./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/03_incdec.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/pthread-ext/03_incdec.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 c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:07:22,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:07:22,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:07:22,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:07:22,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:07:22,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:07:22,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:07:22,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:07:22,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:07:22,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:07:22,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:07:22,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:07:22,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:07:22,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:07:22,399 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:07:22,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:07:22,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:07:22,400 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:07:22,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:07:22,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:07:22,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:07:22,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:07:22,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:07:22,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:07:22,406 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:07:22,407 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:07:22,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:07:22,407 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:07:22,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:07:22,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:07:22,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:07:22,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:07:22,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:07:22,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:07:22,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:07:22,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:07:22,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:07:22,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:07:22,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:07:22,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:07:22,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:07:22,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:07:22,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:07:22,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:07:22,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:07:22,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:07:22,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:07:22,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:07:22,673 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:07:22,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec.i [2024-02-19 14:07:23,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:07:23,886 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:07:23,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i [2024-02-19 14:07:23,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9328953/0ab8fdfa95e9482b988d2d5fee698795/FLAGd1b1dab57 [2024-02-19 14:07:23,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9328953/0ab8fdfa95e9482b988d2d5fee698795 [2024-02-19 14:07:23,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:07:23,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:07:23,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:07:23,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:07:23,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:07:23,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:07:23" (1/1) ... [2024-02-19 14:07:23,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5578e58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:23, skipping insertion in model container [2024-02-19 14:07:23,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:07:23" (1/1) ... [2024-02-19 14:07:23,970 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:07:24,253 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30534,30547] [2024-02-19 14:07:24,262 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30928,30941] [2024-02-19 14:07:24,268 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:07:24,278 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:07:24,318 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30534,30547] [2024-02-19 14:07:24,321 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30928,30941] [2024-02-19 14:07:24,328 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:07:24,358 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:07:24,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24 WrapperNode [2024-02-19 14:07:24,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:07:24,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:07:24,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:07:24,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:07:24,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,413 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2024-02-19 14:07:24,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:07:24,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:07:24,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:07:24,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:07:24,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,455 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-02-19 14:07:24,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:07:24,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:07:24,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:07:24,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:07:24,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (1/1) ... [2024-02-19 14:07:24,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:07:24,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:07:24,516 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) [2024-02-19 14:07:24,523 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 [2024-02-19 14:07:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-19 14:07:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-19 14:07:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:07:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:07:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:07:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:07:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:07:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:07:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:07:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:07:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:07:24,558 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:07:24,672 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:07:24,673 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:07:24,922 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:07:24,922 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:07:25,034 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:07:25,035 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-19 14:07:25,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:07:25 BoogieIcfgContainer [2024-02-19 14:07:25,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:07:25,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:07:25,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:07:25,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:07:25,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:07:23" (1/3) ... [2024-02-19 14:07:25,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d0b999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:07:25, skipping insertion in model container [2024-02-19 14:07:25,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:07:24" (2/3) ... [2024-02-19 14:07:25,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d0b999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:07:25, skipping insertion in model container [2024-02-19 14:07:25,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:07:25" (3/3) ... [2024-02-19 14:07:25,044 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2024-02-19 14:07:25,058 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:07:25,058 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-19 14:07:25,058 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:07:25,092 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-19 14:07:25,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 38 transitions, 80 flow [2024-02-19 14:07:25,147 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2024-02-19 14:07:25,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:07:25,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 5/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-02-19 14:07:25,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 38 transitions, 80 flow [2024-02-19 14:07:25,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 38 transitions, 80 flow [2024-02-19 14:07:25,165 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:07:25,171 INFO L369 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=All, 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;@21c46c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:07:25,171 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:07:25,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:07:25,177 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-02-19 14:07:25,177 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:07:25,177 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:07:25,178 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-19 14:07:25,179 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:07:25,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:07:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 409445595, now seen corresponding path program 1 times [2024-02-19 14:07:25,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:07:25,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102499812] [2024-02-19 14:07:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:07:25,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:07:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:07:25,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-19 14:07:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:07:25,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-19 14:07:25,354 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-19 14:07:25,354 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-02-19 14:07:25,356 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-02-19 14:07:25,357 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-02-19 14:07:25,357 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-02-19 14:07:25,357 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-02-19 14:07:25,358 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:07:25,358 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-19 14:07:25,361 WARN L345 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-19 14:07:25,361 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-19 14:07:25,390 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-19 14:07:25,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 71 transitions, 152 flow [2024-02-19 14:07:25,409 INFO L124 PetriNetUnfolderBase]: 10/76 cut-off events. [2024-02-19 14:07:25,409 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:07:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 10/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 270 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2024-02-19 14:07:25,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 152 flow [2024-02-19 14:07:25,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 71 transitions, 152 flow [2024-02-19 14:07:25,413 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:07:25,414 INFO L369 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=All, 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;@21c46c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:07:25,414 INFO L370 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-02-19 14:07:25,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:07:25,425 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-02-19 14:07:25,425 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:07:25,425 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:07:25,425 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-19 14:07:25,426 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-02-19 14:07:25,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:07:25,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1182717211, now seen corresponding path program 1 times [2024-02-19 14:07:25,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:07:25,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179441252] [2024-02-19 14:07:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:07:25,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:07:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:07:25,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-19 14:07:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:07:25,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-19 14:07:25,486 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-19 14:07:25,487 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-02-19 14:07:25,488 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-02-19 14:07:25,488 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-02-19 14:07:25,488 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-02-19 14:07:25,489 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-02-19 14:07:25,489 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-02-19 14:07:25,489 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-02-19 14:07:25,489 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:07:25,490 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-19 14:07:25,490 WARN L345 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-19 14:07:25,490 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-19 14:07:25,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-19 14:07:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 104 transitions, 226 flow [2024-02-19 14:07:25,560 INFO L124 PetriNetUnfolderBase]: 15/112 cut-off events. [2024-02-19 14:07:25,560 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-19 14:07:25,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 15/112 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 462 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 99. Up to 4 conditions per place. [2024-02-19 14:07:25,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 104 transitions, 226 flow [2024-02-19 14:07:25,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 104 transitions, 226 flow [2024-02-19 14:07:25,567 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:07:25,572 INFO L369 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=All, 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;@21c46c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:07:25,572 INFO L370 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-02-19 14:07:25,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:07:25,580 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2024-02-19 14:07:25,580 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-19 14:07:25,580 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:07:25,580 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:07:25,581 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-02-19 14:07:25,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:07:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1997911843, now seen corresponding path program 1 times [2024-02-19 14:07:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:07:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712230254] [2024-02-19 14:07:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:07:25,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:07:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:07:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:07:25,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:07:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712230254] [2024-02-19 14:07:25,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712230254] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:07:25,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:07:25,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:07:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037627822] [2024-02-19 14:07:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:07:25,810 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:07:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:07:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:07:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:07:25,879 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-02-19 14:07:25,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-02-19 14:07:25,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:07:25,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-02-19 14:07:25,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:07:30,546 INFO L124 PetriNetUnfolderBase]: 46468/75536 cut-off events. [2024-02-19 14:07:30,546 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-02-19 14:07:30,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139413 conditions, 75536 events. 46468/75536 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 3384. Compared 672071 event pairs, 16804 based on Foata normal form. 5679/73462 useless extension candidates. Maximal degree in co-relation 27493. Up to 54715 conditions per place. [2024-02-19 14:07:30,983 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 90 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-02-19 14:07:30,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 474 flow [2024-02-19 14:07:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:07:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:07:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-02-19 14:07:30,993 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-02-19 14:07:30,995 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2024-02-19 14:07:30,996 INFO L507 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 474 flow [2024-02-19 14:07:30,996 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-02-19 14:07:30,996 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:07:30,996 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:07:30,996 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:07:30,997 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-02-19 14:07:30,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:07:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1079870369, now seen corresponding path program 1 times [2024-02-19 14:07:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:07:30,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431133244] [2024-02-19 14:07:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:07:30,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:07:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:07:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:07:31,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:07:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431133244] [2024-02-19 14:07:31,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431133244] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:07:31,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:07:31,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:07:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187209694] [2024-02-19 14:07:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:07:31,135 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:07:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:07:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:07:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:07:31,180 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 104 [2024-02-19 14:07:31,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-02-19 14:07:31,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:07:31,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 104 [2024-02-19 14:07:31,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:07:36,283 INFO L124 PetriNetUnfolderBase]: 58131/92291 cut-off events. [2024-02-19 14:07:36,283 INFO L125 PetriNetUnfolderBase]: For 11402/13007 co-relation queries the response was YES. [2024-02-19 14:07:36,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248960 conditions, 92291 events. 58131/92291 cut-off events. For 11402/13007 co-relation queries the response was YES. Maximal size of possible extension queue 3874. Compared 801360 event pairs, 18735 based on Foata normal form. 1500/85648 useless extension candidates. Maximal degree in co-relation 56157. Up to 66058 conditions per place. [2024-02-19 14:07:37,092 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 139 selfloop transitions, 8 changer transitions 0/177 dead transitions. [2024-02-19 14:07:37,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 177 transitions, 970 flow [2024-02-19 14:07:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:07:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:07:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-02-19 14:07:37,094 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6490384615384616 [2024-02-19 14:07:37,095 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2024-02-19 14:07:37,095 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 177 transitions, 970 flow [2024-02-19 14:07:37,095 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-02-19 14:07:37,095 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:07:37,095 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-02-19 14:07:37,096 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:07:37,096 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-02-19 14:07:37,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:07:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash 59182490, now seen corresponding path program 1 times [2024-02-19 14:07:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:07:37,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947657687] [2024-02-19 14:07:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:07:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:07:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:07:37,105 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-19 14:07:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:07:37,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-19 14:07:37,112 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-19 14:07:37,112 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-02-19 14:07:37,112 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-02-19 14:07:37,112 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-02-19 14:07:37,112 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-02-19 14:07:37,113 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-02-19 14:07:37,113 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2024-02-19 14:07:37,113 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-02-19 14:07:37,113 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-02-19 14:07:37,113 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-02-19 14:07:37,113 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:07:37,114 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-19 14:07:37,114 WARN L345 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-19 14:07:37,114 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-19 14:07:37,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-19 14:07:37,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 137 transitions, 302 flow [2024-02-19 14:07:37,165 INFO L124 PetriNetUnfolderBase]: 20/148 cut-off events. [2024-02-19 14:07:37,165 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-19 14:07:37,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 148 events. 20/148 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 640 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 131. Up to 5 conditions per place. [2024-02-19 14:07:37,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 137 transitions, 302 flow [2024-02-19 14:07:37,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 137 transitions, 302 flow [2024-02-19 14:07:37,169 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:07:37,170 INFO L369 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=All, 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;@21c46c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:07:37,171 INFO L370 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-02-19 14:07:37,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:07:37,175 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2024-02-19 14:07:37,175 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-19 14:07:37,175 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:07:37,175 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:07:37,175 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-02-19 14:07:37,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:07:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2104256486, now seen corresponding path program 1 times [2024-02-19 14:07:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:07:37,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239038116] [2024-02-19 14:07:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:07:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:07:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:07:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:07:37,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:07:37,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239038116] [2024-02-19 14:07:37,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239038116] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:07:37,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:07:37,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:07:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481235989] [2024-02-19 14:07:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:07:37,241 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:07:37,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:07:37,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:07:37,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:07:37,271 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 137 [2024-02-19 14:07:37,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-02-19 14:07:37,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:07:37,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 137 [2024-02-19 14:07:37,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand