./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:32:29,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:32:30,037 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:32:30,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:32:30,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:32:30,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:32:30,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:32:30,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:32:30,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:32:30,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:32:30,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:32:30,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:32:30,058 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:32:30,059 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:32:30,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:32:30,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:32:30,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:32:30,060 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2025-03-17 06:32:30,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:32:30,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:32:30,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:32:30,316 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:32:30,316 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:32:30,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-03-17 06:32:31,467 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96bc0156f/7c5e0ac433794f6295faa83093151bc4/FLAG5e3dbba66 [2025-03-17 06:32:31,745 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:32:31,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-03-17 06:32:31,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96bc0156f/7c5e0ac433794f6295faa83093151bc4/FLAG5e3dbba66 [2025-03-17 06:32:32,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96bc0156f/7c5e0ac433794f6295faa83093151bc4 [2025-03-17 06:32:32,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:32:32,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:32:32,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:32:32,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:32:32,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:32:32,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9876686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32, skipping insertion in model container [2025-03-17 06:32:32,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:32:32,211 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2025-03-17 06:32:32,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:32:32,375 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:32:32,383 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2025-03-17 06:32:32,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:32:32,427 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:32:32,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32 WrapperNode [2025-03-17 06:32:32,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:32:32,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:32:32,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:32:32,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:32:32,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,452 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 112 [2025-03-17 06:32:32,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:32:32,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:32:32,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:32:32,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:32:32,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,469 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2025-03-17 06:32:32,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,474 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:32:32,478 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:32:32,478 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:32:32,478 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:32:32,478 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (1/1) ... [2025-03-17 06:32:32,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:32:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:32:32,501 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) [2025-03-17 06:32:32,503 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 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2025-03-17 06:32:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 06:32:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:32:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:32:32,519 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:32:32,621 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:32:32,622 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:32:32,828 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:32:32,828 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:32:32,952 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:32:32,953 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:32:32,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:32:32 BoogieIcfgContainer [2025-03-17 06:32:32,953 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:32:32,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:32:32,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:32:32,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:32:32,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:32:32" (1/3) ... [2025-03-17 06:32:32,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dff949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:32:32, skipping insertion in model container [2025-03-17 06:32:32,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:32:32" (2/3) ... [2025-03-17 06:32:32,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dff949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:32:32, skipping insertion in model container [2025-03-17 06:32:32,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:32:32" (3/3) ... [2025-03-17 06:32:32,961 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-03-17 06:32:32,971 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:32:32,973 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-03-17 06:32:32,973 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:32:33,011 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:32:33,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2025-03-17 06:32:33,060 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2025-03-17 06:32:33,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:32:33,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2025-03-17 06:32:33,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2025-03-17 06:32:33,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2025-03-17 06:32:33,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:32:33,090 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b275366, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:32:33,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 06:32:33,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:32:33,101 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2025-03-17 06:32:33,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:32:33,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:33,102 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:33,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:33,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -520901159, now seen corresponding path program 1 times [2025-03-17 06:32:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:33,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954219515] [2025-03-17 06:32:33,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:32:33,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:33,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 06:32:33,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 06:32:33,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:33,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:33,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954219515] [2025-03-17 06:32:33,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954219515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:33,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:33,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:32:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273274367] [2025-03-17 06:32:33,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:33,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:32:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:33,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:32:33,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:32:33,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-03-17 06:32:33,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:32:33,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:33,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-03-17 06:32:33,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:33,749 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2025-03-17 06:32:33,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:32:33,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 450 events. 218/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1943 event pairs, 20 based on Foata normal form. 37/407 useless extension candidates. Maximal degree in co-relation 851. Up to 241 conditions per place. [2025-03-17 06:32:33,760 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2025-03-17 06:32:33,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 265 flow [2025-03-17 06:32:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:32:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:32:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2025-03-17 06:32:33,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2025-03-17 06:32:33,772 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 6 states and 119 transitions. [2025-03-17 06:32:33,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 265 flow [2025-03-17 06:32:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:32:33,778 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 168 flow [2025-03-17 06:32:33,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2025-03-17 06:32:33,781 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-03-17 06:32:33,781 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 168 flow [2025-03-17 06:32:33,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:32:33,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:33,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:33,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:32:33,782 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:33,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1031902746, now seen corresponding path program 1 times [2025-03-17 06:32:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:33,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711664376] [2025-03-17 06:32:33,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:32:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:33,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 06:32:33,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 06:32:33,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:33,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711664376] [2025-03-17 06:32:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711664376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:32:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896149968] [2025-03-17 06:32:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:33,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:32:33,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:33,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:32:33,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:32:33,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-03-17 06:32:33,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:32:33,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:33,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-03-17 06:32:33,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:34,080 INFO L124 PetriNetUnfolderBase]: 279/560 cut-off events. [2025-03-17 06:32:34,080 INFO L125 PetriNetUnfolderBase]: For 192/194 co-relation queries the response was YES. [2025-03-17 06:32:34,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 560 events. 279/560 cut-off events. For 192/194 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2488 event pairs, 55 based on Foata normal form. 20/539 useless extension candidates. Maximal degree in co-relation 1387. Up to 304 conditions per place. [2025-03-17 06:32:34,087 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2025-03-17 06:32:34,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 474 flow [2025-03-17 06:32:34,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:32:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:32:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-17 06:32:34,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2025-03-17 06:32:34,090 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2025-03-17 06:32:34,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 474 flow [2025-03-17 06:32:34,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:32:34,098 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 366 flow [2025-03-17 06:32:34,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2025-03-17 06:32:34,099 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2025-03-17 06:32:34,100 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 366 flow [2025-03-17 06:32:34,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:32:34,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:34,100 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:34,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:32:34,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:34,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash 33136680, now seen corresponding path program 1 times [2025-03-17 06:32:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:34,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122201538] [2025-03-17 06:32:34,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:32:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:34,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:32:34,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:32:34,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:34,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122201538] [2025-03-17 06:32:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122201538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:32:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102722684] [2025-03-17 06:32:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:34,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:32:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:34,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:32:34,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:32:34,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-17 06:32:34,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-03-17 06:32:34,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:34,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-17 06:32:34,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:34,577 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2025-03-17 06:32:34,577 INFO L125 PetriNetUnfolderBase]: For 1252/1269 co-relation queries the response was YES. [2025-03-17 06:32:34,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 859 events. 399/859 cut-off events. For 1252/1269 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4774 event pairs, 86 based on Foata normal form. 16/820 useless extension candidates. Maximal degree in co-relation 2722. Up to 360 conditions per place. [2025-03-17 06:32:34,581 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2025-03-17 06:32:34,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 942 flow [2025-03-17 06:32:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:32:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:32:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2025-03-17 06:32:34,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2025-03-17 06:32:34,582 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2025-03-17 06:32:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 942 flow [2025-03-17 06:32:34,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:32:34,592 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 588 flow [2025-03-17 06:32:34,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2025-03-17 06:32:34,594 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2025-03-17 06:32:34,594 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 588 flow [2025-03-17 06:32:34,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-03-17 06:32:34,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:34,594 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:34,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:32:34,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:34,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1090451670, now seen corresponding path program 2 times [2025-03-17 06:32:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:34,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167389866] [2025-03-17 06:32:34,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:32:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:34,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:32:34,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:32:34,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:32:34,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:34,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:34,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167389866] [2025-03-17 06:32:34,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167389866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:34,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:32:34,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302417476] [2025-03-17 06:32:34,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:34,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:32:34,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:34,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:32:34,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:32:34,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-03-17 06:32:34,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2025-03-17 06:32:34,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:34,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-03-17 06:32:34,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:35,378 INFO L124 PetriNetUnfolderBase]: 485/974 cut-off events. [2025-03-17 06:32:35,379 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2025-03-17 06:32:35,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3572 conditions, 974 events. 485/974 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5074 event pairs, 130 based on Foata normal form. 1/975 useless extension candidates. Maximal degree in co-relation 3547. Up to 623 conditions per place. [2025-03-17 06:32:35,387 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 77 selfloop transitions, 67 changer transitions 0/150 dead transitions. [2025-03-17 06:32:35,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 150 transitions, 1398 flow [2025-03-17 06:32:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:32:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 06:32:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2025-03-17 06:32:35,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39293139293139295 [2025-03-17 06:32:35,389 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 588 flow. Second operand 13 states and 189 transitions. [2025-03-17 06:32:35,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 150 transitions, 1398 flow [2025-03-17 06:32:35,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 150 transitions, 1358 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:32:35,400 INFO L231 Difference]: Finished difference. Result has 76 places, 116 transitions, 1098 flow [2025-03-17 06:32:35,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1098, PETRI_PLACES=76, PETRI_TRANSITIONS=116} [2025-03-17 06:32:35,401 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2025-03-17 06:32:35,401 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 116 transitions, 1098 flow [2025-03-17 06:32:35,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2025-03-17 06:32:35,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:35,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:35,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:32:35,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:35,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash -286641732, now seen corresponding path program 3 times [2025-03-17 06:32:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58305128] [2025-03-17 06:32:35,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:32:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:35,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:32:35,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:32:35,429 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:32:35,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58305128] [2025-03-17 06:32:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58305128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:32:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609217854] [2025-03-17 06:32:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:35,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:32:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:35,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:32:35,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:32:35,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-03-17 06:32:35,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 116 transitions, 1098 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 06:32:35,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:35,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-03-17 06:32:35,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:36,007 INFO L124 PetriNetUnfolderBase]: 468/966 cut-off events. [2025-03-17 06:32:36,007 INFO L125 PetriNetUnfolderBase]: For 2641/2669 co-relation queries the response was YES. [2025-03-17 06:32:36,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 966 events. 468/966 cut-off events. For 2641/2669 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5137 event pairs, 103 based on Foata normal form. 38/1001 useless extension candidates. Maximal degree in co-relation 3887. Up to 574 conditions per place. [2025-03-17 06:32:36,014 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 73 selfloop transitions, 74 changer transitions 0/158 dead transitions. [2025-03-17 06:32:36,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 158 transitions, 1666 flow [2025-03-17 06:32:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:32:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:32:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2025-03-17 06:32:36,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2025-03-17 06:32:36,017 INFO L175 Difference]: Start difference. First operand has 76 places, 116 transitions, 1098 flow. Second operand 9 states and 150 transitions. [2025-03-17 06:32:36,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 158 transitions, 1666 flow [2025-03-17 06:32:36,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 158 transitions, 1638 flow, removed 14 selfloop flow, removed 0 redundant places. [2025-03-17 06:32:36,028 INFO L231 Difference]: Finished difference. Result has 88 places, 133 transitions, 1479 flow [2025-03-17 06:32:36,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1479, PETRI_PLACES=88, PETRI_TRANSITIONS=133} [2025-03-17 06:32:36,028 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2025-03-17 06:32:36,029 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 133 transitions, 1479 flow [2025-03-17 06:32:36,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 06:32:36,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:36,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:36,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:32:36,029 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:36,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash 509881306, now seen corresponding path program 4 times [2025-03-17 06:32:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445968057] [2025-03-17 06:32:36,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:32:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:36,039 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 14 statements into 2 equivalence classes. [2025-03-17 06:32:36,042 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 12 of 14 statements. [2025-03-17 06:32:36,043 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-17 06:32:36,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445968057] [2025-03-17 06:32:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445968057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:36,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:36,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:32:36,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971677844] [2025-03-17 06:32:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:36,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:32:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:36,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:32:36,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:32:36,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2025-03-17 06:32:36,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 133 transitions, 1479 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2025-03-17 06:32:36,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:36,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2025-03-17 06:32:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:36,318 INFO L124 PetriNetUnfolderBase]: 397/888 cut-off events. [2025-03-17 06:32:36,318 INFO L125 PetriNetUnfolderBase]: For 3226/3245 co-relation queries the response was YES. [2025-03-17 06:32:36,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3888 conditions, 888 events. 397/888 cut-off events. For 3226/3245 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4972 event pairs, 5 based on Foata normal form. 42/928 useless extension candidates. Maximal degree in co-relation 3851. Up to 223 conditions per place. [2025-03-17 06:32:36,325 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 143 selfloop transitions, 47 changer transitions 0/214 dead transitions. [2025-03-17 06:32:36,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 214 transitions, 2351 flow [2025-03-17 06:32:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:32:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:32:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-17 06:32:36,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6576576576576577 [2025-03-17 06:32:36,326 INFO L175 Difference]: Start difference. First operand has 88 places, 133 transitions, 1479 flow. Second operand 6 states and 146 transitions. [2025-03-17 06:32:36,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 214 transitions, 2351 flow [2025-03-17 06:32:36,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 214 transitions, 2207 flow, removed 23 selfloop flow, removed 4 redundant places. [2025-03-17 06:32:36,353 INFO L231 Difference]: Finished difference. Result has 92 places, 147 transitions, 1532 flow [2025-03-17 06:32:36,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1532, PETRI_PLACES=92, PETRI_TRANSITIONS=147} [2025-03-17 06:32:36,355 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2025-03-17 06:32:36,355 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 147 transitions, 1532 flow [2025-03-17 06:32:36,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2025-03-17 06:32:36,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:36,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:36,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:32:36,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:36,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1659254438, now seen corresponding path program 5 times [2025-03-17 06:32:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:36,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028621125] [2025-03-17 06:32:36,356 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:32:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:36,366 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:32:36,371 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:32:36,371 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:32:36,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:36,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:36,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028621125] [2025-03-17 06:32:36,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028621125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:36,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:36,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:32:36,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229205945] [2025-03-17 06:32:36,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:36,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:32:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:36,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:32:36,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:32:36,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-17 06:32:36,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 147 transitions, 1532 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-03-17 06:32:36,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:36,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-17 06:32:36,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:36,853 INFO L124 PetriNetUnfolderBase]: 629/1400 cut-off events. [2025-03-17 06:32:36,854 INFO L125 PetriNetUnfolderBase]: For 5864/5879 co-relation queries the response was YES. [2025-03-17 06:32:36,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 1400 events. 629/1400 cut-off events. For 5864/5879 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8700 event pairs, 197 based on Foata normal form. 19/1412 useless extension candidates. Maximal degree in co-relation 6659. Up to 658 conditions per place. [2025-03-17 06:32:36,866 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 151 selfloop transitions, 52 changer transitions 0/222 dead transitions. [2025-03-17 06:32:36,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 222 transitions, 2536 flow [2025-03-17 06:32:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:32:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:32:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2025-03-17 06:32:36,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640926640926641 [2025-03-17 06:32:36,867 INFO L175 Difference]: Start difference. First operand has 92 places, 147 transitions, 1532 flow. Second operand 7 states and 166 transitions. [2025-03-17 06:32:36,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 222 transitions, 2536 flow [2025-03-17 06:32:36,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 222 transitions, 2463 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-17 06:32:36,892 INFO L231 Difference]: Finished difference. Result has 98 places, 159 transitions, 1791 flow [2025-03-17 06:32:36,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1791, PETRI_PLACES=98, PETRI_TRANSITIONS=159} [2025-03-17 06:32:36,896 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2025-03-17 06:32:36,896 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 159 transitions, 1791 flow [2025-03-17 06:32:36,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-03-17 06:32:36,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:36,896 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:36,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:32:36,896 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:36,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1576595186, now seen corresponding path program 6 times [2025-03-17 06:32:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874650588] [2025-03-17 06:32:36,897 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:32:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:36,904 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:32:36,907 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:32:36,907 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:32:36,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:37,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874650588] [2025-03-17 06:32:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874650588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:37,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:37,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:32:37,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949458797] [2025-03-17 06:32:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:37,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:32:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:37,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:32:37,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:32:37,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-17 06:32:37,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 159 transitions, 1791 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-03-17 06:32:37,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:37,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-17 06:32:37,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:37,425 INFO L124 PetriNetUnfolderBase]: 833/1849 cut-off events. [2025-03-17 06:32:37,425 INFO L125 PetriNetUnfolderBase]: For 9331/9355 co-relation queries the response was YES. [2025-03-17 06:32:37,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9116 conditions, 1849 events. 833/1849 cut-off events. For 9331/9355 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11154 event pairs, 238 based on Foata normal form. 23/1866 useless extension candidates. Maximal degree in co-relation 9074. Up to 568 conditions per place. [2025-03-17 06:32:37,443 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 186 selfloop transitions, 53 changer transitions 0/258 dead transitions. [2025-03-17 06:32:37,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 258 transitions, 3037 flow [2025-03-17 06:32:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:32:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:32:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2025-03-17 06:32:37,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2025-03-17 06:32:37,446 INFO L175 Difference]: Start difference. First operand has 98 places, 159 transitions, 1791 flow. Second operand 7 states and 168 transitions. [2025-03-17 06:32:37,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 258 transitions, 3037 flow [2025-03-17 06:32:37,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 258 transitions, 2984 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-03-17 06:32:37,476 INFO L231 Difference]: Finished difference. Result has 105 places, 171 transitions, 2064 flow [2025-03-17 06:32:37,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2064, PETRI_PLACES=105, PETRI_TRANSITIONS=171} [2025-03-17 06:32:37,478 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2025-03-17 06:32:37,479 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 171 transitions, 2064 flow [2025-03-17 06:32:37,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2025-03-17 06:32:37,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:37,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:37,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:32:37,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:37,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2046767256, now seen corresponding path program 7 times [2025-03-17 06:32:37,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:37,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364375671] [2025-03-17 06:32:37,480 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:32:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:37,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:32:37,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:32:37,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:37,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364375671] [2025-03-17 06:32:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364375671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:32:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738902875] [2025-03-17 06:32:37,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:37,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:32:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:37,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:32:37,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:32:37,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-03-17 06:32:37,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 171 transitions, 2064 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 06:32:37,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:37,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-03-17 06:32:37,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:38,207 INFO L124 PetriNetUnfolderBase]: 803/1705 cut-off events. [2025-03-17 06:32:38,207 INFO L125 PetriNetUnfolderBase]: For 8690/8749 co-relation queries the response was YES. [2025-03-17 06:32:38,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 1705 events. 803/1705 cut-off events. For 8690/8749 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9655 event pairs, 252 based on Foata normal form. 59/1746 useless extension candidates. Maximal degree in co-relation 8430. Up to 1238 conditions per place. [2025-03-17 06:32:38,221 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 113 selfloop transitions, 52 changer transitions 0/177 dead transitions. [2025-03-17 06:32:38,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 177 transitions, 2134 flow [2025-03-17 06:32:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:32:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:32:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2025-03-17 06:32:38,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2025-03-17 06:32:38,223 INFO L175 Difference]: Start difference. First operand has 105 places, 171 transitions, 2064 flow. Second operand 12 states and 186 transitions. [2025-03-17 06:32:38,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 177 transitions, 2134 flow [2025-03-17 06:32:38,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 177 transitions, 1980 flow, removed 46 selfloop flow, removed 6 redundant places. [2025-03-17 06:32:38,256 INFO L231 Difference]: Finished difference. Result has 112 places, 152 transitions, 1659 flow [2025-03-17 06:32:38,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1659, PETRI_PLACES=112, PETRI_TRANSITIONS=152} [2025-03-17 06:32:38,257 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 79 predicate places. [2025-03-17 06:32:38,257 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 152 transitions, 1659 flow [2025-03-17 06:32:38,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 06:32:38,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:38,258 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:38,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:32:38,258 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:38,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1310010252, now seen corresponding path program 1 times [2025-03-17 06:32:38,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:38,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073593440] [2025-03-17 06:32:38,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:32:38,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:38,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 06:32:38,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:32:38,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:38,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073593440] [2025-03-17 06:32:38,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073593440] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:32:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121043263] [2025-03-17 06:32:38,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:32:38,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:32:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:32:38,541 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) [2025-03-17 06:32:38,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:32:38,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 06:32:38,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:32:38,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:38,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:38,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-17 06:32:38,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:32:38,645 INFO L378 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 11 treesize of output 7 [2025-03-17 06:32:38,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 11 [2025-03-17 06:32:38,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 11 [2025-03-17 06:32:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:38,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:32:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:39,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121043263] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:32:39,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:32:39,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 22 [2025-03-17 06:32:39,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645525518] [2025-03-17 06:32:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:39,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:32:39,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:39,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:32:39,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:32:39,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-03-17 06:32:39,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 152 transitions, 1659 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:32:39,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:39,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-03-17 06:32:39,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:39,553 INFO L124 PetriNetUnfolderBase]: 1058/2288 cut-off events. [2025-03-17 06:32:39,553 INFO L125 PetriNetUnfolderBase]: For 9804/9838 co-relation queries the response was YES. [2025-03-17 06:32:39,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11008 conditions, 2288 events. 1058/2288 cut-off events. For 9804/9838 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 14085 event pairs, 110 based on Foata normal form. 25/2307 useless extension candidates. Maximal degree in co-relation 10963. Up to 762 conditions per place. [2025-03-17 06:32:39,573 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 142 selfloop transitions, 114 changer transitions 0/271 dead transitions. [2025-03-17 06:32:39,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 271 transitions, 3235 flow [2025-03-17 06:32:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:32:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:32:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-03-17 06:32:39,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2025-03-17 06:32:39,575 INFO L175 Difference]: Start difference. First operand has 112 places, 152 transitions, 1659 flow. Second operand 7 states and 132 transitions. [2025-03-17 06:32:39,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 271 transitions, 3235 flow [2025-03-17 06:32:39,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 271 transitions, 3091 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-03-17 06:32:39,599 INFO L231 Difference]: Finished difference. Result has 113 places, 209 transitions, 2544 flow [2025-03-17 06:32:39,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2544, PETRI_PLACES=113, PETRI_TRANSITIONS=209} [2025-03-17 06:32:39,600 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 80 predicate places. [2025-03-17 06:32:39,600 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 209 transitions, 2544 flow [2025-03-17 06:32:39,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:32:39,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:39,601 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:39,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:32:39,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 06:32:39,805 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:39,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 50611242, now seen corresponding path program 2 times [2025-03-17 06:32:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350260470] [2025-03-17 06:32:39,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:32:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:39,825 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 06:32:39,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 20 statements. [2025-03-17 06:32:39,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:32:39,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:32:39,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350260470] [2025-03-17 06:32:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350260470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:39,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:39,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:32:39,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85827516] [2025-03-17 06:32:39,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:39,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:32:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:39,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:32:39,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:32:40,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-03-17 06:32:40,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 209 transitions, 2544 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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) [2025-03-17 06:32:40,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:40,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-03-17 06:32:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:40,598 INFO L124 PetriNetUnfolderBase]: 1410/2903 cut-off events. [2025-03-17 06:32:40,599 INFO L125 PetriNetUnfolderBase]: For 16284/16308 co-relation queries the response was YES. [2025-03-17 06:32:40,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15226 conditions, 2903 events. 1410/2903 cut-off events. For 16284/16308 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 18031 event pairs, 206 based on Foata normal form. 24/2922 useless extension candidates. Maximal degree in co-relation 15180. Up to 1109 conditions per place. [2025-03-17 06:32:40,617 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 251 selfloop transitions, 142 changer transitions 0/399 dead transitions. [2025-03-17 06:32:40,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 399 transitions, 5317 flow [2025-03-17 06:32:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:32:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 06:32:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 222 transitions. [2025-03-17 06:32:40,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-17 06:32:40,619 INFO L175 Difference]: Start difference. First operand has 113 places, 209 transitions, 2544 flow. Second operand 14 states and 222 transitions. [2025-03-17 06:32:40,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 399 transitions, 5317 flow [2025-03-17 06:32:40,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 399 transitions, 5214 flow, removed 30 selfloop flow, removed 1 redundant places. [2025-03-17 06:32:40,658 INFO L231 Difference]: Finished difference. Result has 137 places, 311 transitions, 4389 flow [2025-03-17 06:32:40,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4389, PETRI_PLACES=137, PETRI_TRANSITIONS=311} [2025-03-17 06:32:40,659 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2025-03-17 06:32:40,659 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 311 transitions, 4389 flow [2025-03-17 06:32:40,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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) [2025-03-17 06:32:40,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:40,660 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:40,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:32:40,660 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:40,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash -72705052, now seen corresponding path program 3 times [2025-03-17 06:32:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671499279] [2025-03-17 06:32:40,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:32:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:40,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-03-17 06:32:40,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:32:40,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:32:40,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:40,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671499279] [2025-03-17 06:32:40,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671499279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:40,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:40,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:32:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201281422] [2025-03-17 06:32:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:40,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 06:32:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:40,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 06:32:40,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:32:40,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-03-17 06:32:40,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 311 transitions, 4389 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2025-03-17 06:32:40,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:40,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-03-17 06:32:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:42,009 INFO L124 PetriNetUnfolderBase]: 2631/5406 cut-off events. [2025-03-17 06:32:42,009 INFO L125 PetriNetUnfolderBase]: For 51254/51409 co-relation queries the response was YES. [2025-03-17 06:32:42,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33591 conditions, 5406 events. 2631/5406 cut-off events. For 51254/51409 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 36813 event pairs, 457 based on Foata normal form. 159/5515 useless extension candidates. Maximal degree in co-relation 33533. Up to 2291 conditions per place. [2025-03-17 06:32:42,051 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 406 selfloop transitions, 336 changer transitions 0/758 dead transitions. [2025-03-17 06:32:42,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 758 transitions, 11668 flow [2025-03-17 06:32:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:32:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:32:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 302 transitions. [2025-03-17 06:32:42,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5441441441441441 [2025-03-17 06:32:42,053 INFO L175 Difference]: Start difference. First operand has 137 places, 311 transitions, 4389 flow. Second operand 15 states and 302 transitions. [2025-03-17 06:32:42,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 758 transitions, 11668 flow [2025-03-17 06:32:42,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 758 transitions, 11392 flow, removed 138 selfloop flow, removed 0 redundant places. [2025-03-17 06:32:42,227 INFO L231 Difference]: Finished difference. Result has 165 places, 591 transitions, 9941 flow [2025-03-17 06:32:42,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4293, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9941, PETRI_PLACES=165, PETRI_TRANSITIONS=591} [2025-03-17 06:32:42,228 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 132 predicate places. [2025-03-17 06:32:42,228 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 591 transitions, 9941 flow [2025-03-17 06:32:42,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2025-03-17 06:32:42,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:42,228 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:42,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:32:42,228 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:42,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash 899359180, now seen corresponding path program 4 times [2025-03-17 06:32:42,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:42,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438688333] [2025-03-17 06:32:42,229 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:32:42,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:42,236 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-03-17 06:32:42,238 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 16 of 20 statements. [2025-03-17 06:32:42,238 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-17 06:32:42,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:32:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438688333] [2025-03-17 06:32:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438688333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:42,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:42,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:32:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276749282] [2025-03-17 06:32:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:42,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:32:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:42,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:32:42,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:32:42,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2025-03-17 06:32:42,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 591 transitions, 9941 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2025-03-17 06:32:42,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:42,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2025-03-17 06:32:42,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:43,488 INFO L124 PetriNetUnfolderBase]: 2345/5031 cut-off events. [2025-03-17 06:32:43,488 INFO L125 PetriNetUnfolderBase]: For 66877/67147 co-relation queries the response was YES. [2025-03-17 06:32:43,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35554 conditions, 5031 events. 2345/5031 cut-off events. For 66877/67147 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 35534 event pairs, 322 based on Foata normal form. 130/5084 useless extension candidates. Maximal degree in co-relation 35480. Up to 2446 conditions per place. [2025-03-17 06:32:43,599 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 506 selfloop transitions, 146 changer transitions 0/715 dead transitions. [2025-03-17 06:32:43,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 715 transitions, 13023 flow [2025-03-17 06:32:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:32:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:32:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-03-17 06:32:43,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2025-03-17 06:32:43,603 INFO L175 Difference]: Start difference. First operand has 165 places, 591 transitions, 9941 flow. Second operand 5 states and 123 transitions. [2025-03-17 06:32:43,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 715 transitions, 13023 flow [2025-03-17 06:32:44,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 715 transitions, 12715 flow, removed 154 selfloop flow, removed 0 redundant places. [2025-03-17 06:32:44,015 INFO L231 Difference]: Finished difference. Result has 171 places, 623 transitions, 10533 flow [2025-03-17 06:32:44,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9713, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10533, PETRI_PLACES=171, PETRI_TRANSITIONS=623} [2025-03-17 06:32:44,017 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2025-03-17 06:32:44,017 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 623 transitions, 10533 flow [2025-03-17 06:32:44,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2025-03-17 06:32:44,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:44,018 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:44,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:32:44,018 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:44,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash 292194522, now seen corresponding path program 5 times [2025-03-17 06:32:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903792960] [2025-03-17 06:32:44,019 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:32:44,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:44,027 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 06:32:44,035 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:32:44,035 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:32:44,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:44,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903792960] [2025-03-17 06:32:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903792960] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:32:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502740808] [2025-03-17 06:32:44,950 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:32:44,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:32:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:32:44,952 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) [2025-03-17 06:32:45,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:32:45,075 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 06:32:45,095 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 06:32:45,095 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:32:45,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:45,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-17 06:32:45,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:32:45,108 INFO L378 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 11 treesize of output 7 [2025-03-17 06:32:45,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 11 [2025-03-17 06:32:45,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 11 [2025-03-17 06:32:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:45,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:32:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:45,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502740808] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:32:45,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:32:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2025-03-17 06:32:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376720565] [2025-03-17 06:32:45,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:32:45,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:32:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:45,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:32:45,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:32:45,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-03-17 06:32:45,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 623 transitions, 10533 flow. Second operand has 23 states, 23 states have (on average 9.173913043478262) internal successors, (211), 23 states have internal predecessors, (211), 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) [2025-03-17 06:32:45,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:45,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-03-17 06:32:45,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:32:53,648 INFO L124 PetriNetUnfolderBase]: 11907/24158 cut-off events. [2025-03-17 06:32:53,648 INFO L125 PetriNetUnfolderBase]: For 350595/350637 co-relation queries the response was YES. [2025-03-17 06:32:53,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178937 conditions, 24158 events. 11907/24158 cut-off events. For 350595/350637 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 206943 event pairs, 1327 based on Foata normal form. 204/24354 useless extension candidates. Maximal degree in co-relation 178860. Up to 4744 conditions per place. [2025-03-17 06:32:54,020 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 1733 selfloop transitions, 2295 changer transitions 0/4034 dead transitions. [2025-03-17 06:32:54,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 4034 transitions, 71778 flow [2025-03-17 06:32:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-03-17 06:32:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2025-03-17 06:32:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1700 transitions. [2025-03-17 06:32:54,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44607714510627133 [2025-03-17 06:32:54,024 INFO L175 Difference]: Start difference. First operand has 171 places, 623 transitions, 10533 flow. Second operand 103 states and 1700 transitions. [2025-03-17 06:32:54,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 4034 transitions, 71778 flow [2025-03-17 06:32:56,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 4034 transitions, 70054 flow, removed 170 selfloop flow, removed 2 redundant places. [2025-03-17 06:32:56,856 INFO L231 Difference]: Finished difference. Result has 328 places, 2936 transitions, 57676 flow [2025-03-17 06:32:56,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10284, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=57676, PETRI_PLACES=328, PETRI_TRANSITIONS=2936} [2025-03-17 06:32:56,857 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 295 predicate places. [2025-03-17 06:32:56,857 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 2936 transitions, 57676 flow [2025-03-17 06:32:56,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.173913043478262) internal successors, (211), 23 states have internal predecessors, (211), 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) [2025-03-17 06:32:56,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:32:56,858 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:32:56,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:32:57,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-17 06:32:57,059 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:32:57,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:32:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1125231189, now seen corresponding path program 1 times [2025-03-17 06:32:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:32:57,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840791108] [2025-03-17 06:32:57,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:32:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:32:57,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 06:32:57,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 06:32:57,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:32:57,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:32:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:32:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:32:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840791108] [2025-03-17 06:32:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840791108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:32:57,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:32:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:32:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933570921] [2025-03-17 06:32:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:32:57,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:32:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:32:57,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:32:57,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:32:57,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-17 06:32:57,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 2936 transitions, 57676 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2025-03-17 06:32:57,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:32:57,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-17 06:32:57,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:33:10,261 INFO L124 PetriNetUnfolderBase]: 10827/22709 cut-off events. [2025-03-17 06:33:10,261 INFO L125 PetriNetUnfolderBase]: For 469520/470099 co-relation queries the response was YES. [2025-03-17 06:33:10,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188710 conditions, 22709 events. 10827/22709 cut-off events. For 469520/470099 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 198427 event pairs, 2294 based on Foata normal form. 43/22577 useless extension candidates. Maximal degree in co-relation 188575. Up to 19612 conditions per place. [2025-03-17 06:33:10,594 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 2620 selfloop transitions, 8 changer transitions 28/2906 dead transitions. [2025-03-17 06:33:10,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 2906 transitions, 62245 flow [2025-03-17 06:33:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:33:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:33:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2025-03-17 06:33:10,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2025-03-17 06:33:10,595 INFO L175 Difference]: Start difference. First operand has 328 places, 2936 transitions, 57676 flow. Second operand 5 states and 95 transitions. [2025-03-17 06:33:10,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 2906 transitions, 62245 flow [2025-03-17 06:33:17,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2906 transitions, 58341 flow, removed 1952 selfloop flow, removed 0 redundant places. [2025-03-17 06:33:17,863 INFO L231 Difference]: Finished difference. Result has 334 places, 2877 transitions, 52595 flow [2025-03-17 06:33:17,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=52952, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=52595, PETRI_PLACES=334, PETRI_TRANSITIONS=2877} [2025-03-17 06:33:17,865 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 301 predicate places. [2025-03-17 06:33:17,865 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 2877 transitions, 52595 flow [2025-03-17 06:33:17,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2025-03-17 06:33:17,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:33:17,866 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:33:17,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:33:17,866 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:33:17,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:33:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2044358304, now seen corresponding path program 1 times [2025-03-17 06:33:17,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:33:17,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986498124] [2025-03-17 06:33:17,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:33:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:33:17,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 06:33:17,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 06:33:17,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:33:17,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:33:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:33:18,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:33:18,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986498124] [2025-03-17 06:33:18,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986498124] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:33:18,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481112241] [2025-03-17 06:33:18,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:33:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:33:18,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:33:18,049 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) [2025-03-17 06:33:18,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:33:18,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 06:33:18,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 06:33:18,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:33:18,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:33:18,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-17 06:33:18,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:33:18,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2025-03-17 06:33:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:33:18,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:33:18,485 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2025-03-17 06:33:18,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2025-03-17 06:33:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:33:18,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481112241] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:33:18,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:33:18,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-17 06:33:18,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448794330] [2025-03-17 06:33:18,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:33:18,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:33:18,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:33:18,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:33:18,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:33:18,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-03-17 06:33:18,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 2877 transitions, 52595 flow. Second operand has 23 states, 23 states have (on average 9.217391304347826) internal successors, (212), 23 states have internal predecessors, (212), 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) [2025-03-17 06:33:18,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:33:18,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-03-17 06:33:18,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:33:33,231 INFO L124 PetriNetUnfolderBase]: 12247/24754 cut-off events. [2025-03-17 06:33:33,232 INFO L125 PetriNetUnfolderBase]: For 481302/481569 co-relation queries the response was YES. [2025-03-17 06:33:33,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197166 conditions, 24754 events. 12247/24754 cut-off events. For 481302/481569 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 210436 event pairs, 870 based on Foata normal form. 474/25223 useless extension candidates. Maximal degree in co-relation 197027. Up to 8455 conditions per place. [2025-03-17 06:33:33,607 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 2213 selfloop transitions, 1692 changer transitions 9/3919 dead transitions. [2025-03-17 06:33:33,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 3919 transitions, 76494 flow [2025-03-17 06:33:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:33:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 06:33:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 202 transitions. [2025-03-17 06:33:33,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38996138996138996 [2025-03-17 06:33:33,608 INFO L175 Difference]: Start difference. First operand has 334 places, 2877 transitions, 52595 flow. Second operand 14 states and 202 transitions. [2025-03-17 06:33:33,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 3919 transitions, 76494 flow [2025-03-17 06:33:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 3919 transitions, 73103 flow, removed 118 selfloop flow, removed 35 redundant places. [2025-03-17 06:33:42,332 INFO L231 Difference]: Finished difference. Result has 303 places, 3121 transitions, 58334 flow [2025-03-17 06:33:42,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=49893, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=58334, PETRI_PLACES=303, PETRI_TRANSITIONS=3121} [2025-03-17 06:33:42,335 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 270 predicate places. [2025-03-17 06:33:42,335 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 3121 transitions, 58334 flow [2025-03-17 06:33:42,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.217391304347826) internal successors, (212), 23 states have internal predecessors, (212), 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) [2025-03-17 06:33:42,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:33:42,336 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:33:42,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:33:42,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:33:42,537 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-17 06:33:42,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:33:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1921554233, now seen corresponding path program 1 times [2025-03-17 06:33:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:33:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634143851] [2025-03-17 06:33:42,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:33:42,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:33:42,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:33:42,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:33:42,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:33:42,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:33:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:33:43,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:33:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634143851] [2025-03-17 06:33:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634143851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:33:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270053343] [2025-03-17 06:33:43,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:33:43,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:33:43,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:33:43,111 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) [2025-03-17 06:33:43,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:33:43,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:33:43,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:33:43,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:33:43,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:33:43,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 06:33:43,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:33:43,270 INFO L378 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 13 treesize of output 9 [2025-03-17 06:33:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:33:43,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:33:43,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2025-03-17 06:33:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:33:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270053343] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:33:43,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:33:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 19 [2025-03-17 06:33:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087298625] [2025-03-17 06:33:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:33:43,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:33:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:33:43,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:33:43,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-03-17 06:33:43,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2025-03-17 06:33:43,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 3121 transitions, 58334 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2025-03-17 06:33:43,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:33:43,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2025-03-17 06:33:43,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:33:47,555 INFO L124 PetriNetUnfolderBase]: 3031/7131 cut-off events. [2025-03-17 06:33:47,555 INFO L125 PetriNetUnfolderBase]: For 144493/144770 co-relation queries the response was YES. [2025-03-17 06:33:47,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59506 conditions, 7131 events. 3031/7131 cut-off events. For 144493/144770 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 54429 event pairs, 59 based on Foata normal form. 302/7387 useless extension candidates. Maximal degree in co-relation 59405. Up to 1641 conditions per place. [2025-03-17 06:33:47,644 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 0 selfloop transitions, 0 changer transitions 1822/1822 dead transitions. [2025-03-17 06:33:47,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1822 transitions, 39111 flow [2025-03-17 06:33:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:33:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:33:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2025-03-17 06:33:47,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2025-03-17 06:33:47,645 INFO L175 Difference]: Start difference. First operand has 303 places, 3121 transitions, 58334 flow. Second operand 7 states and 125 transitions. [2025-03-17 06:33:47,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1822 transitions, 39111 flow [2025-03-17 06:33:48,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1822 transitions, 34222 flow, removed 349 selfloop flow, removed 29 redundant places. [2025-03-17 06:33:48,674 INFO L231 Difference]: Finished difference. Result has 266 places, 0 transitions, 0 flow [2025-03-17 06:33:48,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=29848, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=266, PETRI_TRANSITIONS=0} [2025-03-17 06:33:48,675 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 233 predicate places. [2025-03-17 06:33:48,675 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 0 transitions, 0 flow [2025-03-17 06:33:48,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2025-03-17 06:33:48,678 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-17 06:33:48,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-17 06:33:48,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-03-17 06:33:48,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-17 06:33:48,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-17 06:33:48,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 06:33:48,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 06:33:48,881 INFO L422 BasicCegarLoop]: Path program histogram: [7, 5, 1, 1, 1, 1, 1] [2025-03-17 06:33:48,890 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 06:33:48,890 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 06:33:48,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:33:48 BasicIcfg [2025-03-17 06:33:48,896 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 06:33:48,899 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 06:33:48,899 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 06:33:48,899 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 06:33:48,899 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:32:32" (3/4) ... [2025-03-17 06:33:48,903 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 06:33:48,905 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure worker [2025-03-17 06:33:48,912 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2025-03-17 06:33:48,915 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-17 06:33:48,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-17 06:33:48,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 06:33:48,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 06:33:48,992 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 06:33:48,993 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 06:33:48,994 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 06:33:48,994 INFO L158 Benchmark]: Toolchain (without parser) took 76944.14ms. Allocated memory was 142.6MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 110.8MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. [2025-03-17 06:33:48,994 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:33:48,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.22ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 90.3MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 06:33:48,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.72ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 88.5MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:33:48,997 INFO L158 Benchmark]: Boogie Preprocessor took 24.77ms. Allocated memory is still 142.6MB. Free memory was 88.5MB in the beginning and 86.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:33:48,997 INFO L158 Benchmark]: IcfgBuilder took 475.43ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 54.5MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 06:33:48,997 INFO L158 Benchmark]: TraceAbstraction took 75941.47ms. Allocated memory was 142.6MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 53.4MB in the beginning and 2.6GB in the end (delta: -2.6GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2025-03-17 06:33:48,997 INFO L158 Benchmark]: Witness Printer took 95.03ms. Allocated memory is still 6.1GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:33:48,998 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.22ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 90.3MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.72ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 88.5MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.77ms. Allocated memory is still 142.6MB. Free memory was 88.5MB in the beginning and 86.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 475.43ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 54.5MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 75941.47ms. Allocated memory was 142.6MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 53.4MB in the beginning and 2.6GB in the end (delta: -2.6GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. * Witness Printer took 95.03ms. Allocated memory is still 6.1GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 65 edges, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 75.8s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 68.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2144 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2098 mSDsluCounter, 664 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 583 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6268 IncrementalHoareTripleChecker+Invalid, 6473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 81 mSDtfsCounter, 6268 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 491 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5504 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58334occurred in iteration=16, InterpolantAutomatonStates: 243, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 395 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 467 ConstructedInterpolants, 0 QuantifiedInterpolants, 4181 SizeOfPredicates, 76 NumberOfNonLiveVariables, 729 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 25 InterpolantComputations, 15 PerfectInterpolantSequences, 18/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 06:33:49,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE