./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_25-struct_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.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_25-struct_nr_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 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:11:57,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:11:57,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:11:57,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:11:57,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:11:57,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:11:57,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:11:57,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:11:57,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:11:57,392 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:11:57,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:11:57,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:11:57,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:11:57,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:11:57,395 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:11:57,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:11:57,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:11:57,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:11:57,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:11:57,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:11:57,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:11:57,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:11:57,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:11:57,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:11:57,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:11:57,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:11:57,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:11:57,401 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:11:57,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:11:57,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:11:57,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:11:57,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:11:57,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:11:57,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:11:57,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:11:57,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:11:57,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:11:57,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:11:57,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:11:57,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:11:57,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:11:57,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:11:57,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:11:57,420 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff [2024-01-27 15:11:57,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:11:57,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:11:57,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:11:57,649 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:11:57,649 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:11:57,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_25-struct_nr_true.i [2024-01-27 15:11:58,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:11:59,029 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:11:59,029 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_25-struct_nr_true.i [2024-01-27 15:11:59,040 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c34f8b1/ae0f8c442d434bf599c9d26018508321/FLAGe236488ca [2024-01-27 15:11:59,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c34f8b1/ae0f8c442d434bf599c9d26018508321 [2024-01-27 15:11:59,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:11:59,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:11:59,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:11:59,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:11:59,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:11:59,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562705f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59, skipping insertion in model container [2024-01-27 15:11:59,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,122 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:11:59,228 WARN L239 ndardFunctionHandler]: 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_25-struct_nr_true.i[1086,1099] [2024-01-27 15:11:59,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:11:59,358 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:11:59,369 WARN L239 ndardFunctionHandler]: 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_25-struct_nr_true.i[1086,1099] [2024-01-27 15:11:59,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:11:59,438 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:11:59,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59 WrapperNode [2024-01-27 15:11:59,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:11:59,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:11:59,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:11:59,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:11:59,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,490 INFO L138 Inliner]: procedures = 163, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 81 [2024-01-27 15:11:59,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:11:59,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:11:59,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:11:59,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:11:59,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,518 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-01-27 15:11:59,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:11:59,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:11:59,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:11:59,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:11:59,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (1/1) ... [2024-01-27 15:11:59,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:11:59,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:11:59,591 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) [2024-01-27 15:11:59,598 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 [2024-01-27 15:11:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:11:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:11:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:11:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-27 15:11:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-27 15:11:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:11:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:11:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:11:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:11:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 15:11:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:11:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:11:59,624 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:11:59,749 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:11:59,751 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:11:59,897 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:11:59,897 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:11:59,967 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:11:59,967 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:11:59,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:11:59 BoogieIcfgContainer [2024-01-27 15:11:59,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:11:59,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:11:59,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:11:59,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:11:59,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:11:59" (1/3) ... [2024-01-27 15:11:59,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc218a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:11:59, skipping insertion in model container [2024-01-27 15:11:59,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:59" (2/3) ... [2024-01-27 15:11:59,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc218a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:11:59, skipping insertion in model container [2024-01-27 15:11:59,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:11:59" (3/3) ... [2024-01-27 15:11:59,973 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2024-01-27 15:11:59,993 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:12:00,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:12:00,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-27 15:12:00,002 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:12:00,041 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-27 15:12:00,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 77 flow [2024-01-27 15:12:00,107 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-01-27 15:12:00,108 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:12:00,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 4/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-01-27 15:12:00,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 77 flow [2024-01-27 15:12:00,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 67 flow [2024-01-27 15:12:00,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:12:00,133 INFO L357 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, mHoare=true, 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;@25712048, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:12:00,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 15:12:00,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:12:00,139 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-01-27 15:12:00,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:12:00,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:00,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 15:12:00,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:12:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 247973, now seen corresponding path program 1 times [2024-01-27 15:12:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581611545] [2024-01-27 15:12:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581611545] [2024-01-27 15:12:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581611545] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:00,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:00,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:12:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121611329] [2024-01-27 15:12:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:00,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:12:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:12:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:12:00,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:12:00,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-01-27 15:12:00,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:00,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:12:00,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:12:00,636 INFO L124 PetriNetUnfolderBase]: 56/161 cut-off events. [2024-01-27 15:12:00,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:12:00,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 161 events. 56/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 628 event pairs, 49 based on Foata normal form. 24/167 useless extension candidates. Maximal degree in co-relation 284. Up to 115 conditions per place. [2024-01-27 15:12:00,639 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 19 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2024-01-27 15:12:00,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 121 flow [2024-01-27 15:12:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:12:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:12:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-01-27 15:12:00,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-01-27 15:12:00,651 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 67 flow. Second operand 3 states and 59 transitions. [2024-01-27 15:12:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 121 flow [2024-01-27 15:12:00,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:12:00,654 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 62 flow [2024-01-27 15:12:00,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-01-27 15:12:00,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-01-27 15:12:00,658 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 62 flow [2024-01-27 15:12:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2024-01-27 15:12:00,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:00,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:12:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:12:00,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:12:00,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 339111511, now seen corresponding path program 1 times [2024-01-27 15:12:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:00,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830297529] [2024-01-27 15:12:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:00,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:00,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830297529] [2024-01-27 15:12:00,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830297529] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:00,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:00,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:12:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49659930] [2024-01-27 15:12:00,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:00,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:12:00,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:00,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:12:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:12:00,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:12:00,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-01-27 15:12:00,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:00,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:12:00,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:12:00,841 INFO L124 PetriNetUnfolderBase]: 55/157 cut-off events. [2024-01-27 15:12:00,841 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-27 15:12:00,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 157 events. 55/157 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 576 event pairs, 22 based on Foata normal form. 8/157 useless extension candidates. Maximal degree in co-relation 299. Up to 80 conditions per place. [2024-01-27 15:12:00,842 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 25 selfloop transitions, 6 changer transitions 3/41 dead transitions. [2024-01-27 15:12:00,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 162 flow [2024-01-27 15:12:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:12:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:12:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-01-27 15:12:00,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-01-27 15:12:00,844 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 62 flow. Second operand 5 states and 80 transitions. [2024-01-27 15:12:00,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 162 flow [2024-01-27 15:12:00,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:12:00,845 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 90 flow [2024-01-27 15:12:00,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-01-27 15:12:00,846 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-01-27 15:12:00,846 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 90 flow [2024-01-27 15:12:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-01-27 15:12:00,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:00,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:12:00,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:12:00,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:12:00,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:00,848 INFO L85 PathProgramCache]: Analyzing trace with hash 369001617, now seen corresponding path program 1 times [2024-01-27 15:12:00,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:00,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008026009] [2024-01-27 15:12:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:00,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:00,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:00,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008026009] [2024-01-27 15:12:00,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008026009] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:00,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:00,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:12:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493158504] [2024-01-27 15:12:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:12:00,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:12:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:12:00,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:12:00,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:12:00,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:00,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:12:00,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:12:00,977 INFO L124 PetriNetUnfolderBase]: 64/163 cut-off events. [2024-01-27 15:12:00,977 INFO L125 PetriNetUnfolderBase]: For 57/65 co-relation queries the response was YES. [2024-01-27 15:12:00,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 163 events. 64/163 cut-off events. For 57/65 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 578 event pairs, 20 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 374. Up to 80 conditions per place. [2024-01-27 15:12:00,979 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 25 selfloop transitions, 5 changer transitions 7/43 dead transitions. [2024-01-27 15:12:00,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 202 flow [2024-01-27 15:12:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:12:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:12:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-01-27 15:12:00,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-01-27 15:12:00,980 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 90 flow. Second operand 5 states and 85 transitions. [2024-01-27 15:12:00,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 202 flow [2024-01-27 15:12:00,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:12:00,982 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 107 flow [2024-01-27 15:12:00,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2024-01-27 15:12:00,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-01-27 15:12:00,983 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 107 flow [2024-01-27 15:12:00,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:12:00,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:00,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:12:00,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:12:00,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:12:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 937472136, now seen corresponding path program 1 times [2024-01-27 15:12:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941545401] [2024-01-27 15:12:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:01,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:01,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941545401] [2024-01-27 15:12:01,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941545401] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:01,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:01,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:12:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720991799] [2024-01-27 15:12:01,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:01,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:12:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:12:01,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:12:01,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:12:01,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:12:01,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:01,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:12:01,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:12:01,116 INFO L124 PetriNetUnfolderBase]: 19/78 cut-off events. [2024-01-27 15:12:01,117 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-27 15:12:01,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 78 events. 19/78 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 7 based on Foata normal form. 7/85 useless extension candidates. Maximal degree in co-relation 178. Up to 36 conditions per place. [2024-01-27 15:12:01,117 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-01-27 15:12:01,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 159 flow [2024-01-27 15:12:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:12:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:12:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-01-27 15:12:01,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-01-27 15:12:01,119 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 107 flow. Second operand 3 states and 61 transitions. [2024-01-27 15:12:01,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 159 flow [2024-01-27 15:12:01,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 148 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-27 15:12:01,121 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 104 flow [2024-01-27 15:12:01,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-01-27 15:12:01,121 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2024-01-27 15:12:01,122 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 104 flow [2024-01-27 15:12:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:12:01,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:01,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:12:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:12:01,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:12:01,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2015347964, now seen corresponding path program 1 times [2024-01-27 15:12:01,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:01,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468531904] [2024-01-27 15:12:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:01,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:01,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:01,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468531904] [2024-01-27 15:12:01,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468531904] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:01,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:01,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:12:01,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506762677] [2024-01-27 15:12:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:01,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:12:01,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:01,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:12:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:12:01,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:12:01,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-01-27 15:12:01,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:01,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:12:01,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:12:01,266 INFO L124 PetriNetUnfolderBase]: 21/76 cut-off events. [2024-01-27 15:12:01,267 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-01-27 15:12:01,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 76 events. 21/76 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 12 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 182. Up to 25 conditions per place. [2024-01-27 15:12:01,267 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 14 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2024-01-27 15:12:01,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 181 flow [2024-01-27 15:12:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:12:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:12:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-01-27 15:12:01,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-01-27 15:12:01,269 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 104 flow. Second operand 6 states and 83 transitions. [2024-01-27 15:12:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 181 flow [2024-01-27 15:12:01,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:12:01,270 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 74 flow [2024-01-27 15:12:01,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2024-01-27 15:12:01,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-01-27 15:12:01,271 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 74 flow [2024-01-27 15:12:01,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-01-27 15:12:01,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:01,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:12:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:12:01,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 15:12:01,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash 140233149, now seen corresponding path program 1 times [2024-01-27 15:12:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71951420] [2024-01-27 15:12:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:01,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:01,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71951420] [2024-01-27 15:12:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71951420] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:12:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631620650] [2024-01-27 15:12:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:12:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:12:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:12:01,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:12:01,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-01-27 15:12:01,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:01,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:12:01,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:12:01,393 INFO L124 PetriNetUnfolderBase]: 11/42 cut-off events. [2024-01-27 15:12:01,393 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-27 15:12:01,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 42 events. 11/42 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 4 based on Foata normal form. 2/44 useless extension candidates. Maximal degree in co-relation 99. Up to 15 conditions per place. [2024-01-27 15:12:01,394 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-01-27 15:12:01,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 21 transitions, 115 flow [2024-01-27 15:12:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:12:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:12:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-01-27 15:12:01,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33877551020408164 [2024-01-27 15:12:01,395 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 74 flow. Second operand 7 states and 83 transitions. [2024-01-27 15:12:01,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 21 transitions, 115 flow [2024-01-27 15:12:01,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 90 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-01-27 15:12:01,396 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2024-01-27 15:12:01,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2024-01-27 15:12:01,397 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2024-01-27 15:12:01,397 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2024-01-27 15:12:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-01-27 15:12:01,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-01-27 15:12:01,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-01-27 15:12:01,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-01-27 15:12:01,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-01-27 15:12:01,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-01-27 15:12:01,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-01-27 15:12:01,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-27 15:12:01,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:12:01,401 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-27 15:12:01,411 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:12:01,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:12:01,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:12:01 BasicIcfg [2024-01-27 15:12:01,415 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:12:01,416 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:12:01,416 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:12:01,416 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:12:01,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:11:59" (3/4) ... [2024-01-27 15:12:01,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:12:01,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-01-27 15:12:01,422 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2024-01-27 15:12:01,422 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-01-27 15:12:01,422 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:12:01,423 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-01-27 15:12:01,479 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:12:01,479 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:12:01,479 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:12:01,480 INFO L158 Benchmark]: Toolchain (without parser) took 2412.55ms. Allocated memory was 146.8MB in the beginning and 216.0MB in the end (delta: 69.2MB). Free memory was 75.9MB in the beginning and 181.5MB in the end (delta: -105.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:12:01,480 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:12:01,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.22ms. Allocated memory is still 146.8MB. Free memory was 75.6MB in the beginning and 55.9MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-01-27 15:12:01,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.22ms. Allocated memory is still 146.8MB. Free memory was 55.9MB in the beginning and 53.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:12:01,481 INFO L158 Benchmark]: Boogie Preprocessor took 46.05ms. Allocated memory is still 146.8MB. Free memory was 53.7MB in the beginning and 51.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:12:01,481 INFO L158 Benchmark]: RCFGBuilder took 429.58ms. Allocated memory is still 146.8MB. Free memory was 51.6MB in the beginning and 94.8MB in the end (delta: -43.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-01-27 15:12:01,482 INFO L158 Benchmark]: TraceAbstraction took 1446.19ms. Allocated memory was 146.8MB in the beginning and 216.0MB in the end (delta: 69.2MB). Free memory was 94.1MB in the beginning and 185.7MB in the end (delta: -91.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2024-01-27 15:12:01,482 INFO L158 Benchmark]: Witness Printer took 63.82ms. Allocated memory is still 216.0MB. Free memory was 185.7MB in the beginning and 181.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:12:01,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.22ms. Allocated memory is still 146.8MB. Free memory was 75.6MB in the beginning and 55.9MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.22ms. Allocated memory is still 146.8MB. Free memory was 55.9MB in the beginning and 53.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.05ms. Allocated memory is still 146.8MB. Free memory was 53.7MB in the beginning and 51.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.58ms. Allocated memory is still 146.8MB. Free memory was 51.6MB in the beginning and 94.8MB in the end (delta: -43.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1446.19ms. Allocated memory was 146.8MB in the beginning and 216.0MB in the end (delta: 69.2MB). Free memory was 94.1MB in the beginning and 185.7MB in the end (delta: -91.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. * Witness Printer took 63.82ms. Allocated memory is still 216.0MB. Free memory was 185.7MB in the beginning and 181.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 47 locations, 7 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: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 307 IncrementalHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 6 mSDtfsCounter, 307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:12:01,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE