./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_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_01-priv_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 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:11:50,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:11:50,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:11:50,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:11:50,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:11:50,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:11:50,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:11:50,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:11:50,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:11:50,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:11:50,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:11:50,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:11:50,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:11:50,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:11:50,633 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:11:50,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:11:50,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:11:50,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:11:50,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:11:50,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:11:50,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:11:50,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:11:50,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:11:50,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:11:50,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:11:50,636 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:11:50,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:11:50,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:11:50,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:11:50,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:11:50,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:11:50,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:11:50,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:11:50,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:11:50,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:11:50,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:11:50,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:11:50,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:11:50,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:11:50,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:11:50,639 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:11:50,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:11:50,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:11:50,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 [2024-01-27 15:11:50,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:11:50,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:11:50,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:11:50,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:11:50,886 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:11:50,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2024-01-27 15:11:51,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:11:52,181 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:11:52,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2024-01-27 15:11:52,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a515306/9e733af2f91c4a8da902096c44eb114e/FLAG2d0abd808 [2024-01-27 15:11:52,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a515306/9e733af2f91c4a8da902096c44eb114e [2024-01-27 15:11:52,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:11:52,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:11:52,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:11:52,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:11:52,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:11:52,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ffeab67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52, skipping insertion in model container [2024-01-27 15:11:52,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,255 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:11:52,392 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_01-priv_nr_true.i[1084,1097] [2024-01-27 15:11:52,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:11:52,534 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:11:52,553 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_01-priv_nr_true.i[1084,1097] [2024-01-27 15:11:52,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:11:52,647 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:11:52,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52 WrapperNode [2024-01-27 15:11:52,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:11:52,649 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:11:52,649 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:11:52,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:11:52,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,704 INFO L138 Inliner]: procedures = 163, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 89 [2024-01-27 15:11:52,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:11:52,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:11:52,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:11:52,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:11:52,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,740 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-27 15:11:52,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:11:52,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:11:52,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:11:52,766 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:11:52,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (1/1) ... [2024-01-27 15:11:52,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:11:52,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:11:52,793 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 15:11:52,806 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 15:11:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:11:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:11:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:11:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:11:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:11:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:11:52,835 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 15:11:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:11:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:11:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-27 15:11:52,836 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-27 15:11:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:11:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:11:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:11:52,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:11:52,837 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 15:11:52,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:11:52,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:11:52,840 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 15:11:52,957 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:11:52,959 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:11:53,093 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:11:53,094 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:11:53,204 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:11:53,204 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:11:53,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:11:53 BoogieIcfgContainer [2024-01-27 15:11:53,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:11:53,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:11:53,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:11:53,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:11:53,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:11:52" (1/3) ... [2024-01-27 15:11:53,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6022fece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:11:53, skipping insertion in model container [2024-01-27 15:11:53,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:11:52" (2/3) ... [2024-01-27 15:11:53,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6022fece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:11:53, skipping insertion in model container [2024-01-27 15:11:53,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:11:53" (3/3) ... [2024-01-27 15:11:53,211 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2024-01-27 15:11:53,217 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:11:53,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:11:53,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-27 15:11:53,225 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:11:53,273 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-27 15:11:53,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 77 flow [2024-01-27 15:11:53,330 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-01-27 15:11:53,331 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:11:53,333 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 15:11:53,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 77 flow [2024-01-27 15:11:53,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 67 flow [2024-01-27 15:11:53,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:11:53,359 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;@3782e653, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:11:53,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 15:11:53,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:11:53,363 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-01-27 15:11:53,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:11:53,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:11:53,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 15:11:53,365 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 15:11:53,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:11:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash 266872, now seen corresponding path program 1 times [2024-01-27 15:11:53,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:11:53,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943309751] [2024-01-27 15:11:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:11:53,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:11:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:11:53,583 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 15:11:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:11:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943309751] [2024-01-27 15:11:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943309751] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:11:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:11:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:11:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629979960] [2024-01-27 15:11:53,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:11:53,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:11:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:11:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:11:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:11:53,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:11:53,638 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 15:11:53,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:11:53,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:11:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:11:53,751 INFO L124 PetriNetUnfolderBase]: 56/161 cut-off events. [2024-01-27 15:11:53,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:11:53,753 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 625 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 15:11:53,755 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 19 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2024-01-27 15:11:53,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 121 flow [2024-01-27 15:11:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:11:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:11:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-01-27 15:11:53,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-01-27 15:11:53,767 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 67 flow. Second operand 3 states and 59 transitions. [2024-01-27 15:11:53,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 121 flow [2024-01-27 15:11:53,769 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 15:11:53,771 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 62 flow [2024-01-27 15:11:53,773 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 15:11:53,776 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-01-27 15:11:53,776 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 62 flow [2024-01-27 15:11:53,777 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 15:11:53,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:11:53,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:11:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:11:53,778 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 15:11:53,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:11:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1368347763, now seen corresponding path program 1 times [2024-01-27 15:11:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:11:53,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020687031] [2024-01-27 15:11:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:11:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:11:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:11:53,895 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 15:11:53,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:11:53,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020687031] [2024-01-27 15:11:53,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020687031] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:11:53,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:11:53,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:11:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565314194] [2024-01-27 15:11:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:11:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:11:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:11:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:11:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:11:53,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:11:53,905 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 15:11:53,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:11:53,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:11:53,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:11:54,002 INFO L124 PetriNetUnfolderBase]: 55/157 cut-off events. [2024-01-27 15:11:54,002 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-27 15:11:54,004 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 15:11:54,006 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 25 selfloop transitions, 6 changer transitions 3/41 dead transitions. [2024-01-27 15:11:54,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 162 flow [2024-01-27 15:11:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:11:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:11:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-01-27 15:11:54,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-01-27 15:11:54,010 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 62 flow. Second operand 5 states and 80 transitions. [2024-01-27 15:11:54,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 162 flow [2024-01-27 15:11:54,013 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 15:11:54,014 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 90 flow [2024-01-27 15:11:54,014 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 15:11:54,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-01-27 15:11:54,018 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 90 flow [2024-01-27 15:11:54,018 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 15:11:54,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:11:54,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:11:54,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:11:54,019 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 15:11:54,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:11:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1362016539, now seen corresponding path program 1 times [2024-01-27 15:11:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:11:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507358435] [2024-01-27 15:11:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:11:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:11:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:11:54,100 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 15:11:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:11:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507358435] [2024-01-27 15:11:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507358435] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:11:54,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:11:54,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:11:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856731170] [2024-01-27 15:11:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:11:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:11:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:11:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:11:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:11:54,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:11:54,110 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 15:11:54,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:11:54,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:11:54,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:11:54,232 INFO L124 PetriNetUnfolderBase]: 64/163 cut-off events. [2024-01-27 15:11:54,233 INFO L125 PetriNetUnfolderBase]: For 65/73 co-relation queries the response was YES. [2024-01-27 15:11:54,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 163 events. 64/163 cut-off events. For 65/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 585 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 15:11:54,234 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 25 selfloop transitions, 5 changer transitions 7/43 dead transitions. [2024-01-27 15:11:54,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 202 flow [2024-01-27 15:11:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:11:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:11:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-01-27 15:11:54,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-01-27 15:11:54,235 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 90 flow. Second operand 5 states and 85 transitions. [2024-01-27 15:11:54,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 202 flow [2024-01-27 15:11:54,237 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 15:11:54,237 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 107 flow [2024-01-27 15:11:54,237 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 15:11:54,238 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-01-27 15:11:54,238 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 107 flow [2024-01-27 15:11:54,239 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 15:11:54,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:11:54,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:11:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:11:54,239 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 15:11:54,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:11:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -513257885, now seen corresponding path program 1 times [2024-01-27 15:11:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:11:54,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184011794] [2024-01-27 15:11:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:11:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:11:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:11:54,309 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 15:11:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:11:54,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184011794] [2024-01-27 15:11:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184011794] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:11:54,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:11:54,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:11:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430180312] [2024-01-27 15:11:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:11:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:11:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:11:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:11:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:11:54,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-27 15:11:54,316 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 15:11:54,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:11:54,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-27 15:11:54,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:11:54,361 INFO L124 PetriNetUnfolderBase]: 19/78 cut-off events. [2024-01-27 15:11:54,361 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-27 15:11:54,362 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 178 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 15:11:54,362 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-01-27 15:11:54,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 159 flow [2024-01-27 15:11:54,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:11:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:11:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-01-27 15:11:54,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-01-27 15:11:54,367 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 107 flow. Second operand 3 states and 61 transitions. [2024-01-27 15:11:54,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 159 flow [2024-01-27 15:11:54,369 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 15:11:54,370 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 104 flow [2024-01-27 15:11:54,370 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 15:11:54,371 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2024-01-27 15:11:54,372 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 104 flow [2024-01-27 15:11:54,372 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 15:11:54,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:11:54,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:11:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:11:54,372 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 15:11:54,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:11:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1883929350, now seen corresponding path program 1 times [2024-01-27 15:11:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:11:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326346906] [2024-01-27 15:11:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:11:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:11:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:11:54,475 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 15:11:54,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:11:54,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326346906] [2024-01-27 15:11:54,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326346906] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:11:54,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:11:54,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:11:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809928537] [2024-01-27 15:11:54,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:11:54,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:11:54,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:11:54,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:11:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:11:54,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:11:54,481 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 15:11:54,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:11:54,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:11:54,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:11:54,537 INFO L124 PetriNetUnfolderBase]: 21/76 cut-off events. [2024-01-27 15:11:54,537 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-01-27 15:11:54,537 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 15:11:54,538 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 14 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2024-01-27 15:11:54,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 181 flow [2024-01-27 15:11:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:11:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:11:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-01-27 15:11:54,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-01-27 15:11:54,539 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 104 flow. Second operand 6 states and 83 transitions. [2024-01-27 15:11:54,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 181 flow [2024-01-27 15:11:54,540 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 15:11:54,541 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 74 flow [2024-01-27 15:11:54,541 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 15:11:54,541 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-01-27 15:11:54,541 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 74 flow [2024-01-27 15:11:54,542 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 15:11:54,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:11:54,542 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 15:11:54,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:11:54,542 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 15:11:54,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:11:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash -840891661, now seen corresponding path program 1 times [2024-01-27 15:11:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:11:54,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90454257] [2024-01-27 15:11:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:11:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:11:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:11:54,613 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 15:11:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:11:54,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90454257] [2024-01-27 15:11:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90454257] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:11:54,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:11:54,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:11:54,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590801268] [2024-01-27 15:11:54,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:11:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:11:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:11:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:11:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:11:54,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:11:54,618 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 15:11:54,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:11:54,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:11:54,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:11:54,669 INFO L124 PetriNetUnfolderBase]: 11/42 cut-off events. [2024-01-27 15:11:54,669 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-27 15:11:54,670 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 15:11:54,670 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-01-27 15:11:54,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 21 transitions, 115 flow [2024-01-27 15:11:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:11:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:11:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-01-27 15:11:54,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33877551020408164 [2024-01-27 15:11:54,673 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 74 flow. Second operand 7 states and 83 transitions. [2024-01-27 15:11:54,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 21 transitions, 115 flow [2024-01-27 15:11:54,674 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 15:11:54,674 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2024-01-27 15:11:54,674 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 15:11:54,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2024-01-27 15:11:54,675 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2024-01-27 15:11:54,675 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 15:11:54,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-01-27 15:11:54,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-01-27 15:11:54,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-01-27 15:11:54,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-01-27 15:11:54,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-01-27 15:11:54,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-01-27 15:11:54,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-27 15:11:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:11:54,679 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-27 15:11:54,682 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:11:54,683 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:11:54,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:11:54 BasicIcfg [2024-01-27 15:11:54,686 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:11:54,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:11:54,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:11:54,687 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:11:54,687 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:11:53" (3/4) ... [2024-01-27 15:11:54,689 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:11:54,691 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-01-27 15:11:54,694 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-01-27 15:11:54,694 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-01-27 15:11:54,694 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:11:54,694 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-01-27 15:11:54,750 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:11:54,751 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:11:54,751 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:11:54,751 INFO L158 Benchmark]: Toolchain (without parser) took 2542.22ms. Allocated memory was 153.1MB in the beginning and 199.2MB in the end (delta: 46.1MB). Free memory was 96.1MB in the beginning and 80.1MB in the end (delta: 15.9MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,751 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 153.1MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:11:54,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.17ms. Allocated memory is still 153.1MB. Free memory was 95.7MB in the beginning and 76.0MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.36ms. Allocated memory is still 153.1MB. Free memory was 76.0MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,752 INFO L158 Benchmark]: Boogie Preprocessor took 59.72ms. Allocated memory is still 153.1MB. Free memory was 73.8MB in the beginning and 71.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,752 INFO L158 Benchmark]: RCFGBuilder took 438.98ms. Allocated memory is still 153.1MB. Free memory was 71.4MB in the beginning and 44.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,753 INFO L158 Benchmark]: TraceAbstraction took 1480.49ms. Allocated memory was 153.1MB in the beginning and 199.2MB in the end (delta: 46.1MB). Free memory was 43.3MB in the beginning and 84.3MB in the end (delta: -41.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,753 INFO L158 Benchmark]: Witness Printer took 63.91ms. Allocated memory is still 199.2MB. Free memory was 84.3MB in the beginning and 80.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:11:54,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 153.1MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.17ms. Allocated memory is still 153.1MB. Free memory was 95.7MB in the beginning and 76.0MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.36ms. Allocated memory is still 153.1MB. Free memory was 76.0MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.72ms. Allocated memory is still 153.1MB. Free memory was 73.8MB in the beginning and 71.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 438.98ms. Allocated memory is still 153.1MB. Free memory was 71.4MB in the beginning and 44.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1480.49ms. Allocated memory was 153.1MB in the beginning and 199.2MB in the end (delta: 46.1MB). Free memory was 43.3MB in the beginning and 84.3MB in the end (delta: -41.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Witness Printer took 63.91ms. Allocated memory is still 199.2MB. Free memory was 84.3MB in the beginning and 80.1MB 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: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.3s 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, 0.4s 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 15:11:54,781 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