./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe034_tso.i --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/pthread-wmm/safe034_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:54:28,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:54:28,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:54:28,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:54:28,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:54:28,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:54:28,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:54:28,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:54:28,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:54:28,611 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:54:28,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:54:28,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:54:28,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:54:28,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:54:28,613 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:54:28,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:54:28,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:54:28,613 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:54:28,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:54:28,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:54:28,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:54:28,614 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:54:28,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:54:28,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:54:28,614 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 -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2025-03-14 00:54:28,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:54:28,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:54:28,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:54:28,843 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:54:28,843 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:54:28,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2025-03-14 00:54:29,938 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7adccc8de/7610190575044bc4bf18460ddc730239/FLAGa4042fcce [2025-03-14 00:54:30,223 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:54:30,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2025-03-14 00:54:30,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7adccc8de/7610190575044bc4bf18460ddc730239/FLAGa4042fcce [2025-03-14 00:54:30,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7adccc8de/7610190575044bc4bf18460ddc730239 [2025-03-14 00:54:30,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:54:30,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:54:30,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:54:30,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:54:30,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:54:30,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cc7110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30, skipping insertion in model container [2025-03-14 00:54:30,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:54:30,637 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/pthread-wmm/safe034_tso.i[945,958] [2025-03-14 00:54:30,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:54:30,726 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:54:30,734 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/pthread-wmm/safe034_tso.i[945,958] [2025-03-14 00:54:30,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:54:30,779 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:54:30,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30 WrapperNode [2025-03-14 00:54:30,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:54:30,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:54:30,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:54:30,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:54:30,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,803 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-03-14 00:54:30,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:54:30,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:54:30,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:54:30,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:54:30,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,819 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-14 00:54:30,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,822 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:54:30,827 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:54:30,827 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:54:30,827 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:54:30,827 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (1/1) ... [2025-03-14 00:54:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:54:30,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:54:30,851 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 00:54:30,854 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 00:54:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:54:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:54:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 00:54:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 00:54:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 00:54:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 00:54:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 00:54:30,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 00:54:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:54:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:54:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:54:30,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:54:30,872 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 00:54:30,954 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:54:30,956 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:54:31,103 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:54:31,104 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:54:31,104 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:54:31,183 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:54:31,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:54:31 BoogieIcfgContainer [2025-03-14 00:54:31,183 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:54:31,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:54:31,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:54:31,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:54:31,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:54:30" (1/3) ... [2025-03-14 00:54:31,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b6a0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:54:31, skipping insertion in model container [2025-03-14 00:54:31,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:30" (2/3) ... [2025-03-14 00:54:31,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b6a0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:54:31, skipping insertion in model container [2025-03-14 00:54:31,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:54:31" (3/3) ... [2025-03-14 00:54:31,191 INFO L128 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2025-03-14 00:54:31,202 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:54:31,204 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe034_tso.i that has 4 procedures, 40 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-14 00:54:31,205 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:54:31,246 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 00:54:31,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2025-03-14 00:54:31,299 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2025-03-14 00:54:31,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:54:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-14 00:54:31,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2025-03-14 00:54:31,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2025-03-14 00:54:31,314 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:54:31,322 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;@f8d736e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:54:31,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 00:54:31,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:54:31,336 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-03-14 00:54:31,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:54:31,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:31,337 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:31,337 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 00:54:31,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -823888058, now seen corresponding path program 1 times [2025-03-14 00:54:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595517708] [2025-03-14 00:54:31,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:31,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 00:54:31,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 00:54:31,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:31,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:31,808 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 00:54:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595517708] [2025-03-14 00:54:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595517708] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:31,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:31,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:54:31,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209122368] [2025-03-14 00:54:31,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:31,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:54:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:31,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:54:31,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:54:31,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-03-14 00:54:31,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 00:54:31,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:31,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-03-14 00:54:31,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:33,131 INFO L124 PetriNetUnfolderBase]: 11080/16199 cut-off events. [2025-03-14 00:54:33,131 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-03-14 00:54:33,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32237 conditions, 16199 events. 11080/16199 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 99576 event pairs, 3206 based on Foata normal form. 478/16674 useless extension candidates. Maximal degree in co-relation 32226. Up to 8093 conditions per place. [2025-03-14 00:54:33,276 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 5 changer transitions 71/132 dead transitions. [2025-03-14 00:54:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 132 transitions, 535 flow [2025-03-14 00:54:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 00:54:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 00:54:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-03-14 00:54:33,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2025-03-14 00:54:33,291 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 7 states and 179 transitions. [2025-03-14 00:54:33,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 132 transitions, 535 flow [2025-03-14 00:54:33,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 132 transitions, 530 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 00:54:33,303 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 136 flow [2025-03-14 00:54:33,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2025-03-14 00:54:33,308 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2025-03-14 00:54:33,308 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 136 flow [2025-03-14 00:54:33,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 00:54:33,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:33,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:33,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:54:33,309 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 00:54:33,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1412422841, now seen corresponding path program 1 times [2025-03-14 00:54:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:33,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473566513] [2025-03-14 00:54:33,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:33,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 00:54:33,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 00:54:33,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:33,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:33,446 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 00:54:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473566513] [2025-03-14 00:54:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473566513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:33,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:33,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:54:33,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819053838] [2025-03-14 00:54:33,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:33,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 00:54:33,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:33,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 00:54:33,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 00:54:33,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-03-14 00:54:33,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:33,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:33,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-03-14 00:54:33,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:33,983 INFO L124 PetriNetUnfolderBase]: 6513/10113 cut-off events. [2025-03-14 00:54:33,984 INFO L125 PetriNetUnfolderBase]: For 6377/6377 co-relation queries the response was YES. [2025-03-14 00:54:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24700 conditions, 10113 events. 6513/10113 cut-off events. For 6377/6377 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 62374 event pairs, 1166 based on Foata normal form. 478/10576 useless extension candidates. Maximal degree in co-relation 24684. Up to 5118 conditions per place. [2025-03-14 00:54:34,031 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 70 selfloop transitions, 5 changer transitions 1/81 dead transitions. [2025-03-14 00:54:34,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 446 flow [2025-03-14 00:54:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 00:54:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 00:54:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-03-14 00:54:34,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-14 00:54:34,034 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 136 flow. Second operand 4 states and 104 transitions. [2025-03-14 00:54:34,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 446 flow [2025-03-14 00:54:34,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 416 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-14 00:54:34,070 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 156 flow [2025-03-14 00:54:34,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2025-03-14 00:54:34,071 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2025-03-14 00:54:34,071 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 156 flow [2025-03-14 00:54:34,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:34,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:34,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:34,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:54:34,072 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 00:54:34,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1550577801, now seen corresponding path program 1 times [2025-03-14 00:54:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899483594] [2025-03-14 00:54:34,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:34,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 00:54:34,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 00:54:34,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:34,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:34,207 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 00:54:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:34,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899483594] [2025-03-14 00:54:34,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899483594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:34,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:34,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:54:34,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122579274] [2025-03-14 00:54:34,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:34,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:54:34,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:34,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:54:34,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:54:34,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-03-14 00:54:34,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 00:54:34,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:34,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-03-14 00:54:34,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:34,551 INFO L124 PetriNetUnfolderBase]: 3744/5814 cut-off events. [2025-03-14 00:54:34,551 INFO L125 PetriNetUnfolderBase]: For 3593/3593 co-relation queries the response was YES. [2025-03-14 00:54:34,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15243 conditions, 5814 events. 3744/5814 cut-off events. For 3593/3593 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 31708 event pairs, 686 based on Foata normal form. 334/6133 useless extension candidates. Maximal degree in co-relation 15225. Up to 2055 conditions per place. [2025-03-14 00:54:34,578 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 89 selfloop transitions, 8 changer transitions 2/104 dead transitions. [2025-03-14 00:54:34,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 104 transitions, 579 flow [2025-03-14 00:54:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 00:54:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 00:54:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-03-14 00:54:34,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.665 [2025-03-14 00:54:34,580 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 156 flow. Second operand 5 states and 133 transitions. [2025-03-14 00:54:34,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 104 transitions, 579 flow [2025-03-14 00:54:34,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 565 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-14 00:54:34,585 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 192 flow [2025-03-14 00:54:34,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-03-14 00:54:34,586 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2025-03-14 00:54:34,586 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 192 flow [2025-03-14 00:54:34,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 00:54:34,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:34,586 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] [2025-03-14 00:54:34,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:54:34,586 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 00:54:34,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash 171214937, now seen corresponding path program 1 times [2025-03-14 00:54:34,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:34,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247890282] [2025-03-14 00:54:34,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:34,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-14 00:54:34,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-14 00:54:34,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:34,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:34,739 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 00:54:34,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247890282] [2025-03-14 00:54:34,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247890282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:34,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:34,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:54:34,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116395338] [2025-03-14 00:54:34,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:34,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:54:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:34,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:54:34,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:54:34,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-03-14 00:54:34,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 00:54:34,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:34,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-03-14 00:54:34,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:35,017 INFO L124 PetriNetUnfolderBase]: 2413/3693 cut-off events. [2025-03-14 00:54:35,018 INFO L125 PetriNetUnfolderBase]: For 3904/3904 co-relation queries the response was YES. [2025-03-14 00:54:35,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10361 conditions, 3693 events. 2413/3693 cut-off events. For 3904/3904 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18292 event pairs, 591 based on Foata normal form. 120/3798 useless extension candidates. Maximal degree in co-relation 10343. Up to 1410 conditions per place. [2025-03-14 00:54:35,033 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 70 selfloop transitions, 11 changer transitions 5/91 dead transitions. [2025-03-14 00:54:35,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 520 flow [2025-03-14 00:54:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:54:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:54:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-03-14 00:54:35,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-03-14 00:54:35,035 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 192 flow. Second operand 6 states and 132 transitions. [2025-03-14 00:54:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 520 flow [2025-03-14 00:54:35,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 479 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-03-14 00:54:35,047 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 198 flow [2025-03-14 00:54:35,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2025-03-14 00:54:35,048 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2025-03-14 00:54:35,049 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 198 flow [2025-03-14 00:54:35,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 00:54:35,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:35,049 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:35,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:54:35,049 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 00:54:35,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1506947884, now seen corresponding path program 1 times [2025-03-14 00:54:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133618034] [2025-03-14 00:54:35,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:35,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-14 00:54:35,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 00:54:35,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:35,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:35,214 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 00:54:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133618034] [2025-03-14 00:54:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133618034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:35,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:35,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 00:54:35,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335367617] [2025-03-14 00:54:35,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:35,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:54:35,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:35,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:54:35,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:54:35,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-03-14 00:54:35,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 00:54:35,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:35,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-03-14 00:54:35,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:35,640 INFO L124 PetriNetUnfolderBase]: 3285/5029 cut-off events. [2025-03-14 00:54:35,640 INFO L125 PetriNetUnfolderBase]: For 5210/5210 co-relation queries the response was YES. [2025-03-14 00:54:35,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14122 conditions, 5029 events. 3285/5029 cut-off events. For 5210/5210 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 26361 event pairs, 269 based on Foata normal form. 8/5036 useless extension candidates. Maximal degree in co-relation 14103. Up to 1820 conditions per place. [2025-03-14 00:54:35,655 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 70 selfloop transitions, 8 changer transitions 54/136 dead transitions. [2025-03-14 00:54:35,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 874 flow [2025-03-14 00:54:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 00:54:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 00:54:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2025-03-14 00:54:35,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51875 [2025-03-14 00:54:35,658 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 198 flow. Second operand 8 states and 166 transitions. [2025-03-14 00:54:35,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 874 flow [2025-03-14 00:54:35,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 136 transitions, 664 flow, removed 38 selfloop flow, removed 10 redundant places. [2025-03-14 00:54:35,680 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 163 flow [2025-03-14 00:54:35,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2025-03-14 00:54:35,682 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2025-03-14 00:54:35,682 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 163 flow [2025-03-14 00:54:35,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 00:54:35,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:35,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:35,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 00:54:35,683 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 00:54:35,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2017792596, now seen corresponding path program 2 times [2025-03-14 00:54:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003682959] [2025-03-14 00:54:35,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:54:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:35,689 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-14 00:54:35,693 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 00:54:35,693 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 00:54:35,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:35,811 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 00:54:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003682959] [2025-03-14 00:54:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003682959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:35,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:35,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:54:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853497047] [2025-03-14 00:54:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:35,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:54:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:35,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:54:35,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:54:35,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-03-14 00:54:35,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 00:54:35,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:35,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-03-14 00:54:35,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:36,067 INFO L124 PetriNetUnfolderBase]: 2533/4020 cut-off events. [2025-03-14 00:54:36,067 INFO L125 PetriNetUnfolderBase]: For 1354/1354 co-relation queries the response was YES. [2025-03-14 00:54:36,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9647 conditions, 4020 events. 2533/4020 cut-off events. For 1354/1354 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21234 event pairs, 1177 based on Foata normal form. 8/4016 useless extension candidates. Maximal degree in co-relation 9630. Up to 2140 conditions per place. [2025-03-14 00:54:36,076 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 38 selfloop transitions, 2 changer transitions 35/79 dead transitions. [2025-03-14 00:54:36,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 422 flow [2025-03-14 00:54:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 00:54:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 00:54:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2025-03-14 00:54:36,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.465 [2025-03-14 00:54:36,078 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 163 flow. Second operand 5 states and 93 transitions. [2025-03-14 00:54:36,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 422 flow [2025-03-14 00:54:36,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 412 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-14 00:54:36,081 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 139 flow [2025-03-14 00:54:36,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2025-03-14 00:54:36,082 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2025-03-14 00:54:36,082 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 139 flow [2025-03-14 00:54:36,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 00:54:36,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:36,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:36,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 00:54:36,083 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 00:54:36,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1322682376, now seen corresponding path program 3 times [2025-03-14 00:54:36,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:36,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062812076] [2025-03-14 00:54:36,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:54:36,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:36,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 1 equivalence classes. [2025-03-14 00:54:36,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 00:54:36,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 00:54:36,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:36,195 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 00:54:36,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:36,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062812076] [2025-03-14 00:54:36,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062812076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:36,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:36,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:54:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561573075] [2025-03-14 00:54:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:36,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:54:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:36,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:54:36,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:54:36,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-03-14 00:54:36,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:36,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:36,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-03-14 00:54:36,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:36,342 INFO L124 PetriNetUnfolderBase]: 677/1073 cut-off events. [2025-03-14 00:54:36,342 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2025-03-14 00:54:36,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 1073 events. 677/1073 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4053 event pairs, 172 based on Foata normal form. 8/1080 useless extension candidates. Maximal degree in co-relation 2514. Up to 620 conditions per place. [2025-03-14 00:54:36,345 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2025-03-14 00:54:36,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 279 flow [2025-03-14 00:54:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:54:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:54:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-03-14 00:54:36,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3625 [2025-03-14 00:54:36,346 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 139 flow. Second operand 6 states and 87 transitions. [2025-03-14 00:54:36,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 279 flow [2025-03-14 00:54:36,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 261 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-14 00:54:36,348 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2025-03-14 00:54:36,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2025-03-14 00:54:36,349 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2025-03-14 00:54:36,350 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2025-03-14 00:54:36,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:36,352 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-14 00:54:36,352 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-03-14 00:54:36,352 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-14 00:54:36,352 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-14 00:54:36,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 00:54:36,353 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2025-03-14 00:54:36,355 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-14 00:54:36,356 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-14 00:54:36,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.03 12:54:36 BasicIcfg [2025-03-14 00:54:36,359 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-14 00:54:36,360 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-14 00:54:36,360 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-14 00:54:36,360 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-14 00:54:36,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:54:31" (3/4) ... [2025-03-14 00:54:36,363 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-14 00:54:36,366 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-14 00:54:36,366 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-14 00:54:36,366 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-14 00:54:36,370 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2025-03-14 00:54:36,370 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-14 00:54:36,370 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-14 00:54:36,371 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-14 00:54:36,428 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-14 00:54:36,429 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-14 00:54:36,429 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-14 00:54:36,430 INFO L158 Benchmark]: Toolchain (without parser) took 5917.24ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 104.3MB in the beginning and 475.2MB in the end (delta: -371.0MB). Peak memory consumption was 194.0MB. Max. memory is 16.1GB. [2025-03-14 00:54:36,430 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:36,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.89ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 84.6MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-14 00:54:36,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.45ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 82.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:36,431 INFO L158 Benchmark]: Boogie Preprocessor took 21.65ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:36,432 INFO L158 Benchmark]: IcfgBuilder took 356.58ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 58.6MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-14 00:54:36,432 INFO L158 Benchmark]: TraceAbstraction took 5174.31ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 58.6MB in the beginning and 480.0MB in the end (delta: -421.4MB). Peak memory consumption was 135.3MB. Max. memory is 16.1GB. [2025-03-14 00:54:36,432 INFO L158 Benchmark]: Witness Printer took 69.26ms. Allocated memory is still 704.6MB. Free memory was 480.0MB in the beginning and 475.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 00:54:36,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.89ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 84.6MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.45ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 82.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.65ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 356.58ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 58.6MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5174.31ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 58.6MB in the beginning and 480.0MB in the end (delta: -421.4MB). Peak memory consumption was 135.3MB. Max. memory is 16.1GB. * Witness Printer took 69.26ms. Allocated memory is still 704.6MB. Free memory was 480.0MB in the beginning and 475.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 66 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 453 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1173 IncrementalHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 4 mSDtfsCounter, 1173 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 633 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-14 00:54:36,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE