./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/weaver/parallel-min-max-1.wvr.c -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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:44:24,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:44:25,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:44:25,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:44:25,053 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:44:25,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:44:25,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:44:25,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:44:25,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:44:25,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:44:25,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:44:25,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:44:25,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:44:25,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:44:25,082 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:44:25,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:44:25,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:44:25,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:44:25,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:44:25,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:44:25,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:44:25,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:44:25,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:44:25,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:44:25,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:44:25,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:44:25,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:44:25,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:44:25,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:44:25,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:44:25,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:44:25,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:44:25,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:44:25,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:44:25,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:44:25,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:44:25,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:44:25,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:44:25,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:44:25,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:44:25,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:44:25,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:44:25,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:44:25,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2024-06-27 16:44:25,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:44:25,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:44:25,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:44:25,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:44:25,309 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:44:25,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2024-06-27 16:44:26,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:44:26,552 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:44:26,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2024-06-27 16:44:26,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05328f78/f258e2da034845e49c097ee2147cdc35/FLAG812439a69 [2024-06-27 16:44:26,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05328f78/f258e2da034845e49c097ee2147cdc35 [2024-06-27 16:44:26,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:44:26,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:44:26,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:44:26,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:44:26,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:44:26,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4ff1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26, skipping insertion in model container [2024-06-27 16:44:26,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:44:26,718 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3096,3109] [2024-06-27 16:44:26,724 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:44:26,730 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:44:26,745 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3096,3109] [2024-06-27 16:44:26,747 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:44:26,758 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:44:26,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26 WrapperNode [2024-06-27 16:44:26,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:44:26,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:44:26,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:44:26,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:44:26,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,799 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2024-06-27 16:44:26,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:44:26,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:44:26,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:44:26,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:44:26,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,826 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-06-27 16:44:26,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:44:26,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:44:26,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:44:26,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:44:26,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (1/1) ... [2024-06-27 16:44:26,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:44:26,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:44:26,886 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) [2024-06-27 16:44:26,887 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 [2024-06-27 16:44:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:44:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:44:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:44:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:44:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:44:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:44:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:44:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:44:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:44:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:44:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:44:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:44:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:44:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:44:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:44:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:44:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:44:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:44:26,923 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:44:27,001 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:44:27,002 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:44:27,178 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:44:27,178 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:44:27,373 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:44:27,373 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-27 16:44:27,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:27 BoogieIcfgContainer [2024-06-27 16:44:27,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:44:27,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:44:27,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:44:27,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:44:27,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:44:26" (1/3) ... [2024-06-27 16:44:27,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae69b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:44:27, skipping insertion in model container [2024-06-27 16:44:27,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:26" (2/3) ... [2024-06-27 16:44:27,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae69b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:44:27, skipping insertion in model container [2024-06-27 16:44:27,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:27" (3/3) ... [2024-06-27 16:44:27,379 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-06-27 16:44:27,385 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:44:27,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:44:27,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:44:27,391 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:44:27,448 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:44:27,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 37 transitions, 95 flow [2024-06-27 16:44:27,513 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-06-27 16:44:27,513 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:44:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 3/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-06-27 16:44:27,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 37 transitions, 95 flow [2024-06-27 16:44:27,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2024-06-27 16:44:27,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:44:27,539 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;@422827f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:44:27,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:44:27,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:44:27,552 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-06-27 16:44:27,552 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:44:27,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:27,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:27,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:44:27,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash -178969562, now seen corresponding path program 1 times [2024-06-27 16:44:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:27,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490289733] [2024-06-27 16:44:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:28,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:28,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490289733] [2024-06-27 16:44:28,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490289733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:28,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:28,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590158697] [2024-06-27 16:44:28,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:28,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:28,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 16:44:28,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 16:44:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 16:44:28,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:28,194 INFO L124 PetriNetUnfolderBase]: 483/830 cut-off events. [2024-06-27 16:44:28,194 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 16:44:28,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 830 events. 483/830 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4151 event pairs, 256 based on Foata normal form. 32/808 useless extension candidates. Maximal degree in co-relation 1560. Up to 520 conditions per place. [2024-06-27 16:44:28,204 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 32 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-27 16:44:28,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 184 flow [2024-06-27 16:44:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:44:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:44:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-27 16:44:28,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 16:44:28,216 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 4 states and 88 transitions. [2024-06-27 16:44:28,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 184 flow [2024-06-27 16:44:28,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:44:28,223 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 86 flow [2024-06-27 16:44:28,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-27 16:44:28,228 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-06-27 16:44:28,228 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 86 flow [2024-06-27 16:44:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-27 16:44:28,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:28,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:44:28,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:44:28,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2058521415, now seen corresponding path program 1 times [2024-06-27 16:44:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847597343] [2024-06-27 16:44:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:28,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847597343] [2024-06-27 16:44:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847597343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:28,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:28,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230557730] [2024-06-27 16:44:28,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:28,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:28,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 16:44:28,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-06-27 16:44:28,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:28,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 16:44:28,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:28,492 INFO L124 PetriNetUnfolderBase]: 540/926 cut-off events. [2024-06-27 16:44:28,492 INFO L125 PetriNetUnfolderBase]: For 86/127 co-relation queries the response was YES. [2024-06-27 16:44:28,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 926 events. 540/926 cut-off events. For 86/127 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4711 event pairs, 319 based on Foata normal form. 79/975 useless extension candidates. Maximal degree in co-relation 494. Up to 598 conditions per place. [2024-06-27 16:44:28,497 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 33 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-27 16:44:28,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 191 flow [2024-06-27 16:44:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:44:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:44:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-06-27 16:44:28,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-06-27 16:44:28,500 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 86 flow. Second operand 4 states and 87 transitions. [2024-06-27 16:44:28,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 191 flow [2024-06-27 16:44:28,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:44:28,504 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 96 flow [2024-06-27 16:44:28,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-06-27 16:44:28,504 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-06-27 16:44:28,505 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 96 flow [2024-06-27 16:44:28,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-06-27 16:44:28,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:28,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:28,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:44:28,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:44:28,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash -478229390, now seen corresponding path program 1 times [2024-06-27 16:44:28,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:28,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020599438] [2024-06-27 16:44:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:28,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:44:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020599438] [2024-06-27 16:44:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020599438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:28,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:44:28,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188733846] [2024-06-27 16:44:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:28,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:44:28,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:44:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:44:28,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 16:44:28,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-06-27 16:44:28,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:28,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 16:44:28,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:28,755 INFO L124 PetriNetUnfolderBase]: 465/803 cut-off events. [2024-06-27 16:44:28,755 INFO L125 PetriNetUnfolderBase]: For 121/183 co-relation queries the response was YES. [2024-06-27 16:44:28,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 803 events. 465/803 cut-off events. For 121/183 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3995 event pairs, 388 based on Foata normal form. 62/831 useless extension candidates. Maximal degree in co-relation 533. Up to 712 conditions per place. [2024-06-27 16:44:28,759 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-06-27 16:44:28,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 148 flow [2024-06-27 16:44:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:44:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:44:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-06-27 16:44:28,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 16:44:28,760 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 96 flow. Second operand 3 states and 66 transitions. [2024-06-27 16:44:28,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 148 flow [2024-06-27 16:44:28,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:44:28,763 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 104 flow [2024-06-27 16:44:28,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-27 16:44:28,764 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-27 16:44:28,764 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 104 flow [2024-06-27 16:44:28,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-06-27 16:44:28,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:28,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:28,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:44:28,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:44:28,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1993299354, now seen corresponding path program 1 times [2024-06-27 16:44:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:28,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364241397] [2024-06-27 16:44:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:28,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:44:29,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364241397] [2024-06-27 16:44:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364241397] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:44:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824352031] [2024-06-27 16:44:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:29,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:44:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:44:29,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:44:29,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:44:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:29,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2024-06-27 16:44:29,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:44:29,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-06-27 16:44:29,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-06-27 16:44:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:29,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:44:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:44:29,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824352031] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:44:29,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:44:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 20 [2024-06-27 16:44:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704564937] [2024-06-27 16:44:29,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:44:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-27 16:44:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-27 16:44:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-06-27 16:44:29,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 16:44:29,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 104 flow. Second operand has 20 states, 20 states have (on average 14.35) internal successors, (287), 20 states have internal predecessors, (287), 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) [2024-06-27 16:44:29,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:29,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 16:44:29,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:30,446 INFO L124 PetriNetUnfolderBase]: 1381/2227 cut-off events. [2024-06-27 16:44:30,446 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-06-27 16:44:30,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 2227 events. 1381/2227 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11372 event pairs, 109 based on Foata normal form. 3/2220 useless extension candidates. Maximal degree in co-relation 5073. Up to 377 conditions per place. [2024-06-27 16:44:30,450 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 0 selfloop transitions, 0 changer transitions 167/167 dead transitions. [2024-06-27 16:44:30,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 167 transitions, 792 flow [2024-06-27 16:44:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-27 16:44:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-27 16:44:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 359 transitions. [2024-06-27 16:44:30,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539039039039039 [2024-06-27 16:44:30,455 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 104 flow. Second operand 18 states and 359 transitions. [2024-06-27 16:44:30,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 167 transitions, 792 flow [2024-06-27 16:44:30,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 167 transitions, 788 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 16:44:30,458 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-06-27 16:44:30,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-06-27 16:44:30,460 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-06-27 16:44:30,460 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-06-27 16:44:30,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.35) internal successors, (287), 20 states have internal predecessors, (287), 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) [2024-06-27 16:44:30,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-06-27 16:44:30,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-06-27 16:44:30,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 16:44:30,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 16:44:30,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 16:44:30,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:44:30,674 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-27 16:44:30,677 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:44:30,677 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:44:30,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:44:30 BasicIcfg [2024-06-27 16:44:30,684 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:44:30,684 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:44:30,685 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:44:30,685 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:44:30,685 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:27" (3/4) ... [2024-06-27 16:44:30,686 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:44:30,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:44:30,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:44:30,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-06-27 16:44:30,699 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2024-06-27 16:44:30,699 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-06-27 16:44:30,699 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-06-27 16:44:30,700 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 16:44:30,776 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:44:30,776 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:44:30,776 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:44:30,777 INFO L158 Benchmark]: Toolchain (without parser) took 4204.66ms. Allocated memory was 121.6MB in the beginning and 201.3MB in the end (delta: 79.7MB). Free memory was 86.9MB in the beginning and 142.3MB in the end (delta: -55.4MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,777 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:44:30,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.38ms. Allocated memory is still 121.6MB. Free memory was 86.9MB in the beginning and 73.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.56ms. Allocated memory is still 121.6MB. Free memory was 73.8MB in the beginning and 72.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,777 INFO L158 Benchmark]: Boogie Preprocessor took 53.30ms. Allocated memory is still 121.6MB. Free memory was 72.2MB in the beginning and 69.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,778 INFO L158 Benchmark]: RCFGBuilder took 520.49ms. Allocated memory is still 121.6MB. Free memory was 69.6MB in the beginning and 70.1MB in the end (delta: -419.9kB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,778 INFO L158 Benchmark]: TraceAbstraction took 3308.81ms. Allocated memory was 121.6MB in the beginning and 201.3MB in the end (delta: 79.7MB). Free memory was 69.3MB in the beginning and 148.0MB in the end (delta: -78.7MB). Peak memory consumption was 89.9MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,778 INFO L158 Benchmark]: Witness Printer took 91.97ms. Allocated memory is still 201.3MB. Free memory was 148.0MB in the beginning and 142.3MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 16:44:30,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.38ms. Allocated memory is still 121.6MB. Free memory was 86.9MB in the beginning and 73.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.56ms. Allocated memory is still 121.6MB. Free memory was 73.8MB in the beginning and 72.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.30ms. Allocated memory is still 121.6MB. Free memory was 72.2MB in the beginning and 69.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.49ms. Allocated memory is still 121.6MB. Free memory was 69.6MB in the beginning and 70.1MB in the end (delta: -419.9kB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3308.81ms. Allocated memory was 121.6MB in the beginning and 201.3MB in the end (delta: 79.7MB). Free memory was 69.3MB in the beginning and 148.0MB in the end (delta: -78.7MB). Peak memory consumption was 89.9MB. Max. memory is 16.1GB. * Witness Printer took 91.97ms. Allocated memory is still 201.3MB. Free memory was 148.0MB in the beginning and 142.3MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 58 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 400 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 384 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 792 IncrementalHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 13 mSDtfsCounter, 792 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred 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, 1.4s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 981 SizeOfPredicates, 13 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:44:30,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE