/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/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:55:17,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:55:17,187 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 00:55:17,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:55:17,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:55:17,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:55:17,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:55:17,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:55:17,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:55:17,218 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:55:17,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:55:17,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:55:17,219 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:55:17,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:55:17,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:55:17,220 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:55:17,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:55:17,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:55:17,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:55:17,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:55:17,221 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 00:55:17,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:55:17,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:55:17,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:55:17,450 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:55:17,452 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:55:17,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2025-04-14 00:55:18,729 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46f364b1/cf0f44539e374c64b16a370f177b3256/FLAGe75fff320 [2025-04-14 00:55:18,935 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:55:18,935 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2025-04-14 00:55:18,940 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46f364b1/cf0f44539e374c64b16a370f177b3256/FLAGe75fff320 [2025-04-14 00:55:19,780 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46f364b1/cf0f44539e374c64b16a370f177b3256 [2025-04-14 00:55:19,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:55:19,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:55:19,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:55:19,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:55:19,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:55:19,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:55:19" (1/1) ... [2025-04-14 00:55:19,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc0b36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:19, skipping insertion in model container [2025-04-14 00:55:19,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:55:19" (1/1) ... [2025-04-14 00:55:19,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:55:19,986 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/parallel-parallel-sum-2.wvr.c[4303,4316] [2025-04-14 00:55:19,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:55:20,008 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:55:20,045 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/parallel-parallel-sum-2.wvr.c[4303,4316] [2025-04-14 00:55:20,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:55:20,066 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:55:20,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20 WrapperNode [2025-04-14 00:55:20,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:55:20,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:55:20,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:55:20,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:55:20,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,103 INFO L138 Inliner]: procedures = 28, calls = 58, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 370 [2025-04-14 00:55:20,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:55:20,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:55:20,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:55:20,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:55:20,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,135 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-14 00:55:20,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,145 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:55:20,157 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:55:20,157 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:55:20,157 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:55:20,158 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (1/1) ... [2025-04-14 00:55:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:55:20,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:55:20,181 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 00:55:20,183 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 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:55:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:55:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:55:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 00:55:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 00:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-14 00:55:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-14 00:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-14 00:55:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-14 00:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 00:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:55:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:55:20,201 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 00:55:20,283 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:55:20,284 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:55:20,668 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:55:20,669 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:55:20,669 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:55:21,033 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:55:21,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:55:21 BoogieIcfgContainer [2025-04-14 00:55:21,034 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:55:21,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:55:21,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:55:21,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:55:21,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:55:19" (1/3) ... [2025-04-14 00:55:21,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250712f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:55:21, skipping insertion in model container [2025-04-14 00:55:21,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:55:20" (2/3) ... [2025-04-14 00:55:21,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250712f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:55:21, skipping insertion in model container [2025-04-14 00:55:21,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:55:21" (3/3) ... [2025-04-14 00:55:21,039 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2025-04-14 00:55:21,050 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:55:21,051 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-2.wvr.c that has 7 procedures, 53 locations, 51 edges, 1 initial locations, 5 loop locations, and 1 error locations. [2025-04-14 00:55:21,051 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:55:21,134 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-04-14 00:55:21,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 71 transitions, 208 flow [2025-04-14 00:55:21,185 INFO L116 PetriNetUnfolderBase]: 9/55 cut-off events. [2025-04-14 00:55:21,188 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-14 00:55:21,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 55 events. 9/55 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 115 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2025-04-14 00:55:21,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 71 transitions, 208 flow [2025-04-14 00:55:21,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 54 transitions, 156 flow [2025-04-14 00:55:21,203 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:55:21,215 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;@4a322745, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:55:21,215 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-14 00:55:21,237 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:55:21,237 INFO L116 PetriNetUnfolderBase]: 9/53 cut-off events. [2025-04-14 00:55:21,237 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-14 00:55:21,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:21,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:21,238 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:55:21,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1157863553, now seen corresponding path program 1 times [2025-04-14 00:55:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:21,248 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008092851] [2025-04-14 00:55:21,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:55:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:21,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-14 00:55:21,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-14 00:55:21,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:55:21,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:21,777 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 00:55:21,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:21,777 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008092851] [2025-04-14 00:55:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008092851] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:55:21,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:55:21,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:55:21,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716962567] [2025-04-14 00:55:21,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:55:21,783 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:55:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:21,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:55:21,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:55:21,801 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:55:21,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 00:55:21,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:21,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:55:21,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:55:25,937 INFO L116 PetriNetUnfolderBase]: 64293/78953 cut-off events. [2025-04-14 00:55:25,938 INFO L117 PetriNetUnfolderBase]: For 8595/8595 co-relation queries the response was YES. [2025-04-14 00:55:26,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168122 conditions, 78953 events. 64293/78953 cut-off events. For 8595/8595 co-relation queries the response was YES. Maximal size of possible extension queue 2537. Compared 387173 event pairs, 46139 based on Foata normal form. 2216/60889 useless extension candidates. Maximal degree in co-relation 122715. Up to 58059 conditions per place. [2025-04-14 00:55:26,308 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 49 selfloop transitions, 2 changer transitions 38/93 dead transitions. [2025-04-14 00:55:26,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 93 transitions, 454 flow [2025-04-14 00:55:26,309 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:55:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:55:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-04-14 00:55:26,318 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44 [2025-04-14 00:55:26,320 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 156 flow. Second operand 4 states and 132 transitions. [2025-04-14 00:55:26,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 93 transitions, 454 flow [2025-04-14 00:55:26,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 93 transitions, 394 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-14 00:55:26,394 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 142 flow [2025-04-14 00:55:26,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2025-04-14 00:55:26,398 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2025-04-14 00:55:26,399 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 142 flow [2025-04-14 00:55:26,399 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 00:55:26,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:26,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:26,399 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:55:26,399 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:55:26,400 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1411045871, now seen corresponding path program 1 times [2025-04-14 00:55:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:26,400 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190625] [2025-04-14 00:55:26,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:55:26,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:26,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-14 00:55:26,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-14 00:55:26,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:55:26,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 00:55:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:26,702 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190625] [2025-04-14 00:55:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190625] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:55:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:55:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:55:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532023820] [2025-04-14 00:55:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:55:26,703 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:55:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:26,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:55:26,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:55:26,703 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:55:26,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:55:26,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:26,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:55:26,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:55:31,703 INFO L116 PetriNetUnfolderBase]: 97666/119585 cut-off events. [2025-04-14 00:55:31,703 INFO L117 PetriNetUnfolderBase]: For 8418/8418 co-relation queries the response was YES. [2025-04-14 00:55:31,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250259 conditions, 119585 events. 97666/119585 cut-off events. For 8418/8418 co-relation queries the response was YES. Maximal size of possible extension queue 3757. Compared 609119 event pairs, 17365 based on Foata normal form. 1/92372 useless extension candidates. Maximal degree in co-relation 250247. Up to 49180 conditions per place. [2025-04-14 00:55:32,277 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 148 selfloop transitions, 10 changer transitions 9/171 dead transitions. [2025-04-14 00:55:32,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 171 transitions, 757 flow [2025-04-14 00:55:32,278 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:55:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:55:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2025-04-14 00:55:32,279 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2025-04-14 00:55:32,279 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 142 flow. Second operand 6 states and 227 transitions. [2025-04-14 00:55:32,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 171 transitions, 757 flow [2025-04-14 00:55:32,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 171 transitions, 747 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-04-14 00:55:32,346 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 197 flow [2025-04-14 00:55:32,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2025-04-14 00:55:32,346 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2025-04-14 00:55:32,346 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 197 flow [2025-04-14 00:55:32,346 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:55:32,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:32,347 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:32,347 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:55:32,347 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:55:32,347 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1605724329, now seen corresponding path program 2 times [2025-04-14 00:55:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:32,347 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904073667] [2025-04-14 00:55:32,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:55:32,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:32,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-04-14 00:55:32,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 38 statements. [2025-04-14 00:55:32,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:55:32,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 00:55:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:32,600 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904073667] [2025-04-14 00:55:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904073667] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:55:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:55:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:55:32,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849554011] [2025-04-14 00:55:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:55:32,600 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:55:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:32,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:55:32,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:55:32,601 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:55:32,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:55:32,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:32,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:55:32,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:55:37,809 INFO L116 PetriNetUnfolderBase]: 97656/119563 cut-off events. [2025-04-14 00:55:37,810 INFO L117 PetriNetUnfolderBase]: For 20712/20712 co-relation queries the response was YES. [2025-04-14 00:55:38,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272332 conditions, 119563 events. 97656/119563 cut-off events. For 20712/20712 co-relation queries the response was YES. Maximal size of possible extension queue 3763. Compared 608648 event pairs, 17636 based on Foata normal form. 1/92351 useless extension candidates. Maximal degree in co-relation 272318. Up to 49180 conditions per place. [2025-04-14 00:55:38,622 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 143 selfloop transitions, 12 changer transitions 9/168 dead transitions. [2025-04-14 00:55:38,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 168 transitions, 808 flow [2025-04-14 00:55:38,622 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:55:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:55:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2025-04-14 00:55:38,625 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2025-04-14 00:55:38,625 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 197 flow. Second operand 6 states and 222 transitions. [2025-04-14 00:55:38,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 168 transitions, 808 flow [2025-04-14 00:55:38,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 168 transitions, 804 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 00:55:38,675 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 250 flow [2025-04-14 00:55:38,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2025-04-14 00:55:38,676 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2025-04-14 00:55:38,676 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 250 flow [2025-04-14 00:55:38,676 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:55:38,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:38,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:38,676 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:55:38,676 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:55:38,676 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1766578494, now seen corresponding path program 1 times [2025-04-14 00:55:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:38,677 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167056249] [2025-04-14 00:55:38,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:55:38,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:38,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-14 00:55:38,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-14 00:55:38,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:55:38,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:38,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167056249] [2025-04-14 00:55:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167056249] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:55:38,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818136343] [2025-04-14 00:55:38,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:55:38,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:55:38,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:55:38,852 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 00:55:38,852 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 00:55:38,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-14 00:55:38,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-14 00:55:38,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:55:38,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:38,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 00:55:38,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:55:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:39,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:55:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:39,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818136343] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:55:39,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:55:39,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-04-14 00:55:39,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662982825] [2025-04-14 00:55:39,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:55:39,139 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 00:55:39,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:39,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 00:55:39,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 00:55:39,139 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:55:39,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 250 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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 00:55:39,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:39,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:55:39,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:55:47,080 INFO L116 PetriNetUnfolderBase]: 133870/165888 cut-off events. [2025-04-14 00:55:47,080 INFO L117 PetriNetUnfolderBase]: For 40681/40681 co-relation queries the response was YES. [2025-04-14 00:55:47,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386875 conditions, 165888 events. 133870/165888 cut-off events. For 40681/40681 co-relation queries the response was YES. Maximal size of possible extension queue 5242. Compared 910165 event pairs, 98318 based on Foata normal form. 4440/132045 useless extension candidates. Maximal degree in co-relation 386852. Up to 114771 conditions per place. [2025-04-14 00:55:47,930 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 132 selfloop transitions, 5 changer transitions 4/145 dead transitions. [2025-04-14 00:55:47,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 145 transitions, 809 flow [2025-04-14 00:55:47,931 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:55:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:55:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2025-04-14 00:55:47,932 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4022222222222222 [2025-04-14 00:55:47,932 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 250 flow. Second operand 6 states and 181 transitions. [2025-04-14 00:55:47,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 145 transitions, 809 flow [2025-04-14 00:55:48,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 145 transitions, 781 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-04-14 00:55:48,220 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 277 flow [2025-04-14 00:55:48,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2025-04-14 00:55:48,221 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2025-04-14 00:55:48,221 INFO L485 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 277 flow [2025-04-14 00:55:48,221 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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 00:55:48,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:48,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:48,227 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 00:55:48,422 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 00:55:48,422 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:55:48,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:48,422 INFO L85 PathProgramCache]: Analyzing trace with hash 533393534, now seen corresponding path program 1 times [2025-04-14 00:55:48,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:48,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149482201] [2025-04-14 00:55:48,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:55:48,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:48,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-14 00:55:48,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-14 00:55:48,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:55:48,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:48,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:48,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149482201] [2025-04-14 00:55:48,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149482201] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:55:48,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323567162] [2025-04-14 00:55:48,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:55:48,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:55:48,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:55:48,594 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 00:55:48,595 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 00:55:48,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-14 00:55:48,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-14 00:55:48,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:55:48,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:48,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 00:55:48,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:55:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:48,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:55:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:48,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323567162] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:55:48,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:55:48,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-04-14 00:55:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707843646] [2025-04-14 00:55:48,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:55:48,862 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 00:55:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:48,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 00:55:48,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-14 00:55:48,863 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:55:48,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 277 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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 00:55:48,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:48,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:55:48,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:55:55,000 INFO L116 PetriNetUnfolderBase]: 104375/128751 cut-off events. [2025-04-14 00:55:55,000 INFO L117 PetriNetUnfolderBase]: For 40561/40561 co-relation queries the response was YES. [2025-04-14 00:55:55,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303950 conditions, 128751 events. 104375/128751 cut-off events. For 40561/40561 co-relation queries the response was YES. Maximal size of possible extension queue 3880. Compared 675218 event pairs, 73818 based on Foata normal form. 1005/99972 useless extension candidates. Maximal degree in co-relation 297088. Up to 114588 conditions per place. [2025-04-14 00:55:55,858 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 83 selfloop transitions, 4 changer transitions 39/130 dead transitions. [2025-04-14 00:55:55,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 718 flow [2025-04-14 00:55:55,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:55:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:55:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2025-04-14 00:55:55,859 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2025-04-14 00:55:55,859 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 277 flow. Second operand 6 states and 174 transitions. [2025-04-14 00:55:55,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 718 flow [2025-04-14 00:55:56,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 130 transitions, 702 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-04-14 00:55:56,187 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 262 flow [2025-04-14 00:55:56,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2025-04-14 00:55:56,187 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2025-04-14 00:55:56,188 INFO L485 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 262 flow [2025-04-14 00:55:56,188 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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 00:55:56,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:56,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:56,194 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 00:55:56,388 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:55:56,389 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:55:56,389 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash -38318262, now seen corresponding path program 2 times [2025-04-14 00:55:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:56,389 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055145272] [2025-04-14 00:55:56,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:55:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:56,398 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-14 00:55:56,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 40 of 42 statements. [2025-04-14 00:55:56,408 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:55:56,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:55:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:56,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055145272] [2025-04-14 00:55:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055145272] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:55:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:55:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:55:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306330390] [2025-04-14 00:55:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:55:56,477 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:55:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:56,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:55:56,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:55:56,478 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:55:56,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:55:56,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:56,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:55:56,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:02,331 INFO L116 PetriNetUnfolderBase]: 106994/131203 cut-off events. [2025-04-14 00:56:02,331 INFO L117 PetriNetUnfolderBase]: For 32502/32502 co-relation queries the response was YES. [2025-04-14 00:56:02,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312610 conditions, 131203 events. 106994/131203 cut-off events. For 32502/32502 co-relation queries the response was YES. Maximal size of possible extension queue 4221. Compared 677984 event pairs, 10933 based on Foata normal form. 165/101630 useless extension candidates. Maximal degree in co-relation 312573. Up to 94047 conditions per place. [2025-04-14 00:56:03,069 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 133 selfloop transitions, 7 changer transitions 2/146 dead transitions. [2025-04-14 00:56:03,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 146 transitions, 786 flow [2025-04-14 00:56:03,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:56:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:56:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-04-14 00:56:03,070 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.56 [2025-04-14 00:56:03,070 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 262 flow. Second operand 4 states and 168 transitions. [2025-04-14 00:56:03,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 146 transitions, 786 flow [2025-04-14 00:56:03,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 146 transitions, 768 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-04-14 00:56:03,209 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 306 flow [2025-04-14 00:56:03,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2025-04-14 00:56:03,209 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2025-04-14 00:56:03,210 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 306 flow [2025-04-14 00:56:03,210 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:56:03,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:03,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:03,210 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 00:56:03,210 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:56:03,210 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1025899264, now seen corresponding path program 2 times [2025-04-14 00:56:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:03,211 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058272859] [2025-04-14 00:56:03,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:56:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:03,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-04-14 00:56:03,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 40 of 42 statements. [2025-04-14 00:56:03,224 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:56:03,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:56:03,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:03,272 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058272859] [2025-04-14 00:56:03,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058272859] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:56:03,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:56:03,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:56:03,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817148856] [2025-04-14 00:56:03,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:03,272 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:56:03,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:03,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:56:03,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:56:03,273 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:56:03,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:56:03,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:03,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:56:03,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:10,936 INFO L116 PetriNetUnfolderBase]: 129630/159634 cut-off events. [2025-04-14 00:56:10,936 INFO L117 PetriNetUnfolderBase]: For 77467/77467 co-relation queries the response was YES. [2025-04-14 00:56:11,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405825 conditions, 159634 events. 129630/159634 cut-off events. For 77467/77467 co-relation queries the response was YES. Maximal size of possible extension queue 5036. Compared 846591 event pairs, 34374 based on Foata normal form. 399/124187 useless extension candidates. Maximal degree in co-relation 405791. Up to 106351 conditions per place. [2025-04-14 00:56:12,040 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 161 selfloop transitions, 11 changer transitions 6/182 dead transitions. [2025-04-14 00:56:12,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 182 transitions, 1028 flow [2025-04-14 00:56:12,041 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:56:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:56:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 201 transitions. [2025-04-14 00:56:12,041 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.536 [2025-04-14 00:56:12,041 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 306 flow. Second operand 5 states and 201 transitions. [2025-04-14 00:56:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 182 transitions, 1028 flow [2025-04-14 00:56:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 182 transitions, 988 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-04-14 00:56:13,343 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 394 flow [2025-04-14 00:56:13,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2025-04-14 00:56:13,344 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2025-04-14 00:56:13,344 INFO L485 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 394 flow [2025-04-14 00:56:13,344 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:56:13,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:13,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:13,344 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 00:56:13,344 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:56:13,344 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1839536787, now seen corresponding path program 1 times [2025-04-14 00:56:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:13,345 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918077822] [2025-04-14 00:56:13,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:13,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-14 00:56:13,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 00:56:13,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:13,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:13,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:13,504 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918077822] [2025-04-14 00:56:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918077822] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:13,504 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914885097] [2025-04-14 00:56:13,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:13,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:56:13,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:56:13,507 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 00:56:13,508 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 00:56:13,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-14 00:56:13,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 00:56:13,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:13,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:13,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 00:56:13,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:56:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:13,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:56:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:13,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914885097] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:13,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:56:13,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2025-04-14 00:56:13,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902803113] [2025-04-14 00:56:13,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:13,840 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:56:13,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:13,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:56:13,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:56:13,840 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:56:13,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 00:56:13,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:13,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:56:13,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:21,416 INFO L116 PetriNetUnfolderBase]: 127827/157136 cut-off events. [2025-04-14 00:56:21,416 INFO L117 PetriNetUnfolderBase]: For 92811/92811 co-relation queries the response was YES. [2025-04-14 00:56:21,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409698 conditions, 157136 events. 127827/157136 cut-off events. For 92811/92811 co-relation queries the response was YES. Maximal size of possible extension queue 4957. Compared 827659 event pairs, 21588 based on Foata normal form. 296/122004 useless extension candidates. Maximal degree in co-relation 409661. Up to 67148 conditions per place. [2025-04-14 00:56:22,312 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 166 selfloop transitions, 20 changer transitions 4/194 dead transitions. [2025-04-14 00:56:22,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 194 transitions, 1160 flow [2025-04-14 00:56:22,313 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:56:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:56:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2025-04-14 00:56:22,313 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2025-04-14 00:56:22,313 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 394 flow. Second operand 7 states and 234 transitions. [2025-04-14 00:56:22,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 194 transitions, 1160 flow [2025-04-14 00:56:24,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 194 transitions, 1115 flow, removed 16 selfloop flow, removed 3 redundant places. [2025-04-14 00:56:24,542 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 461 flow [2025-04-14 00:56:24,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=461, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2025-04-14 00:56:24,543 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2025-04-14 00:56:24,543 INFO L485 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 461 flow [2025-04-14 00:56:24,543 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 00:56:24,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:24,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:24,549 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 00:56:24,743 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 00:56:24,744 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:56:24,744 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1286311804, now seen corresponding path program 1 times [2025-04-14 00:56:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:24,744 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115547115] [2025-04-14 00:56:24,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:24,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:24,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-14 00:56:24,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 00:56:24,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:24,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:24,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:24,891 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115547115] [2025-04-14 00:56:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115547115] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:24,891 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330109934] [2025-04-14 00:56:24,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:24,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:56:24,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:56:24,893 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 00:56:24,895 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 00:56:24,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-14 00:56:24,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 00:56:24,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:24,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:24,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 00:56:24,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:56:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:25,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:56:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330109934] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:56:25,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2025-04-14 00:56:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103562745] [2025-04-14 00:56:25,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:25,183 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:56:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:25,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:56:25,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:56:25,183 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:56:25,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 00:56:25,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:25,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:56:25,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:32,461 INFO L116 PetriNetUnfolderBase]: 125943/154623 cut-off events. [2025-04-14 00:56:32,461 INFO L117 PetriNetUnfolderBase]: For 153475/153475 co-relation queries the response was YES. [2025-04-14 00:56:33,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424264 conditions, 154623 events. 125943/154623 cut-off events. For 153475/153475 co-relation queries the response was YES. Maximal size of possible extension queue 4904. Compared 813571 event pairs, 23944 based on Foata normal form. 60/119579 useless extension candidates. Maximal degree in co-relation 424223. Up to 65364 conditions per place. [2025-04-14 00:56:33,472 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 143 selfloop transitions, 12 changer transitions 2/161 dead transitions. [2025-04-14 00:56:33,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 161 transitions, 1037 flow [2025-04-14 00:56:33,473 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:56:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:56:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2025-04-14 00:56:33,473 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2025-04-14 00:56:33,473 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 461 flow. Second operand 6 states and 190 transitions. [2025-04-14 00:56:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 161 transitions, 1037 flow [2025-04-14 00:56:34,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 161 transitions, 978 flow, removed 20 selfloop flow, removed 4 redundant places. [2025-04-14 00:56:34,942 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 408 flow [2025-04-14 00:56:34,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2025-04-14 00:56:34,943 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2025-04-14 00:56:34,943 INFO L485 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 408 flow [2025-04-14 00:56:34,943 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 00:56:34,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:34,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:34,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-14 00:56:35,143 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:56:35,144 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:56:35,144 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash -753808154, now seen corresponding path program 1 times [2025-04-14 00:56:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:35,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354703827] [2025-04-14 00:56:35,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:35,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:35,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-14 00:56:35,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-14 00:56:35,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:35,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:36,105 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354703827] [2025-04-14 00:56:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354703827] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:36,105 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237133026] [2025-04-14 00:56:36,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:36,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:56:36,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:56:36,107 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 00:56:36,109 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 00:56:36,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-14 00:56:36,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-14 00:56:36,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:36,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:36,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-14 00:56:36,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:56:36,270 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 00:56:36,625 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-04-14 00:56:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:36,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:56:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:56:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237133026] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:36,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:56:36,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 10] total 26 [2025-04-14 00:56:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120884402] [2025-04-14 00:56:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:36,828 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 00:56:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:36,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 00:56:36,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2025-04-14 00:56:36,829 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:56:36,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 408 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 00:56:36,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:36,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:56:36,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:45,482 INFO L116 PetriNetUnfolderBase]: 139514/171567 cut-off events. [2025-04-14 00:56:45,482 INFO L117 PetriNetUnfolderBase]: For 142078/142078 co-relation queries the response was YES. [2025-04-14 00:56:46,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464827 conditions, 171567 events. 139514/171567 cut-off events. For 142078/142078 co-relation queries the response was YES. Maximal size of possible extension queue 5655. Compared 920829 event pairs, 12846 based on Foata normal form. 1/133023 useless extension candidates. Maximal degree in co-relation 464784. Up to 146765 conditions per place. [2025-04-14 00:56:46,663 INFO L140 encePairwiseOnDemand]: 63/75 looper letters, 184 selfloop transitions, 20 changer transitions 19/227 dead transitions. [2025-04-14 00:56:46,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 227 transitions, 1307 flow [2025-04-14 00:56:46,663 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 00:56:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 00:56:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 291 transitions. [2025-04-14 00:56:46,664 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2025-04-14 00:56:46,664 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 408 flow. Second operand 9 states and 291 transitions. [2025-04-14 00:56:46,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 227 transitions, 1307 flow [2025-04-14 00:56:48,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 227 transitions, 1286 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-14 00:56:48,641 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 557 flow [2025-04-14 00:56:48,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2025-04-14 00:56:48,641 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2025-04-14 00:56:48,642 INFO L485 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 557 flow [2025-04-14 00:56:48,642 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 00:56:48,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:48,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:48,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-14 00:56:48,842 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,SelfDestructingSolverStorable9 [2025-04-14 00:56:48,842 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:56:48,843 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:48,843 INFO L85 PathProgramCache]: Analyzing trace with hash 603307151, now seen corresponding path program 1 times [2025-04-14 00:56:48,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:48,843 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064623901] [2025-04-14 00:56:48,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:48,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-14 00:56:48,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-14 00:56:48,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:48,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:49,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:49,672 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064623901] [2025-04-14 00:56:49,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064623901] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:49,673 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037449838] [2025-04-14 00:56:49,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:49,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:56:49,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:56:49,675 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 00:56:49,676 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 00:56:49,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-14 00:56:49,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-14 00:56:49,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:49,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:49,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-14 00:56:49,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:56:49,815 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 00:56:50,090 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-04-14 00:56:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:50,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:56:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:56:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037449838] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:50,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:56:50,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 24 [2025-04-14 00:56:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763989474] [2025-04-14 00:56:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:50,310 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 00:56:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:50,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 00:56:50,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2025-04-14 00:56:50,311 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:56:50,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 557 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 00:56:50,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:50,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:56:50,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:57:02,752 INFO L116 PetriNetUnfolderBase]: 173220/213337 cut-off events. [2025-04-14 00:57:02,752 INFO L117 PetriNetUnfolderBase]: For 215491/215491 co-relation queries the response was YES. [2025-04-14 00:57:03,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606113 conditions, 213337 events. 173220/213337 cut-off events. For 215491/215491 co-relation queries the response was YES. Maximal size of possible extension queue 6977. Compared 1174134 event pairs, 13209 based on Foata normal form. 2/166528 useless extension candidates. Maximal degree in co-relation 606073. Up to 156322 conditions per place. [2025-04-14 00:57:04,289 INFO L140 encePairwiseOnDemand]: 63/75 looper letters, 236 selfloop transitions, 33 changer transitions 17/290 dead transitions. [2025-04-14 00:57:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 290 transitions, 1825 flow [2025-04-14 00:57:04,289 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 00:57:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 00:57:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 329 transitions. [2025-04-14 00:57:04,290 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4874074074074074 [2025-04-14 00:57:04,290 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 557 flow. Second operand 9 states and 329 transitions. [2025-04-14 00:57:04,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 290 transitions, 1825 flow [2025-04-14 00:57:07,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 290 transitions, 1804 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-04-14 00:57:07,514 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 802 flow [2025-04-14 00:57:07,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=802, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2025-04-14 00:57:07,514 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 40 predicate places. [2025-04-14 00:57:07,514 INFO L485 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 802 flow [2025-04-14 00:57:07,515 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 00:57:07,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:07,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:57:07,521 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 00:57:07,715 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:57:07,715 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:57:07,716 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash -509727995, now seen corresponding path program 2 times [2025-04-14 00:57:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:07,716 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077348199] [2025-04-14 00:57:07,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:57:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:07,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-04-14 00:57:07,740 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 43 of 45 statements. [2025-04-14 00:57:07,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:57:07,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:57:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:08,018 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077348199] [2025-04-14 00:57:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077348199] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:57:08,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:57:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-14 00:57:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244453733] [2025-04-14 00:57:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:57:08,018 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 00:57:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:08,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 00:57:08,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-14 00:57:08,019 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:57:08,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 802 flow. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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 00:57:08,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:08,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:57:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:57:21,622 INFO L116 PetriNetUnfolderBase]: 182324/224616 cut-off events. [2025-04-14 00:57:21,622 INFO L117 PetriNetUnfolderBase]: For 310591/310591 co-relation queries the response was YES. [2025-04-14 00:57:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685443 conditions, 224616 events. 182324/224616 cut-off events. For 310591/310591 co-relation queries the response was YES. Maximal size of possible extension queue 7163. Compared 1237475 event pairs, 10009 based on Foata normal form. 2/176158 useless extension candidates. Maximal degree in co-relation 685401. Up to 85884 conditions per place. [2025-04-14 00:57:23,409 INFO L140 encePairwiseOnDemand]: 62/75 looper letters, 312 selfloop transitions, 47 changer transitions 22/385 dead transitions. [2025-04-14 00:57:23,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 385 transitions, 2670 flow [2025-04-14 00:57:23,409 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 00:57:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 00:57:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 418 transitions. [2025-04-14 00:57:23,410 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2025-04-14 00:57:23,410 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 802 flow. Second operand 11 states and 418 transitions. [2025-04-14 00:57:23,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 385 transitions, 2670 flow [2025-04-14 00:57:32,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 385 transitions, 2583 flow, removed 41 selfloop flow, removed 2 redundant places. [2025-04-14 00:57:32,044 INFO L231 Difference]: Finished difference. Result has 118 places, 144 transitions, 1152 flow [2025-04-14 00:57:32,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1152, PETRI_PLACES=118, PETRI_TRANSITIONS=144} [2025-04-14 00:57:32,045 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 54 predicate places. [2025-04-14 00:57:32,045 INFO L485 AbstractCegarLoop]: Abstraction has has 118 places, 144 transitions, 1152 flow [2025-04-14 00:57:32,045 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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 00:57:32,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:32,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:57:32,045 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-14 00:57:32,045 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:57:32,046 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1394215147, now seen corresponding path program 3 times [2025-04-14 00:57:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:32,046 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979046771] [2025-04-14 00:57:32,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:57:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:32,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 2 equivalence classes. [2025-04-14 00:57:32,061 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 43 of 45 statements. [2025-04-14 00:57:32,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 00:57:32,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:57:32,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:32,266 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979046771] [2025-04-14 00:57:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979046771] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:57:32,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:57:32,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-14 00:57:32,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906835153] [2025-04-14 00:57:32,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:57:32,266 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 00:57:32,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:32,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 00:57:32,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-04-14 00:57:32,266 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:57:32,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 144 transitions, 1152 flow. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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 00:57:32,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:32,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:57:32,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:57:46,197 INFO L116 PetriNetUnfolderBase]: 182787/225256 cut-off events. [2025-04-14 00:57:46,197 INFO L117 PetriNetUnfolderBase]: For 438497/438497 co-relation queries the response was YES. [2025-04-14 00:57:47,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738704 conditions, 225256 events. 182787/225256 cut-off events. For 438497/438497 co-relation queries the response was YES. Maximal size of possible extension queue 7163. Compared 1237400 event pairs, 13433 based on Foata normal form. 1/176697 useless extension candidates. Maximal degree in co-relation 738655. Up to 105306 conditions per place. [2025-04-14 00:57:48,468 INFO L140 encePairwiseOnDemand]: 62/75 looper letters, 266 selfloop transitions, 37 changer transitions 18/325 dead transitions. [2025-04-14 00:57:48,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 325 transitions, 2465 flow [2025-04-14 00:57:48,469 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 00:57:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 00:57:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2025-04-14 00:57:48,470 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4573333333333333 [2025-04-14 00:57:48,470 INFO L175 Difference]: Start difference. First operand has 118 places, 144 transitions, 1152 flow. Second operand 10 states and 343 transitions. [2025-04-14 00:57:48,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 325 transitions, 2465 flow [2025-04-14 00:57:59,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 325 transitions, 2400 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-04-14 00:57:59,062 INFO L231 Difference]: Finished difference. Result has 126 places, 149 transitions, 1227 flow [2025-04-14 00:57:59,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1227, PETRI_PLACES=126, PETRI_TRANSITIONS=149} [2025-04-14 00:57:59,063 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 62 predicate places. [2025-04-14 00:57:59,063 INFO L485 AbstractCegarLoop]: Abstraction has has 126 places, 149 transitions, 1227 flow [2025-04-14 00:57:59,063 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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 00:57:59,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:59,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:57:59,063 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-14 00:57:59,063 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:57:59,063 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:59,064 INFO L85 PathProgramCache]: Analyzing trace with hash -752632001, now seen corresponding path program 4 times [2025-04-14 00:57:59,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:59,064 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60913946] [2025-04-14 00:57:59,064 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:57:59,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:59,071 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-14 00:57:59,080 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-14 00:57:59,081 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:57:59,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 00:57:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:59,422 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60913946] [2025-04-14 00:57:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60913946] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:57:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:57:59,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 00:57:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413050601] [2025-04-14 00:57:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:57:59,422 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 00:57:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:59,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 00:57:59,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-04-14 00:57:59,423 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 75 [2025-04-14 00:57:59,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 149 transitions, 1227 flow. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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 00:57:59,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:59,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 75 [2025-04-14 00:57:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand