), 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 01:16:54,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:54,520 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:16:54,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-14 01:16:54,721 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-04-14 01:16:54,721 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:16:54,722 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:54,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1701960794, now seen corresponding path program 2 times [2025-04-14 01:16:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:54,722 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769445837] [2025-04-14 01:16:54,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:16:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:54,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:16:54,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:16:54,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:16:54,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:55,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:55,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769445837] [2025-04-14 01:16:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769445837] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:16:55,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029350611] [2025-04-14 01:16:55,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:16:55,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:16:55,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:16:55,081 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:16:55,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-14 01:16:55,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:16:55,170 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:16:55,170 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:16:55,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:55,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-14 01:16:55,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:16:55,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:16:55,596 INFO L325 Elim1Store]: treesize reduction 24, result has 63.1 percent of original size [2025-04-14 01:16:55,596 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 55 [2025-04-14 01:16:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-14 01:16:55,636 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:16:55,866 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:16:55,866 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:16:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:16:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029350611] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:16:55,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:16:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 37 [2025-04-14 01:16:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251980964] [2025-04-14 01:16:55,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:16:55,951 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-14 01:16:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:55,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-14 01:16:55,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2025-04-14 01:16:55,954 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:16:55,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 2251 transitions, 72909 flow. Second operand has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:16:55,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:55,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:16:55,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:17:03,662 INFO L116 PetriNetUnfolderBase]: 10122/14737 cut-off events. [2025-04-14 01:17:03,663 INFO L117 PetriNetUnfolderBase]: For 912964/912964 co-relation queries the response was YES. [2025-04-14 01:17:03,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233648 conditions, 14737 events. 10122/14737 cut-off events. For 912964/912964 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 88562 event pairs, 392 based on Foata normal form. 1/14447 useless extension candidates. Maximal degree in co-relation 233095. Up to 9839 conditions per place. [2025-04-14 01:17:03,903 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 1285 selfloop transitions, 1303 changer transitions 4/2592 dead transitions. [2025-04-14 01:17:03,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 2592 transitions, 87229 flow [2025-04-14 01:17:03,904 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-14 01:17:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-04-14 01:17:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 252 transitions. [2025-04-14 01:17:03,904 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.32225063938618925 [2025-04-14 01:17:03,904 INFO L175 Difference]: Start difference. First operand has 537 places, 2251 transitions, 72909 flow. Second operand 23 states and 252 transitions. [2025-04-14 01:17:03,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 2592 transitions, 87229 flow [2025-04-14 01:17:13,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 2592 transitions, 85266 flow, removed 929 selfloop flow, removed 4 redundant places. [2025-04-14 01:17:13,909 INFO L231 Difference]: Finished difference. Result has 565 places, 2433 transitions, 81231 flow [2025-04-14 01:17:13,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=71232, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=977, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=81231, PETRI_PLACES=565, PETRI_TRANSITIONS=2433} [2025-04-14 01:17:13,911 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 533 predicate places. [2025-04-14 01:17:13,911 INFO L485 AbstractCegarLoop]: Abstraction has has 565 places, 2433 transitions, 81231 flow [2025-04-14 01:17:13,911 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:17:13,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:13,911 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:17:13,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-14 01:17:14,112 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-04-14 01:17:14,112 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:17:14,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1805355942, now seen corresponding path program 3 times [2025-04-14 01:17:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:14,113 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172370240] [2025-04-14 01:17:14,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:17:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:14,119 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:17:14,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:17:14,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:17:14,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:17:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:14,504 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172370240] [2025-04-14 01:17:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172370240] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:17:14,504 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103420118] [2025-04-14 01:17:14,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:17:14,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:17:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:17:14,506 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:17:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-14 01:17:14,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:17:14,592 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:17:14,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:17:14,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:14,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-14 01:17:14,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:17:14,919 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:17:14,920 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:17:14,947 INFO L325 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2025-04-14 01:17:14,947 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 59 [2025-04-14 01:17:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-14 01:17:15,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:17:15,230 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:17:15,230 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:17:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:17:15,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103420118] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:17:15,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:17:15,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 37 [2025-04-14 01:17:15,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351099173] [2025-04-14 01:17:15,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:17:15,315 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-14 01:17:15,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:15,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-14 01:17:15,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2025-04-14 01:17:15,316 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:17:15,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 2433 transitions, 81231 flow. Second operand has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:17:15,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:15,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:17:15,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:17:24,109 INFO L116 PetriNetUnfolderBase]: 10576/15399 cut-off events. [2025-04-14 01:17:24,109 INFO L117 PetriNetUnfolderBase]: For 982469/982469 co-relation queries the response was YES. [2025-04-14 01:17:24,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245820 conditions, 15399 events. 10576/15399 cut-off events. For 982469/982469 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 93179 event pairs, 418 based on Foata normal form. 1/15065 useless extension candidates. Maximal degree in co-relation 245354. Up to 10039 conditions per place. [2025-04-14 01:17:24,365 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 1314 selfloop transitions, 1344 changer transitions 4/2662 dead transitions. [2025-04-14 01:17:24,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 2662 transitions, 91178 flow [2025-04-14 01:17:24,366 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-14 01:17:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-04-14 01:17:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 318 transitions. [2025-04-14 01:17:24,366 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.301707779886148 [2025-04-14 01:17:24,366 INFO L175 Difference]: Start difference. First operand has 565 places, 2433 transitions, 81231 flow. Second operand 31 states and 318 transitions. [2025-04-14 01:17:24,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 2662 transitions, 91178 flow [2025-04-14 01:17:35,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 2662 transitions, 89618 flow, removed 395 selfloop flow, removed 7 redundant places. [2025-04-14 01:17:35,186 INFO L231 Difference]: Finished difference. Result has 595 places, 2492 transitions, 84924 flow [2025-04-14 01:17:35,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=79695, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=84924, PETRI_PLACES=595, PETRI_TRANSITIONS=2492} [2025-04-14 01:17:35,188 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 563 predicate places. [2025-04-14 01:17:35,188 INFO L485 AbstractCegarLoop]: Abstraction has has 595 places, 2492 transitions, 84924 flow [2025-04-14 01:17:35,188 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:17:35,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:35,188 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:17:35,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-14 01:17:35,388 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-14 01:17:35,389 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:17:35,389 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1767099808, now seen corresponding path program 4 times [2025-04-14 01:17:35,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:35,390 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579285547] [2025-04-14 01:17:35,390 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:17:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:35,395 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:17:35,409 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:17:35,409 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:17:35,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:17:35,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:35,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579285547] [2025-04-14 01:17:35,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579285547] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:17:35,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079696029] [2025-04-14 01:17:35,818 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:17:35,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:17:35,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:17:35,820 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:17:35,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-14 01:17:35,894 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:17:35,914 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:17:35,915 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:17:35,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:35,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-14 01:17:35,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:17:36,184 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:17:36,185 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 179 [2025-04-14 01:17:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:17:36,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:17:36,704 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:17:36,704 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:17:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:17:36,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079696029] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:17:36,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:17:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 31 [2025-04-14 01:17:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690609215] [2025-04-14 01:17:36,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:17:36,782 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-14 01:17:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:36,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-14 01:17:36,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2025-04-14 01:17:36,783 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:17:36,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 2492 transitions, 84924 flow. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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 01:17:36,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:36,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:17:36,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:17:46,083 INFO L116 PetriNetUnfolderBase]: 10838/15829 cut-off events. [2025-04-14 01:17:46,083 INFO L117 PetriNetUnfolderBase]: For 1016275/1016275 co-relation queries the response was YES. [2025-04-14 01:17:46,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256713 conditions, 15829 events. 10838/15829 cut-off events. For 1016275/1016275 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 96591 event pairs, 537 based on Foata normal form. 1/15492 useless extension candidates. Maximal degree in co-relation 256400. Up to 13495 conditions per place. [2025-04-14 01:17:46,359 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 1866 selfloop transitions, 826 changer transitions 3/2695 dead transitions. [2025-04-14 01:17:46,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 2695 transitions, 94347 flow [2025-04-14 01:17:46,360 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-14 01:17:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-04-14 01:17:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 262 transitions. [2025-04-14 01:17:46,361 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.30823529411764705 [2025-04-14 01:17:46,361 INFO L175 Difference]: Start difference. First operand has 595 places, 2492 transitions, 84924 flow. Second operand 25 states and 262 transitions. [2025-04-14 01:17:46,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 2695 transitions, 94347 flow [2025-04-14 01:17:58,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 2695 transitions, 93050 flow, removed 531 selfloop flow, removed 8 redundant places. [2025-04-14 01:17:58,336 INFO L231 Difference]: Finished difference. Result has 622 places, 2589 transitions, 88749 flow [2025-04-14 01:17:58,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=83685, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=734, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=88749, PETRI_PLACES=622, PETRI_TRANSITIONS=2589} [2025-04-14 01:17:58,339 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 590 predicate places. [2025-04-14 01:17:58,339 INFO L485 AbstractCegarLoop]: Abstraction has has 622 places, 2589 transitions, 88749 flow [2025-04-14 01:17:58,339 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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 01:17:58,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:58,339 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:17:58,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-14 01:17:58,540 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:17:58,540 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:17:58,541 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1170478818, now seen corresponding path program 5 times [2025-04-14 01:17:58,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:58,541 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717468118] [2025-04-14 01:17:58,541 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:17:58,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:58,549 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:17:58,559 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:17:58,559 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:17:58,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:17:59,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:59,181 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717468118] [2025-04-14 01:17:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717468118] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:17:59,181 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002040027] [2025-04-14 01:17:59,181 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:17:59,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:17:59,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:17:59,183 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:17:59,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-14 01:17:59,250 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:17:59,270 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:17:59,270 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:17:59,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:59,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-14 01:17:59,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:17:59,636 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:17:59,637 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 65 [2025-04-14 01:17:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-14 01:17:59,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:17:59,901 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:17:59,901 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:18:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:18:00,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002040027] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:00,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:00,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 38 [2025-04-14 01:18:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271685510] [2025-04-14 01:18:00,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:00,007 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-14 01:18:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:00,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-14 01:18:00,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2025-04-14 01:18:00,008 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:18:00,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 2589 transitions, 88749 flow. Second operand has 40 states, 40 states have (on average 4.85) internal successors, (194), 40 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:00,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:00,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:18:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:10,237 INFO L116 PetriNetUnfolderBase]: 11217/16398 cut-off events. [2025-04-14 01:18:10,237 INFO L117 PetriNetUnfolderBase]: For 1040501/1040501 co-relation queries the response was YES. [2025-04-14 01:18:10,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266427 conditions, 16398 events. 11217/16398 cut-off events. For 1040501/1040501 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 100845 event pairs, 490 based on Foata normal form. 1/16038 useless extension candidates. Maximal degree in co-relation 266044. Up to 11072 conditions per place. [2025-04-14 01:18:10,521 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 1389 selfloop transitions, 1449 changer transitions 3/2841 dead transitions. [2025-04-14 01:18:10,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 2841 transitions, 100282 flow [2025-04-14 01:18:10,522 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-14 01:18:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-04-14 01:18:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 311 transitions. [2025-04-14 01:18:10,522 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.29506641366223907 [2025-04-14 01:18:10,522 INFO L175 Difference]: Start difference. First operand has 622 places, 2589 transitions, 88749 flow. Second operand 31 states and 311 transitions. [2025-04-14 01:18:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 2841 transitions, 100282 flow [2025-04-14 01:18:22,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 2841 transitions, 99017 flow, removed 327 selfloop flow, removed 7 redundant places. [2025-04-14 01:18:22,870 INFO L231 Difference]: Finished difference. Result has 652 places, 2667 transitions, 93999 flow [2025-04-14 01:18:22,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=87484, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=93999, PETRI_PLACES=652, PETRI_TRANSITIONS=2667} [2025-04-14 01:18:22,872 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 620 predicate places. [2025-04-14 01:18:22,872 INFO L485 AbstractCegarLoop]: Abstraction has has 652 places, 2667 transitions, 93999 flow [2025-04-14 01:18:22,873 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.85) internal successors, (194), 40 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:22,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:22,873 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:18:22,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-04-14 01:18:23,073 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:23,073 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:23,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1368886878, now seen corresponding path program 6 times [2025-04-14 01:18:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:23,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696115144] [2025-04-14 01:18:23,074 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:18:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:23,080 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:18:23,096 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:18:23,096 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:18:23,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:18:23,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:23,451 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696115144] [2025-04-14 01:18:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696115144] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:23,451 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275768974] [2025-04-14 01:18:23,451 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:18:23,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:23,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:23,453 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:23,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-14 01:18:23,523 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:18:23,543 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:18:23,543 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:18:23,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:23,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-14 01:18:23,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:23,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:18:23,912 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:18:23,938 INFO L325 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2025-04-14 01:18:23,938 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 59 [2025-04-14 01:18:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-14 01:18:24,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:24,269 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:18:24,269 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:18:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:18:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275768974] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:24,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:24,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 37 [2025-04-14 01:18:24,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95539872] [2025-04-14 01:18:24,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:24,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-14 01:18:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:24,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-14 01:18:24,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482 [2025-04-14 01:18:24,340 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:18:24,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 2667 transitions, 93999 flow. Second operand has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:18:24,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:24,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:18:24,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:35,680 INFO L116 PetriNetUnfolderBase]: 11670/17167 cut-off events. [2025-04-14 01:18:35,680 INFO L117 PetriNetUnfolderBase]: For 1121225/1121225 co-relation queries the response was YES. [2025-04-14 01:18:36,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283263 conditions, 17167 events. 11670/17167 cut-off events. For 1121225/1121225 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 107603 event pairs, 406 based on Foata normal form. 1/16801 useless extension candidates. Maximal degree in co-relation 282904. Up to 10449 conditions per place. [2025-04-14 01:18:36,126 INFO L140 encePairwiseOnDemand]: 14/34 looper letters, 1281 selfloop transitions, 1765 changer transitions 6/3052 dead transitions. [2025-04-14 01:18:36,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 3052 transitions, 107738 flow [2025-04-14 01:18:36,127 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-14 01:18:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-04-14 01:18:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 466 transitions. [2025-04-14 01:18:36,128 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2979539641943734 [2025-04-14 01:18:36,128 INFO L175 Difference]: Start difference. First operand has 652 places, 2667 transitions, 93999 flow. Second operand 46 states and 466 transitions. [2025-04-14 01:18:36,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 3052 transitions, 107738 flow [2025-04-14 01:18:49,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 3052 transitions, 106052 flow, removed 168 selfloop flow, removed 19 redundant places. [2025-04-14 01:18:49,580 INFO L231 Difference]: Finished difference. Result has 692 places, 2845 transitions, 101171 flow [2025-04-14 01:18:49,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=92390, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=101171, PETRI_PLACES=692, PETRI_TRANSITIONS=2845} [2025-04-14 01:18:49,582 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 660 predicate places. [2025-04-14 01:18:49,582 INFO L485 AbstractCegarLoop]: Abstraction has has 692 places, 2845 transitions, 101171 flow [2025-04-14 01:18:49,582 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:18:49,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:49,582 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:18:49,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-04-14 01:18:49,783 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:49,783 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:49,784 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1233901136, now seen corresponding path program 7 times [2025-04-14 01:18:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:49,784 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118577985] [2025-04-14 01:18:49,784 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:49,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:18:49,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:18:49,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:49,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:18:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:50,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118577985] [2025-04-14 01:18:50,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118577985] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:50,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515707293] [2025-04-14 01:18:50,502 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:50,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:50,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:50,504 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:50,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-14 01:18:50,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:18:50,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:18:50,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:50,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:50,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-14 01:18:50,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:50,606 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:18:50,651 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-14 01:18:50,678 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:18:50,678 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:18:50,699 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-14 01:18:50,722 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-14 01:18:51,059 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:18:51,060 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 47 [2025-04-14 01:18:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:51,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:18:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515707293] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:51,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:51,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 11] total 42 [2025-04-14 01:18:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026500469] [2025-04-14 01:18:51,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:51,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-04-14 01:18:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:51,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-04-14 01:18:51,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2025-04-14 01:18:51,430 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:18:51,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 2845 transitions, 101171 flow. Second operand has 44 states, 44 states have (on average 4.704545454545454) internal successors, (207), 44 states have internal predecessors, (207), 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 01:18:51,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:51,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:18:51,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:08,980 INFO L116 PetriNetUnfolderBase]: 12409/18276 cut-off events. [2025-04-14 01:19:08,981 INFO L117 PetriNetUnfolderBase]: For 1229857/1229857 co-relation queries the response was YES. [2025-04-14 01:19:09,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303724 conditions, 18276 events. 12409/18276 cut-off events. For 1229857/1229857 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 115790 event pairs, 607 based on Foata normal form. 1/17916 useless extension candidates. Maximal degree in co-relation 303428. Up to 14748 conditions per place. [2025-04-14 01:19:09,414 INFO L140 encePairwiseOnDemand]: 14/34 looper letters, 2297 selfloop transitions, 1082 changer transitions 3/3382 dead transitions. [2025-04-14 01:19:09,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 3382 transitions, 116852 flow [2025-04-14 01:19:09,414 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2025-04-14 01:19:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2025-04-14 01:19:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 820 transitions. [2025-04-14 01:19:09,418 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2709847984137475 [2025-04-14 01:19:09,418 INFO L175 Difference]: Start difference. First operand has 692 places, 2845 transitions, 101171 flow. Second operand 89 states and 820 transitions. [2025-04-14 01:19:09,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 3382 transitions, 116852 flow [2025-04-14 01:19:26,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 752 places, 3382 transitions, 113174 flow, removed 771 selfloop flow, removed 27 redundant places. [2025-04-14 01:19:26,270 INFO L231 Difference]: Finished difference. Result has 777 places, 3049 transitions, 105736 flow [2025-04-14 01:19:26,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=97958, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=895, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=105736, PETRI_PLACES=777, PETRI_TRANSITIONS=3049} [2025-04-14 01:19:26,273 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 745 predicate places. [2025-04-14 01:19:26,273 INFO L485 AbstractCegarLoop]: Abstraction has has 777 places, 3049 transitions, 105736 flow [2025-04-14 01:19:26,273 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.704545454545454) internal successors, (207), 44 states have internal predecessors, (207), 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 01:19:26,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:26,273 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:19:26,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-04-14 01:19:26,473 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2025-04-14 01:19:26,473 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:26,474 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash 413824678, now seen corresponding path program 8 times [2025-04-14 01:19:26,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:26,475 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992598575] [2025-04-14 01:19:26,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:19:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:26,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:19:26,492 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:19:26,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:19:26,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:19:26,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:26,847 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992598575] [2025-04-14 01:19:26,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992598575] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:19:26,847 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713481151] [2025-04-14 01:19:26,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:19:26,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:19:26,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:19:26,849 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:19:26,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-14 01:19:26,919 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:19:26,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:19:26,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:19:26,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:26,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-14 01:19:26,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:19:27,306 INFO L325 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2025-04-14 01:19:27,306 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2025-04-14 01:19:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-14 01:19:27,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:19:27,609 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:19:27,609 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:19:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:19:27,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713481151] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:19:27,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:19:27,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 36 [2025-04-14 01:19:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062918252] [2025-04-14 01:19:27,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:19:27,712 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-14 01:19:27,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:27,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-14 01:19:27,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2025-04-14 01:19:27,713 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:19:27,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 3049 transitions, 105736 flow. Second operand has 38 states, 38 states have (on average 4.815789473684211) internal successors, (183), 38 states have internal predecessors, (183), 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 01:19:27,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:27,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:19:27,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:41,299 INFO L116 PetriNetUnfolderBase]: 13277/19535 cut-off events. [2025-04-14 01:19:41,299 INFO L117 PetriNetUnfolderBase]: For 1281867/1281867 co-relation queries the response was YES. [2025-04-14 01:19:41,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320891 conditions, 19535 events. 13277/19535 cut-off events. For 1281867/1281867 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 124479 event pairs, 466 based on Foata normal form. 1/19057 useless extension candidates. Maximal degree in co-relation 320404. Up to 12702 conditions per place. [2025-04-14 01:19:41,718 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 1655 selfloop transitions, 1771 changer transitions 4/3430 dead transitions. [2025-04-14 01:19:41,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 3430 transitions, 122300 flow [2025-04-14 01:19:41,719 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-14 01:19:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-04-14 01:19:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 441 transitions. [2025-04-14 01:19:41,720 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3163558106169297 [2025-04-14 01:19:41,720 INFO L175 Difference]: Start difference. First operand has 777 places, 3049 transitions, 105736 flow. Second operand 41 states and 441 transitions. [2025-04-14 01:19:41,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 3430 transitions, 122300 flow [2025-04-14 01:20:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 3430 transitions, 120328 flow, removed 609 selfloop flow, removed 22 redundant places. [2025-04-14 01:20:00,211 INFO L231 Difference]: Finished difference. Result has 813 places, 3240 transitions, 115658 flow [2025-04-14 01:20:00,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=103869, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3049, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1602, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=115658, PETRI_PLACES=813, PETRI_TRANSITIONS=3240} [2025-04-14 01:20:00,214 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 781 predicate places. [2025-04-14 01:20:00,214 INFO L485 AbstractCegarLoop]: Abstraction has has 813 places, 3240 transitions, 115658 flow [2025-04-14 01:20:00,214 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.815789473684211) internal successors, (183), 38 states have internal predecessors, (183), 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 01:20:00,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:00,214 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:00,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-14 01:20:00,414 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:00,415 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:00,415 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1186416244, now seen corresponding path program 1 times [2025-04-14 01:20:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:00,415 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073065781] [2025-04-14 01:20:00,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:20:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:00,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:20:00,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:20:00,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:20:00,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:20:01,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:01,092 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073065781] [2025-04-14 01:20:01,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073065781] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:01,092 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883404715] [2025-04-14 01:20:01,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:20:01,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:01,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:01,094 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:01,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-14 01:20:01,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:20:01,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:20:01,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:20:01,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:01,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-14 01:20:01,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:01,193 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:20:01,238 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-14 01:20:01,265 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:20:01,265 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:20:01,287 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-14 01:20:01,309 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-14 01:20:01,652 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:01,652 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 15 [2025-04-14 01:20:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:20:01,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:20:02,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883404715] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:20:02,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:20:02,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 11] total 41 [2025-04-14 01:20:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446808534] [2025-04-14 01:20:02,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:20:02,029 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-14 01:20:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:02,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-14 01:20:02,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2025-04-14 01:20:02,030 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:20:02,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 3240 transitions, 115658 flow. Second operand has 43 states, 43 states have (on average 4.767441860465116) internal successors, (205), 43 states have internal predecessors, (205), 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 01:20:02,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:02,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:20:02,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:19,944 INFO L116 PetriNetUnfolderBase]: 13933/20511 cut-off events. [2025-04-14 01:20:19,945 INFO L117 PetriNetUnfolderBase]: For 1436510/1436510 co-relation queries the response was YES. [2025-04-14 01:20:20,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346809 conditions, 20511 events. 13933/20511 cut-off events. For 1436510/1436510 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 131921 event pairs, 740 based on Foata normal form. 1/20101 useless extension candidates. Maximal degree in co-relation 346286. Up to 14608 conditions per place. [2025-04-14 01:20:20,367 INFO L140 encePairwiseOnDemand]: 18/34 looper letters, 2166 selfloop transitions, 1671 changer transitions 1/3838 dead transitions. [2025-04-14 01:20:20,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 3838 transitions, 138201 flow [2025-04-14 01:20:20,368 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-04-14 01:20:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2025-04-14 01:20:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 679 transitions. [2025-04-14 01:20:20,369 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31699346405228757 [2025-04-14 01:20:20,369 INFO L175 Difference]: Start difference. First operand has 813 places, 3240 transitions, 115658 flow. Second operand 63 states and 679 transitions. [2025-04-14 01:20:20,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 875 places, 3838 transitions, 138201 flow [2025-04-14 01:20:40,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 3838 transitions, 133746 flow, removed 1851 selfloop flow, removed 6 redundant places. [2025-04-14 01:20:40,967 INFO L231 Difference]: Finished difference. Result has 877 places, 3372 transitions, 120788 flow [2025-04-14 01:20:40,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=111333, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=120788, PETRI_PLACES=877, PETRI_TRANSITIONS=3372} [2025-04-14 01:20:40,970 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 845 predicate places. [2025-04-14 01:20:40,970 INFO L485 AbstractCegarLoop]: Abstraction has has 877 places, 3372 transitions, 120788 flow [2025-04-14 01:20:40,970 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.767441860465116) internal successors, (205), 43 states have internal predecessors, (205), 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 01:20:40,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:40,971 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:40,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-04-14 01:20:41,171 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:41,171 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:41,172 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2116304332, now seen corresponding path program 2 times [2025-04-14 01:20:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:41,172 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711401257] [2025-04-14 01:20:41,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:20:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:41,179 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:20:41,205 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:20:41,205 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:41,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:20:41,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:41,863 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711401257] [2025-04-14 01:20:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711401257] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:41,863 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200122681] [2025-04-14 01:20:41,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:20:41,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:41,865 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:41,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-14 01:20:41,944 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:20:41,964 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:20:41,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:41,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:41,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-14 01:20:41,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:42,084 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:20:42,592 INFO L325 Elim1Store]: treesize reduction 144, result has 38.2 percent of original size [2025-04-14 01:20:42,593 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 55 treesize of output 103 [2025-04-14 01:20:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:20:43,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200122681] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:20:43,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:20:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 16] total 47 [2025-04-14 01:20:43,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587427301] [2025-04-14 01:20:43,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:20:43,524 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-04-14 01:20:43,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:43,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-04-14 01:20:43,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2080, Unknown=0, NotChecked=0, Total=2352 [2025-04-14 01:20:43,525 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:20:43,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 3372 transitions, 120788 flow. Second operand has 49 states, 49 states have (on average 4.530612244897959) internal successors, (222), 49 states have internal predecessors, (222), 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 01:20:43,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:43,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:20:43,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:21:12,741 INFO L116 PetriNetUnfolderBase]: 16441/24182 cut-off events. [2025-04-14 01:21:12,741 INFO L117 PetriNetUnfolderBase]: For 1681139/1681139 co-relation queries the response was YES. [2025-04-14 01:21:13,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402923 conditions, 24182 events. 16441/24182 cut-off events. For 1681139/1681139 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 157987 event pairs, 651 based on Foata normal form. 2/23707 useless extension candidates. Maximal degree in co-relation 402359. Up to 13042 conditions per place. [2025-04-14 01:21:13,341 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 1633 selfloop transitions, 3507 changer transitions 10/5150 dead transitions. [2025-04-14 01:21:13,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1047 places, 5150 transitions, 179954 flow [2025-04-14 01:21:13,342 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2025-04-14 01:21:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2025-04-14 01:21:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 1492 transitions. [2025-04-14 01:21:13,344 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2566219470244238 [2025-04-14 01:21:13,344 INFO L175 Difference]: Start difference. First operand has 877 places, 3372 transitions, 120788 flow. Second operand 171 states and 1492 transitions. [2025-04-14 01:21:13,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1047 places, 5150 transitions, 179954 flow [2025-04-14 01:21:39,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 5150 transitions, 175555 flow, removed 1575 selfloop flow, removed 19 redundant places. [2025-04-14 01:21:39,885 INFO L231 Difference]: Finished difference. Result has 1052 places, 4611 transitions, 168243 flow [2025-04-14 01:21:39,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=117608, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=171, PETRI_FLOW=168243, PETRI_PLACES=1052, PETRI_TRANSITIONS=4611} [2025-04-14 01:21:39,888 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1020 predicate places. [2025-04-14 01:21:39,888 INFO L485 AbstractCegarLoop]: Abstraction has has 1052 places, 4611 transitions, 168243 flow [2025-04-14 01:21:39,888 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.530612244897959) internal successors, (222), 49 states have internal predecessors, (222), 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 01:21:39,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:21:39,888 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:21:39,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-14 01:21:40,089 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-04-14 01:21:40,089 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:21:40,090 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:21:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -886381038, now seen corresponding path program 3 times [2025-04-14 01:21:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:21:40,090 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694045475] [2025-04-14 01:21:40,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:21:40,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:21:40,097 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:21:40,117 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:21:40,118 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:21:40,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:21:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:21:40,618 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694045475] [2025-04-14 01:21:40,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694045475] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:21:40,618 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864043067] [2025-04-14 01:21:40,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:21:40,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:21:40,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:21:40,620 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:21:40,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-14 01:21:40,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:21:40,717 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:21:40,717 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:21:40,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:40,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-14 01:21:40,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:21:40,833 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:21:41,361 INFO L325 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2025-04-14 01:21:41,361 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2025-04-14 01:21:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:21:41,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:21:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864043067] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:21:41,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:21:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 16] total 45 [2025-04-14 01:21:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186981614] [2025-04-14 01:21:41,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:21:41,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-14 01:21:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:21:41,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-14 01:21:41,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1922, Unknown=0, NotChecked=0, Total=2162 [2025-04-14 01:21:41,861 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:21:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 4611 transitions, 168243 flow. Second operand has 47 states, 47 states have (on average 4.617021276595745) internal successors, (217), 47 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:21:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:21:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:21:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:22:10,549 INFO L116 PetriNetUnfolderBase]: 16731/24629 cut-off events. [2025-04-14 01:22:10,550 INFO L117 PetriNetUnfolderBase]: For 1722306/1722306 co-relation queries the response was YES. [2025-04-14 01:22:11,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417989 conditions, 24629 events. 16731/24629 cut-off events. For 1722306/1722306 co-relation queries the response was YES. Maximal size of possible extension queue 1657. Compared 161526 event pairs, 793 based on Foata normal form. 2/24154 useless extension candidates. Maximal degree in co-relation 417391. Up to 16299 conditions per place. [2025-04-14 01:22:11,176 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 1921 selfloop transitions, 3109 changer transitions 6/5036 dead transitions. [2025-04-14 01:22:11,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1155 places, 5036 transitions, 185056 flow [2025-04-14 01:22:11,176 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-04-14 01:22:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-04-14 01:22:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 939 transitions. [2025-04-14 01:22:11,178 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2605438401775805 [2025-04-14 01:22:11,178 INFO L175 Difference]: Start difference. First operand has 1052 places, 4611 transitions, 168243 flow. Second operand 106 states and 939 transitions. [2025-04-14 01:22:11,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1155 places, 5036 transitions, 185056 flow [2025-04-14 01:22:42,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1106 places, 5036 transitions, 175721 flow, removed 2945 selfloop flow, removed 49 redundant places. [2025-04-14 01:22:42,261 INFO L231 Difference]: Finished difference. Result has 1121 places, 4736 transitions, 172618 flow [2025-04-14 01:22:42,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=159334, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2984, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=172618, PETRI_PLACES=1121, PETRI_TRANSITIONS=4736} [2025-04-14 01:22:42,265 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1089 predicate places. [2025-04-14 01:22:42,265 INFO L485 AbstractCegarLoop]: Abstraction has has 1121 places, 4736 transitions, 172618 flow [2025-04-14 01:22:42,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.617021276595745) internal successors, (217), 47 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:22:42,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:22:42,265 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:22:42,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-14 01:22:42,465 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-04-14 01:22:42,466 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:22:42,466 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:22:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1410547326, now seen corresponding path program 4 times [2025-04-14 01:22:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:22:42,467 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134708040] [2025-04-14 01:22:42,467 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:22:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:22:42,473 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:22:42,482 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:22:42,483 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:22:42,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:22:42,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:22:42,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134708040] [2025-04-14 01:22:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134708040] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:22:42,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051161666] [2025-04-14 01:22:42,948 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:22:42,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:22:42,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:22:42,950 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:22:42,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-14 01:22:43,025 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:22:43,044 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:22:43,045 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:22:43,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:43,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-04-14 01:22:43,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:22:43,443 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:43,443 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 179 [2025-04-14 01:22:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:22:43,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:22:43,916 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:43,917 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2025-04-14 01:22:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:22:44,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051161666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:22:44,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:22:44,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 36 [2025-04-14 01:22:44,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469011906] [2025-04-14 01:22:44,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:22:44,054 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-14 01:22:44,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:22:44,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-14 01:22:44,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2025-04-14 01:22:44,055 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:22:44,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1121 places, 4736 transitions, 172618 flow. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 01:22:44,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:22:44,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:22:44,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:23:16,934 INFO L116 PetriNetUnfolderBase]: 18305/26924 cut-off events. [2025-04-14 01:23:16,934 INFO L117 PetriNetUnfolderBase]: For 1797200/1797200 co-relation queries the response was YES. [2025-04-14 01:23:17,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450238 conditions, 26924 events. 18305/26924 cut-off events. For 1797200/1797200 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 177647 event pairs, 737 based on Foata normal form. 4/26375 useless extension candidates. Maximal degree in co-relation 449877. Up to 16548 conditions per place. [2025-04-14 01:23:17,557 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 1942 selfloop transitions, 3596 changer transitions 8/5546 dead transitions. [2025-04-14 01:23:17,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1229 places, 5546 transitions, 201906 flow [2025-04-14 01:23:17,558 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-04-14 01:23:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2025-04-14 01:23:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 1009 transitions. [2025-04-14 01:23:17,560 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2697860962566845 [2025-04-14 01:23:17,560 INFO L175 Difference]: Start difference. First operand has 1121 places, 4736 transitions, 172618 flow. Second operand 110 states and 1009 transitions. [2025-04-14 01:23:17,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1229 places, 5546 transitions, 201906 flow [2025-04-14 01:23:53,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1164 places, 5546 transitions, 200533 flow, removed 95 selfloop flow, removed 65 redundant places. [2025-04-14 01:23:53,427 INFO L231 Difference]: Finished difference. Result has 1183 places, 5172 transitions, 194458 flow [2025-04-14 01:23:53,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=171327, PETRI_DIFFERENCE_MINUEND_PLACES=1055, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=194458, PETRI_PLACES=1183, PETRI_TRANSITIONS=5172} [2025-04-14 01:23:53,430 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1151 predicate places. [2025-04-14 01:23:53,430 INFO L485 AbstractCegarLoop]: Abstraction has has 1183 places, 5172 transitions, 194458 flow [2025-04-14 01:23:53,430 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 01:23:53,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:23:53,430 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:23:53,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-14 01:23:53,630 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-04-14 01:23:53,631 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:23:53,632 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:23:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1576781106, now seen corresponding path program 5 times [2025-04-14 01:23:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:23:53,632 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60027601] [2025-04-14 01:23:53,632 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:23:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:23:53,638 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:23:53,647 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:23:53,647 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:23:53,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:23:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:23:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:23:54,262 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60027601] [2025-04-14 01:23:54,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60027601] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:23:54,262 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402885602] [2025-04-14 01:23:54,262 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:23:54,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:23:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:23:54,264 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:23:54,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-14 01:23:54,340 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:23:54,362 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:23:54,362 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:23:54,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:23:54,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-04-14 01:23:54,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:23:54,369 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-04-14 01:23:54,411 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:23:54,433 INFO L325 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-04-14 01:23:54,433 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-04-14 01:23:54,455 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-14 01:23:54,461 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-14 01:23:54,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:23:54,887 INFO L325 Elim1Store]: treesize reduction 8, result has 97.2 percent of original size [2025-04-14 01:23:54,887 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 64 treesize of output 289 [2025-04-14 01:23:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:23:55,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:23:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:23:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402885602] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:23:55,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:23:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 9] total 33 [2025-04-14 01:23:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308614188] [2025-04-14 01:23:55,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:23:55,526 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-14 01:23:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:23:55,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-14 01:23:55,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2025-04-14 01:23:55,527 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:23:55,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1183 places, 5172 transitions, 194458 flow. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 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 01:23:55,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:23:55,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:23:55,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:24:24,990 INFO L116 PetriNetUnfolderBase]: 18562/27343 cut-off events. [2025-04-14 01:24:24,990 INFO L117 PetriNetUnfolderBase]: For 1886712/1886712 co-relation queries the response was YES. [2025-04-14 01:24:25,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472356 conditions, 27343 events. 18562/27343 cut-off events. For 1886712/1886712 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 181258 event pairs, 1163 based on Foata normal form. 7/26797 useless extension candidates. Maximal degree in co-relation 472006. Up to 20306 conditions per place. [2025-04-14 01:24:25,929 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 3115 selfloop transitions, 2251 changer transitions 6/5372 dead transitions. [2025-04-14 01:24:25,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1200 places, 5372 transitions, 211309 flow [2025-04-14 01:24:25,930 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-14 01:24:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-14 01:24:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 213 transitions. [2025-04-14 01:24:25,931 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.32972136222910214 [2025-04-14 01:24:25,931 INFO L175 Difference]: Start difference. First operand has 1183 places, 5172 transitions, 194458 flow. Second operand 19 states and 213 transitions. [2025-04-14 01:24:25,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1200 places, 5372 transitions, 211309 flow [2025-04-14 01:25:06,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1150 places, 5372 transitions, 202179 flow, removed 3151 selfloop flow, removed 50 redundant places. [2025-04-14 01:25:06,872 INFO L231 Difference]: Finished difference. Result has 1154 places, 5252 transitions, 193703 flow [2025-04-14 01:25:06,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=185428, PETRI_DIFFERENCE_MINUEND_PLACES=1132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=193703, PETRI_PLACES=1154, PETRI_TRANSITIONS=5252} [2025-04-14 01:25:06,875 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1122 predicate places. [2025-04-14 01:25:06,875 INFO L485 AbstractCegarLoop]: Abstraction has has 1154 places, 5252 transitions, 193703 flow [2025-04-14 01:25:06,875 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 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 01:25:06,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:25:06,875 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:25:06,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-04-14 01:25:07,076 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:25:07,076 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:25:07,077 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:25:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1292573400, now seen corresponding path program 9 times [2025-04-14 01:25:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:25:07,077 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004794807] [2025-04-14 01:25:07,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:25:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:25:07,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:25:07,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:25:07,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:25:07,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:25:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:25:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:25:07,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004794807] [2025-04-14 01:25:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004794807] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:25:07,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259132690] [2025-04-14 01:25:07,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:25:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:25:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:25:07,499 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:25:07,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-14 01:25:07,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:25:07,597 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:25:07,597 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:25:07,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:25:07,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-14 01:25:07,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:25:07,949 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:25:07,950 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:25:07,977 INFO L325 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2025-04-14 01:25:07,977 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 59 [2025-04-14 01:25:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-14 01:25:08,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:25:08,282 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:25:08,282 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:25:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:25:08,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259132690] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:25:08,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:25:08,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 37 [2025-04-14 01:25:08,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159113493] [2025-04-14 01:25:08,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:25:08,441 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-14 01:25:08,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:25:08,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-14 01:25:08,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2025-04-14 01:25:08,441 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:25:08,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1154 places, 5252 transitions, 193703 flow. Second operand has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:25:08,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:25:08,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:25:08,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:25:44,221 INFO L116 PetriNetUnfolderBase]: 18697/27587 cut-off events. [2025-04-14 01:25:44,221 INFO L117 PetriNetUnfolderBase]: For 1858645/1858645 co-relation queries the response was YES. [2025-04-14 01:25:45,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467136 conditions, 27587 events. 18697/27587 cut-off events. For 1858645/1858645 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 183797 event pairs, 1151 based on Foata normal form. 1/27035 useless extension candidates. Maximal degree in co-relation 466685. Up to 21072 conditions per place. [2025-04-14 01:25:45,481 INFO L140 encePairwiseOnDemand]: 16/34 looper letters, 3349 selfloop transitions, 2093 changer transitions 4/5446 dead transitions. [2025-04-14 01:25:45,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1187 places, 5446 transitions, 208132 flow [2025-04-14 01:25:45,482 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-14 01:25:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-04-14 01:25:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 347 transitions. [2025-04-14 01:25:45,482 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.30017301038062283 [2025-04-14 01:25:45,482 INFO L175 Difference]: Start difference. First operand has 1154 places, 5252 transitions, 193703 flow. Second operand 34 states and 347 transitions. [2025-04-14 01:25:45,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1187 places, 5446 transitions, 208132 flow [2025-04-14 01:26:26,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1175 places, 5446 transitions, 205844 flow, removed 341 selfloop flow, removed 12 redundant places. [2025-04-14 01:26:26,983 INFO L231 Difference]: Finished difference. Result has 1182 places, 5299 transitions, 197153 flow [2025-04-14 01:26:26,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=191415, PETRI_DIFFERENCE_MINUEND_PLACES=1142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2057, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=197153, PETRI_PLACES=1182, PETRI_TRANSITIONS=5299} [2025-04-14 01:26:26,986 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 1150 predicate places. [2025-04-14 01:26:26,986 INFO L485 AbstractCegarLoop]: Abstraction has has 1182 places, 5299 transitions, 197153 flow [2025-04-14 01:26:26,986 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.846153846153846) internal successors, (189), 39 states have internal predecessors, (189), 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 01:26:26,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:26:26,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 01:26:26,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-04-14 01:26:27,186 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:26:27,187 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:26:27,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:26:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1903094408, now seen corresponding path program 10 times [2025-04-14 01:26:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:26:27,188 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674269214] [2025-04-14 01:26:27,188 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:26:27,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:26:27,194 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:26:27,203 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:26:27,203 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:26:27,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:26:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:26:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:26:27,752 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674269214] [2025-04-14 01:26:27,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674269214] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:26:27,752 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289749815] [2025-04-14 01:26:27,752 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:26:27,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:26:27,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:26:27,754 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:26:27,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-14 01:26:27,831 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:26:27,851 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:26:27,851 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:26:27,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:26:27,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-14 01:26:27,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:26:28,144 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:26:28,144 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 179 [2025-04-14 01:26:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:26:28,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:26:28,576 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:26:28,577 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2025-04-14 01:26:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-14 01:26:28,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289749815] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:26:28,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:26:28,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 34 [2025-04-14 01:26:28,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521222562] [2025-04-14 01:26:28,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:26:28,650 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-14 01:26:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:26:28,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-14 01:26:28,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2025-04-14 01:26:28,651 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2025-04-14 01:26:28,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1182 places, 5299 transitions, 197153 flow. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 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 01:26:28,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:26:28,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2025-04-14 01:26:28,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2025-04-14 01:26:47,422 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:26:47,422 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:26:47,741 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-14 01:26:47,743 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 01:26:47,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-14 01:26:47,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2025-04-14 01:26:47,944 WARN L610 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (36states, 3/34 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 295391 conditions, 15927 events (10852/15926 cut-off events. For 1258858/1258858 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 110093 event pairs, 429 based on Foata normal form. 0/17029 useless extension candidates. Maximal degree in co-relation 295046. Up to 9518 conditions per place.). [2025-04-14 01:26:47,945 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 01:26:47,945 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 01:26:47,945 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 01:26:47,946 INFO L422 BasicCegarLoop]: Path program histogram: [36, 10, 5, 5, 2, 1, 1, 1, 1] [2025-04-14 01:26:47,951 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 01:26:47,951 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 01:26:47,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 01:26:47 BasicIcfg [2025-04-14 01:26:47,954 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 01:26:47,954 INFO L158 Benchmark]: Toolchain (without parser) took 795709.09ms. Allocated memory was 125.8MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 87.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2025-04-14 01:26:47,957 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:26:47,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.42ms. Allocated memory is still 125.8MB. Free memory was 87.7MB in the beginning and 71.9MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-14 01:26:47,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.61ms. Allocated memory is still 125.8MB. Free memory was 71.9MB in the beginning and 69.3MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:26:47,958 INFO L158 Benchmark]: Boogie Preprocessor took 44.89ms. Allocated memory is still 125.8MB. Free memory was 69.3MB in the beginning and 66.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:26:47,958 INFO L158 Benchmark]: IcfgBuilder took 801.46ms. Allocated memory is still 125.8MB. Free memory was 66.9MB in the beginning and 28.6MB in the end (delta: 38.2MB). Peak memory consumption was 52.8MB. Max. memory is 8.0GB. [2025-04-14 01:26:47,958 INFO L158 Benchmark]: TraceAbstraction took 794623.58ms. Allocated memory was 125.8MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 28.4MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2025-04-14 01:26:47,960 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.42ms. Allocated memory is still 125.8MB. Free memory was 87.7MB in the beginning and 71.9MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.61ms. Allocated memory is still 125.8MB. Free memory was 71.9MB in the beginning and 69.3MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 44.89ms. Allocated memory is still 125.8MB. Free memory was 69.3MB in the beginning and 66.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 801.46ms. Allocated memory is still 125.8MB. Free memory was 66.9MB in the beginning and 28.6MB in the end (delta: 38.2MB). Peak memory consumption was 52.8MB. Max. memory is 8.0GB. * TraceAbstraction took 794623.58ms. Allocated memory was 125.8MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 28.4MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (36states, 3/34 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 295391 conditions, 15927 events (10852/15926 cut-off events. For 1258858/1258858 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 110093 event pairs, 429 based on Foata normal form. 0/17029 useless extension candidates. Maximal degree in co-relation 295046. Up to 9518 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (36states, 3/34 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 295391 conditions, 15927 events (10852/15926 cut-off events. For 1258858/1258858 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 110093 event pairs, 429 based on Foata normal form. 0/17029 useless extension candidates. Maximal degree in co-relation 295046. Up to 9518 conditions per place.). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (36states, 3/34 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 295391 conditions, 15927 events (10852/15926 cut-off events. For 1258858/1258858 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 110093 event pairs, 429 based on Foata normal form. 0/17029 useless extension candidates. Maximal degree in co-relation 295046. Up to 9518 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (36states, 3/34 universal loopers) in iteration 62,while PetriNetUnfolder was constructing finite prefix that currently has 295391 conditions, 15927 events (10852/15926 cut-off events. For 1258858/1258858 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 110093 event pairs, 429 based on Foata normal form. 0/17029 useless extension candidates. Maximal degree in co-relation 295046. Up to 9518 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 42 locations, 55 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 794.5s, OverallIterations: 62, TraceHistogramMax: 2, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 742.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9295 SdHoareTripleChecker+Valid, 30.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9295 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 26.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2079 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64689 IncrementalHoareTripleChecker+Invalid, 66768 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2079 mSolverCounterUnsat, 0 mSDtfsCounter, 64689 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3332 GetRequests, 1225 SyntacticMatches, 15 SemanticMatches, 2092 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44723 ImplicationChecksByTransitivity, 47.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197153occurred in iteration=61, InterpolantAutomatonStates: 1354, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 40.4s InterpolantComputationTime, 2420 NumberOfCodeBlocks, 2366 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 3232 ConstructedInterpolants, 80 QuantifiedInterpolants, 50262 SizeOfPredicates, 534 NumberOfNonLiveVariables, 9545 ConjunctsInSsa, 1487 ConjunctsInUnsatCore, 138 InterpolantComputations, 44 PerfectInterpolantSequences, 371/659 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown