/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:18:34,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:18:34,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 01:18:34,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:18:34,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:18:34,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:18:34,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:18:34,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:18:34,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:18:34,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:18:34,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:18:34,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:18:34,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:18:34,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:18:34,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:18:34,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:18:34,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:18:34,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:18:34,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:18:34,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:18:34,962 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 01:18:35,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:18:35,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:18:35,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:18:35,203 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:18:35,205 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:18:35,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2025-04-14 01:18:36,428 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56401fd1a/2b1c539f472b4bd9983d6e15ff551aa0/FLAGe619b343f [2025-04-14 01:18:36,621 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:18:36,621 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2025-04-14 01:18:36,628 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56401fd1a/2b1c539f472b4bd9983d6e15ff551aa0/FLAGe619b343f [2025-04-14 01:18:37,628 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56401fd1a/2b1c539f472b4bd9983d6e15ff551aa0 [2025-04-14 01:18:37,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:18:37,634 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:18:37,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:18:37,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:18:37,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:18:37,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560bd6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37, skipping insertion in model container [2025-04-14 01:18:37,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:18:37,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2025-04-14 01:18:37,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:18:37,796 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:18:37,820 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2025-04-14 01:18:37,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:18:37,830 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:18:37,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37 WrapperNode [2025-04-14 01:18:37,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:18:37,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:18:37,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:18:37,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:18:37,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,862 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2025-04-14 01:18:37,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:18:37,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:18:37,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:18:37,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:18:37,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,885 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]. [2025-04-14 01:18:37,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,891 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:18:37,898 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:18:37,898 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:18:37,898 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:18:37,899 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (1/1) ... [2025-04-14 01:18:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:18:37,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:37,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-14 01:18:37,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:18:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:18:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:18:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:18:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:18:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:18:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:18:37,939 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 01:18:38,022 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:18:38,023 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:18:38,224 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:18:38,224 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:18:38,224 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:18:38,414 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:18:38,416 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:18:38,420 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:18:38,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:18:38 BoogieIcfgContainer [2025-04-14 01:18:38,420 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:18:38,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:18:38,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:18:38,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:18:38,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:18:37" (1/3) ... [2025-04-14 01:18:38,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c42ae6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:18:38, skipping insertion in model container [2025-04-14 01:18:38,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:18:37" (2/3) ... [2025-04-14 01:18:38,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c42ae6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:18:38, skipping insertion in model container [2025-04-14 01:18:38,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:18:38" (3/3) ... [2025-04-14 01:18:38,427 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2025-04-14 01:18:38,436 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:18:38,437 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-le-max.wvr.c that has 4 procedures, 26 locations, 27 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-14 01:18:38,438 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:18:38,488 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 01:18:38,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 81 flow [2025-04-14 01:18:38,544 INFO L116 PetriNetUnfolderBase]: 5/27 cut-off events. [2025-04-14 01:18:38,546 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 01:18:38,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 5/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-04-14 01:18:38,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 81 flow [2025-04-14 01:18:38,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 70 flow [2025-04-14 01:18:38,559 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:18:38,566 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@13797211, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:18:38,566 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 01:18:38,574 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:18:38,574 INFO L116 PetriNetUnfolderBase]: 5/25 cut-off events. [2025-04-14 01:18:38,574 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 01:18:38,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:38,575 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:38,575 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:38,579 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash 898361827, now seen corresponding path program 1 times [2025-04-14 01:18:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:38,585 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250549048] [2025-04-14 01:18:38,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:18:38,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:38,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 01:18:38,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 01:18:38,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:38,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:38,765 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250549048] [2025-04-14 01:18:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250549048] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:38,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:38,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:18:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288631011] [2025-04-14 01:18:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:38,771 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:18:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:38,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:18:38,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:18:38,790 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2025-04-14 01:18:38,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:38,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:38,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2025-04-14 01:18:38,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:38,911 INFO L116 PetriNetUnfolderBase]: 304/471 cut-off events. [2025-04-14 01:18:38,911 INFO L117 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-04-14 01:18:38,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 471 events. 304/471 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1504 event pairs, 234 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 884. Up to 457 conditions per place. [2025-04-14 01:18:38,918 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 22 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2025-04-14 01:18:38,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 112 flow [2025-04-14 01:18:38,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:18:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:18:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-04-14 01:18:38,928 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2025-04-14 01:18:38,930 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 3 states and 37 transitions. [2025-04-14 01:18:38,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 112 flow [2025-04-14 01:18:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 01:18:38,937 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 56 flow [2025-04-14 01:18:38,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2025-04-14 01:18:38,943 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2025-04-14 01:18:38,943 INFO L485 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 56 flow [2025-04-14 01:18:38,943 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:38,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:38,944 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] [2025-04-14 01:18:38,944 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:18:38,944 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:38,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1290663089, now seen corresponding path program 1 times [2025-04-14 01:18:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:38,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275902479] [2025-04-14 01:18:38,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:18:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:38,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-14 01:18:38,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-14 01:18:38,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:38,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:39,094 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275902479] [2025-04-14 01:18:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275902479] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:39,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:39,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:18:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572681971] [2025-04-14 01:18:39,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:39,095 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:18:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:39,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:18:39,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:18:39,095 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2025-04-14 01:18:39,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:39,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:39,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2025-04-14 01:18:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:39,202 INFO L116 PetriNetUnfolderBase]: 304/472 cut-off events. [2025-04-14 01:18:39,202 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:18:39,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 472 events. 304/472 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1521 event pairs, 234 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 945. Up to 460 conditions per place. [2025-04-14 01:18:39,206 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2025-04-14 01:18:39,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 106 flow [2025-04-14 01:18:39,207 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:18:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:18:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-04-14 01:18:39,208 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2025-04-14 01:18:39,208 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 56 flow. Second operand 3 states and 37 transitions. [2025-04-14 01:18:39,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 106 flow [2025-04-14 01:18:39,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:18:39,210 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 67 flow [2025-04-14 01:18:39,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2025-04-14 01:18:39,211 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2025-04-14 01:18:39,211 INFO L485 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 67 flow [2025-04-14 01:18:39,211 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:39,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:39,211 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:39,211 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:18:39,211 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:39,212 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2083162882, now seen corresponding path program 1 times [2025-04-14 01:18:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:39,213 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021687761] [2025-04-14 01:18:39,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:18:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:39,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:18:39,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:18:39,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:39,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:18:39,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:39,615 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021687761] [2025-04-14 01:18:39,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021687761] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:39,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:39,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:18:39,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504076109] [2025-04-14 01:18:39,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:39,615 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:18:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:39,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:18:39,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:18:39,616 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2025-04-14 01:18:39,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:39,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:39,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2025-04-14 01:18:39,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:39,809 INFO L116 PetriNetUnfolderBase]: 411/614 cut-off events. [2025-04-14 01:18:39,809 INFO L117 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-04-14 01:18:39,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 614 events. 411/614 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2052 event pairs, 17 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 1251. Up to 267 conditions per place. [2025-04-14 01:18:39,813 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2025-04-14 01:18:39,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 67 transitions, 289 flow [2025-04-14 01:18:39,813 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:18:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:18:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2025-04-14 01:18:39,814 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2025-04-14 01:18:39,814 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 67 flow. Second operand 8 states and 98 transitions. [2025-04-14 01:18:39,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 67 transitions, 289 flow [2025-04-14 01:18:39,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 67 transitions, 285 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-14 01:18:39,816 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2025-04-14 01:18:39,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2025-04-14 01:18:39,817 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2025-04-14 01:18:39,817 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2025-04-14 01:18:39,817 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:39,819 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 01:18:39,819 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 01:18:39,819 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 01:18:39,819 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 01:18:39,819 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:18:39,819 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-14 01:18:39,822 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 01:18:39,822 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 01:18:39,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 01:18:39 BasicIcfg [2025-04-14 01:18:39,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 01:18:39,827 INFO L158 Benchmark]: Toolchain (without parser) took 2193.39ms. Allocated memory is still 125.8MB. Free memory was 89.6MB in the beginning and 41.8MB in the end (delta: 47.8MB). Peak memory consumption was 47.8MB. Max. memory is 8.0GB. [2025-04-14 01:18:39,827 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:18:39,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.52ms. Allocated memory is still 125.8MB. Free memory was 89.2MB in the beginning and 74.2MB in the end (delta: 15.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 01:18:39,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.87ms. Allocated memory is still 125.8MB. Free memory was 74.2MB in the beginning and 72.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:18:39,830 INFO L158 Benchmark]: Boogie Preprocessor took 34.89ms. Allocated memory is still 125.8MB. Free memory was 72.8MB in the beginning and 70.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:18:39,830 INFO L158 Benchmark]: IcfgBuilder took 521.90ms. Allocated memory is still 125.8MB. Free memory was 70.8MB in the beginning and 28.9MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-14 01:18:39,830 INFO L158 Benchmark]: TraceAbstraction took 1404.05ms. Allocated memory is still 125.8MB. Free memory was 28.5MB in the beginning and 41.8MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:18:39,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.52ms. Allocated memory is still 125.8MB. Free memory was 89.2MB in the beginning and 74.2MB in the end (delta: 15.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.87ms. Allocated memory is still 125.8MB. Free memory was 74.2MB in the beginning and 72.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 34.89ms. Allocated memory is still 125.8MB. Free memory was 72.8MB in the beginning and 70.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 521.90ms. Allocated memory is still 125.8MB. Free memory was 70.8MB in the beginning and 28.9MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1404.05ms. Allocated memory is still 125.8MB. Free memory was 28.5MB in the beginning and 41.8MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: 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, 41 locations, 49 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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! [2025-04-14 01:18:39,844 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...