./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_35-traces-ex-2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/goblint-regression/13-privatized_35-traces-ex-2_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:09:45,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:09:45,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-30 10:09:45,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:09:45,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:09:45,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:09:45,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:09:45,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:09:45,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:09:45,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:09:45,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-30 10:09:45,667 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:09:45,668 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:09:45,668 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:09:45,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:09:45,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:09:45,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:09:45,669 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 -> 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 [2025-04-30 10:09:45,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:09:45,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:09:45,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:09:45,888 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:09:45,888 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:09:45,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_35-traces-ex-2_true.i [2025-04-30 10:09:47,166 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1ddd2cb/aab478ad27fd4af294293b061c5be58b/FLAG67389823b [2025-04-30 10:09:47,469 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:09:47,470 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_35-traces-ex-2_true.i [2025-04-30 10:09:47,487 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1ddd2cb/aab478ad27fd4af294293b061c5be58b/FLAG67389823b [2025-04-30 10:09:48,168 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1ddd2cb/aab478ad27fd4af294293b061c5be58b [2025-04-30 10:09:48,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:09:48,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:09:48,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:09:48,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:09:48,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:09:48,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e69917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48, skipping insertion in model container [2025-04-30 10:09:48,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:09:48,360 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_35-traces-ex-2_true.i[1088,1101] [2025-04-30 10:09:48,473 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:09:48,488 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:09:48,501 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_35-traces-ex-2_true.i[1088,1101] [2025-04-30 10:09:48,539 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:09:48,561 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:09:48,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48 WrapperNode [2025-04-30 10:09:48,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:09:48,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:09:48,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:09:48,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:09:48,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,594 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2025-04-30 10:09:48,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:09:48,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:09:48,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:09:48,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:09:48,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,612 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-04-30 10:09:48,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,617 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:09:48,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:09:48,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:09:48,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:09:48,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (1/1) ... [2025-04-30 10:09:48,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:09:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:09:48,653 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) [2025-04-30 10:09:48,659 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 [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-30 10:09:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-30 10:09:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:09:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:09:48,673 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:09:48,754 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:09:48,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:09:48,854 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:09:48,855 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:09:48,972 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:09:48,973 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:09:48,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:09:48 BoogieIcfgContainer [2025-04-30 10:09:48,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:09:48,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:09:48,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:09:48,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:09:48,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:09:48" (1/3) ... [2025-04-30 10:09:48,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed60e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:09:48, skipping insertion in model container [2025-04-30 10:09:48,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:09:48" (2/3) ... [2025-04-30 10:09:48,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed60e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:09:48, skipping insertion in model container [2025-04-30 10:09:48,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:09:48" (3/3) ... [2025-04-30 10:09:48,981 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_35-traces-ex-2_true.i [2025-04-30 10:09:48,991 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:09:48,992 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_35-traces-ex-2_true.i that has 2 procedures, 30 locations, 29 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-30 10:09:48,993 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:09:49,021 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-30 10:09:49,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 64 flow [2025-04-30 10:09:49,069 INFO L116 PetriNetUnfolderBase]: 1/29 cut-off events. [2025-04-30 10:09:49,071 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:09:49,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-04-30 10:09:49,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 64 flow [2025-04-30 10:09:49,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 47 flow [2025-04-30 10:09:49,082 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:09:49,088 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;@7363129d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:09:49,089 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-30 10:09:49,093 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:09:49,093 INFO L116 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-04-30 10:09:49,093 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:09:49,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:09:49,094 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:09:49,094 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:09:49,098 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:09:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash -313664109, now seen corresponding path program 1 times [2025-04-30 10:09:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:09:49,104 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586522252] [2025-04-30 10:09:49,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:09:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:09:49,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:09:49,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:09:49,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:09:49,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:09:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:09:49,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:09:49,377 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586522252] [2025-04-30 10:09:49,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586522252] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:09:49,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:09:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:09:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51214865] [2025-04-30 10:09:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:09:49,384 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:09:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:09:49,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:09:49,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:09:49,407 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-04-30 10:09:49,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:09:49,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:09:49,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-04-30 10:09:49,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:09:49,512 INFO L116 PetriNetUnfolderBase]: 41/125 cut-off events. [2025-04-30 10:09:49,512 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:09:49,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 125 events. 41/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 425 event pairs, 22 based on Foata normal form. 10/133 useless extension candidates. Maximal degree in co-relation 227. Up to 59 conditions per place. [2025-04-30 10:09:49,514 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 17 selfloop transitions, 3 changer transitions 10/36 dead transitions. [2025-04-30 10:09:49,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 135 flow [2025-04-30 10:09:49,518 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:09:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-30 10:09:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-04-30 10:09:49,529 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-04-30 10:09:49,530 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 47 flow. Second operand 5 states and 72 transitions. [2025-04-30 10:09:49,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 135 flow [2025-04-30 10:09:49,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:09:49,537 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 61 flow [2025-04-30 10:09:49,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2025-04-30 10:09:49,541 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2025-04-30 10:09:49,543 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 61 flow [2025-04-30 10:09:49,544 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:09:49,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:09:49,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:09:49,544 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:09:49,544 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:09:49,545 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:09:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1593947482, now seen corresponding path program 1 times [2025-04-30 10:09:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:09:49,545 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268433762] [2025-04-30 10:09:49,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:09:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:09:49,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-30 10:09:49,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-30 10:09:49,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:09:49,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:09:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:09:49,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:09:49,739 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268433762] [2025-04-30 10:09:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268433762] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:09:49,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:09:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:09:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558941714] [2025-04-30 10:09:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:09:49,740 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:09:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:09:49,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:09:49,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:09:49,743 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-04-30 10:09:49,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-04-30 10:09:49,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:09:49,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-04-30 10:09:49,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:09:49,835 INFO L116 PetriNetUnfolderBase]: 15/66 cut-off events. [2025-04-30 10:09:49,835 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-30 10:09:49,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 66 events. 15/66 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 4 based on Foata normal form. 10/73 useless extension candidates. Maximal degree in co-relation 127. Up to 21 conditions per place. [2025-04-30 10:09:49,835 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 9 selfloop transitions, 5 changer transitions 12/31 dead transitions. [2025-04-30 10:09:49,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 129 flow [2025-04-30 10:09:49,836 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:09:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-30 10:09:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2025-04-30 10:09:49,836 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.46 [2025-04-30 10:09:49,837 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 61 flow. Second operand 5 states and 69 transitions. [2025-04-30 10:09:49,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 129 flow [2025-04-30 10:09:49,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 119 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-04-30 10:09:49,838 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 48 flow [2025-04-30 10:09:49,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2025-04-30 10:09:49,838 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2025-04-30 10:09:49,838 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 48 flow [2025-04-30 10:09:49,838 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-04-30 10:09:49,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:09:49,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:09:49,839 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:09:49,839 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:09:49,839 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:09:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 135466600, now seen corresponding path program 1 times [2025-04-30 10:09:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:09:49,840 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112162449] [2025-04-30 10:09:49,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:09:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:09:49,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-30 10:09:49,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-30 10:09:49,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:09:49,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:09:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:09:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:09:50,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112162449] [2025-04-30 10:09:50,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112162449] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:09:50,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:09:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-30 10:09:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767494494] [2025-04-30 10:09:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:09:50,091 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-30 10:09:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:09:50,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-30 10:09:50,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:09:50,095 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-04-30 10:09:50,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 16 transitions, 48 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2025-04-30 10:09:50,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:09:50,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-04-30 10:09:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:09:50,165 INFO L116 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-04-30 10:09:50,165 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-30 10:09:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 43. Up to 7 conditions per place. [2025-04-30 10:09:50,165 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2025-04-30 10:09:50,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 62 flow [2025-04-30 10:09:50,166 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:09:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-30 10:09:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2025-04-30 10:09:50,166 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.34 [2025-04-30 10:09:50,166 INFO L175 Difference]: Start difference. First operand has 30 places, 16 transitions, 48 flow. Second operand 5 states and 51 transitions. [2025-04-30 10:09:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 62 flow [2025-04-30 10:09:50,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-30 10:09:50,167 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2025-04-30 10:09:50,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2025-04-30 10:09:50,167 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2025-04-30 10:09:50,168 INFO L485 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2025-04-30 10:09:50,168 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2025-04-30 10:09:50,170 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-04-30 10:09:50,170 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-04-30 10:09:50,170 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:09:50,170 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-30 10:09:50,172 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:09:50,173 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:09:50,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:09:50 BasicIcfg [2025-04-30 10:09:50,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:09:50,181 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:09:50,181 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:09:50,181 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:09:50,182 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:09:48" (3/4) ... [2025-04-30 10:09:50,184 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:09:50,186 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-04-30 10:09:50,190 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-04-30 10:09:50,190 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-04-30 10:09:50,190 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-30 10:09:50,191 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-30 10:09:50,238 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:09:50,238 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:09:50,238 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:09:50,239 INFO L158 Benchmark]: Toolchain (without parser) took 2067.88ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 90.8MB in the end (delta: 16.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2025-04-30 10:09:50,239 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:09:50,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.04ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 84.0MB in the end (delta: 22.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:09:50,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.99ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 82.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:09:50,240 INFO L158 Benchmark]: Boogie Preprocessor took 27.61ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 80.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:09:50,240 INFO L158 Benchmark]: RCFGBuilder took 349.89ms. Allocated memory is still 142.6MB. Free memory was 80.4MB in the beginning and 56.6MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:09:50,240 INFO L158 Benchmark]: TraceAbstraction took 1205.01ms. Allocated memory is still 142.6MB. Free memory was 56.2MB in the beginning and 95.5MB in the end (delta: -39.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:09:50,240 INFO L158 Benchmark]: Witness Printer took 57.71ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 90.8MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:09:50,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.04ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 84.0MB in the end (delta: 22.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.99ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 82.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.61ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 80.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 349.89ms. Allocated memory is still 142.6MB. Free memory was 80.4MB in the beginning and 56.6MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1205.01ms. Allocated memory is still 142.6MB. Free memory was 56.2MB in the beginning and 95.5MB in the end (delta: -39.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.71ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 90.8MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 45 locations, 44 edges, 2 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 3 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=1, InterpolantAutomatonStates: 15, 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, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2025-04-30 10:09:50,253 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