./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 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/weaver/popl20-more-max-array-hom.wvr.c -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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:07:40,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:07:40,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:07:40,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:07:40,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:07:40,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:07:40,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:07:40,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:07:40,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:07:40,631 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:07:40,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:07:40,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:07:40,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:07:40,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:07:40,632 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:07:40,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:07:40,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:07:40,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:07:40,633 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 -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2025-03-14 01:07:40,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:07:40,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:07:40,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:07:40,873 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:07:40,873 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:07:40,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2025-03-14 01:07:42,053 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f0f1fb2/68f0a65aa1b145c7ab2479cc42a6663c/FLAG719dcb0fb [2025-03-14 01:07:42,311 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:07:42,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2025-03-14 01:07:42,318 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f0f1fb2/68f0a65aa1b145c7ab2479cc42a6663c/FLAG719dcb0fb [2025-03-14 01:07:42,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f0f1fb2/68f0a65aa1b145c7ab2479cc42a6663c [2025-03-14 01:07:42,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:07:42,338 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:07:42,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:07:42,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:07:42,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:07:42,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133c9408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42, skipping insertion in model container [2025-03-14 01:07:42,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,360 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:07:42,488 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/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2025-03-14 01:07:42,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:07:42,505 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:07:42,525 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/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2025-03-14 01:07:42,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:07:42,539 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:07:42,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42 WrapperNode [2025-03-14 01:07:42,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:07:42,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:07:42,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:07:42,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:07:42,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,568 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 84 [2025-03-14 01:07:42,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:07:42,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:07:42,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:07:42,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:07:42,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,587 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-14 01:07:42,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,594 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:07:42,598 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:07:42,598 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:07:42,598 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:07:42,599 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (1/1) ... [2025-03-14 01:07:42,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:07:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:07:42,624 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) [2025-03-14 01:07:42,626 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 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:07:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:07:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:07:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:07:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:07:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:07:42,644 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:07:42,716 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:07:42,718 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:07:42,944 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:07:42,945 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:07:42,945 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:07:43,129 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:07:43,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:07:43 BoogieIcfgContainer [2025-03-14 01:07:43,130 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:07:43,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:07:43,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:07:43,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:07:43,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:07:42" (1/3) ... [2025-03-14 01:07:43,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc856ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:07:43, skipping insertion in model container [2025-03-14 01:07:43,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:07:42" (2/3) ... [2025-03-14 01:07:43,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc856ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:07:43, skipping insertion in model container [2025-03-14 01:07:43,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:07:43" (3/3) ... [2025-03-14 01:07:43,138 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2025-03-14 01:07:43,151 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:07:43,152 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array-hom.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-14 01:07:43,152 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:07:43,195 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-14 01:07:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2025-03-14 01:07:43,241 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-03-14 01:07:43,243 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:07:43,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-03-14 01:07:43,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2025-03-14 01:07:43,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2025-03-14 01:07:43,258 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:07:43,268 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;@664e06c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:07:43,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 01:07:43,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:07:43,285 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-03-14 01:07:43,285 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:07:43,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:07:43,285 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:07:43,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:07:43,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:07:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash 557860275, now seen corresponding path program 1 times [2025-03-14 01:07:43,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:07:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205728922] [2025-03-14 01:07:43,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:07:43,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-14 01:07:43,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-14 01:07:43,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:43,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:07:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:07:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205728922] [2025-03-14 01:07:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205728922] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:07:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:07:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:07:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545950303] [2025-03-14 01:07:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:07:43,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:07:43,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:07:43,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:07:43,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:07:43,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-03-14 01:07:43,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-14 01:07:43,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:07:43,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-03-14 01:07:43,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:07:44,078 INFO L124 PetriNetUnfolderBase]: 617/954 cut-off events. [2025-03-14 01:07:44,079 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-03-14 01:07:44,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 954 events. 617/954 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3780 event pairs, 126 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 1715. Up to 677 conditions per place. [2025-03-14 01:07:44,107 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2025-03-14 01:07:44,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2025-03-14 01:07:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:07:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:07:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-03-14 01:07:44,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-03-14 01:07:44,119 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2025-03-14 01:07:44,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2025-03-14 01:07:44,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:07:44,127 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2025-03-14 01:07:44,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2025-03-14 01:07:44,130 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2025-03-14 01:07:44,131 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2025-03-14 01:07:44,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-14 01:07:44,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:07:44,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:07:44,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:07:44,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:07:44,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:07:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1404449691, now seen corresponding path program 1 times [2025-03-14 01:07:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:07:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761385796] [2025-03-14 01:07:44,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:07:44,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:07:44,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:07:44,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:44,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:07:44,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:07:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761385796] [2025-03-14 01:07:44,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761385796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:07:44,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:07:44,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:07:44,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357551829] [2025-03-14 01:07:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:07:44,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:07:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:07:44,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:07:44,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:07:44,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-03-14 01:07:44,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-14 01:07:44,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:07:44,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-03-14 01:07:44,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:07:44,374 INFO L124 PetriNetUnfolderBase]: 617/965 cut-off events. [2025-03-14 01:07:44,375 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-03-14 01:07:44,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 965 events. 617/965 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4078 event pairs, 407 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 802. Up to 895 conditions per place. [2025-03-14 01:07:44,383 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2025-03-14 01:07:44,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2025-03-14 01:07:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:07:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:07:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-03-14 01:07:44,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-03-14 01:07:44,384 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2025-03-14 01:07:44,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2025-03-14 01:07:44,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:07:44,386 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2025-03-14 01:07:44,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2025-03-14 01:07:44,386 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-03-14 01:07:44,386 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2025-03-14 01:07:44,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-14 01:07:44,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:07:44,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:07:44,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:07:44,387 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:07:44,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:07:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash 779917777, now seen corresponding path program 1 times [2025-03-14 01:07:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:07:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870047624] [2025-03-14 01:07:44,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:07:44,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:07:44,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:07:44,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:44,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:07:44,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:07:44,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870047624] [2025-03-14 01:07:44,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870047624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:07:44,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:07:44,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:07:44,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560369778] [2025-03-14 01:07:44,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:07:44,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:07:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:07:44,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:07:44,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:07:44,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:07:44,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:07:44,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:07:44,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:07:44,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:07:44,628 INFO L124 PetriNetUnfolderBase]: 790/1161 cut-off events. [2025-03-14 01:07:44,629 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2025-03-14 01:07:44,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 1161 events. 790/1161 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4572 event pairs, 246 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2562. Up to 576 conditions per place. [2025-03-14 01:07:44,634 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2025-03-14 01:07:44,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2025-03-14 01:07:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:07:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:07:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-03-14 01:07:44,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2025-03-14 01:07:44,637 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2025-03-14 01:07:44,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2025-03-14 01:07:44,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-14 01:07:44,639 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2025-03-14 01:07:44,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-03-14 01:07:44,639 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-03-14 01:07:44,640 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2025-03-14 01:07:44,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:07:44,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:07:44,640 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:07:44,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:07:44,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:07:44,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:07:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1043708507, now seen corresponding path program 1 times [2025-03-14 01:07:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:07:44,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497347268] [2025-03-14 01:07:44,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:07:44,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:07:44,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:07:44,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:44,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:07:44,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:07:44,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497347268] [2025-03-14 01:07:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497347268] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:07:44,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124744146] [2025-03-14 01:07:44,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:44,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:07:44,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:07:44,735 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) [2025-03-14 01:07:44,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:07:44,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:07:44,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:07:44,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:44,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:44,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 01:07:44,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:07:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:07:44,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:07:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:07:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124744146] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:07:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:07:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2025-03-14 01:07:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866840965] [2025-03-14 01:07:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:07:44,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:07:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:07:44,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:07:44,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:07:44,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:07:44,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2025-03-14 01:07:44,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:07:44,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:07:44,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:07:45,046 INFO L124 PetriNetUnfolderBase]: 855/1295 cut-off events. [2025-03-14 01:07:45,047 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2025-03-14 01:07:45,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1295 events. 855/1295 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5382 event pairs, 256 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3227. Up to 670 conditions per place. [2025-03-14 01:07:45,054 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2025-03-14 01:07:45,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2025-03-14 01:07:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:07:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:07:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-03-14 01:07:45,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-03-14 01:07:45,056 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2025-03-14 01:07:45,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2025-03-14 01:07:45,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:07:45,059 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2025-03-14 01:07:45,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-03-14 01:07:45,061 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2025-03-14 01:07:45,062 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2025-03-14 01:07:45,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2025-03-14 01:07:45,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:07:45,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:07:45,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 01:07:45,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:07:45,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:07:45,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:07:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1212184845, now seen corresponding path program 1 times [2025-03-14 01:07:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:07:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860265015] [2025-03-14 01:07:45,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:07:45,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:07:45,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:07:45,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:45,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:07:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:07:46,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860265015] [2025-03-14 01:07:46,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860265015] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:07:46,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875930141] [2025-03-14 01:07:46,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:07:46,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:07:46,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:07:46,049 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) [2025-03-14 01:07:46,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:07:46,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:07:46,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:07:46,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:07:46,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:07:46,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-14 01:07:46,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:07:46,197 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 15 treesize of output 1 [2025-03-14 01:07:46,422 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 55 treesize of output 31 [2025-03-14 01:07:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:07:46,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:07:48,121 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 225 treesize of output 207 [2025-03-14 01:07:48,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:07:48,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 290 [2025-03-14 01:08:11,878 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 294 treesize of output 264 [2025-03-14 01:08:11,893 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2025-03-14 01:08:11,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 387 treesize of output 1 [2025-03-14 01:08:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875930141] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:11,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2025-03-14 01:08:11,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959367147] [2025-03-14 01:08:11,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:11,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-14 01:08:11,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:11,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-14 01:08:11,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2025-03-14 01:08:12,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:08:12,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 25 states, 25 states have (on average 8.88) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:12,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:12,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:08:12,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:13,896 INFO L124 PetriNetUnfolderBase]: 1841/2761 cut-off events. [2025-03-14 01:08:13,896 INFO L125 PetriNetUnfolderBase]: For 1721/1721 co-relation queries the response was YES. [2025-03-14 01:08:13,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 2761 events. 1841/2761 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12690 event pairs, 106 based on Foata normal form. 1/2761 useless extension candidates. Maximal degree in co-relation 5614. Up to 1375 conditions per place. [2025-03-14 01:08:13,910 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2025-03-14 01:08:13,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2025-03-14 01:08:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-14 01:08:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-14 01:08:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2025-03-14 01:08:13,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2025-03-14 01:08:13,915 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2025-03-14 01:08:13,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2025-03-14 01:08:13,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 01:08:13,922 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2025-03-14 01:08:13,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2025-03-14 01:08:13,923 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2025-03-14 01:08:13,923 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2025-03-14 01:08:13,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.88) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:13,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:13,924 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:13,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:14,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:14,130 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:14,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash 886983781, now seen corresponding path program 2 times [2025-03-14 01:08:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:14,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43425945] [2025-03-14 01:08:14,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:14,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:14,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:14,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:14,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:14,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43425945] [2025-03-14 01:08:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43425945] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922142746] [2025-03-14 01:08:14,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:14,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:14,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:14,618 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) [2025-03-14 01:08:14,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:08:14,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:14,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:14,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:14,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:14,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-14 01:08:14,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:14,827 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 54 treesize of output 30 [2025-03-14 01:08:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:14,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:15,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:15,056 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 131 treesize of output 75 [2025-03-14 01:08:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:15,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922142746] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:15,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:15,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2025-03-14 01:08:15,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218307842] [2025-03-14 01:08:15,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:15,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-14 01:08:15,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:15,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-14 01:08:15,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-03-14 01:08:15,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-03-14 01:08:15,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 21 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) [2025-03-14 01:08:15,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:15,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-03-14 01:08:15,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:16,162 INFO L124 PetriNetUnfolderBase]: 1618/2624 cut-off events. [2025-03-14 01:08:16,162 INFO L125 PetriNetUnfolderBase]: For 3621/3621 co-relation queries the response was YES. [2025-03-14 01:08:16,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8555 conditions, 2624 events. 1618/2624 cut-off events. For 3621/3621 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13583 event pairs, 74 based on Foata normal form. 2/2622 useless extension candidates. Maximal degree in co-relation 8005. Up to 1663 conditions per place. [2025-03-14 01:08:16,177 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 139 selfloop transitions, 89 changer transitions 1/235 dead transitions. [2025-03-14 01:08:16,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1631 flow [2025-03-14 01:08:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-14 01:08:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-14 01:08:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 316 transitions. [2025-03-14 01:08:16,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.455988455988456 [2025-03-14 01:08:16,180 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 21 states and 316 transitions. [2025-03-14 01:08:16,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1631 flow [2025-03-14 01:08:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1469 flow, removed 54 selfloop flow, removed 3 redundant places. [2025-03-14 01:08:16,191 INFO L231 Difference]: Finished difference. Result has 91 places, 150 transitions, 1050 flow [2025-03-14 01:08:16,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1050, PETRI_PLACES=91, PETRI_TRANSITIONS=150} [2025-03-14 01:08:16,192 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 56 predicate places. [2025-03-14 01:08:16,192 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 150 transitions, 1050 flow [2025-03-14 01:08:16,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 21 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) [2025-03-14 01:08:16,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:16,192 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:16,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-14 01:08:16,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:16,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:16,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1745271629, now seen corresponding path program 3 times [2025-03-14 01:08:16,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:16,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506823901] [2025-03-14 01:08:16,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:16,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:16,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:16,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:16,409 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:16,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:16,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506823901] [2025-03-14 01:08:16,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506823901] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:16,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478082979] [2025-03-14 01:08:16,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:16,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:16,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:16,805 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) [2025-03-14 01:08:16,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 01:08:16,842 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:16,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:16,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:16,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:16,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-14 01:08:16,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:16,890 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 15 treesize of output 1 [2025-03-14 01:08:17,054 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 59 treesize of output 35 [2025-03-14 01:08:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:17,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:18,318 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 106 treesize of output 96 [2025-03-14 01:08:18,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:18,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 119 [2025-03-14 01:08:18,525 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 182 treesize of output 166 [2025-03-14 01:08:18,535 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-03-14 01:08:18,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2025-03-14 01:08:18,539 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 229 treesize of output 205 [2025-03-14 01:08:18,548 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-03-14 01:08:18,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2025-03-14 01:08:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:18,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478082979] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:18,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:18,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2025-03-14 01:08:18,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243023274] [2025-03-14 01:08:18,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:18,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-14 01:08:18,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:18,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-14 01:08:18,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-03-14 01:08:18,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-03-14 01:08:18,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 150 transitions, 1050 flow. Second operand has 21 states, 21 states have (on average 9.761904761904763) internal successors, (205), 21 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:18,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:18,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-03-14 01:08:18,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:20,916 INFO L124 PetriNetUnfolderBase]: 3278/5294 cut-off events. [2025-03-14 01:08:20,917 INFO L125 PetriNetUnfolderBase]: For 13105/13125 co-relation queries the response was YES. [2025-03-14 01:08:20,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19957 conditions, 5294 events. 3278/5294 cut-off events. For 13105/13125 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31371 event pairs, 203 based on Foata normal form. 20/5312 useless extension candidates. Maximal degree in co-relation 18820. Up to 2428 conditions per place. [2025-03-14 01:08:20,954 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 223 selfloop transitions, 187 changer transitions 2/418 dead transitions. [2025-03-14 01:08:20,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 418 transitions, 3345 flow [2025-03-14 01:08:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-14 01:08:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-14 01:08:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 523 transitions. [2025-03-14 01:08:20,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4661319073083779 [2025-03-14 01:08:20,957 INFO L175 Difference]: Start difference. First operand has 91 places, 150 transitions, 1050 flow. Second operand 34 states and 523 transitions. [2025-03-14 01:08:20,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 418 transitions, 3345 flow [2025-03-14 01:08:20,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 418 transitions, 3332 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-14 01:08:20,983 INFO L231 Difference]: Finished difference. Result has 134 places, 262 transitions, 2433 flow [2025-03-14 01:08:20,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2433, PETRI_PLACES=134, PETRI_TRANSITIONS=262} [2025-03-14 01:08:20,985 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 99 predicate places. [2025-03-14 01:08:20,985 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 262 transitions, 2433 flow [2025-03-14 01:08:20,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.761904761904763) internal successors, (205), 21 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:20,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:20,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:20,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:21,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:21,188 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:21,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1539151013, now seen corresponding path program 4 times [2025-03-14 01:08:21,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:21,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410972447] [2025-03-14 01:08:21,189 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:21,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:21,195 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:21,202 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:21,205 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:08:21,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410972447] [2025-03-14 01:08:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410972447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796243991] [2025-03-14 01:08:21,507 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:21,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:21,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:21,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 01:08:21,549 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:21,570 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:21,571 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:08:21,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:21,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-14 01:08:21,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:21,600 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 15 treesize of output 1 [2025-03-14 01:08:21,778 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 55 treesize of output 31 [2025-03-14 01:08:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:21,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:23,325 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 215 treesize of output 193 [2025-03-14 01:08:23,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:23,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 300 treesize of output 286 [2025-03-14 01:08:26,251 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 140 treesize of output 126 [2025-03-14 01:08:26,259 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-14 01:08:26,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 152 [2025-03-14 01:08:26,378 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 169 treesize of output 155 [2025-03-14 01:08:26,387 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-03-14 01:08:26,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 1 [2025-03-14 01:08:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796243991] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:26,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:26,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-03-14 01:08:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471565450] [2025-03-14 01:08:26,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:26,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-14 01:08:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:26,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-14 01:08:26,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2025-03-14 01:08:26,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:08:26,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 262 transitions, 2433 flow. Second operand has 24 states, 24 states have (on average 8.625) internal successors, (207), 24 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:26,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:26,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:08:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:28,997 INFO L124 PetriNetUnfolderBase]: 4979/7939 cut-off events. [2025-03-14 01:08:28,997 INFO L125 PetriNetUnfolderBase]: For 32492/32496 co-relation queries the response was YES. [2025-03-14 01:08:29,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34343 conditions, 7939 events. 4979/7939 cut-off events. For 32492/32496 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 50190 event pairs, 861 based on Foata normal form. 7/7945 useless extension candidates. Maximal degree in co-relation 32705. Up to 5600 conditions per place. [2025-03-14 01:08:29,046 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 285 selfloop transitions, 156 changer transitions 2/448 dead transitions. [2025-03-14 01:08:29,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 448 transitions, 4484 flow [2025-03-14 01:08:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-14 01:08:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-14 01:08:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 435 transitions. [2025-03-14 01:08:29,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2025-03-14 01:08:29,048 INFO L175 Difference]: Start difference. First operand has 134 places, 262 transitions, 2433 flow. Second operand 33 states and 435 transitions. [2025-03-14 01:08:29,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 448 transitions, 4484 flow [2025-03-14 01:08:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 448 transitions, 4257 flow, removed 60 selfloop flow, removed 12 redundant places. [2025-03-14 01:08:29,174 INFO L231 Difference]: Finished difference. Result has 163 places, 333 transitions, 3366 flow [2025-03-14 01:08:29,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3366, PETRI_PLACES=163, PETRI_TRANSITIONS=333} [2025-03-14 01:08:29,175 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 128 predicate places. [2025-03-14 01:08:29,175 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 333 transitions, 3366 flow [2025-03-14 01:08:29,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.625) internal successors, (207), 24 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:29,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:29,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:29,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:29,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:29,380 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:29,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2098605177, now seen corresponding path program 5 times [2025-03-14 01:08:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853915587] [2025-03-14 01:08:29,381 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:08:29,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:29,385 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:29,407 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:29,407 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:29,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853915587] [2025-03-14 01:08:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853915587] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209592385] [2025-03-14 01:08:29,906 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:08:29,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:29,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:29,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:29,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 01:08:29,945 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-14 01:08:29,960 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:08:29,961 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:29,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:29,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-14 01:08:29,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:29,988 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 15 treesize of output 1 [2025-03-14 01:08:30,175 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 55 treesize of output 31 [2025-03-14 01:08:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:30,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:31,347 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 182 treesize of output 166 [2025-03-14 01:08:31,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:31,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2025-03-14 01:08:35,020 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 106 treesize of output 96 [2025-03-14 01:08:35,029 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-14 01:08:35,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2025-03-14 01:08:35,174 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 229 treesize of output 205 [2025-03-14 01:08:35,181 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-03-14 01:08:35,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2025-03-14 01:08:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209592385] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:35,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2025-03-14 01:08:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672300650] [2025-03-14 01:08:35,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:35,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-14 01:08:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:35,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-14 01:08:35,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2025-03-14 01:08:35,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-03-14 01:08:35,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 333 transitions, 3366 flow. Second operand has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 26 states have internal predecessors, (251), 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) [2025-03-14 01:08:35,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:35,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-03-14 01:08:35,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:37,712 INFO L124 PetriNetUnfolderBase]: 4758/7728 cut-off events. [2025-03-14 01:08:37,712 INFO L125 PetriNetUnfolderBase]: For 38655/38671 co-relation queries the response was YES. [2025-03-14 01:08:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 7728 events. 4758/7728 cut-off events. For 38655/38671 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 49786 event pairs, 554 based on Foata normal form. 13/7738 useless extension candidates. Maximal degree in co-relation 35667. Up to 4830 conditions per place. [2025-03-14 01:08:37,756 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 344 selfloop transitions, 226 changer transitions 2/578 dead transitions. [2025-03-14 01:08:37,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 578 transitions, 6337 flow [2025-03-14 01:08:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-14 01:08:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-14 01:08:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 498 transitions. [2025-03-14 01:08:37,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4573002754820937 [2025-03-14 01:08:37,760 INFO L175 Difference]: Start difference. First operand has 163 places, 333 transitions, 3366 flow. Second operand 33 states and 498 transitions. [2025-03-14 01:08:37,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 578 transitions, 6337 flow [2025-03-14 01:08:37,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 578 transitions, 6039 flow, removed 131 selfloop flow, removed 6 redundant places. [2025-03-14 01:08:37,904 INFO L231 Difference]: Finished difference. Result has 195 places, 442 transitions, 4825 flow [2025-03-14 01:08:37,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4825, PETRI_PLACES=195, PETRI_TRANSITIONS=442} [2025-03-14 01:08:37,905 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 160 predicate places. [2025-03-14 01:08:37,905 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 442 transitions, 4825 flow [2025-03-14 01:08:37,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 26 states have internal predecessors, (251), 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) [2025-03-14 01:08:37,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:37,906 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:37,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:38,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:38,109 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:38,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -493179877, now seen corresponding path program 6 times [2025-03-14 01:08:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609867773] [2025-03-14 01:08:38,110 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:08:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:38,115 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-03-14 01:08:38,122 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:08:38,122 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:08:38,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609867773] [2025-03-14 01:08:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609867773] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343472736] [2025-03-14 01:08:38,178 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:08:38,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:38,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:38,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 01:08:38,217 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-03-14 01:08:38,232 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:08:38,232 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:08:38,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:38,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:38,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:38,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:38,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343472736] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:38,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:38,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2025-03-14 01:08:38,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462664000] [2025-03-14 01:08:38,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:38,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:38,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:38,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:08:38,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:08:38,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 442 transitions, 4825 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2025-03-14 01:08:38,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:38,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:08:38,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:39,386 INFO L124 PetriNetUnfolderBase]: 7328/11160 cut-off events. [2025-03-14 01:08:39,387 INFO L125 PetriNetUnfolderBase]: For 72631/72725 co-relation queries the response was YES. [2025-03-14 01:08:39,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54886 conditions, 11160 events. 7328/11160 cut-off events. For 72631/72725 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 69878 event pairs, 1621 based on Foata normal form. 152/11308 useless extension candidates. Maximal degree in co-relation 54707. Up to 4142 conditions per place. [2025-03-14 01:08:39,453 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 556 selfloop transitions, 69 changer transitions 0/629 dead transitions. [2025-03-14 01:08:39,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 629 transitions, 7944 flow [2025-03-14 01:08:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:08:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:08:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2025-03-14 01:08:39,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-14 01:08:39,455 INFO L175 Difference]: Start difference. First operand has 195 places, 442 transitions, 4825 flow. Second operand 8 states and 144 transitions. [2025-03-14 01:08:39,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 629 transitions, 7944 flow [2025-03-14 01:08:39,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 629 transitions, 7206 flow, removed 298 selfloop flow, removed 15 redundant places. [2025-03-14 01:08:39,674 INFO L231 Difference]: Finished difference. Result has 190 places, 450 transitions, 4563 flow [2025-03-14 01:08:39,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4268, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4563, PETRI_PLACES=190, PETRI_TRANSITIONS=450} [2025-03-14 01:08:39,676 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 155 predicate places. [2025-03-14 01:08:39,676 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 450 transitions, 4563 flow [2025-03-14 01:08:39,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2025-03-14 01:08:39,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:39,676 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:39,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:39,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:39,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:39,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash 37998241, now seen corresponding path program 7 times [2025-03-14 01:08:39,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:39,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453790318] [2025-03-14 01:08:39,877 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:08:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:39,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 01:08:39,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 01:08:39,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:39,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453790318] [2025-03-14 01:08:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453790318] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793577054] [2025-03-14 01:08:39,935 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:08:39,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:39,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:39,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 01:08:39,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 01:08:39,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 01:08:39,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:39,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:39,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:39,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:40,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:40,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793577054] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:40,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-14 01:08:40,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617749387] [2025-03-14 01:08:40,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:40,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:08:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:40,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:08:40,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:08:40,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:08:40,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 450 transitions, 4563 flow. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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) [2025-03-14 01:08:40,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:40,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:08:40,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:40,975 INFO L124 PetriNetUnfolderBase]: 6122/9607 cut-off events. [2025-03-14 01:08:40,975 INFO L125 PetriNetUnfolderBase]: For 61436/61480 co-relation queries the response was YES. [2025-03-14 01:08:41,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46790 conditions, 9607 events. 6122/9607 cut-off events. For 61436/61480 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 60900 event pairs, 2131 based on Foata normal form. 376/9969 useless extension candidates. Maximal degree in co-relation 45923. Up to 2985 conditions per place. [2025-03-14 01:08:41,040 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 484 selfloop transitions, 47 changer transitions 0/535 dead transitions. [2025-03-14 01:08:41,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 535 transitions, 6347 flow [2025-03-14 01:08:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2025-03-14 01:08:41,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-14 01:08:41,041 INFO L175 Difference]: Start difference. First operand has 190 places, 450 transitions, 4563 flow. Second operand 7 states and 121 transitions. [2025-03-14 01:08:41,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 535 transitions, 6347 flow [2025-03-14 01:08:41,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 535 transitions, 6322 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-14 01:08:41,317 INFO L231 Difference]: Finished difference. Result has 195 places, 422 transitions, 4409 flow [2025-03-14 01:08:41,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4409, PETRI_PLACES=195, PETRI_TRANSITIONS=422} [2025-03-14 01:08:41,318 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 160 predicate places. [2025-03-14 01:08:41,318 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 422 transitions, 4409 flow [2025-03-14 01:08:41,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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) [2025-03-14 01:08:41,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:41,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:41,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:41,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-14 01:08:41,520 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:41,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash -718459967, now seen corresponding path program 8 times [2025-03-14 01:08:41,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:41,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701358696] [2025-03-14 01:08:41,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:41,524 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-14 01:08:41,529 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 01:08:41,529 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:41,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:41,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701358696] [2025-03-14 01:08:41,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701358696] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491031086] [2025-03-14 01:08:41,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:41,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:41,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:41,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-14 01:08:41,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-14 01:08:41,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 01:08:41,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:41,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:41,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:08:41,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:41,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:41,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491031086] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:41,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:41,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-14 01:08:41,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813434611] [2025-03-14 01:08:41,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:41,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:08:41,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:41,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:08:41,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:08:41,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:08:41,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 422 transitions, 4409 flow. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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) [2025-03-14 01:08:41,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:41,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:08:41,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:42,688 INFO L124 PetriNetUnfolderBase]: 5324/8353 cut-off events. [2025-03-14 01:08:42,688 INFO L125 PetriNetUnfolderBase]: For 59277/59277 co-relation queries the response was YES. [2025-03-14 01:08:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41978 conditions, 8353 events. 5324/8353 cut-off events. For 59277/59277 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 52024 event pairs, 1792 based on Foata normal form. 406/8752 useless extension candidates. Maximal degree in co-relation 41163. Up to 2707 conditions per place. [2025-03-14 01:08:42,728 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 443 selfloop transitions, 44 changer transitions 5/498 dead transitions. [2025-03-14 01:08:42,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 498 transitions, 6150 flow [2025-03-14 01:08:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2025-03-14 01:08:42,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2025-03-14 01:08:42,729 INFO L175 Difference]: Start difference. First operand has 195 places, 422 transitions, 4409 flow. Second operand 7 states and 117 transitions. [2025-03-14 01:08:42,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 498 transitions, 6150 flow [2025-03-14 01:08:42,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 498 transitions, 6046 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-14 01:08:42,958 INFO L231 Difference]: Finished difference. Result has 199 places, 390 transitions, 4276 flow [2025-03-14 01:08:42,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4276, PETRI_PLACES=199, PETRI_TRANSITIONS=390} [2025-03-14 01:08:42,958 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 164 predicate places. [2025-03-14 01:08:42,958 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 390 transitions, 4276 flow [2025-03-14 01:08:42,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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) [2025-03-14 01:08:42,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:42,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:42,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:43,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:43,159 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:43,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1112304464, now seen corresponding path program 1 times [2025-03-14 01:08:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635623157] [2025-03-14 01:08:43,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:43,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 01:08:43,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 01:08:43,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:43,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635623157] [2025-03-14 01:08:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635623157] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585122067] [2025-03-14 01:08:43,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:43,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:43,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:43,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:43,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-14 01:08:43,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 01:08:43,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 01:08:43,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:43,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:43,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:43,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:43,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:43,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585122067] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:43,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:43,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-03-14 01:08:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489092294] [2025-03-14 01:08:43,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:43,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-14 01:08:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:43,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-14 01:08:43,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-03-14 01:08:43,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-03-14 01:08:43,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 390 transitions, 4276 flow. Second operand has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 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) [2025-03-14 01:08:43,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:43,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-03-14 01:08:43,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:43,991 INFO L124 PetriNetUnfolderBase]: 3032/5015 cut-off events. [2025-03-14 01:08:43,991 INFO L125 PetriNetUnfolderBase]: For 45483/45655 co-relation queries the response was YES. [2025-03-14 01:08:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26323 conditions, 5015 events. 3032/5015 cut-off events. For 45483/45655 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 31203 event pairs, 1602 based on Foata normal form. 270/5242 useless extension candidates. Maximal degree in co-relation 26267. Up to 2620 conditions per place. [2025-03-14 01:08:44,019 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 164 selfloop transitions, 3 changer transitions 146/319 dead transitions. [2025-03-14 01:08:44,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 319 transitions, 4201 flow [2025-03-14 01:08:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:08:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:08:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2025-03-14 01:08:44,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2025-03-14 01:08:44,021 INFO L175 Difference]: Start difference. First operand has 199 places, 390 transitions, 4276 flow. Second operand 6 states and 97 transitions. [2025-03-14 01:08:44,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 319 transitions, 4201 flow [2025-03-14 01:08:44,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 319 transitions, 4022 flow, removed 16 selfloop flow, removed 14 redundant places. [2025-03-14 01:08:44,143 INFO L231 Difference]: Finished difference. Result has 181 places, 173 transitions, 1638 flow [2025-03-14 01:08:44,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1638, PETRI_PLACES=181, PETRI_TRANSITIONS=173} [2025-03-14 01:08:44,143 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 146 predicate places. [2025-03-14 01:08:44,143 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 173 transitions, 1638 flow [2025-03-14 01:08:44,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 13 states have internal predecessors, (126), 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) [2025-03-14 01:08:44,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:44,143 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:44,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:44,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-14 01:08:44,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:44,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 410322647, now seen corresponding path program 9 times [2025-03-14 01:08:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:44,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443211841] [2025-03-14 01:08:44,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:44,350 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:08:44,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:08:44,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:44,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:08:44,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443211841] [2025-03-14 01:08:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443211841] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10445193] [2025-03-14 01:08:44,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:44,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:44,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:44,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:44,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-14 01:08:44,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:08:44,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:08:44,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:44,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:44,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:08:44,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:44,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10445193] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:44,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 19 [2025-03-14 01:08:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892273142] [2025-03-14 01:08:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:44,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 01:08:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:44,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 01:08:44,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2025-03-14 01:08:44,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-03-14 01:08:44,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 173 transitions, 1638 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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) [2025-03-14 01:08:44,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:44,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-03-14 01:08:44,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:45,483 INFO L124 PetriNetUnfolderBase]: 3727/5506 cut-off events. [2025-03-14 01:08:45,483 INFO L125 PetriNetUnfolderBase]: For 37199/37199 co-relation queries the response was YES. [2025-03-14 01:08:45,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28573 conditions, 5506 events. 3727/5506 cut-off events. For 37199/37199 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 29160 event pairs, 475 based on Foata normal form. 16/5520 useless extension candidates. Maximal degree in co-relation 28525. Up to 1930 conditions per place. [2025-03-14 01:08:45,526 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 392 selfloop transitions, 54 changer transitions 0/450 dead transitions. [2025-03-14 01:08:45,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 450 transitions, 4977 flow [2025-03-14 01:08:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-14 01:08:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-14 01:08:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2025-03-14 01:08:45,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44522144522144524 [2025-03-14 01:08:45,527 INFO L175 Difference]: Start difference. First operand has 181 places, 173 transitions, 1638 flow. Second operand 13 states and 191 transitions. [2025-03-14 01:08:45,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 450 transitions, 4977 flow [2025-03-14 01:08:45,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 450 transitions, 4626 flow, removed 158 selfloop flow, removed 20 redundant places. [2025-03-14 01:08:45,627 INFO L231 Difference]: Finished difference. Result has 141 places, 204 transitions, 1854 flow [2025-03-14 01:08:45,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1854, PETRI_PLACES=141, PETRI_TRANSITIONS=204} [2025-03-14 01:08:45,628 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 106 predicate places. [2025-03-14 01:08:45,628 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 204 transitions, 1854 flow [2025-03-14 01:08:45,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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) [2025-03-14 01:08:45,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:45,628 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:45,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:45,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-14 01:08:45,833 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:45,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2131770317, now seen corresponding path program 10 times [2025-03-14 01:08:45,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:45,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426645182] [2025-03-14 01:08:45,834 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:45,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:45,839 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:08:45,841 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 30 statements. [2025-03-14 01:08:45,841 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:08:45,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:08:45,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:45,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426645182] [2025-03-14 01:08:45,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426645182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:45,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744103937] [2025-03-14 01:08:45,900 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:45,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:45,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:45,902 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:45,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-14 01:08:45,946 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:08:45,958 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 30 statements. [2025-03-14 01:08:45,958 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:08:45,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:45,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:45,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:08:46,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:08:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744103937] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:46,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:46,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-14 01:08:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838939158] [2025-03-14 01:08:46,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:46,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:08:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:46,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:08:46,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:08:46,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-03-14 01:08:46,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 204 transitions, 1854 flow. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 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) [2025-03-14 01:08:46,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:46,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-03-14 01:08:46,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:47,871 INFO L124 PetriNetUnfolderBase]: 7937/11391 cut-off events. [2025-03-14 01:08:47,872 INFO L125 PetriNetUnfolderBase]: For 66738/66738 co-relation queries the response was YES. [2025-03-14 01:08:47,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60224 conditions, 11391 events. 7937/11391 cut-off events. For 66738/66738 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 60200 event pairs, 206 based on Foata normal form. 10/11401 useless extension candidates. Maximal degree in co-relation 60185. Up to 3692 conditions per place. [2025-03-14 01:08:47,933 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 620 selfloop transitions, 353 changer transitions 0/974 dead transitions. [2025-03-14 01:08:47,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 974 transitions, 10209 flow [2025-03-14 01:08:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-14 01:08:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-14 01:08:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 762 transitions. [2025-03-14 01:08:47,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.405103668261563 [2025-03-14 01:08:47,934 INFO L175 Difference]: Start difference. First operand has 141 places, 204 transitions, 1854 flow. Second operand 57 states and 762 transitions. [2025-03-14 01:08:47,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 974 transitions, 10209 flow [2025-03-14 01:08:48,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 974 transitions, 9750 flow, removed 166 selfloop flow, removed 4 redundant places. [2025-03-14 01:08:48,242 INFO L231 Difference]: Finished difference. Result has 223 places, 522 transitions, 5656 flow [2025-03-14 01:08:48,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5656, PETRI_PLACES=223, PETRI_TRANSITIONS=522} [2025-03-14 01:08:48,243 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 188 predicate places. [2025-03-14 01:08:48,243 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 522 transitions, 5656 flow [2025-03-14 01:08:48,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 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) [2025-03-14 01:08:48,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:48,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:48,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:48,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-14 01:08:48,443 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:48,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1316858665, now seen corresponding path program 11 times [2025-03-14 01:08:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:48,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727390201] [2025-03-14 01:08:48,444 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:08:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:48,449 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:08:48,452 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:08:48,452 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:48,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:08:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727390201] [2025-03-14 01:08:48,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727390201] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437565234] [2025-03-14 01:08:48,515 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:08:48,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:48,517 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:48,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-14 01:08:48,557 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:08:48,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:08:48,574 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:48,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:48,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:48,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:08:48,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:08:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437565234] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:48,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2025-03-14 01:08:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994287499] [2025-03-14 01:08:48,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:48,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-14 01:08:48,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:48,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-14 01:08:48,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2025-03-14 01:08:48,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-03-14 01:08:48,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 522 transitions, 5656 flow. Second operand has 23 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 23 states have internal predecessors, (153), 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) [2025-03-14 01:08:48,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:48,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-03-14 01:08:48,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:55,586 INFO L124 PetriNetUnfolderBase]: 30018/41986 cut-off events. [2025-03-14 01:08:55,586 INFO L125 PetriNetUnfolderBase]: For 472490/472490 co-relation queries the response was YES. [2025-03-14 01:08:55,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273735 conditions, 41986 events. 30018/41986 cut-off events. For 472490/472490 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 247114 event pairs, 1350 based on Foata normal form. 44/42030 useless extension candidates. Maximal degree in co-relation 273667. Up to 16267 conditions per place. [2025-03-14 01:08:56,113 INFO L140 encePairwiseOnDemand]: 17/33 looper letters, 1576 selfloop transitions, 1550 changer transitions 0/3127 dead transitions. [2025-03-14 01:08:56,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 3127 transitions, 40225 flow [2025-03-14 01:08:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2025-03-14 01:08:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2025-03-14 01:08:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 1524 transitions. [2025-03-14 01:08:56,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2025-03-14 01:08:56,116 INFO L175 Difference]: Start difference. First operand has 223 places, 522 transitions, 5656 flow. Second operand 108 states and 1524 transitions. [2025-03-14 01:08:56,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 3127 transitions, 40225 flow [2025-03-14 01:09:00,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 3127 transitions, 38613 flow, removed 357 selfloop flow, removed 3 redundant places. [2025-03-14 01:09:00,107 INFO L231 Difference]: Finished difference. Result has 369 places, 1885 transitions, 26170 flow [2025-03-14 01:09:00,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5277, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=26170, PETRI_PLACES=369, PETRI_TRANSITIONS=1885} [2025-03-14 01:09:00,107 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 334 predicate places. [2025-03-14 01:09:00,108 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 1885 transitions, 26170 flow [2025-03-14 01:09:00,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 23 states have internal predecessors, (153), 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) [2025-03-14 01:09:00,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:00,108 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:00,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:00,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-14 01:09:00,308 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:00,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1743568999, now seen corresponding path program 12 times [2025-03-14 01:09:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409263697] [2025-03-14 01:09:00,309 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:00,314 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:09:00,319 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:09:00,319 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:00,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409263697] [2025-03-14 01:09:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409263697] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932013429] [2025-03-14 01:09:00,402 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:00,404 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:00,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-14 01:09:00,450 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 2 equivalence classes. [2025-03-14 01:09:00,468 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:09:00,468 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:00,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:00,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:09:00,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:00,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932013429] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:00,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-14 01:09:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943067138] [2025-03-14 01:09:00,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:00,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:09:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:00,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:09:00,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:09:00,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-03-14 01:09:00,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 1885 transitions, 26170 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2025-03-14 01:09:00,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:00,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-03-14 01:09:00,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:12,337 INFO L124 PetriNetUnfolderBase]: 36857/51361 cut-off events. [2025-03-14 01:09:12,338 INFO L125 PetriNetUnfolderBase]: For 1783175/1783175 co-relation queries the response was YES.